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Genot-Klastersky, M.T., Klastersky, J., Awada, F., Awada, A., Crombez, P., Martinez, M.D., et al. (2008). The use of low-energy laser (LEL) for the prevention of chemotherapy- and/or radiotherapy-induced oral mucositis in cancer patients: Results from two prospective studies. Supportive Care and Cancer, 16(12), 1381–1387.

Intervention Characteristics/Basic Study Process

100 mW laser was delivered to tissues with a 1.2 mm spot size. Treatment areas included inferior and superior lips, right and left cheeks, right and left tongue, palate and velum palate, right and left gums, and tongue frenulum.

Average energy was 2 J/cm2 on all sites, with a calculated mean duration of 33 seconds per site; each treatment lasted six minutes.

  1. Three sessions per week
  2. Started within 24 hours of diagnosis and given every other work day

Sample Characteristics

(1) Patients with various solid tumors treated with chemotherapy; previous oral mucositis of 2 or higher

26 patients for 90% power

Patients with concomitant RT and those \"expected to be poor compliers to the treatment schedule\" were excluded.

Mean age 51 was years (range = 32–73 years).
20 women; 6 men

 

(2) Randomized trial for patients with hematologic malignancies who developed mucositis receiving radiochemotherapy prior to HSCT. Therapy started 24 hours after diagnosis of mucositis. Sham laser control was used.
20 patients were needed in each arm for 90% power.

n = 36 (18 patients in each arm)
 

Measurement Instruments/Methods

Grade of mucositis using EORTC scale

Grading was performed by a nurse prior to each treatment session and afterward once a week by an independent blinded professional observer.

All treated areas were examined.
 

Results

1. 21 of 26 patients were considered to have prevented mucositis (81%, 95% CI = 61%–93%); 4 with no mucositis, and 17 with grade I. Five patients had grade 2 or higher; median duration was 10 days (range = 8–14 days).

2. Grade 3 mucositis was observed in 16 patients in the sham group and in 3 LEL treated patients (p = 0.001). Overall success rate was 15 of 18 (83%, 95% CI = 59%–96%) and 2 of 18 in the control group (11%, 95% CI = 1–35).Time to grade 3 mucositis was calculated (p < 0.0001).

Of 16 patients in the control arm who developed grade 3–4, eight later received laser treatment; regression to grade 1 mucositis was three days in this group and four days in those who did not receive LEL.
 

Limitations

Limited sample size, although the prevention trial (1) achieved 90% power.

The heterogeneous population in the prevention trial makes the results difficult to generalize. Oral care and other factors were not reported.

 

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Gennaro, P., Gabriele, G., Mihara, M., Kikuchi, K., Salini, C., Aboh, I., . . . Ungari, C. (2016). Supramicrosurgical lymphatico-venular anastomosis (LVA) in treating lymphoedema: 36-months preliminary report. European Review for Medical and Pharmacological Sciences, 20, 4642–4653. 

Study Purpose

To evaluate the effects of lymphaticovenular anastomosis (LVA) on patients with lymphedema

Intervention Characteristics/Basic Study Process

A retrospective research study of 36-months of follow-up of 69 patients with lymphedema after LVA surgery. Each had a preoperative ultrasound with an echo-color doppler. Results were not discussed in the study, neither did it state why these were done.
 
Each patient was measured bilaterally with 5 circumferential measurement points. Sums were compared pre- and postoperatively and then at multiple intervals throughout 36 months.
Upper extremity: hand, wrist, elbow, 5 cm distal and 5 cm proximal to the elbow
Lower extremity: dorsum of the foot, ankle, the knee, 10 cm distal and 10 cm proximal to the knee
 
Pre- and postoperative indocyanine green dye (ICG) lymphography: Each patient had an ICG lymphography, which is injected into the distal extremity, involving an infrared light issues to visualize the lymphatics. After the intervention, patients evaluated their quality of life and lymphedema. They were evaluated again at two weeks, one month, and every six months after surgery. Patients started lymph drainage postoperatively. Patients wore compression for one year after the surgery.

Sample Characteristics

  • N = 69   
  • MEAN AGE = 55 years (range = 16–76 years)
  • MALES: 7%, FEMALES: 93%
  • CURRENT TREATMENT: Other
  • KEY DISEASE CHARACTERISTICS: Unilateral upper or lower extremity lymphedema with or without a history of cancer diagnosis; of the 69 patients, 42 had upper extremity lymphedema and 27 had lower extremity edema; of the patients with cancer, 40 had a history of breast cancer, 9 had a history of endometial cancer, 3 had a history of melanoma with lymphadenectomy, 2 a history of ovarian cancer, 2 had cervical cancer, 1 had sarcoma, and 1 had bladder cancer with lymphadenectomy; 9 patients had primary lymphedema, and 1 had traumatic lymphedema; of the patients with cancer, 39 had radiation therapy.
  • OTHER KEY SAMPLE CHARACTERISTICS: Patients with at least a one-year follow-up were included in the study.

