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Published on: June 28, 2024
Newer methods of cardiac output monitoring
1Yatin Mehta, Dheeraj Arora, Institute of Critical Care and Anesthesiology, Medanta The Medicity, Haryana 122001, India.
Insights
This review explores newer, minimally invasive methods for monitoring cardiac output (CO), offering continuous, cost-effective, and reliable readings. These advanced techniques provide crucial data for tissue perfusion and oxygen delivery, validated against the gold standard.
Area of Science:
- Cardiology
- Physiology
- Medical Devices
Background:
- Cardiac output (CO) is vital for assessing tissue perfusion and oxygen delivery.
- Traditional thermodilution methods using pulmonary artery catheters (PAC) are invasive and associated with complications.
- There is a need for safer, more reliable methods to measure cardiac output.
Purpose of the Study:
- To review and discuss newer, minimally or non-invasive methods for cardiac output monitoring.
- To evaluate the effectiveness and clinical utility of these advanced monitoring techniques.
- To compare newer methods against the established gold standard (PAC thermodilution).
Main Methods:
- Literature review of studies on novel cardiac output monitoring technologies.
- Analysis of validation data comparing new methods against pulmonary artery catheter thermodilution.
- Assessment of key performance characteristics: continuous readings, reproducibility, cost-effectiveness, reliability, and response time.
Main Results:
- Newer methods offer continuous and reproducible cardiac output measurements.
- These minimally or non-invasive techniques are often more cost-effective and reliable.
- Validation studies show good agreement between newer methods and the PAC gold standard.
Conclusions:
- Minimally or non-invasive cardiac output monitoring methods represent significant advancements.
- These newer technologies enhance patient safety and provide valuable clinical data.
- Further adoption of these methods can improve the management of cardiovascular conditions.
Abstract:
Cardiac output (CO) is the volume of blood ejected by each ventricle per minute and is the product of stroke volume and heart rate. CO can thus be manipulated by alteration in heart rate or rhythm, preload, contractility and afterload. Moreover it gives important information about tissue perfusion and oxygen delivery. CO can be measured by various methods and thermodilution method using pulmonary artery catheter (PAC) is till date considered as gold standard method. Complications associated with PAC led to development of newer methods which are minimally or non-invasive. Newer methods fulfil other properties like continuous and reproducible reading, cost effective, reliable during various physiological states and have fast response time. These methods are validated against the gold standard with good level agreement. In this review we have discussed various newer methods of CO monitoring and their effectiveness in clinical use.
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