Kuinka laskea Cardiac Output
Mikä on 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.
Kaava
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
Vaiheittainen opas
- 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
Ratkaistut esimerkit
Syöte
HR 100, SV 50 mL
Tulos
CO = 5 L/min (normal)
Normal cardiac output
Yleisiä virheitä vältettäväksi
- ✕Confusing cardiac output with blood pressure
- ✕Using SV values from different populations without BSA normalization
Usein kysytyt kysymykset
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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