Using Dexmedetomidine and Fentanyl to Prevent Shivering After Hip Surgery

A Comparative Study Between Dexmedetomidine and Fentanyl As Adjuvants to Hyperbaric Bupivacaine for the Prevention of Post-spinal Shivering in Hip Arthroplasty Surgeries

NA · Ain Shams University · NCT06834841

This study is testing whether adding dexmedetomidine or fentanyl to a common pain medication can help prevent shivering after hip surgery.

Quick facts

PhaseNA
Study typeInterventional
Enrollment100 (estimated)
Ages21 Years and up
SexAll
SponsorAin Shams University (other)
Locations1 site (Cairo)
Trial IDNCT06834841 on ClinicalTrials.gov

What this trial studies

This study aims to compare the effectiveness of intrathecal dexmedetomidine versus intrathecal fentanyl when added to hyperbaric bupivacaine for preventing post-spinal shivering in patients undergoing hip arthroplasty. Patients will be randomly assigned to one of two groups, receiving either dexmedetomidine or fentanyl, and will be monitored for sedation levels and the intensity of the spinal block. Preoperative assessments will include routine medical evaluations and informed consent. Intraoperative monitoring will ensure patient safety and efficacy of the interventions.

Who should consider this trial

Good fit: Ideal candidates are ASA I, II, or III patients over 20 years old scheduled for hip arthroplasty under spinal anaesthesia.

Not a fit: Patients with contraindications for spinal anaesthesia, known neurologic or psychiatric illnesses, or those under 150 cm in height may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could significantly reduce post-spinal shivering, improving patient comfort and recovery after hip arthroplasty.

How similar studies have performed: Other studies have shown promising results with similar approaches in managing post-operative complications, suggesting potential for success in this trial.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* ASA I, ASA II or ASA III patients scheduled for hip arthroplasty surgeries under spinal anaesthesia.

Age \> 20 years.

Exclusion Criteria:

* Patient refusal

  * Patients with known neurologic and psychiatric illness.
  * Contraindications for spinal anaesthesia as bleeding or coagulation test abnormalities, local skin infection at spinal lumbar region, raised intracranial pressure and hypovolemia.
  * Height \<150 cm.
  * Systemic disorders like hematological, respiratory, cardiac, renal or hepatic insufficiency.
  * Allergy to any of the drugs used in the study.

Where this trial is running

Cairo

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Post Spinal Shivering

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.