The Effect of Injection Rate of Local Anesthetic in Caesarean Section

Does the Injection Rate of Local Anesthetic Affect the Onset of Sensory Block and Incidence of Hypotension in Caesarean Section

This randomized double-blind study aimed to compare the effects of two different subaracnoid lokal anesthetic injection rate in cesarean section. Totally 67 patients were included. The groups were compared in terms of maximum sensory and motor block level, time to reach T6 level, hemodynamic changes and nausea- vomiting saved.

A total of 67 patients 18-40 years undergoing cesarean, who were graded as American Society of Anesthesiologists physical status were randomly allocated into two groups, 120-sn injection time (n=34, Group F), 15-sn injection time (n=33, Group S). When the level of the sensory block achieve the T6 level the surgery was let to begin. The groups were compared in terms of hemodynamic values, use of efedrin, the time to achieve sensory block to the T6 level, maximum sensory block level and motor block level.

Inclusion Criteria:

• Anesthesiologists risk score (ASA) I-II risk status
• Singleton pregnancy aged
• Between 18-40 years

Exclusion Criteria:

• Pregnant women with contraindications for spinal anesthesia;
• Placental anomaly;
• Hypertension
• Cardiac disease
• Vascular disease
• Hepatic disease
• Renal disease
• Hemodynamic instability
• Spinal deformity;
• Severe mental retardation
• Weight < 50 kg or >110 kg; height < 140 cm or > 180 cm
• Metabolic and Acid-base balance disorders
• Emergency patients