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Gramignano, G., Lusso, M. R., Madeddu, C., Massa, E., Serpe, R., Deiana, L., . . . Mantovani, G. (2006). Efficacy of l-carnitine administration on fatigue, nutritional status, oxidative stress, and related quality of life in 12 advanced cancer patients undergoing anticancer therapy. Nutrition, 22, 136–145.

Intervention Characteristics/Basic Study Process

Carnitine is a cofactor required for cell energy production that serves as the primary fuel source for heart and skeletal muscles. Cancer-related anorexia/cachexia syndrome (CACS) and oxidative stress (OS) are two prominent features in patients with advanced cancer; therefore, L-carnitine supplementation was tested in patients with advanced cancer. Based on the current knowledge of carnitine use, patients took three doses (2 g) of L-carnitine orally each day for four weeks. Patient outcomes were evaluated at baseline (T0), week two (T1), and week four (T2).

Sample Characteristics

  • Twelve patients with locally advanced or metastatic disease were included.
  • Mean age was 60 years (range 42–73).
  • The majority of patients were women (n = 10) with mixed tumor sites (most common being gynecological cancer), and most were receiving concomitant chemotherapy (n = 10). 
  • Patients were excluded if they had an Eastern Cooperative Oncology Group (ECOG) performance status of greater than 2, had insulin-dependent diabetes mellitus, or were pregnant.

Phase of Care and Clinical Applications

Patients were undergoing the active treatment phase of care.

Study Design

The study was an open-label, nonrandomized trial. 

Measurement Instruments/Methods

Multidimensional Fatigue Symptom Inventory-Short Form (MFSI-SF)

Results

The L-carnitine intervention resulted in improved fatigue outcomes. The observed decline in MFSI-SF fatigue scores was statistically significance at both T1 (p < 0.05) and T2 (p < 0.001) in comparison to the baseline scores. Mean MFSI-SF scores at T0, T1, and T2 were 25.40 (standard deviation [SD] = 13.91), 16.93 (SD = 11.92), and 12.05 (SD = 12.56), respectively. Evaluation of subscales showed a statistically significant difference from T0 to T1 for the General subscale (p < 0.05) and the Physical subscale (p < 0.05).

Limitations

  • The study had a small sample size. 
  • The study lacked a neutral comparison group.
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Gralla, R., Bosnjak, S., Hontsa, A., Balser, C., Rizzi, G., Rossi, G., ... Jordan, K. (2014). A Phase 3 study evaluating the safety and efficacy of NEPA, a fixed-dose combination of netupitant and palonosetron, for prevention of chemotherapy-induced nausea and vomiting over repeated cycles of chemotherapy. Annals of Oncology, 25(7), 1333–1339.  

Study Purpose

To assess the safety and evaluate the efficacy of ​a fixed-dose combination of netupitant and palonosetron (NEPA) over multiple cycles of highly emetogenic chemotherapy (HEC) and moderately emetogenic chemotherapy (MEC)

Intervention Characteristics/Basic Study Process

Oral NEPA (​netupitant [NETU] 300 mg + palonosetron [PALO] 0.50 mg) + dexamethasone (DEX) versus oral aprepitant (APR) (125 mg Day 1; 80 mg Days 2–3) + oral PALO 0.50 mg Day 1 + DEX (for HEC, DEX Days 1–4; for MEC, DEX Day 1 only)

Sample Characteristics

  • N = 412  
  • AVERAGE AGE = 58 years 
  • MALES: 50%, FEMALES: 50%
  • KEY DISEASE CHARACTERISTICS: Eligible patients were ≥ 18 years, diagnosed with a malignant tumor, naïve to chemotherapy, and scheduled to receive repeated, consecutive courses of chemotherapy (HEC/MEC). A single intravenous (IV) dose of one or more of the intervention versus control agents was administered on Day 1. Single-day chemotherapy was necessary for inclusion. ECOG ≤ 2.
  • OTHER KEY SAMPLE CHARACTERISTICS: Non-AC chemotherapy, no previous NK1RA use, no CYP3A4 inducer use within four weeks, no bone marrow transplant or stem cell rescue therapy, no known hypersensitivity of or contradiction to 5-HT3RA or dexamethasone.

