Donor artery aneurysm formation following the ligation of haemodialysis arteriovenous fistula: a systematic review and case reports.

PURPOSE: The purpose of this study is to investigate the pathogenesis, presentation and diagnosis of donor artery aneurysm formation following arteriovenous fistula (AVF) ligation and reach a consensus on their management. METHODS: A systematic review of literature in Ovid, MedLine, Embase, Scopus and CINHAL in the English language from 1951 to 2014 was performed. This was accompanied by two case reports. A total of 12 articles with 23 case reports were identified. Variables including patient's demographics, signs, symptoms, fistula type, duration of fistula use, time to aneurysm formation, renal transplantation, diagnostic modality, aneurysm type and size, type of surgery and outcome were reviewed. RESULTS: The data demonstrate a male predominance (5:1) and a median age of 47 years (range, 27-75 years). The median duration of access was 54 months (range, 6-300 months). The median time from ligation to aneurysm was 120 months (range, 6-280 months). The commonest aneurysm was of the brachial artery (BA, n = 21, 84%). The commonest type of AVF was radiocephalic (n = 15, 60%) followed by brachiocephalic AVF (n = 9, 36%). The management of choice was aneurysmectomy followed by interposition vein grafting (n = 12, 50%) with a median reported patency of 12 months (range, 1-38 months). This was followed by polytetrafluoroethylene (PTFE) grafting (n = 6, 25%) with a median reported patency of 6 months (range, 1-48 months). CONCLUSIONS: The pathogenesis of donor artery aneurysms remains contentious. This review suggests that duplex is the investigative modality of choice and aneurysmectomy with interposition grafting is preferred over bypass.

The Role of Educational Level in Glycemic Control among Patients with Type II Diabetes Mellitus.

OBJECTIVES: To evaluate the impact of the educational level on glycemic control among patients with type II diabetes mellitus. METHODS: A disproportional systematic stratified sample of 384 patients, based on educational level, was selected from patients of type II diabetes attending the Primary Care Clinic of King Khalid University Hospital, over a period of 6 months in 2012-2013. A questionnaire sought information about socio-demographic factors, clinical characteristics, awareness of diabetic complications and self-care management behaviors. Weight and height were measured. Poor glycemic control was defined as HbA1c ≥7%. RESULT: The rate of patients who had poor glycemic control is 67.7%. The educational level had no impact on glycemic control, but the patients of high educational level had better awareness of the complications and a high rate of adherence to diet. About 70.5% of patients were aware of two or more diabetic complications. The factors associated with poor control included increased duration of diabetes, use of insulin and oral hypoglycemic agents combination, being obese or overweight, poor adherence to diet, poor adherence to exercise and poor compliance with follow up. This study found a high rate of poor adherence to diet (68%) and poor adherence to exercise (79.4%). CONCLUSION: The proportion of patients with poor glycemic control was high in this study. This study showed that educational level may not be a good predictor of better therapeutic compliance. In-spite of the significant importance of appropriate diet and exercise in the control of diabetes, there was a high rate of poor adherence to diet and to exercise, especially among females. Educational programs that emphasize adherence to treatment regimens as a whole, especially to diet, to exercise and to regular follow up are of greater benefit in glycemic control as compared to compliance of medications alone.