Setting

  • SITE: Single site  
  • SETTING TYPE: Not specified    
  • LOCATION: Italy

Phase of Care and Clinical Applications

APPLICATIONS: Pediatrics, elder care

Study Design

Retrospective

Measurement Instruments/Methods

Measuring tape

Results

All patients lost volume with an average reduction of 50%. None of the study patients reported an event of cellulitis during the follow-up. Patients with histories of cellulitis had less reduction. A 49% reduction was seen in patients who had reported one to two events, and a 33% reduction was seen in those with more than two events.  
  • Postoperative ICG: Three hundred thirty-seven of the 366 anastomosis remained patent. 
  • Subjective reporting: Sixty-seven reported satisfaction: lighter limbs, softer tissue, less pain, and improved function.

Conclusions

The LVA appears to successfully establish alternate lymphatic drainage pathways in the lymph damaged limb. It is minimally invasive requiring considerably less surgery than the lymph node transplantation procedures and potentially better outcomes. The patients tolerate it well and recovery quickly. It is unclear whether patients no longer needed to use compression garments, but the study reported that all had a reduction in compression class. The researchers reported outcomes that did reflect disease progression: Stage IV limbs did not improve, as well as stage II.

Limitations

  • Small sample (< 100)
  • Risk of bias (no control group)
  • Risk of bias (no blinding)
  • Risk of bias (no random assignment)

Nursing Implications

The findings suggest that LVA may be helpful for patients to reduce lymphedema. Nurses need to be aware of patient education needs if this procedure is used.

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Gennaro, M., Maccauro, M., Sigari, C., Casalini, P., Bedodi, L., Conti, A. R., . . . Bombardieri, E. (2013). Selective axillary dissection after axillary reverse mapping to prevent breast cancer–related lymphoedema. European Journal of Surgical Oncology, 39, 1341–1345.

Study Purpose

To assess the occurrence of breast cancer–related lymphedema (BCRL) and the feasibility of selective axillary dissection (SAD) after axillary reverse mapping (ARM)

Intervention Characteristics/Basic Study Process

ARM was performed on 60 patients undergoing SAD. Patients received follow-up after 6–36 months and were assessed for BCRL.

Sample Characteristics

  • N = 60    
  • KEY DISEASE CHARACTERISTICS: Patients with axillary nodal involvement, diagnosed by positive sentinel lymph node biopsy or preoperative needle biopsy, scheduled for axillary lymph node dissection 
  • OTHER KEY SAMPLE CHARACTERISTICS: All patients received three intradermal injections of Tc-labeled nanocolloid, and lymphoscintigraphy was performed one hour later. Operations were completed by the same surgeon, and SAD was completed up to Berg’s level III, with identification and preservation of the arm’s lymphatic hot spot when feasible.

Setting

  • SITE: Single site 
  • SETTING TYPE: Inpatient 
  • LOCATION: Milan, Italy

Phase of Care and Clinical Applications

  • PHASE OF CARE: Active antitumor treatment

Study Design

The intervention group participated in the SAD intervention, and the control group usually had axillary lymph node dissection. 

Measurement Instruments/Methods

  • T test
  • Chi-square
  • Fisher’s exact test

Results

SAD was successful in 45 of 60 patients. Four of 45 patients in the intervention group and five of 15 patients in the control group developed lymphedema (p = .072). 

Conclusions

BCRL with SAD technique after median follow-up of 16 months had 33% the rate of lymphedema occurence than conventional ALND. SAD technique requires a separate surgery from sentinel lymph node biopsy. Authors concede there may be a learning curve to this technique, and further research is needed to determine appropriate patient selection.

Limitations

  • Small sample (< 100)
  • Risk of bias (no blinding)
  • Findings not generalizable
  • Other limitations/explanation:  Relatively short follow-up to determine development of BCRL

Nursing Implications

New surgical techniques may result in lowering patient morbidity but does not eliminate the possibility of patients developing BCRL. Education should continue to be provided to all patients regarding early identification of signs and symptoms of BCRL.

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Geng, C.J., Liang, Q., Zhong, J.H., Zhu, M., Meng, F.Y., Wu, N., . . . Yuan, B.Y. (2015). Ibandronate to treat skeletal-related events and bone pain in metastatic bone disease or multiple myeloma: A meta-analysis of randomised clinical trials. BMJ Open, 5(6), e007258-2014-007258. 

