Hemodynamics

Stroke Volume (SV) Calculator

Blood ejected per beat, worked back from cardiac output and heart rate; shows whether low output is a pump problem or a rate problem.

Reviewed by Alex G, BSN, RN, CEN, CCRN, CMC, NREMT-P · From the Reference tab of the app

Turn on JavaScript to use this calculator, or open it in the web app.

Formula

(CO * 1000) / HR

Reference: Normal 60–100

How it is used

• Normal Stroke Volume is 60–100 mL/beat.

SV is determined by three main factors

• 1. Preload (Volume status / filling)
• 2. Contractility (Pump function)
• 3. Afterload (Systemic vascular resistance)

• If SV is low, optimize volume status first, then consider inotropic support or afterload reduction.

Same formula as the app. Open it in the web app.

Related one-pagers

• Hemodynamic NormalsSV · 60–100 · mL/beat
• Shock Types at a GlanceSVR · 1,490 · 1,370 · 500 · 1,230 · 1,200
• Cardiorespiratory Look-Alikes and Special PatientsSVC syndrome · Cancer or central line; face and arm swelling, fixed neck veins, worse lying flat · Head up, oxygen; watch for stridor
• Vasopressors and InotropesSVR and BP · Mild fall · Larger fall

Related calculators

• Cardiac Index (CI)
• Cardiac Output (Fick Principle)
• Cerebral Perfusion Pressure (CPP)
• Mean Arterial Pressure (MAP)
• Oxygen Delivery (DO₂)
• Pulmonary Vascular Resistance (PVR)
• QTc (Bazett)
• Shock Index

For education and exam preparation only. Follow your institution’s protocols. For education and exam preparation only. Verify results independently and follow your local protocols and medical direction. Not a substitute for clinical judgment.