So berechnen Sie Cardiac Output
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Cardiac output is the volume of blood pumped per minute. It's calculated from heart rate and stroke volume, crucial for shock assessment.
Formel
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
Schritt-für-Schritt-Anleitung
- 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
Gelöste Beispiele
Eingabe
HR 100, SV 50 mL
Ergebnis
CO = 5 L/min (normal)
Normal cardiac output
Häufige Fehler vermeiden
- ✕Confusing cardiac output with blood pressure
- ✕Using SV values from different populations without BSA normalization
Häufig gestellte Fragen
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.
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