Israel Medical Association Journal

Background: Radiation-induced dermatitis is commonly seen during radiotherapy for breast cancer. Melatonin-based creams have shown a protective effect against ultraviolet-induced erythema and a radioprotective effect in rats.

Objectives: To evaluate the efficacy of melatonin-containing cream in minimizing acute radiation dermatitis. 

Methods: In this phase II, prospective, randomized, placebo-controlled double-blind study, patients who underwent breast-conserving surgery for stage 0-2 breast cancer were randomly allocated to melatonin emulsion (26 women) or placebo (21 women) for twice daily use during radiation treatment and 2 weeks following the end of radiotherapy. All women received 50 Gy whole breast radiation therapy with 2 Gy/fx using computed tomography-based 3D planning. Patients were examined and completed a detailed questionnaire weekly and 2 weeks following the end of treatment.

Results: The occurrence of grade 1/2 acute radiation dermatitis was significantly lower (59% vs. 90%, P = 0.038) in the melatonin group. Women older than 50 had significantly less dermatitis than younger patients (56% vs. 100%, P = 0.021). The maximal radiation dermatitis in the study group was grade 2 in 15% of the treated patients.

Conclusions: Patients treated with melatonin-containing emulsion experienced significantly reduced radiation dermatitis compared to patients receiving placebo.

Background: Radiation exposure is a well-known risk factor for well-differentiated thyroid cancer (WDTC). However, disease characteristics, optimal treatment, time from exposure to disease appearance, and the effect on outcome of age at initial exposure have yet to be determined. 

Objectives: To identify the characteristics of radiation-induced thyroid carcinoma.

Methods: We retrieved the charts of all patients previously exposed to radiation who were diagnosed with WDTC between the years 1985 and 2013 in a tertiary referral center. 

Results: Forty-four patients were reviewed. Median time from radiation exposure to diagnosis was 23 years. These patients had higher rates of aerodigestive symptoms and distant metastases on presentation than seen in non-radiated patients. Patients who were exposed to radiation before age 15 years tended to develop the disease at a younger age but had a longer latency period (34.7 ± 15.3 vs. 16.3 ± 10 years, P < 0.001) and none had significantly higher rates of vocal cord palsy, hoarseness on presentation, or aggressive variants on histology compared to patients exposed to radiation at an older age. Disease-specific survival (DSS) was the same for both groups and were similar to that seen in the general population (95% 20 year DSS).

Conclusions: Radiation-induced thyroid cancer has a more aggressive presentation and the age at exposure affects the presentation of disease. Nonetheless, appropriate treatment leads to a favorable prognosis.

 

Background: The rate of mitral bioprosthesis implantation in clinical practice is increasing. Transcatheter valve-in-valve implantation has been described for high risk patients requiring redo valve surgery. 

Objectives: To report our experience with transapical valve-in-valve implantation for failed mitral bioprosthesis.

Methods: Since 2010, 10 patients have undergone transapical valve-in-valve implantation for failed bioprosthesis in our center. Aortic valve-in-valve implantation was performed in one of them and mitral valve-in-valve implantation in nine. Mean age was 82 ± 4 years and 6 were female (67%). Mean time from original mitral valve (MV) replacement to valve-in-valve procedure was 10.5 ± 3.7 years. Follow-up was completed by all patients with a mean duration of 13 ± 12 months. 

Results: Preoperatively, all patients presented with significant mitral regurgitation; two with mitral stenosis due to structural valve failure. All nine patients underwent successful transapical valve-in-valve implantation with an Edwards Sapien™ balloon expandable valve. There was no in-hospital mortality. Mean and median hospital duration was 15 ± 18 and 7 days respectively. Valve implantation was successful in all patients and there were no major complications, except for major femoral access bleeding in one patient. At last follow-up, all patients were alive and in NYHA functional class I or II. Echocardiography follow-up demonstrated that mitral regurgitation was absent or trivial in seven patients and mild in two. At follow-up, peak and mean gradients changed from 26 ± 4 and 8 ± 2 at baseline to 16.7 ± 3 and 7.3 ± 1.5, respectively.

Conclusions: Transcatheter transapical mitral valve-in-valve implantation for failed bioprosthesis is feasible in selected high risk patients. Our early experience with this strategy is encouraging. Larger randomized trials with long-term clinical and echocardiographic follow-up are recommended.

 

Background: Androgen deprivation therapy (ADT) added to radiation therapy (RT) in intermediate to high risk prostate cancer negatively impacts quality of life. 

