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Minimal Inflation Tourniquet Pressure Using Induced Hypotension

NCT04055779 · Status: UNKNOWN · Type: OBSERVATIONAL · Enrollment: 20

Last updated 2019-08-14

No results posted yet for this study

Summary

Limb occlusion pressure (LOP) and arterial occlusion pressure (AOP) are the terms that mean the lowest tourniquet pressure required to stop the arterial blood flow into the limb distal to the cuff. LOP can be determined manually or automatically by slow cuff inflation until disapper of pulsation with Doppler flow-meter or pulse oximeter

Conditions

  • Vascular Diseases

Interventions

OTHER

estimation method for arterial occlusion pressure

The patients will receive induced hypotensive anaesthesia and the tourniquet pressure will be based on the AOP.the tourniquet pressure will be determined based on the AOP which will be determined by the estimation formula (AOP=\[SBP+10\]/KTP) . The calculation is based on using initial SBP and tissue padding coefficient values , according to limb circumferences of the patient.After calculation of AOP, tourniquet pressures will be determined by adding a safety margin of 20 mmHg to AOP values(tourniquet pressure=AOP+20 mmHg).

OTHER

the limb occlusion pressure

: using the ultrasound Doppler technique and the tourniquet will be inflated until the arterial pulsations disappear at the side of the operation. This pressure will be recorded as LOP.using the ultrasound Doppler technique and the tourniquet will be inflated until the arterial pulsations disappear at the side of the operation. This pressure will be recorded as LOP .the tourniquet cuff will be inflated to the pressure according to theguidelines of the Association of Perioperative Registered Nurses(AORN) which recommends that a safety margin of 40 mmHg should be added for AOP below 130 mmHg, 60 mmHg for AOP between 131 mmHg and 190 mmHg, and 80 mmHg for AOP above 190 mmHg for adult patients

Sponsors & Collaborators

  • Beni-Suef University

    lead OTHER

Principal Investigators

  • Samaa ak Rashwan, MD · Assisstant proffesor of anesthesia

Eligibility

Min Age
20 Years
Max Age
50 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2019-08-01
Primary Completion
2019-11-30
Completion
2019-11-30

Countries

  • Egypt

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04055779 on ClinicalTrials.gov