The Effect of Low-dose Atropine on Sympathetic Blockade in Spinal Cesarean Section Patients

it will planned to administer 0.4 mg/4mL diluted atropine in 20 seconds(10mcg/kg), as a slow bolus as bradycardia would expected (10% reduction in peak heart rate after spinal anesthesia)

For sympathetic blockade (SBP\<90) developed in patients in the ephedrine group, a bolus dose of 5 mg/mL ephedrine was used and repeated if necessary.