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Contents

   



(Top)
 


1 Calculation  





2 Clinical significance  





3 References  














Cardiac index






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From Wikipedia, the free encyclopedia
 


Cardiac index (CI) is a haemodynamic parameter that relates the cardiac output (CO) from left ventricle in one minute to body surface area (BSA),[1] thus relating heart performance to the size of the individual. The unit of measurement is litres per minute per square metre (L/min/m2).

Calculation

[edit]

The index is usually calculated using the following formula:[citation needed]

where

CI
Cardiac index
BSA
Body surface area
SV
Stroke volume
HR
Heart rate
CO
Cardiac output

Clinical significance

[edit]

The normal range of cardiac index at rest is 2.6–4.2 L/min/m2.

The cardiac index is frequently measured and used in both intensive care medicine and cardiac intensive care. The CI is a useful marker of how well the heart is functioning as a pump by directly correlating the volume of blood pumped by the heart with an individual's body surface area.[citation needed]

If the CI falls acutely below 2.2 L/min/m2, the patient may be in cardiogenic shock.[citation needed]

References

[edit]
  1. ^ "Cardiac Catheterization: Cardiovascular Tests and Procedures: Merck Manual Professional". Retrieved 2009-03-06.

Retrieved from "https://en.wikipedia.org/w/index.php?title=Cardiac_index&oldid=1210262712"

Categories: 
Cardiovascular physiology
Diagnostic intensive care medicine
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This page was last edited on 25 February 2024, at 19:47 (UTC).

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