Setting

  • SITE: Multi-site    
  • SETTING TYPE: Outpatient    
  • LOCATION: Multinational including Bulgaria, Czech Republic, Germany, Hungary, India, Poland, Russia, Serbia, Ukraine, and the United States

Phase of Care and Clinical Applications

  • PHASE OF CARE: Active antitumor treatment

Study Design

Phase 3 multinational, double-blind, double-dummy, parallel group study design

Measurement Instruments/Methods

  • Safety: Treatment-emergent adverse events (TEAEs), labs, physical exams, vital signs, ECGs, cardiac troponin I (cTnl), and left ventricular ejection fraction (LVEF)
  • Efficacy: Diary (Days 1–6) recorded the onset and duration of emetic episodes and nausea severity (Visual Analog Score [VAS] 0–100). They also recorded the achievement of complete response (CR, no emesis, no rescue medication) or no significant nausea (VAS score of < 25 mm) during the acute (0–24 hour), delayed (25–120 hour), and overall (0–120 hour) phases after the start of chemotherapy.

Results

Overall CR rates in cycle 1 were 81% for NEPA and 76% for APR + PALO, and antiemetic efficacy was maintained over repeated cycles (with NEPA showing a consistent numerical advantage over APR + PALO; 2%–7%). The NEPA group demonstrated similar CR with HEC and MEC, whereas the APR + PALO group showed lower CR in HEC than MEC. Proportions of patients with no significant nausea were high and similar (with NEPA showing an advantage over APR + PALO).
 
The majority of TEAEs were of mild to moderate intensity; 25.0% (NEPA) and 32.7% (APR + PALO) experienced severe TEAEs. There was no indication of increasing adverse events over multiple cycles. The proportion of patients experiencing adverse events that were considered study drug-related was 10.1% for NEPA and 5.8% for APR + PALO. The most frequent adverse events for NEPA were constipation (3.6%) and headache (1.0%). Two serious TEAEs related to NEPA were ventricular systoles and acute psychosis (possibly related to DEX). There were no cardiac safety concerns based on adverse events and ECGs. 

Conclusions

NEPA, a convenient, single oral-dose antiemetic targeting dual pathways, was safe, well tolerated, and highly effective over multiple cycles of HEC and MEC.

Limitations

  • Baseline sample/group differences of import
  • Subject withdrawals ≥ 10%  
  • Other limitations/explanation: Patients participated in up to six cycles (98% completed one cycle, 75% completed four cycles, and 40% completed six cycles). 

Nursing Implications

NEPA could be used as a safe alternative for guideline-recommended antiemetic regimens (APR + PALO).
 
As the CR rates in the NEPA group were similar in HEC and MEC, the benefits of NEPA in both types of chemotherapy regimens were supported. Constipation and headache need to be considered as possible adverse events for patients receiving NEPA, and interventions need to be provided. Ventricular systoles and acute psychosis need to be understood as possible serious adverse events related to NEPA use.  
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Graham, P., Browne, L., Capp, A., Fox, C., Graham, J., Hollis, J., & Nasser, E. (2004). Randomized, paired comparison of no-sting barrier film versus sorbolene cream (10%
glycerine) skin care during post mastectomy irradiation. International Journal of Radiation Oncology, Biology, Physics, 58, 241–246.

Study Purpose

To test the effect of prophylactic 3M Cavilon no-sting barrier film (no-sting) on the rates of moist desquamation compared with sorbolene cream (10% glycerin).

Intervention Characteristics/Basic Study Process

The chest wall was divided into medial and lateral halves, with one half treated with no-sting and the other with sorbolene. No-sting was applied by the nursing staff. Administration began at the start of radiation therapy until two weeks after completion. When a moist desquamation occured, the skin care changed to hydrocolloid dressing.

Sample Characteristics

  • The study sample (N = 61) was comprised of female patients with breast cancer.
  • Mean age was 58 years, with a range of 30–88 years.
  • Thirty-seven patients received chemotherapy, 13 concurrently and 24 sequentially.
  • Radiation therapy used a 6 MV photon beam at a dosage of 50 Gy applied tangentially in 25 fractions.