Purpose

STUDY PURPOSE: To evaluate the effects of ibandronate relative to placebo or zolendronate for treatment of skeletal-related events and bone pain in patients with cancer

TYPE OF STUDY: Meta-analysis and systematic review

Search Strategy

DATABASES USED: PubMed, EMBASE, Cochrane Collaboration
 
INCLUSION CRITERIA: Randomized, controlled trials comparing ibandronate to placebo or zoledronate; adult patients
 
EXCLUSION CRITERIA: Not specified

Literature Evaluated

TOTAL REFERENCES RETRIEVED: 419
 
EVALUATION METHOD AND COMMENTS ON LITERATURE USED: The Jadad scale was used to assess study quality. Average study quality was good. Studies with lower scores were open-label drug comparisons.

Sample Characteristics

  • FINAL NUMBER STUDIES INCLUDED = 8; 4 comparing ibandronate to placebo and 4 comparing to zolendronate
  • TOTAL PATIENTS INCLUDED IN REVIEW: 3,316
  • SAMPLE RANGE ACROSS STUDIES: 44–1,400 patients
  • KEY SAMPLE CHARACTERISTICS: Various tumor types; medications were given IV in some trials and orally in some trials

Phase of Care and Clinical Applications

PHASE OF CARE: Late effects and survivorship
 
APPLICATIONS: Palliative care

Results

IV or oral ibandronate was significantly better than placebo for pain reduction (WMD = -0.41, p < 0.00001). No significant differences in pain outcomes were seen between ibandronate and zoledronate. Incidence of renal toxicity was lower with ibandronate compared to zoledronate (RR = 0.71, p = 0.006). Incidence of skeletal-related events was lower with ibandronate compared to placebo (p = 0.002). There was no significant difference in skeletal-related events between ibandronate and zolendronate and no difference in other adverse events.

Conclusions

IV ibandronate every three to four weeks or daily oral medication was effective in reducing skeletal events and pain in patients with bone metastases, and was associated with lower incidence of renal toxicity than zoledronate.

Limitations

  • Almost all patients were Caucasian.
  • No subgroup analysis between IV and oral ibandronate administration

Nursing Implications

Ibandronate is effective in reducing pain from bone metastases and multiple myeloma, and in preventing skeletal events in these patients, with efficacy similar to that of zoledronate. This analysis also showed that ibandronate was associated with lower prevalence of renal toxicity compared to zoledronate, so it may be a preferred choice for some patients with relevant comorbid conditions. Further research is needed to fully compare efficacy of oral versus IV administration.

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Ekti Genc, R., & Conk, Z. (2008). Impact of effective nursing interventions to the fatigue syndrome in children who receive chemotherapy. Cancer Nursing, 31, 312–317.

Study Purpose

The primary aim was to examine the effects of a nursing intervention for fatigue on children aged seven to 12 years who received chemotherapy. The secondary aim was to examine the relationship between fatigue and demographic variables, diagnoses, and therapy-related variables.

Intervention Characteristics/Basic Study Process

The experimental group received education about fatigue with chemotherapy and a fatigue handbook. Education provided included specific activities that decreased fatigue. Children were also walked in the hallway for physical activity. The control group was given routine nursing care. These activities were performed for one week. Participants were randomly assigned.

Sample Characteristics

  • The final sample size included 60 participants.
  • Mean age was 9.23 years for the experimental group and 9.37 years for the control group. The percentage of males was 60% in the experimental group and 63.3% in the control group.
  • Participants had acute lymphoblastic leukemia (ALL) (71.66%), acute myeloid leukemia (AML) (11.67%), and lymphoma (16.67%). 
  • No significant differences were found between the groups in terms of age, diagnosis, sex, or hemoglobin level.

Setting

  • Multisite
  • Participants were recruited in the Department of Pediatric Oncology, Ege University Faculty of Medicine and Behçet Uz Hosptial of Children and SSK Tepecik Teaching Hospital, Clinics of Pediatrics.

Study Design

This was a randomized, controlled trial.

Measurement Instruments/Methods

  • The Fatigue Scale-Child (FS-C) was used to measure participants’ fatigue and consisted of 14 items that describe the intensity of fatigue on a five-point scale.
  • The Fatigue Scale-Parent (FS-P) used 17 items to assess parents’ perceptions of their child's fatigue on a five-point scale.
  • The validity and reliability of both tests was assessed by 60 other similar children and parents.

Results

The difference between the two mean values on the FS-C between the experimental and control groups was statistically significant (p < 0.00). The difference between the two mean values of the FS-P between the experimental and control groups was statistically significant (p < 0.00).

