Tahniyah Haq1, Tofail Ahmed2, Zafar A Latif3, Mohammad A Sayeed4, Sheikh M Ashrafuzzaman3. 1. Department of Endocrinology, Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh. Electronic address: tahniyah81@bsmmu.edu.bd. 2. Department of Endocrinology, Bangladesh Institute of Research, Rehabilitation of Diabetes, Endocrine and Metabolic Disorders (BIRDEM), Dhaka, Bangladesh. 3. Department of Endocrinology, BIRDEM, Dhaka, Bangladesh. 4. Department of Community Medicine, Ibrahim Medical College, Dhaka, Bangladesh.
Abstract
AIMS: The aim was to see the frequency of CAN in type 2 diabetes mellitus patients with peripheral neuropathy, and its association with peripheral nerve conduction abnormalities. METHODS: A cross-sectional study at BIRDEM was conducted in 62 patients with type 2 diabetes mellitus having electrophysiologically diagnosed peripheral neuropathy. CAN was detected by four clinical tests - heart rate response to deep breathing and valsalva maneuver, blood pressure response to standing and sustained handgrip. RESULT: The study showed that all patients had CAN - 14.52% had early, 26.67% had definitive and 59.68% had severe CAN. Patients with severe CAN had significantly reduced nerve conduction velocity and amplitude of peripheral nerves (sural 4.36 ± 12.77 vs 9.65 ± 17.77 m/s, p = 0.009; 2.23 ± 1.89 vs 3.01 ± 2.76 mV, p = 0.001; peroneal 7 ± 4.23 vs 8.53 ± 5.99 mV, p = 0.047; tibial 0.008 ± 0.03 vs 0.026 ± 0.05 mV, p = 0.009) and higher serum triglyceride levels (221.17 ± 120.61 vs 197.76 ± 68.43 mg/dl, p = 0.033). CONCLUSION: Diabetic patients with peripheral neuropathy have CAN, the severity of which increases with worsening neuropathy.
AIMS: The aim was to see the frequency of CAN in type 2 diabetes mellituspatients with peripheral neuropathy, and its association with peripheral nerve conduction abnormalities. METHODS: A cross-sectional study at BIRDEM was conducted in 62 patients with type 2 diabetes mellitus having electrophysiologically diagnosed peripheral neuropathy. CAN was detected by four clinical tests - heart rate response to deep breathing and valsalva maneuver, blood pressure response to standing and sustained handgrip. RESULT: The study showed that all patients had CAN - 14.52% had early, 26.67% had definitive and 59.68% had severe CAN. Patients with severe CAN had significantly reduced nerve conduction velocity and amplitude of peripheral nerves (sural 4.36 ± 12.77 vs 9.65 ± 17.77 m/s, p = 0.009; 2.23 ± 1.89 vs 3.01 ± 2.76 mV, p = 0.001; peroneal 7 ± 4.23 vs 8.53 ± 5.99 mV, p = 0.047; tibial 0.008 ± 0.03 vs 0.026 ± 0.05 mV, p = 0.009) and higher serum triglyceride levels (221.17 ± 120.61 vs 197.76 ± 68.43 mg/dl, p = 0.033). CONCLUSION:Diabeticpatients with peripheral neuropathy have CAN, the severity of which increases with worsening neuropathy.