The Effect Of Start Time Of Crystaloid İnfusion On Blood Pressure İn Patients With Hypertension Who Underwent Spinal Anesthesia

Objective: In our study we retrospectively investigated the effect of starting time of crystaloid infusion on blood pressure in patients with the diagnosis of hypertension who underwent spinal anesthesia. Methods: A total of 54 patients with the diagnosis of hypertension who underwent spinal anesthesia were divided into two groups according to whether bolus crystaloid infusion was performed before or after spinal anesthesia by reviewing observation records of anesthesia. 15 ml kg-1 intravenous of crystaloid infusion was given within an average 20 minutes for Group I (n=27) before spinal anesthesia and for Group II (n=27) after spinal anesthesia. Demographic data, hemodynamic parameters, sensory and motor block levels, vasopressor drug administration and side effects of the patients were recorded. Decrease in systolic blood pressure (SBP) more than 20% compared to baseline SBP or SBP below 90 mmHg was considered hypotension. Results: No difference was detected between the groups in terms of demographic data and operation time. It was found that the incidence of hypotension was 77.9% in all patients (88.9% in Group I, 77.8% in Group II). Conclusion: In our study, in patients with diagnosis of hypertension who underwent spinal anesthesia administration of crystaloids as bolus prior to spinal anesthesia or after spinal anesthesia had similar results on rates of hypotension.

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