Setting

The study took place across multiple sites in Sydney, Australia.

Study Design

The study used a quasi-experimental design with patients as their own control.

Measurement Instruments/Methods

  • Patients were assessed from week 1–12.
  • The Radiation Therapy Oncology Group and European Organisation for Research and Treatment of Cancer skin scoring assessment was done weekly.
  • A five-point Likert scale was used to measure pain and pruritus for each area of the skin.

Results

  • Skin dosimetry data in the nonbolus area confirmed that no difference was present in the buildup effect (or lack thereof) between sorbolene and no-sting in those areas outside the skin covered with the bolus material.
  • For skin reaction score (p = 0.005) and pruritus (p = 0.011) the no-sting scores were less.
  • No evidence was found of a statistically significant trend in the relationship to pain scores or analgesia requirements.
  • Nine patients required analgesics for skin reaction in the sorbolene group and eight patients in the no-sting.
  • The cost and nursing time was relatively the same per patient, but the peak skin reactions occurred several weeks after radiation therapy was completed.
  • Two patients in the no-sting group had treatment delays because of pruritus.

Conclusions

No-sting may be beneficial in the mitigation of skin toxicity with radiation therapy.

Limitations

  • The study did not provide a control group without alternative treatment for comparison.
  • In longitudinal follow-up at six weeks data analysis, they included cases for which it was stated that no data was available. It was not clear how these were handled.
  • Initial cost of the product showed that no-sting was more expensive.
  • There was no subgroup analysis based on concurrent chemotherapy.
  • The sample size was small given the variability in patient treatment regimens.
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Graham, P.H., Plant, N., Graham, J.L., Browne, L., Borg, M., Capp, A., . . . Zissiadis, Y. (2013). A paired, double-blind, randomized comparison of a moisturizing durable barrier cream to 10% glycerine cream in the prophylactic management of postmastectomy irradiation skin care: Trans Tasman Radiation Oncology Group (TROG) 04.01. International Journal of Radiation Oncology, Biology, Physics, 86, 45–50. 

Study Purpose

A previous unblinded study demonstrated that an alcohol-free barrier film containing an acrylate terpolymer (ATP) was effective in reducing skin reactions compared with a 10% glycerine (sorbolene) cream. The different appearances of these products precluded a blinded comparison. To test the ATP principle in a double-blind manner required use of an alternative cream formulation, a moisturizing durable barrier cream (MDBC). This study tested the hypothesis that an ATP alcohol-free barrier film reduces the degree of radiation skin reaction compared with the 10% glycerine cream most commonly used for this purpose in women receiving postmastectomy radiation therapy in Australia.

Intervention Characteristics/Basic Study Process

The chest wall was divided into medial and lateral compartments, and patients were randomized to receive MDBC applied daily to the medial or lateral side and sorbolene to the other side. Patients were instructed to apply the separate creams daily at the start of radiation to each half of the area on the chest wall receiving radiation therapy and to continue until two weeks after radiation completion. Weekly observations, photographs, and symptom scores (pain and pruritus) were collected until week 12, or resolution of skin reactions if earlier. Skin dose was confirmed by centrally calibrated thermoluminescent dosimeters (TLDs).

Sample Characteristics

  • N = 318
  • AGE = 26–89 years
  • MALES: 0%, FEMALES: 100%
  • KEY DISEASE CHARACTERISTICS: Patients receiving radiation of at least 45 Gy in 25 fractions after total mastectomy
  • OTHER KEY SAMPLE CHARACTERISTICS: Aged 18 years or older, Eastern Cooperative Oncology Group performance status 0–2, ability to consent, ability to attend weekly for up to six weeks after treatment completion. Ineligibility: previous radiation therapy to chest wall, clinically evident cutaneous involvement by malignancy, pregnancy, known allergy to skin  care products

Setting

  • SITE: Multi-site  
  • SETTING TYPE: Not specified  
  • LOCATION: 12 radiation treatment centers in Australia

Phase of Care and Clinical Applications

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

Study Design

  • Paired, double-blind, randomized comparison

Measurement Instruments/Methods

  • TLD measurements were performed twice during radiation with two TLDs per skin compartment. TLDs were centrally calibrated.
  • Patient outcomes were scored weekly using National Cancer Institute Common Terminology Criteria for Adverse Events (CTCAE) version 3.0 scores.
  • Photographic audit of skin scores confirmed the pattern of reactions scored by clinicians.

