Comparison of Two Different Norepinephrine Bolus Doses for Management of Spinal Anesthesia-Induced Maternal Hypotension

Inclusion Criteria: * Woman, * ASA I-II, * 18-49 age range, * Actual body weight \>50 kg,\<90 kg * Actual height \>150cm, \<180cm * Patients undergoing surgery under elective conditions and emergency cases for non-bleeding reasons * Fasting period is appropriate, * Term pregnancy (38-42 weeks), * Patients without cardiovascular disease * Spinal block that does not reach the high level (\<T4), * Patients without diagnosis of stage 2 or higher hypertension hypertension (Stage 2 hypertension is defined as a systolic blood pressure of more than 160 mmHg and a diastolic blood pressure of more than 90 mmHg.), * Patients without vasoactive drug use, * Preop Systolic Blood Pressure \>90 mmHg, * Bleeding less than 750 ml, * Patients who signed the informed consent form to be included in the study Exclusion Criteria: * ASA III-IV, * Pregnant women outside the age range of 18-49, * Actual body weight \>90kg, \<50kg * Actual height \>180cm, \<150cm * Patients with inappropriate fasting time * Preterm pregnancy (\<38 weeks) or postterm pregnancy (\>42 weeks) * Bleeding amount more than 750 ml * Emergency surgery with bleeding (previa, placental abruption, etc.)- Pregnant with cardiovascular system disease, * High block level (\>T4) * Having a diagnosis of stage 2 or higher hypertension hypertension (Stage 2 hypertension is defined as a systolic blood pressure of more than 160 mmHg and a diastolic blood pressure of more than 90 mmHg.), * Use of vasoactive drugs, * Preop Systolic Blood P…