Normal SVR is 800-1200 dynes·sec/cm⁵. Septic shock causes low SVR ( 1600).

What medications reduce SVR?

Vasodilators like nitroprusside, nitroglycerin, ACE inhibitors, ARBs, and calcium channel blockers reduce SVR.

How does SVR relate to blood pressure?

BP = CO × SVR / 80. Hypertension results from increased SVR, increased CO, or both.

Calculate SVR = (MAP - CVP) × 80 / CO — the resistance the heart must overcome to pump blood.

Use the full interactive calculator below, or

MAP Calculator

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Cardiac Output

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PVR Calculator

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Stroke Volume

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