Results

Rates of medial and lateral compartment skin reactions grade 3 or above were 23% and 41%, respectively. Rates by skin care products were identical at 32%. There was no significant difference between MDBC and sorbolene in the primary endpoint of peak skin reactions or secondary endpoints of area-under-curve (AUC) skin reaction scores.
 
Unpaired results: Skin reactions differed more by compartment than by product and were worse in the lateral compartment.  
 
Paired results for dichotomous skin reactions grade 3 and above: AUC scores showed no significant difference between treatment groups. 
 
Patient symptomatic skin scores: Greater pruritus was seen in the medial compartment, and greater pain symptoms were seen in the lateral compartment of the chest wall, but there was no significant difference by product. 
 
There was no difference in measured skin dose by treatment product, but lateral compartment doses were higher. Measured skin doses were higher in areas that developed grade 3–4 skin reaction versus those in grade 1–2 areas (P = .001).  

Conclusions

The MDBC did not reduce peak skin reaction compared to sorbolene. It is possible that this is related to the difference in formulation of the cream compared with film formulation.

Limitations

  • There was no clear consistency on how the cream should be used. Even though it was recommended for daily use, some patients did use it twice a day.

Nursing Implications

This study emphasizes the requirement for well-designed, appropriately powered, and controlled studies for skin care products. This study also potentially emphasizes that skin care products can vary in effectiveness based on formulation.

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Graham, P.H. (2002). Compression prophylaxis may increase the potential for flight-associated lymphoedema after breast cancer treatment. Breast, 11 (1), 66–71.

Purpose & Patient Population

Researchers conducted a survey to elicit information that would aid in the evaluation of the potential connection between flying and lymphedema. The study reported on 287 women with relapse-free breast cancer with known pathology/treatment and prospectively measured arm circumferences. Patient and treatment factors were age, type of surgery, number of nodes sampled and number positive, and radiotherapy technique.

Type of Resource/Evidence-Based Process

Subjects were surveyed by phone and mail regarding flight history, precautions taken, and incidences of arm swelling subsequent to flying.

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Gradalski, T., Ochalek, K., & Kurpiewska, J. (2015). Complex decongestive lymphatic therapy with or without Vodder II manual lymph drainage in more severe chronic postmastectomy upper limb lymphedema: A randomized non-inferiority prospective study. Journal of Pain and Symptom Management, 50, 750–757.

Study Purpose

To compare the effects of compression bandaging and physical exercises versus the same management augmented by an additional 30 minutes of manual lymph drainage

Intervention Characteristics/Basic Study Process

Sixty women post mastectomy were randomly assigned to either a compression bandage group or a manual lymph drainage group. Fifty-one women then completed two weeks of intensive therapy and six months of maintenance therapy (26 weeks total).

Sample Characteristics

  • N = 51   
  • MEAN AGE = CB-G group: 62 years (SD = 12.2), CDT-G group: 61.2 years (SD = 9.2)
  • FEMALES: 100%
  • CURRENT TREATMENT: Not applicable
  • KEY DISEASE CHARACTERISTICS: Breast cancer–related lymphedema

Setting

  • SITE: Single   
  • SETTING TYPE: Outpatient    
  • LOCATION: Krakow, Poland

Phase of Care and Clinical Applications

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

Study Design

  • Randomized, noninferiority, prospective study

Measurement Instruments/Methods

Summed truncated cone method was used to measures limb segment volume. Limb relative volume change (RVC) was measured using the formula treatment (SLafter treatmentNLbefore)/(NLafter SLbefore), where SL is swollen limb volume and NL is normal limb volume. Edema-related quality of life was measured using the Lymphedema Questionnaire.

Results

In both groups, a significant reduction in SL volume, LE volume, and RVC occurred after each day of the first week of therapy. Within the two-week intensive phase, a significant decrease in SL and LE volumes occured (p < 0.001). A rebound effect occurred in the CB-G group within the first month, but after six months, the SL and LE volumes in both groups were not statistically significant. Six months after finishing intensive therapy, no significant difference in lymph volumes existed between the two groups (p = 0.3).

