Comparison of Hemodynamic Effects of Bupivacaine in Spinal Anesthesia (Nill)

May 26, 2026 updated by: Usama Bhurgri, Liaquat National Hospital & Medical College

Comparison of Hemodynamic Effects of Fractionated Dose Versus Bolus Dose of Hyperbaric Bupivacaine (0.5%) in Spinal Anesthesia for Lower Limb Surgery

To assess hemodynamic changes with hyperbaric bupivacaine with spinal anesthesia

Study Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Detailed Description

Assesment of hemodynamic changes like heart rate and blood pressure with hyperbaric bupivacaine in spinal anesthesia when given in fractionanted versus bolus dose manner

Study Type

Interventional

Enrollment (Estimated)

100

Phase

  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

  • Pakistan
    • Sindh
      • Karachi, Sindh, Pakistan, 74000
        • Liaquat National Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • ASA I and II
  • Adults 18 to 60 years of age of either gender
  • height from 160 to 182cm and BMI from 15 to 29.9kg/m2

Exclusion Criteria:

  • ASA III and IV
  • Refusal of consent
  • any known renal, hepatic, cardiac or cerebrovascular disease
  • hypersensitivity to local anaesthetics drug
  • spinal deformity or any contra indications to spinal anesthesia

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Group B (Bolus)
Group B patients will be given a bolus dose of hyperbaric bupivacaine in a bolus fashion mean all of calculated drug will be given in one shot
Drug: Spinal Anesthesia (bupivacaine)
In this group B spinal Anesthesia will be given in one single shot
Drug: Spinal Anesthesia (bupivacaine)
In this intervention spinal Anesthesia of bupivacaine will be given in a fractionated manner that is 2/3 of dose initially and then 1/3 after 90 seconds
Active Comparator: Group F (Fractionated)
In group F Spinal Anesthesia will be given as 2/3 of the initial dose will be give and then after 90 seconds remaining 1/3 dose will be given of hyperbaric bupivacaine.
Drug: Spinal Anesthesia (bupivacaine)
In this group B spinal Anesthesia will be given in one single shot
Drug: Spinal Anesthesia (bupivacaine)
In this intervention spinal Anesthesia of bupivacaine will be given in a fractionated manner that is 2/3 of dose initially and then 1/3 after 90 seconds

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Mean Arterial Pressure
Time Frame: Baseline and up to 120 minutes
Difference in mean arterial pressure between Group B and Group F
Baseline and up to 120 minutes

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Hypotension and bradycardia
Time Frame: Baseline and up to 120 minutes
Incidence of hypotension and bradycardia after spinal Anesthesia between Group B and Group F
Baseline and up to 120 minutes
Requirement of vasopressors
Time Frame: Baseline and up to 120 minutes
Requirements of vasopressors if mean arterial pressure falls below 60mmHg during the procedure and up to 120 minutes
Baseline and up to 120 minutes

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Liaquat National Hospital & Medical College

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

April 1, 2027

Primary Completion (Estimated)

September 1, 2027

Study Completion (Estimated)

October 1, 2027

Study Registration Dates

First Submitted

May 15, 2026

First Submitted That Met QC Criteria

May 26, 2026

First Posted (Actual)

June 1, 2026

Study Record Updates

Last Update Posted (Actual)

June 1, 2026

Last Update Submitted That Met QC Criteria

May 26, 2026

Last Verified

May 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 1369-2026-LNH-ERC

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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