Conclusions

The study showed some promise for an intervention to reduce fatigue. However, fatigue was not eliminated in the experimental group, and baseline fatigue scores were not collected from either group.

Limitations

  • The control group received less attention.
  • The experimental group had a limited age range and diagnosis, which may cause difficulty in generalizing the results.

Nursing Implications

It would be feasible to perform the study procedure for the experimental group in practice if the education continued to prove effective on fatigue.

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Genc, F., & Tan, M. (2014). The effect of acupressure application on chemotherapy-induced nausea, vomiting, and anxiety in patients with breast cancer. Palliative & Supportive Care. Advance online publication.

Study Purpose

To determine the effects of acupressure applied to the pericardium 6 (P 6) acupuncture point on chemotherapy-induced nausea and vomiting (CINV) and anxiety in patients with breast cancer undergoing chemotherapy

Intervention Characteristics/Basic Study Process

Stage 1–3 patients with breast cancer who were receiving cycle two and more advance-cycle chemotherapy in an ambulatory setting were trained to apply P 6 acupressure. Patients were randomly selected from a sample that met the study inclusion criteria. An acupressure wrist band was utilized with the research group. Patients were taught how to use the band with repeat demonstration. Patients continuously wore the acupressure band on both wrists for five days. Antiemetic medications used for the experimental and control group were not described.

Sample Characteristics

  • N = 64 
  • AVERAGE AGE: 51.21 years (research arm); 50.87 years (control arm)
  • FEMALES: 100%
  • KEY DISEASE CHARACTERISTICS: Stage 1–3 breast cancer after cycle two and more advance-cycle chemotherapy
  • OTHER KEY SAMPLE CHARACTERISTICS: Breast cancer, female patients

Setting

  • SITE: Single-site  
  • SETTING TYPE: Outpatient  
  • LOCATION: Turkey

Phase of Care and Clinical Applications

  • PHASE OF CARE: Active antitumor treatment
  • APPLICATIONS: Elder care 

Study Design

  • Quasi-experimental with a control group.
  • Patients selected via randomized sample

Measurement Instruments/Methods

  • Beck Anxiety Inventory (BAI)
  • Index of Nausea, Vomiting and Retching (INVR)
  • Patient information form

Results

Nausea experience scores were significantly lower in the experimental group on days 3 (p < 0.05), 4 (p < 0.01), and 5 (p < 0.001). Nausea occurrence scores were significantly lower in the experimental group on days 3 (p < 0.05), 4 (p < 0.01), and 5 (p < 0.001). There was no significant difference in the mean vomiting or retching experience or occurrence scores between groups. Mean scores combining nausea, vomiting, and retching experiences were lower in the experimental group on days 4 (p < 0.05) and 5 (p < 0.01). Mean scores combining nausea, vomiting, and retching occurrence were significant on days 4 (p < 0.05) and 5 (p < 0.01). 
 
Patients in the experimental group had lower anxiety scores than those in the control group (p < 0.001). Anxiety declined in both groups over the course of the study. Though post-test anxiety scores were significantly lower in the experimental group at conclusion, these scores were also significantly lower at baseline in the experimental group.

Conclusions

The authors concluded that acupressure wristbands applied at the P 6 point decreased patients' nausea occurrence and experience and the overall experience and occurrence of nausea, vomiting, and retching combined. There was no effect on the occurrence or experience of vomiting or retching. Acupressure is an inexpensive intervention that may be able to provide additional relief to patients above and beyond recommended antiemetic therapy. Effects on anxiety are unclear.

Limitations

  • Small sample (< 100)
  • Risk of bias (sample characteristics)
  • Key sample group differences that could influence results
  • Findings not generalizable
  • Other limitations/explanation: No discussion on why the researchers waited till cycle two to start intervention; prevention at the first cycle is key to good control; no sham band/possible placebo effect; significantly lower anxiety at baseline in the experimental group

Nursing Implications

Acupressure is inexpensive, is easy to use, and can be considered in conjugation with medication or CINV prophylaxis. Acupressure can be considered in addition to recommended antiemetic therapy for additional support of patients experiencing CINV.

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Genç, A., Can, G., & Aydiner, A. (2012). The efficiency of the acupressure in prevention of the chemotherapy-induced nausea and vomiting. Supportive Care in Cancer, 21, 253–261.

Study Purpose

To examine the efficiency of acupressure in controlling chemotherapy-induced nausea and vomiting (CINV) and to determine the factors that affect this efficiency

Intervention Characteristics/Basic Study Process

Turkish researchers recruited patients with lung, breast, and gynecological cancer who were undergoing active treatment with medicines such as doxorubicin- or cisplatin-based drugs. The researchers randomized and assigned 67 patients in the experimental group and 53 patients in the control group. The experimental group was given a real nausea wristband (Sea-Band), and the control group was given a placebo nausea band. All patients in both groups also were given standard antiemetic treatment. They were instructed to use the wristband on both of their wrists for five days, except when sleeping at night, washing their hands, and taking a shower.

