A patient with hemodynamic monitoring has a blood pressure of 94/68 mm Hg,HR of 130 beats/min,CO₂ of 4.8 L/min,and mixed venous oxygen saturation (SvO₂)of 64%.In analyzing the patient's hemodynamic measurements,the nurse calculates his SV at which of the following findings?

Question

Quizplus · Accepted Answer

Stroke Volume (SV) is the amount of blood ejected by the left ventricle in one cardiac cycle. To calculate SV using the CO (Cardiac Output) formula (CO = SV × HR), we need to know the patient's HR and CO.

CO = 4.8 L/min (given)
HR = 130 beats/min (given)

CO = SV × HR
4.8 L/min = SV × 130 beats/min
SV = 4.8 L/min ÷ 130 beats/min
SV ≈ 0.037 L/beat or 37 mL/beat (rounded to the nearest milliliter)

Therefore, the answer is B (37 mL/beat).

A Patient with Hemodynamic Monitoring Has a Blood Pressure of 94/68