Significance of shock index in normotensive & hypertensive individuals

Objective: To determine SI index in normotensive and hypertensive individual to asses any correlation in hypertensive individuals. Material and Methods: Systolic and diastolic blood pressures were determined in normotensive (n=104) and hypertensive (i.e. treated hypertensive (n=76) and non-treated (n=32)) subjects in supine position. Shock Index (SI) was determined as the ratio of Heart Rate/ Systolic Blood Pressure and normal value was considered in the range of 0.5-0.7. Recorded data was analyzed between two groups by applying unpaired t- test. The P values less than 0.05 (P 0.05) were considered as statistically significant. To find out relationship between blood pressure and shock index in different study groups Pearson correlation coefficient was determined. Results: Values of shock index were found higher in normotensive as compared to values recorded in treated hypertensive and non-treated hypertensive group. Non treated hypertensive group recorded higher values of shock index than treated hypertensive group. Conclusions: The accepted value of shock index is generally considered in the range from 0.5 to 0.7.The value in this range indicated hemodynamic stability in the study groups, since SI were not > 0.9 or 0.5 which were considered as an independent predictor in previous studies for the mortality of emergency patients .To consider importance of SI index in hypertensive prospective studies are needed to confirm the result.