Jinsi ya kukokotoa Cardiac Output
Cardiac Output ni nini?
Cardiac output is the volume of blood pumped per minute. It's calculated from heart rate and stroke volume, crucial for shock assessment.
Fomula
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
Mwongozo wa Hatua kwa Hatua
- 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
Mifano Iliyotatuliwa
Ingizo
HR 100, SV 50 mL
Matokeo
CO = 5 L/min (normal)
Normal cardiac output
Makosa ya Kawaida ya Kuepuka
- ✕Confusing cardiac output with blood pressure
- ✕Using SV values from different populations without BSA normalization
Maswali yanayoulizwa mara kwa mara
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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