Conclusions

Patients with postmastectomy LE may have a similar benefit of CDT without MLD on limb edema reduction. Compression bandaging combined with physical exercise may be considered a basic treatment option in limb LE. 

Limitations

  • Small sample (< 100)
  • Selective outcomes reporting
  • Measurement validity/reliability questionable
  • Findings not generalizable
  • Subject withdrawals ≥ 10%

Nursing Implications

The results of this study may help guide overall treatment in women post mastectomy with breast cancer–related lymphedema. However, the effect of manual lymph drainage remains unexplored because immediate lymph fluid draining images and long-term lymphatic changes were not investigated.

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Gouvea de Lima, A., Villar, R.C., de Castro, G., Jr., Antequera, R., Gil, E., Rosalmeida, M.C., … Snitcovsky, I.M.L. (2012). Oral mucositis prevention by low-level laser therapy in head-and-neck cancer patients undergoing concurrent chemoradiotherapy: A phase III randomized study. International Journal of Radiation Oncology, Biology, Physics, 82, 270–275.

Study Purpose

To evaluate the efficacy of low-level laser therapy (LLLT) to decrease severe oral mucositis and reduce radiation therapy (RT) interruptions

Intervention Characteristics/Basic Study Process

 Patients received either gallium aluminum arsenide LLLT 2.5 J/cm2 or placebo laser before each radiation fraction.

Sample Characteristics

  • The study reported on 75 patients with a median age of 55 years.
  • The sample was 76% male and 24% female. 
  • Patients had head and neck cancer, which was primarily squamous cell carcinoma.
  • All patients underwent conventionally fractionated RT s-GY daily fractions, five times per week.

Setting

This was a single-site, outpatient study conducted in Brazil.

Phase of Care and Clinical Applications

Patients were undergoing the active treatment phase of care.

Study Design

This was a randomized, double-blind, phase III study.

Measurement Instruments/Methods

  • The National Cancer Institute (NCI) Common Toxicity Criteria (CTC), version 2, was used.
  • A visual analog scale was used.

Results

  • Appearance of grade 3 mucositis was delayed in the patients treated with LLLT.
  • Unplanned RT interruptions because of severe mucositis were necessary for six patients in the placebo arm and none in the LLLT arm.
  • Pain scores and analgesic medication use were similar in the two arms.
  • No significant differences were found between groups.

Conclusions

LLLT benefit was limited to fewer interruptions in RT.

Limitations

  • The sample size was small with fewer than 100 patients.
  • Another dosage or a specific type of LLLT may be more effective.

Nursing Implications

LLLT dosage, schedule, specific laser type, and availability all need to be addressed.

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Gøtzsche, P.C., & Johansen, H.K. (2014). Nystatin prophylaxis and treatment in severely immunodepressed patients. Cochrane Database of Systematic Reviews, 9, CD002033. 

Purpose

STUDY PURPOSE: To determine if nystatin prophylaxis or treatment for fungal infection decreases morbidity and mortality in immunocompromised patients

TYPE OF STUDY: Meta-analysis and systematic review

Search Strategy

DATABASES USED: PubMed (1966–July 2014)
 
INCLUSION CRITERIA: All randomized trials, irrespective of language, that compared nystatin with placebo, an untreated control group; fluconazole or amphotericin B were eligible.
 
EXCLUSION CRITERIA: Excluded cases of oropharyngeal and vulvovaginal candidiasis, skin infections, Candida in the urine, and vaguely described infections

Literature Evaluated

TOTAL REFERENCES RETRIEVED: 18
 
EVALUATION METHOD AND COMMENTS ON LITERATURE USED: The outcomes were meta-analyzed as relative risks with the Mantel-Haenszel technique. Because heterogeneity of the studies was expected because of various designs, diagnoses, drugs, doses, and routes of administration, and criteria for fungal invasion and colonization, a random-effects model was used. A fixed-effect model analysis was preferred, however, if the p value was greater than 0.1 for the test of heterogeneity. Ninety-five percent confidence intervals (CIs) were presented.