Sample Characteristics

  • The study reported on 120 patients.
  • Mean age was 55.11 years in the experimental group and 52.73 years in the control group.
  • The sample was 50.8 male and 49.2 female.
  • Cancer diagnoses were breast-gynecology (experimental group: n = 40 [59.7%], control group: n = 34 [64.2%]) and lung cancer (experimental group: n = 27 [40.3%], control group: n = 19 [35%]).
  • Other key sample characteristics included the use of the following regimens.
    • Adriamycin-cyclophosphamide (experimental group: n = 12, control group: n = 4)
    • Cisplatin–etoposide (experimental group: n = 12, control group: n = 15)
    • Cisplatin–docetaxel (experimental group: n= 10, control group, n = 9)
    • Cisplatin–alimta/camptosar (experimental group: n = 5, control group: n = 5)
    • Cisplatin–gemcitabine (experimental group: n = 13, control group: n = 8)
    • 5 fluorouracil–adriamycin–cyclophosphamide/5 fluorouracil–epirubicin–cyclophosphamide (experimental group: n = 8, control group: n = 9)
    • Taxotere–adriamycin–cyclophosphamide (experimental group: n = 7, control group: n = 3)
    • Anthracycline-based (experimental group: n = 27, control group: n = 16)
    • Cisplatin-based (experimental group: n = 40, control group: n = 37)

Setting

The study was conducted at a single site in Turkey. The setting type was not specified.

Phase of Care and Clinical Applications

Patients were undergoing the active treatment phase of care.

Study Design

The study was a cross-sectional, single blinded study.

Measurement Instruments/Methods

The researchers stated that they created a patient description form to collect the demographic information, chemotherapy medications, and characteristics of the condition of the patients. They also used two measurements. 

  • The first was the Rhodes Index of Nausea Vomiting and Retching (INVR) scale, of which validity and reliability were confirmed in another Turkish study. Patients were asked to complete the INVR scale for five consecutive days. They rated their nausea and vomiting on a 0–4 scale, with a high score indicating a severe complaint.
  • The second was the Functional Assessment of Cancer Therapy-General (FACT-G), which is a quality-of-life scale. They completed the FACT-G quality-of-life scale on the fifth day only. A high score in this scale indicates a high quality of life.

Results

The researchers investigated whether acupressure affected the patients’ quality of life, as well as their experiences and development of nausea, vomiting, and retching. After five days of treatment, the results indicated that no statistically meaningful difference was observed between the control and experimental groups. Therefore, real acupressure application was not an effective strategy to increase the quality of life or to decrease the experience of CINV.

Conclusions

The statistical results show that after five days, both experimental and control groups had almost identical scores. Therefore, the real nausea wristband does not affect CINV or the quality of life.

Nursing Implications

The study shows that wristband acupressure is not effective in controlling CINV in patients with cancer. Additional studies are needed to confirm or refute this conclusion. Acupressure may need to be organ-site specific to control CINV.

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Gehring, K., Patwardhan, S.Y., Collins, R., Groves, M.D., Etzel, C.J., Meyers, C.A., & Wefel, J.S. (2012). A randomized trial on the efficacy of methylphenidate and modafinil for improving cognitive functioning and symptoms in patients with a primary brain tumor. Journal of Neuro-Oncology, 107, 165–174.

Study Purpose

To compare the effectiveness of immediate-release or sustained-release methylphenidate versus modafinil in improving cognitive function in patients with primary brain tumors.

Intervention Characteristics/Basic Study Process

Patients were randomized to receive one of the following three interventions for a total of four weeks.

  • Immediate-release methylphenidate 10 mg twice a day
  • Sustained-release methylphenidate 18 mg daily
  • Modafinil 200 mg daily

Neurocognitive tests were done prior to the initiation of the intervention and repeated approximately 30 days later after completion of the intervention.

Sample Characteristics

  • A total of 24 patients participated in the study.
  • Participants' average age was 44.98 years.
  • The sample was 54% male and 46% female.
  • 62.5% of patients’ tumors were in the left hemisphere.
  • Prior treatment history included radiation therapy (83%) and chemotherapy (87.5%). A total of 62.5% were receiving chemotherapy during the study.
     

Setting

  • Single site 
  • Outpatient 
  • University of Texas M.D. Anderson Cancer Center in Houston

Phase of Care and Clinical Applications

Patients were in mutliple phases of care.