Objectives: To compare health-related quality of life (HR-QOL) in patients receiving combined RT with and without ADT 

Methods: The study population comprised patients treated with definitive RT for prostate cancer who completed the Expanded Prostate Cancer Index Composite-26 form between 3 and 24 months after completing RT. Covariance and a stepwise backward logistic regression model was used. 

Results: Data were available for 143 patients who received RT+ADT and 70 who received RT alone. The sexual function and hormonal vitality scores of patients receiving RT+ADT were significantly lower than those receiving RT alone (P < 0.0001). Patients with only compulsory school education had significantly lower sexual function scores than patients with university level education (P ≤ 0.005). Patients with depression had significantly lower hormonal vitality scores than those without depression (P ≤ 0.0001). 

Conclusions: The addition of ADT to RT is responsible for decrements in quality of life in the sexual and hormonal vitality domains, which is further compounded by lack of education and depression. This underlines the need to improve education, identify and treat depression, and develop strategies to improve the quality of life of patients receiving combination therapy. 

 

Background: Granulomatous lobular mastitis (GLM) is a rare disorder that can clinically mimic breast carcinoma. The recommendation for diagnosis and treatment of GLM has not yet been established. 

Objectives: To assess a series of GLM patients, including their clinical presentation, diagnosis, treatment and outcome. 

Methods: We retrospectively analyzed the clinical data and treatment of 17 female patients with biopsy-proven GLM. Breast tissue was obtained by a core needle biopsy (15 patients) or open biopsy (2 patients). Images were reviewed by an experienced radiologist.

Results: The mean age of the patients at diagnosis was 44.6 ± 12.6 years. Five patients (29%) presented with bilateral disease, and seven (41%) presented with a mass, suggesting the initial diagnosis of breast carcinoma. Treatment comprised observation alone (23%), antibiotics (58.8%) and/or corticosteroids (with or without methotrexate) (35%). At the end of the study 70.6% of the patients demonstrated complete remission. None of the patients developed any systemic (granulomatous) disease or breast carcinoma during the follow-up period (4.7 ± 3.8 years). 

Conclusions: Core needle biopsy is mandatory for the diagnosis of GLM and the exclusion of breast carcinoma. The recommended treatment modalities are observation alone or corticosteroids; surgery should be avoided. GLM is a benign disease with a high rate of resolution and complete remission.

 

Background: The efficacy of video-assisted thoracoscopic surgery lobectomy in patients with previous coronary artery bypass grafting (CABG) surgery is controversial.

Objectives: To investigate whether skeletonized left internal mammary artery (LIMA) mobilization contributes to the development of severe adhesions, which will affect what type of lung surgery (open or closed procedure) will be required in the future.

Methods: Eight patients (mean age 73.9 years) with previous CABG surgery using a LIMA to left anterior descending (LAD) graft underwent left-sided lobectomy for operable non-small cell lung carcinoma. 

Results: The lobectomy by thoracotomy rate was 62.5% (5 patients), generally in patients with tumors in the left upper lobe or in patients post-neoadjuvant chemotherapy, while the video-assisted thoracic surgery lobectomy rate was 37.5% (3 patients). Mean hospital stay was 8.3 days. There was no mortality or major morbidity, apart from six minor complications in four patients (50%) (air leak, atrial fibrillation, atelectasis, pneumonia). 

Conclusions: Patients with operable non-small cell lung carcinoma following CABG surgery who need left upper lobe resection do not benefit from the video-assisted thoracoscopic surgery technique due to significant adhesions between the LIMA to LAD graft and the lung. The method of preserving a small portion of the lung on the LIMA to LAD graft may help during left upper lobe resections. Adhesions in the left pleural space after LIMA mobilization appear to generally minimally affect left lower lobe video-assisted thoracoscopic surgery.

 

Background: While earlier studies indicated that cholesterol levels decrease significantly after an acute myocardial infarction (MI), a more recent study refuted this observation. 

Objectives: To assess changes in plasma lipid levels after onset of acute MI, and determine important predictors of lipid dynamics.

Methods: We prospectively measured lipid levels of patients who presented with an acute MI. Blood samples were drawn on admission to the hospital (day 1), after fasting at least 12 hours overnight (day 2), and on the 4th day of hospitalization (day 4). 

Results: Of 67 acute MI patients, 30 were admitted for ST elevation MI (STEMI) and 37 for non-STEMI. Both total cholesterol and low density lipoprotein cholesterol (LDL-C) levels decreased significantly (by 9%) in the 24 hours after admission and by 13% and 17% respectively on day 4. High density lipoprotein cholesterol (HDL-C) levels as well as triglycerides did not change significantly. Independent predictors of LDL-C decrease were the presence of diabetes mellitus [odds ratio (OR) 6.73, P = 0.01), and elevated cardiac troponin T (cTnT) levels (OR 1.81, P < 0.04).

