Cardiac output index: Difference between revisions
From IDWiki
(Imported from text file) |
mNo edit summary |
||
| Line 16: | Line 16: | ||
** Uses spirometry and VO2 measurements |
** Uses spirometry and VO2 measurements |
||
** VO2 / (k x Hgb x (arterial O2 sat - PA sat) |
** VO2 / (k x Hgb x (arterial O2 sat - PA sat) |
||
| ⚫ | |||
[[Category:Cardiology]] |
[[Category:Cardiology]] |
||
[[Category:Critical care]] |
[[Category:Critical care]] |
||
| ⚫ | |||
Latest revision as of 17:10, 19 September 2024
Definition
- Cardiac output is the volume of blood pumped by the heart per minute
- CO = Heart Rate x Stroke Volume
- CI = CO / body surface area
Methods
- Echocardiography with Dopplers
- Thermodilution (historical)
- 10cc room temperature saline injected into proximal pot
- Thermistor at tip measures temperature change over time
- Repeat 3 times within 10% of each other
- Unreliable with ASV/VSD/PFO or TR
- Fick equation (historical)
- Uses spirometry and VO2 measurements
- VO2 / (k x Hgb x (arterial O2 sat - PA sat)