Study Design

The study was conducted as a randomized clinical trial.

Measurement Instruments/Methods

Objective Cognitive Function Instruments

  • Wechsler Adult Intelligence Scale III (WAISIII)—digit span and digit symbol
  • Trail Making Test—parts A and B
  • Hopkins Verbal Learning Test (HVLT)—immediate recall, delayed recall, and delayed recognition
  • Multilingual Aphasia Examination (MAE)—controlled oral word association (COWA)
  • Lafayette Grooved Pegboard

Subjective Anxiety Instruments

  • State-Trait Anxiety Inventory (STAI)—state and trait anxiety  
  • Profile of Mood States (POMS)—tension-anxiety

Subjective Depression Instruments

  • Beck Depression Inventory (BDI)
  • Profile of Mood States (POMS)—depression-dejection

Subjective Fatigue Instruments

  • Brief Fatigue Inventory (BFI)
  • Profile of Mood States (POMS)—fatigue

Subjective Sleep-Wake Disturbance Instrument

  • Brief Sleep Disturbance Scale (BSDS)

Results

In regards to cognitive function, no differences were found over time with either stimulant in attention or motor function. Mixed results were found over time with stimulant use in speed of processing: significant improvement was found with the WAISIII digit symbol test (p = 0.02), but not with TMT-A. Similarly, a significant decline was found in memory as measured by the delayed recognition subtest of the HVLT (p = 0.03), but not with other subtests of that measure. When evaluating any stimulant use over time in regard to executive function, a significant improvement was found as measured by the TMT-B (p = 0.02) but a significant decline was found as measured by the COWA (p = 0.02). When evaluating differences between the methylphenidate and modafinil treatment groups over time, a significant difference was found in attention (p = 0.05): patients on methylphenidate had stable scores as measured by the digit span test and those on modafinil had worse scores over time. Likewise, a difference was seen in speed of processing (only as measured by the TMT-A) that found patients on modafinil improved in comparison to patients on methylphenidate, who either remained stable or had slight declines (p = 0.05)

In subjective measures of other symptoms, significant improvement was found over time with any stimulant use in depression as measured by the BDI (p < 0.01) and the POMS-Depr (p < 0.01), fatigue as measured by the BFI (p = 0.04) and POMS-fatigue (p < 0.01), and anxiety as measured by the STAI-state (p = 0.03). In contrast, no differences were seen over time for sleep-wake disturbances. No differences were found between treatment groups in subjective symptom measures over time.

Conclusions

Although the study found some improvements in specific cognitive domains over time (e.g., executive function, speed of processing), it is unclear whether these improvements were because of the use of a stimulant, a specific medication (modafinil versus methylphenidate), or other variables such as practice effects (related to the absence of alternative forms for neuropsychological tests). It is difficult to make any definitive interpretations based on this small study, because findings are confounded by the use of two different stimulants (one with two different dosing schedules) and the lack of a control group (patients who were not receiving stimulants).

Limitations

  • The sample size was small with less than 30 participants.
  • The lack of a control group introduced a risk of bias.
  • The key sample group had differences that could influence the results.
    • The study was unable to meet the sample size recommended by power analysis because of poor accrual and a substantial dropout rate (29%). 
    • The treatment groups varied significantly in age (p = 0.02) and gender (p = 0.03), both of these characteristics are known to influence neuropsychological test results.
  • More than 10% of subjects withdrew from the study.

 

Nursing Implications

The study does not provide any support at this time to recommend the use of stimulants to improve cognitive function. Future research studies with larger sample sizes and randomized clinical trials with a nonintervention arm are warranted.

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Gehring, K., Patwardhan, S. Y., Collins, R., Groves, M. D., Etzel, C. J., Meyers, C. A., & Wefel, J. S. (2012). A randomized trial on the efficacy of methylphenidate and modafinil for improving cognitive functioning and symptoms in patients with a primary brain tumor. Journal of Neuro-Oncology, 107, 165–174.

Study Purpose

To compare the effectiveness of immediate-release and sustained-release methylphenidate versus modafinil in improving cognitive function in patients with primary brain tumors.

Intervention Characteristics/Basic Study Process

Patients were randomized to receive one of the following three interventions for a total of four weeks:  immediate-release methylphenidate, 10 mg twice daily; sustained-release methylphenidate, 18 mg daily; or modafinil, 200 mg daily. Neurocognitive tests were performed prior to the intervention and were repeated approximately 30 days later, after completion of the intervention.

