Ketamine for Preventing Post-Spinal Hypotension in Orthopedic Surgery
Impact of Sub-anesthetic Dose of Ketamine in the Prevention of Post Spinal Hypotension in Patients Undergoing Orthopedic Surgeries
Ain Shams University
30 participants
Jun 1, 2025
INTERVENTIONAL
Conditions
Summary
This randomized, double-blind, controlled clinical trial investigates the efficacy of a sub-anesthetic dose of ketamine (0.5 mg/kg IV) in preventing post-spinal hypotension in patients undergoing elective orthopedic surgeries under spinal anesthesia. The study compares ketamine with placebo (normal saline) in terms of blood pressure stability and incidence of hypotensive episodes following spinal anesthesia.
Eligibility
Inclusion Criteria5
- Patients American Society of Anesthesiologists Physical Status (ASA) I to II undergoing orthopedic surgeries under spinal anesthesia.
- Both Sexes.
- Patients aged equal to or above 18 years.
- Body mass index \<35 kg/m2
- Duration of operation from 1 hour to 3 hours
Exclusion Criteria6
- Patients' refusal of procedure or participation in the study.
- Patients with contraindication to spinal anesthesia.
- Patients with cardiovascular or pulmonary disease.
- Patients with pre-procedural hypotension (systolic arterial pressure less than 90 mmHg and/or mean arterial pressure less than 60 mmHg).
- Patients aged below 18 years.
- Duration of operation below 1 hour or above 3 hours.
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Interventions
Patients receive crystalloid preloading of 15ml/kg (Ringer's lactate) +the sub-anesthetic dose of ketamine of 0.5 mg/kg IV added to the first bottle of ringer for blinding over 20 min before the spinal injection.
Patients receive a crystalloid preloading of 15 ml/kg (Ringer's lactate)+ 0.5 mg/kg IV of Normal Saline added to the first bottle of ringer for blinding, over 20 min before the spinal injection.
Locations(1)
View Full Details on ClinicalTrials.gov
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NCT06995690