Evaluation of Perfusion Index as a Prognostication Tool for High Quality Cardiopulmonary Resuscitation

Phase

N/A

Condition

Heart Attack (Myocardial Infarction)

Heart Failure

Circulation Disorders

Treatment

N/A

Clinical Study ID

NCT06067464

28-2023

Ages 18-75
All Genders

Study Summary

In order to monitor and improve cardiopulmonary resuscitation(CPR) quality, there is need for tools that provide real time feedback to responders. The use of invasive arterial pressure monitoring and end tidal carbon dioxide (ETCO2) as quality measures of CPR. Invasive pressure measurements are timeconsuming and cumbersome in resuscitation situations, and are very rarely practical. ETCO2 measurements require presence of a capnometer with an advanced airway.

High quality chest compression will result inETCO2 between 2-2.5KPa. A rapid increase in ETCO2 on waveform capnography may enable ROSC to be detected while continuing chest compression and can be used as a tool to withhold the next dose of bolus adrenaline injection.

Pulse oximetry, which noninvasively detects the blood flow of peripheral tissue, has achieved widespread clinical use. It was noticed that the pulse waveform frequency can reflect the rate and interruption time of chest compression(CC) during cardiopulmonary resuscitation(CPR).

The perfusion index (PI) is obtained from pulse oximetry and is computed as the ratio of the pulsatile (alternating current) signal to the non-pulsatile (direct current) signal of infra-red light, expressed as a percentage;PI =ACIR/DCIR∗100% (i.e. AC = pulsatile component of the signal, DC = non-pulsatile component of the signal, IR = infrared light).

PI shows the perfusion status of the tissue in the applied area for an instant and a certain time interval. The PI value ranges from 0.02% (very weak) to 20% (strong).Peripheral PI has been proposed for different clinical uses with some applications in critical patients.

The purpose of this study is to evaluate the role of pulse-oximeter derived perfusion index for high quality CPR and as aprognostication tool of ROSC during in-hospital cardiac arrest in comparison to ETCO2 reading.

Eligibility Criteria

Inclusion

Inclusion Criteria:

The subjects are adults aged between 18 & 75years who developed in-hospital cardiacarrest and cardiopulmonary resuscitation for at least 3 minutes either in emergencydepartments or wards or Intensive care units in the National Hepatology and TropicalMedicine Research Institute (NHTMRI) and Alexandria University

Exclusion

Exclusion Criteria:

Patients will be excluded from the study ifpregnant,known peripheral vascular diseaseor >2 vasopressors with the maximum doses or in the presence of nail polish asreadings from pulse oximeter will be distorted .

Study Design

August 23, 2023

January 31, 2025

Study Description

After approval by NHTMRI-IRB Ethical Committee.All demographic data will be obtained including the patients' age, sex, associated co-morbidities (e.g. diabetes mellitus & hypertension), cause of cardiac arrest, and duration of CPR.

Resuscitation for patients will be held according to ERC (Advanced life support) ALS Algorithm 2021.1 Electrocardiogram of manual defibrillator, pulse oximeter (Nihon-Kohden, Mindray) will be attached to the middle finger or thumb7 and the capnography will be attached between endotracheal tube and Bag mask valve. Both readings of the ETCO2 and pulse oximeter derived perfusion index will be recorded every minute till the end of CPR.The medical staff did not alter the patient's treatment based on PI results. One week and 30 day survival will be followed.

Connect with a study center

NHTMRI
Cairo, 4260010
Egypt
Active - Recruiting

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