Sample Characteristics

  • Twenty-four patients with primary brain tumors were included.
  • Mean age was 44.98 years.
  • The sample was 54% male and 46% female.
  • Most (62.5%) of patients’ tumors were in the left hemisphere.
  • Prior treatment history included radiation therapy (83%) and chemotherapy (87.5%). Of all the participants, 62.5% received chemotherapy during the study.

Setting

  • Single site
  • Outpatient
  • MD Anderson Cancer Center, Houston, Texas

Phase of Care and Clinical Applications

Patients were undergoing multiple phases of care.

Study Design

The study was a randomized, clinical trial.

Measurement Instruments/Methods

Objective Cognitive Function Instruments

  • Wechsler Adult Intelligence Scale, third edition (WAIS-III) Digit Span and Digit Symbol subtests
  • Trail Making Test (TMT) Parts A and B
  • Hopkins Verbal Learning Test (HVLT) Immediate Recall, Delayed Recall, and Delayed Recognition Trials
  • Multilingual Aphasia Examination Controlled Oral Word Association (MAE COWA) category
  • Lafayette Instrument Grooved Pegboard Test

Subjective Anxiety Instruments

  • State-Trait Anxiety Inventory (STAI) to measure state and trait anxiety  
  • Profile of Mood States (POMS) to measure tension and anxiety

Subjective Depression Instruments

  • Beck Depression Inventory (BDI)
  • Profile of Mood States (POMS) Questionnaire, Depression-Dejection Scale

Subjective Fatigue Instruments

  • Brief Fatigue Inventory (BFI)
  • POMS questionnaire, Fatigue-Inertia Scale

Subjective Sleep-Wake Disturbance Instrument

  • Brief Sleep Disturbance Scale (BSDS)

Results

  • Over time, no differences were found in cognitive function in regard to attention or motor function.
  • Over time, mixed results were found in regard to the speed of processing:
    • The WAIS-III Digit Symbol subtest showed significant improvement (p = 0.02), but TMT Part A did not.
    • The HVLT Delayed Recognition Trial showed a signficiant decline (p = 0.03) in memory, but the other memory-related trials did not.
  • In regard to the use of either stimulant and executive function over time, the TMT Part B score improved significantly (p = 0.02); however, the MAE COWA score declined significantly (p = 0.02).
  • In regard to differences between the methylphenidate and modafinil treatment groups over time, researchers found the following:
    • A significant difference (p = 0.05) in attention. Attention-related scores of patients taking methylphenidate were stable on the WAIS-III Digit Span subtest; the scores of patients taking modafinil worsened over time.
    • A difference in the speed of processing as measured by TMT Part A. Patients using modafinil improved in comparison to patients taking methylphenidate, whose scores either remained stable or declined slightly (p = 0.05).
  • In regard to subjective measures of other symptoms, researchers noted, with use of either stimulant over time:
    • Significant improvement (p < 0.01) of depression, as measured by the BDI and POMS Depression-Dejection Scale.
    • Significant improvement (p = 0.04) of fatigue, as measured by the BFI.
    • Significant improvement of fatigue (p < 0.01), as measured by the POMS Fatigue-Inertia Scale.
    • Significant improvement (p = 0.03) of anxiety, as measured by the state subtest of the STAI.
  • No differences were found over time in regard to sleep-wake disturbances.
  • No differences were found between treatment groups in subjective symptom measures over time.

Conclusions

Although this study revealed some improvements in specific cognitive domains over time (e.g., executive function, speed of processing), it is unclear whether these improvements were due to the use of a stimulant; a specific medication (modafinil versus methylphenidate); or other variables, such as practice effects related to the absence of alternative neuropsychological tests. Making definitive interpretations based on this small study is difficult because the findings were confounded by the use of two stimulants (one with two different dosage schedules) and the lack of a control group (patients who were not receiving stimulants).

Limitations

  • The study had a small sample size, with less than 30 participants.
  • The study had risks of bias due to no control group and no blinding.
  • Participant withdrawals were 10% or greater.
  • The investigators were unable to achieve the sample size recommended by the power analysis due to poor accrual and a high drop-out rate (29%). Treatment groups differed significantly in regard to age (p = 0.02) and gender (p = 0.03). Age and gender influence neuropsychological test results.

Nursing Implications

No evidence was provided to support the use of stimulants to improve cognitive function. The study supports the conduct of future research of this topic in studies with larger sample sizes and in randomized, clinical trials with a nonintervention arm.

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Gehring, K., Sitskoorn, M.M., Gundy, C.M., Sikkes, S.A.M., Klein, M., Postma, T. J., . . . Aaronson, N.K. (2009). Cognitive rehabilitation in patients with gliomas: A randomized, controlled trial. Journal of Clinical Oncology, 27, 3712–3722.