Sample Characteristics

  • FINAL NUMBER STUDIES INCLUDED = 14
  • TOTAL PATIENTS INCLUDED IN REVIEW = 1,569
  • KEY SAMPLE CHARACTERISTICS: Twelve of the 14 trials studied nystatin prophylaxis, and two studied nystatin treatment. Eleven trials included patients with acute leukemia, solid cancer, or bone marrow transplantation. One trial involved patients with liver transplantation, one trial involved patients who were critically ill from surgery and/or trauma, and one trial involved patients with AIDS.

Phase of Care and Clinical Applications

PHASE OF CARE: Active antitumor treatment

Results

Nystatin was compared to placebo in three trials, with fluconazole in 10, and amphotericin B in one. The dose varied from 0.8 MIE to 72 MIE daily and was 2 mg/kg/d in a liposomal formulation. The effect of nystatin on fungal colonization was similar to that of placebo (relative risk [RR] = 0.85, 95% CI [0.65, 1.13]). No statistically significant difference existed between fluconazole and nystatin on mortality (RR = 0.75, 95% CI [0.54, 1.03]), whereas fluconazole was more effective in preventing invasive fungal infection (RR = 0.4, 95% CI [0.17, 0.93]) and colonization (RR = 0.5, 95% CI [0.36, 0.68]).
 
No proven fungal infections existed in a small trial that compared amphotericin B with liposomal nystatin. The results were very similar if the three studies not performed with patients with cancer were excluded.

Conclusions

Nystatin cannot be recommended for prophylaxis or the treatment of Candida infections in immunodepressed patients.

Nursing Implications

Nystatin is no more effective than placebo for the prevention or treatment of fungal infections in immunocompromised patients.

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Gottschling, S., Reindl, T.K., Meyer, S., Berrang, J., Henze, G., Graeber, S., … Graf, N. (2008). Acupuncture to alleviate chemotherapy-induced nausea and vomiting in pediatric oncology—A randomized multicenter crossover pilot trial. Klinische Padiatrie, 220, 365–370. 

Study Purpose

To evaluate the efficacy and acceptance of acupuncture as an additive antiemetic treatment during highly emetogenic chemotherapy (HEC) in pediatric patients with cancer

Intervention Characteristics/Basic Study Process

Patients receiving chemotherapy were randomized to receive antiemetic medication plus acupuncture or antiemetic medication alone.

  • Group 1 participants received acupuncture before chemotherapy, were offered acupuncture daily during chemotherapy, and received no acupuncture in their subsequent chemotherapy.
  • Group 2 received treatments in the opposite order.

Acupuncture points were based on the acupuncturists’ decision, until the patient reported a “de Qi” sensation.

Antiemetic rescue medication, number of retching and vomiting episodes, and a short essay of the acupuncture experience were recorded.

Sample Characteristics

  • The sample consisted of 23 participants.
  • The patients' ages ranged from 6-18 years with a mean of 13.6 years and standard deviation of 2.9 years.
  • The sample was 56.5% female and 43.5% male.
  • Diagnoses were Ewing sarcoma, rhabdomyosarcoma, osteosarcoma, undifferentiated sarcoma, and synovial sarcoma.
  • Patients who had full control of chemotherapy-induced nausea and vomiting (CINV) without need for antiemetic rescue medication during the first chemotherapy course were excluded from the study.

Setting

This study was conducted in multiple inpatient settings in five German cancer centers.

Study Design

This was a prospective, randomized, crossover clinical trial pilot study.

Measurement Instruments/Methods

An open-form essay was used to document the subjective experience of acupuncture.

Results

In evaluating chemotherapy courses, overall, no significant differences were found in retching or vomiting episodes. In evaluating differences between group 1 and group 2, no significant effect was found with dexamethasone (p = 0.145); however, the acupuncture group was associated with lower phenothiazine medication use (p = 0.001) and less retching and vomiting episodes (p = 0.01).

Conclusions

Acupuncture with baseline antiemetic medication was associated with less phenothiazine use and less retching and vomiting among children receiving HEC.

