Normal SVV values are less than 10-15% on controlled mechanical ventilation. The figures below demonstrate using SVV as a guide for volume resuscitation with a goal SVV of <13%. SVV increased to 19% with a stroke volume (SV) of 43 ml/beat, blood and saline were given to obtain a SVV of 6% and a SV of 58 ml/beat.
Similarly, what is the normal cardiac index?
Cardiac index (CI) is a haemodynamic parameter that relates the cardiac output (CO) from left ventricle in one minute to body surface area (BSA), thus relating heart performance to the size of the individual. The unit of measurement is litres per minute per square metre (L/min/m2).
What is normal cardiac output and cardiac index?
Normal Hemodynamic Parameters
|Cardiac Output (CO)||HR x SV/1000||4.0 – 8.0 l/min|
|Cardiac Index (CI)||CO/BSA||2.5 – 4.0 l/min/m2|
|Stroke Volume (SV)||CO/HR x 1000||60 – 100 ml/beat|
|Stroke Volume Index (SVI)||CI/HR x 1000||33 – 47 ml/m2/beat|
What is a good cardiac output?
The amount of blood put out by the left ventricle of the heart in one contraction is called the stroke volume. The stroke volume and the heart rate determine the cardiac output. A normal adult has a cardiac output of 4.7 liters (5 quarts) of blood per minute.