Conclusions: LDL-C levels decrease significantly after an acute MI. The reduction is correlated with cTnT levels. Diabetes is a strong independent predictor of LDL-C decrease. In acute MI patients only measurements taken within 24 hours of onset should be used to guide selection of lipid-lowering medication.

 

Abstract

Background: Heart rate variability (HRV) analysis has been shown to be a predictor of sudden cardiac death and all-cause mortality in patients with cardiac disease.

Objectives: To examine whether newer HRV analysis algorithms, as used by the HeartTrends device, are superior to exercise stress testing (EST) for the detection of myocardial ischemia in patients without known coronary artery disease (CAD).

Methods: We present pilot data of the first 100 subjects enrolled in a clinical trial designed to evaluate the yield of short-term (1 hour) HRV testing for the detection of myocardial ischemia. The study population comprised subjects without known CAD referred to a tertiary medical center for EST with single-photon emission computed tomography (SPECT) myocardial perfusion imaging (MPI). All patients underwent a 1 hour electrocardiographic acquisition for HRV analysis with a HeartTrends device prior to EST with MPI. Sensitivity, specificity, and positive and negative predictive values (PPV and NPV, respectively) were calculated for EST and HRV analysis, using MPI as the gold standard for the non-invasive detection of myocardial ischemia.

Results: In this cohort 15% had a pathologic MPI result. HRV analysis showed superior sensitivity (85%), PPV (50%) and NPV (97%) as compared to standard EST (53%, 42%, 90%, respectively), while the specificity of the two tests was similar (86% and 85%, respectively). The close agreement between HRV and MPI was even more pronounced among patients > 65 years of age.

Conclusions: Our pilot data suggest that the diagnostic yield of the novel HeartTrends HRV algorithm is superior to conventional EST for the non-invasive detection of myocardial ischemia.

Background: The Syntax score (SS) is a helpful tool for determining the optimal revascularization strategy regarding coronary artery bypass surgery (CABG) vs. percutaneous coronary intervention (PCI) in patients with complex coronary disease. While an association between higher SS and mortality was found for PCI patients, no such association was found for CABG patients.

Objectives: To assess whether the SS predicts late mortality in patients undergoing CABG in a real-world setting.

Methods: The study included 406 consecutive patients referred for CABG over a 2 year period. Baseline and clinical characteristics were collected. Angiographic data SS were interpreted by an experienced angiographer. Patients were divided into three groups based on SS tertiles: low ≤ 21 (n=205), intermediate 22–31 (n=138), and high ≥ 32 (n=63). Five year mortality was derived from the National Mortality Database.

Results: Compared with low SS, patients with intermediate and high scores were significantly older (P = 0.02), had lower left ventricular ejection fraction (64% vs. 52% and 48%, P < 0.001) and greater incidence of acute coronary syndrome, left main disease, presence of chronic total occlusion of the left anterior descending and/or right coronary artery, and a higher EuroSCORE (5% vs. 5% and 8%, P < 0.01). Patients with intermediate and high SS had higher 5 year mortality rates (18.1% and 19%, respectively) compared to patients with low score (9.8%, P = 0.04). On multivariate analysis, SS was not an independent predictor of late mortality.

Conclusion: Patients with lower SS had lower mortality after CABG, which is attributable to lower baseline risk. SS is not independently predictive of late mortality in patients with multi-vessel coronary artery disease undergoing CABG.

Background: Discharge summaries after hospitalization provide the most reliable description and implications of the hospitalization. A concise discharge summary is crucial for maintaining continuity of care through the transition from inpatient to ambulatory care. Discharge summaries often lack information and are imprecise. Errors and insufficient recommendations regarding changes in the medical regimen may harm the patient’s health and may result in readmission.

Objectives: To evaluate a quality improvement model and training program for writing postoperative discharge summaries for three surgical procedures.

Methods: Medical records and surgical discharge summaries were reviewed and scored. Essential points for communication between surgeons and family physicians were included in automated forms. Staff was briefed twice regarding required summary contents with an interim evaluation. Changes in quality were evaluated.

Results: Summaries from 61 cholecystectomies, 42 hernioplasties and 45 colectomies were reviewed. The average quality score of all discharge summaries increased from 72.1 to 78.3 after the first intervention (P < 0.0005) to 81.0 following the second intervention. As the discharge summary’s quality improved, its length decreased significantly.

Conclusions: Discharge summaries lack important information and are too long. Developing a model for discharge summaries and instructing surgical staff regarding their contents resulted in measurable improvement. Frequent interventions and supervision are needed to maintain the quality of the surgical discharge summary.