Limitations

  • The sample was small.
  • The number of times that the children received acupuncture depended on individual patient requests and was not recorded.
  • Acupuncture sessions did not follow a standard procedure of needle placement, and differences among acupuncturists may provide differing results.
  • The methods for recording retching and vomiting episodes were not documented.
  • Although one of the study aims was to evaluate acceptance of acupuncture, the authors did not specify how this was measured.
  • The title suggests that the study evaluated nausea, but this was not discussed.

Nursing Implications

Acupuncture may provide some relief of retching or vomiting episodes associated with HEC, but the intervention should be used in combination with standard antiemetic treatment.

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Gothard, L., Haviland, J., Bryson, P., Laden, G., Glover, M., Harrison, S., . . . Yarnold, J. (2010). Randomised phase II trial of hyperbaric oxygen therapy in patients with chronic arm lymphoedema after radiotherapy for cancer. Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology, 97(1), 101–107.

Study Purpose

To assess the effectiveness of hyperbaric oxygen (HBO) therapy on reducing arm lymphedema in patients with early-stage breast cancer

Intervention Characteristics/Basic Study Process

Participants were divided into the control and the experimental group at a ratio of 1 to 2, respectively. The experimental group received HBO therapy and breathed 100% oxygen at 2.4 atmospheres absolute for 100 minutes with two five-minute air breaks. The sessions were conducted 30 times in a six-week period or five times a week. Both the control and experimental groups received patient education on standard care for lymphedema and hosiery when appropriate.

Sample Characteristics

  • The study sample was comprised of 58 patients.
  • Mean age of the control group was 62.1 years and the experimental group was 63.2 years.
  • All patients had breast cancer and most (97%) had diagnosed lymphedema.
  • Two patients had Hodgkin lymphoma with radiotherapy.
  • Patients had finished adjuvant radiotherapy.
  • Patients had a minimum of 15% increase in limb volume.


 

Setting

The study took place in multiple hospitals in the United Kingdom.

Phase of Care and Clinical Applications

Patients were undergoing active lymphedema treatment.

Study Design

The study used a randomized phase II study design.

Measurement Instruments/Methods

  • A Perometer measured limb volume.
  • An 8% reduction was maintained as a clinically significant reduction in arm volume.
  • Lymphoscintigraphy was performed to measure the fractional removal rate of the radioisotopic tracer at baseline and 12 months.
  • Acquisitions were performed at 20, 60, 90, 120, and 180 minutes.
  • The removal rate was calculated by the computer using a regression slope.
  • Extracellular water content was measured at baseline and 12 months using dielectric constant measurements.
  • Two measurements were taken: one third the distance from the antecubital crease to the forearm and one half the distance from the antecubital crease to the upper arm.
  • Quality of life was assessed using the United Kingdom SF-36, completed before randomization into groups, at baseline, and at 3, 6, 9, and 12 months.

Results

There was not a statistically significant change in limb volume between the control group (p = 0.64) and the experimental group (p = 0.50) at 12 months after baseline. The investigators define a positive response as an 8% reduction in arm volume. Thirty percent of the experimental group versus 18.8% of the control group responded to meet these criteria but was also statistically insignificant (p = 0.50). Lymphatic clearance rates were similar among groups and were not significant findings. Quality of life findings were similar among both groups and were not significant.
 

Conclusions

The study suggests that HBO therapy when added to best standard treatment of lymphedema in patients with breast cancer is not effective. The study does not confirm earlier reports of a therapeutic effect of HBO.

Limitations

  • The sample size was small, with less than 100 participants.
  • The sample size for the control and experimental group were different, which could have affected the statistical analysis comparison and leaves room for imbalances.
  • The study had a risk of bias because it had no blinding and the sample characteristics.
  • The findings are not generalizable.
  • The average time from radiotherapy treatment post-operatively to participation in the study was 12 years, which may also effect the results of remodeling of fibrotic tissues from HBO.

Nursing Implications

The study suggests that HBO therapy is an ineffective therapy for treating lymphedema in patients with breast cancer. The therapy should not be enacted into practice. Nursing researchers should analyze the randomized trial and non-randomized trials of this treatment program to identify confounding variables that may have made the non-randomized trial results significant and the randomized trial results not significant. If the study is repeated a larger sample size should be used.

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