Accuracy of the CNAP™ Monitor (Continuous Non-invasive Arterial Pressure) Versus Invasive Radial Arterial Monitoring in Surgical Patients
Overview
- Phase
- Not Applicable
- Intervention
- Not specified
- Conditions
- Blood Pressure
- Sponsor
- University Hospital Schleswig-Holstein
- Enrollment
- 195
- Locations
- 1
- Primary Endpoint
- Bias and percentage error of CNAP compared with invasive arterial pressure measurement
- Status
- Completed
- Last Updated
- 14 years ago
Overview
Brief Summary
The purpose of this study was to compare the Continuous Non-invasive Arterial Pressure (CNAP) monitor with the gold standard of invasive arterial pressure monitoring during:
- induction and maintenance of general anaesthesia
- intensive care unit treatment of postoperative patients with an ASA 3 or 4 status
Detailed Description
The CNAP monitor continuously measures blood pressure using a finger cuff. It showed a good agreement to invasive blood pressure measurements during anaesthesia induction and maintenance during surgery. In critical ill patients cardiac arrhythmia is probably a confounding factor affecting accuracy and interchangeability of CNAP. As systolic arterial CNAP pressure in comparison to mean pressure shows no statistical interchangeability with invasive measurements, mean pressure should be considered when making therapy decisions. A problem is the missing standard criterion for comparison of continuously devices with invasive pressure.
Investigators
Robert Hanss
Prof. Dr. Robert Hanss
University Hospital Schleswig-Holstein
Eligibility Criteria
Inclusion Criteria
- •BMI \< 35 kg.m²
- •Patients capable of giving informed consent
- •patients undergoing elective surgical procedures in supine position under general anesthesia
- •perfusion of the examined arm evidenced by a positive Allen's test
Exclusion Criteria
- •Patients not competent or unwilling to provide informed consent
- •Patients with history of neurological, neuromuscular seizure
- •Patients where IBP cannula, CNAP™ finger-cuff and CNAP™ upper arm cuff cannot be placed on the same arm
Outcomes
Primary Outcomes
Bias and percentage error of CNAP compared with invasive arterial pressure measurement
Time Frame: 1.) Induction of general anaesthesia. 2.) Maintanance of general anaesthesia. 3.) Intensive Care Treatement after surgery