The Effect of Phase of Menstrual Cycle on Sympathetic Skin Response Among Healthy Young Indian Women.

This descriptive study was undertaken to investigate the influence of menstrual cycle on sympathetic skin response (SSR) during different phases of menstrual cycle in young healthy Indian women. A comparison of SSR latencies and amplitudes were done in the follicular, ovulatory and mid luteal phases of menstrual cycle. Fifty women in age group of 18 – 25 years having regular menstrual cycles were chosen for this study. After confirming the regularity of menstrual cycle, SSR was performed on them. The recording was done under standardized conditions using standardized procedure. Amplitude of SSR was found to vary in the three phases, but the differences were statistically not significant. Latency of SSR was found to be greatest in the follicular phase (1.54 ± 0.22 s) and least in the mid-luteal phase (1.35 ± 0.18 s). Statistically significant differences were found between mean SSR latency in the follicular phase and the other two phases (p < 0.01). This study concludes that SSR is enhanced during the mid-luteal phase in women with regular menstrual cycles indicating sympathetic dominance.

Electrophysiological changes in acute guillain-barre syndrome.

Aim: To study the various electrophysiological changes in the motor conduction, sensory conduction and F wave latencies of acute Guillain-Barre Syndrome patients. Methods: Sixteen patients with acute GBS were included in this study. They were subjected to various nerve conduction studies (NCS) following standardized procedures. The mean values obtained for the various nerve conduction parameters were compared against the corresponding standardized values using Student’s t-test. P value less that 0.05 was considered significant. Results: The results of NCS in GBS patients were as follows: 1.The motor nerve conduction velocity was significantly lower and the motor nerve conduction latency was significantly prolonged. 2. The sensory nerve action potential conduction velocity and amplitude remained normal in most of these individuals. 3. F wave latency was significantly prolonged. Conclusion: Acute Guillain-Barre Syndrome patients manifest with abnormal motor nerve conduction parameters and F wave latency. Electrophysiological studies would help the researchers to diagnose the disease at an early stage.