Ankle/Brachial Non-Invasive Blood Pressure Difference During General Anesthesia: a Prospective Cohort Observational Study in Young Healthy Patients
Trial Snapshot
- Phase
- Not Applicable
- Status
- Completed
- Sponsor
- Enrollment
- 25
- Locations
- 1
- Primary Endpoint
- Ankle Brachial non-invasive blood pressure difference - time point 5
Study Overview
Brief Summary
Brachial non-invasive blood pressure (NIBP) monitoring is recommended as part of the American Society of Anesthesiology (ASA) basic monitoring package. Although brachial NIBP is often practical, some surgeries and patients may require NIBP measurement elsewhere (e.g. the ankle).
Several studies have shown that ankle NIBP overestimates brachial NIBP measurements. Algorithms have been proposed, based on correlation studies, to estimate brachial NIBP from ankle NIBP during general anesthesia and mechanical ventilation. These algorithms, however, are based on both heterogeneous populations and surgeries.
Our aim was to determine if ankle brachial NIBP difference occurs in in young ASA physical status 1 patients undergoing general anesthesia in the supine position. We also aim to determine if this difference is constant during anesthesia or if it varies according to different predefined time points.
Study Design
- Study Type
- Observational
- Observational Model
- Cohort
- Time Perspective
- Prospective
Eligibility Criteria
- Ages
- 15 Years to 40 Years (Child, Adult)
- Sex
- All
- Accepts Healthy Volunteers
- No
Inclusion Criteria
- •American Society of Anesthesiology (ASA) pysical status score 1
- •Patient undergoing elective surgery requiring general anesthesia in supine position
Exclusion Criteria
- •Patient refusal
- •systemic pathology
- •Body mass index (BMI) superior to 30
- •Surgeon requiring a position other than supine
Outcomes
Primary Outcomes
Ankle Brachial non-invasive blood pressure difference - time point 5
Time Frame: 1 day
Difference between the non-invasive blood pressure measured at the ankle and at the arm, 10 minutes after surgical incision
Ankle Brachial non-invasive blood pressure difference - time point 1
Time Frame: 1 day
Difference between the non-invasive blood pressure measured at the ankle and at the arm, before induction of anesthesia
Ankle Brachial non-invasive blood pressure difference - time point 2
Time Frame: 1 day
Difference between the non-invasive blood pressure measured at the ankle and at the arm, after induction of anesthesia
Ankle Brachial non-invasive blood pressure difference - time point 3
Time Frame: 1 day
Difference between the non-invasive blood pressure measured at the ankle and at the arm, after securing airway
Ankle Brachial non-invasive blood pressure difference - time point 6
Time Frame: 1 day
Difference between the non-invasive blood pressure measured at the ankle and at the arm, at reversal of anesthesia
Ankle Brachial non-invasive blood pressure difference - time point 4
Time Frame: 1 day
Difference between the non-invasive blood pressure measured at the ankle and at the arm, at surgical incision
Secondary Outcomes
- Pain at the arm (yes/no)(1 day)
- Pain at the ankle (yes/no)(1 day)
- Ankle Brachial NIBP difference variation(1 day)
Investigators
Philippe VAN DER LINDEN
Professor
Brugmann University Hospital