To compare two infusion rates of norepinephrine for prophylaxis against post-spinal hypotension during caesarean delivery.
Hypotension after spinal anesthesia for cesarean delivery is common and is caused mainly by peripheral vasodilatation. Although the intravenous administration of fluids helps, it does not always prevent maternal hypotension. Usually, this hypotension is treated with phenylephrine or ephedrine. Norepinephrine has been recently introduced for prophylaxis against post-spinal hypotension during cesarean delivery due to its α-adrenergic activity in addition to the weak β-adrenergic activity. Although the use of norepinephrine for this purpose has shown promising results. However, no sufficient data are available with regard to its optimum dose. The objective of this study is to compare two infusion rates of norepinephrine for prophylaxis against post-spinal hypotension during caesarean delivery.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
100
An intravenous bolus dose of norepinephrine (5 µg) followed by infusion of 0.1 µg/kg/min till 5 minutes after delivery of the fetus.
An intravenous bolus dose of norepinephrine (5 µg) followed by infusion of 0.075 µg/kg/min till 5 minutes after delivery of the fetus.
Assiut University Woman Health Hospital
Asyut, Egypt
RECRUITINGThe frequency of post-spinal hypotension
Time frame: During the first hour after the subarachnoid block
Arterial blood pressure (Systolic, diastolic, and mean)
Time frame: During the first hour after the subarachnoid block
Heart rate
Time frame: During the first hour after the subarachnoid block
Doses of atropine and ephedrine
Time frame: Intraoperative
Appearance, Pulse, Grimace, Activity, Respiration (APGAR) score
Ranges from 0 (the worst score) to 10 (the best score)
Time frame: 1, 5, and 10 minutes after delivery
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