The Role of Carotid Flow Time-Based Fluid Administration in the Incidence of Hypotension After Spinal Anesthesia in Patients Undergoing Caesarean Section
Nurali Mamasabır Uulu, Demet Laflı Tunay, Ayşe İrem Bozkurt
Çukurova University, Faculty of Medicine, Department of Anesthesiology and Reanimation
Giriş: It has been reported that corrected carotid flow time (FTc) may indicate the responsiveness of spontaneously breathing patients to fluid therapy. The primary objective of the study is to determine the effect of fluid preload applied to patients with preanesthetic FTc values below the cut-off value on the incidence of hypotension in cesarean section (C/S) surgery.
Gereç ve Yöntem: Pregnant women who underwent cesarean section under spinal anesthesia were included in this prospective study. In the preoperative care unit, patients were assigned to two groups according to their baseline FTc values. Patients with baseline FTc(W)<327 ms were assigned to the first group, and Ringer Lactate (RL) preload fluid administration to these patients was continued until FTc(W)>327 ms. On the other hand, patients with baseline FTc(W) >327 ms were assigned to the second group, and preload fluid was not administered to these patients. Intraoperative hemodynamic data were recorded for each patient.
Bulgular: In the study including a total of 72 patients, the mean baseline FTc value was 298.16±16.36 ms in the preload group (n=36) and 336.52±5.65 ms in the non-preload group (n=36). The mean of 1069.44±319.66 mL of RL preload fluid was administered to patients with baseline FTc < 327 ms. The incidence of intraoperative hypotension was 8.3% (n=3) in the preload group and 13.6% (n=5) in the non-preload group. The incidence of hypotension was statistically similar in both groups and lower than expected (<20%).
Tartışma ve Sonuç: FTc-guided preload fluid administration in C/S surgeries reduces the incidence of spinal anesthesia-related hypotension.
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