Jak vypočítat Cardiac Output
Co je Cardiac Output?
Cardiac output is the volume of blood pumped per minute. It's calculated from heart rate and stroke volume, crucial for shock assessment.
Vzorec
Calculate: CO = HR × SV (in mL)
- CO
- CO/BSA — CO/BSA
- HR
- HR value — Variable used in the calculation
- SV
- SV value — Variable used in the calculation
Průvodce krok za krokem
- 1Calculate: CO = HR × SV (in mL)
- 2Normal CO ≈ 5 L/min; normalize to body surface area: CI = CO/BSA
- 3Normal CI ≈ 2.5-3.5 L/min/m²
Worked Examples
Vstup
HR 100, SV 50 mL
Výsledek
CO = 5 L/min (normal)
Normal cardiac output
Common Mistakes to Avoid
- ✕Confusing cardiac output with blood pressure
- ✕Using SV values from different populations without BSA normalization
Frequently Asked Questions
What decreases cardiac output?
Decreased heart rate, decreased stroke volume (due to reduced preload, afterload, or contractility).
How is stroke volume measured?
Echocardiography, cardiac catheterization, or non-invasive methods. Not directly measured from vital signs.
Jste připraveni počítat? Vyzkoušejte bezplatnou kalkulačku Cardiac Output
Zkuste to sami →