Electrophysiological abnormalities in upper extremities after brachiocephalic A-V fistulas construction in predialysis patients

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Abstract

Background: Peripheral neuropathy is considered a common complication in patients suffering from advanced chronic kidney disease (CKD). Superimposed peripheral multiple neuropathies may complicate arteriovenous (A-V) fistulas construction. Aim: To evaluate, prospectively, the influence of brachiocephalic A-V fistulas construction on the peripheral nerves of the same extremity and to characterize the patients at risk for developing ischemic and neurological complications. Patients and Methods: Twenty patients suffering from advanced CKD were enrolled in the study: 10 diabetic and 10 non-diabetic patients. All patients underwent electrophysiological evaluation one week before, 3 weeks and 3 months after surgery. Median, ulnar and radial nerves were studied. Results: In non-diabetic patients MNCV was normal before and after surgery, but were significantly lower and reduced progressively and significantly after surgery in diabetic patients (p≤0.02). In both non-diabetic and diabetic patients SNCV was reduced, but were significantly lower in diabetic patients before and after surgery (p≤0.03). In diabetic patients it reduced progressively and significantly after surgery (p<0.01). Thirty percent of patients developed local edema and significant decrease of CMAP of median nerve three weeks after surgery (p=0.02) with complete resolution at three months. Conclusion: Diabetic uremic patients are at increased risk to develop disabling neurological complications after the construction of A-V fistulas. Diabetes was the only predictive risk factor for developing these complications. Prevention requires careful preoperative electrophysiological evaluation and postoperative follow-up.

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Hassan, K., Amir, S., Michael, S., Simri, W., Haj, M., Shasha, S. M., & Kristal, B. (2004). Electrophysiological abnormalities in upper extremities after brachiocephalic A-V fistulas construction in predialysis patients. Renal Failure, 26(2), 111–117. https://doi.org/10.1081/JDI-120038484

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