Study Purpose

The study was conducted to evaluate the effectiveness of a multifaceted cognitive rehabilitation program's (CRP's) measures of cognitive functioning in patients with gliomas whose disease was in remission.

Intervention Characteristics/Basic Study Process

An eligibility screening was conducted through

  1. Telephone interviews confirming at least one cognitive symptom from the Medical Outcomes Study Cognitive Functioning Scale among individuals who expressed an interest in CRP participation.
  2. Objective neuropsychological assessment, in which participants performed at least one standard deviation below a healthy comparison group's mean (n = 294) on at least 4 of 20 neuropsychological assessment variables.

The randomization procedure was a minimization method balancing age, sex, education, tumor grade, hemisphere, radiotherapy, neurosurgery, disease duration, and institution.

The control group received standard care without cognitive intervention, and had contact with research staff at similar intervals as the intervention group. Control participants received a telephone-based empathy session during which attention to possible cognitive problems occurred without the provision of advice. At the study's completion, control participants were offered the opportunity to receive the intervention.

The intervention group received six weekly individual sessions of two hours each, carried out by seven neuropsychologists. Two techniques were incorporated. 

  1. Cognitive retraining using a computer program (C-Car) consisting of a series of hierarchically graded tasks designed to strengthen various aspects of attention on the basis of patients needs.
  2. Compensatory training consisting of six psychoeducational sessions on attention, memory, and executive function. This training included didactic and practical elements aimed to help patients compensate for impaired cognitive function.

Sample Characteristics

  • All participants had glioma in remission.
  • The total number of participants was 140, with 70 patients each in the treatment group and control group.
  • The average participant age was 42 ± 9.4 years for the treatment group.
  • The average participant age was 43.8 ± 10.5 years for the control group.
  • The treatment group was 58.6% male and 41.4% female.
  • The control group was 57.1% male and 42.9% female.
  • The median number of years since treatment was 2.6 years for the treatment group.
  • The median number of years since treatment was 3.1 years for the control group. 

Setting

Patients were recruited from 11 Dutch hospitals, including 10 neurosurgical centers.

Study Design

The study utilized a randomized, controlled trial.

Measurement Instruments/Methods

  • Dutch Adult Reading Test (DART) and the Drie-Minuten-Toets Three Minute Test (DMT) for premorbid intelligence
  • Stroop Color-Word Test (SCWT), Digit Span (Forward and Backward), Memory Scanning Test (MST), and the Test of Everyday Attention (TEA) for attention
  • Multidimensional Fatigue Inventory (MFI) for mental fatigue, activity, and motivation
  • Community Intervention Questionnaire (CIQ) for home integration, social integration, and productivity
  • Visual Verbal Learning Test (VVLT) for memory
  • Concept Shifting Test (CST), Letter Fluency (LF), and Category Fluency (CF) for executive function
  • Medical Outcomes Study Cognitive Functioning Scale
  • Cognitive Failure Questionnaire (CFQ)
  • Behavioral Assessment of Dysexecutive Syndrome (BADS)

 

Results

Eighty percent of CRP subjects reported that the intervention addressed their problems; 87% used compensation strategies regularly, and 79% indicated a decrease in the impact of cognitive problems on daily functioning. The intervention group had significantly better combined attention scores (in four out of seven tests) than the control group (p = 0.004) at the six-month follow-up. Verbal memory and attention were improved for the intervention group at the six-month follow-up, suggesting the intervention's success with some sustainment in learned skills.

Effect sizes for the CRP ranged from 0.23 to 0.55. The intervention group had significantly better combined scores on verbal memory tests than the control group (p = 0.009). Effect sizes for the intervention group on two of three tests were 0.48 and 0.43. Mental fatigue on the MFI was improved in the intervention group at the six-month follow-up (p = 0.044), with an effect size of 0.41.

Self-reported cognitive function (CFS, CFQ, burden) was better in the intervention group on completion of the CRP (p = 0.001). Effect sizes ranged from 0.31 to 0.48. However, at the six-month follow-up this improvement was maintained, while the control group continued to improve.

There were no significant differences between groups on neuropsychiatric assessment scores at baseline. There were no statistically significant group differences in attention or verbal memory scores at completion of the CRP.

 

 

Conclusions

CRP was useful in improving cognitive function, with sustained improvements in verbal memory and attention over time.

Limitations

  • Mild cognitive impairment was detected by baseline cognitive function scores in the majority of subjects, which could impact the expected change from the CRP intervention (ceiling effect).
  • The study did not indicate whether hemispheric location of the tumor influenced cognitive functioning.
  • The authors did not specify whether they controlled for tumor characteristics, seizure frequency, and use of anti-epileptics in the analyses.
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