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(SVR) Measures Systemic Resistance and Reflects Afterload of Left Ventricle Average Perfusion of A Cardiac Cycle

This document defines and provides normal ranges for several key hemodynamic measurements: - Mean arterial pressure measures average perfusion and is normally 70-100 mmHg. Systemic vascular resistance measures systemic resistance and left ventricular afterload, normally 800-1200 dynes. Pulmonary artery wedge pressure measures left ventricular preload and is normally 8-12 mmHg. - Central venous pressure measures right atrial and ventricular preload and is normally 3-8 mmHg. Pulmonary vascular resistance measures right ventricular afterload and is normally <250 dynes. - Other measurements defined include pulmonary artery pressure, stroke volume, cardiac output, and their normal ranges. The document also lists factors that can cause increases or decreases in

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2K views1 page

(SVR) Measures Systemic Resistance and Reflects Afterload of Left Ventricle Average Perfusion of A Cardiac Cycle

This document defines and provides normal ranges for several key hemodynamic measurements: - Mean arterial pressure measures average perfusion and is normally 70-100 mmHg. Systemic vascular resistance measures systemic resistance and left ventricular afterload, normally 800-1200 dynes. Pulmonary artery wedge pressure measures left ventricular preload and is normally 8-12 mmHg. - Central venous pressure measures right atrial and ventricular preload and is normally 3-8 mmHg. Pulmonary vascular resistance measures right ventricular afterload and is normally <250 dynes. - Other measurements defined include pulmonary artery pressure, stroke volume, cardiac output, and their normal ranges. The document also lists factors that can cause increases or decreases in

Uploaded by

sarah_stover_1
Copyright
© Attribution Non-Commercial (BY-NC)
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOCX, PDF, TXT or read online on Scribd
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Mean Arterial Pressure 70-100 mmHg Average perfusion of a cardiac cycle

Systemic Vascular Resistance 800-1200 dynes (SVR) Measures systemic resistance and reflects afterload of Left Ventricle

Pulmonary Artery Wedge Pressure 8-12 mm Hg (PAWP, PWP) Measures preload of LA &LV, and reflects Left Ventricle End Diastolic Volume

Central Venous Pressure 3-8 mm Hg (CVP, RAP) Measures preload of RA & RV

Pulmonary Vascular Resistance- (PVR) <250 dynes. Measures afterload of RV and reflects lungs resistance
Pulmonary Artery Pressure Systolic (PAP) = 25 systolic and 10 diastolic (Quarter over Dime) Systolic= amount of pressure needed to open Pulmonic Valve and should = RVP when pulmonary valve open. Diastolic = resistance of pulmonary vascular beds when pulmonary valves are closed

Stroke Volume- 60-100 ml/beat. Ejection Fraction- 55-65% Cardiac Output- 4-6L/minute Cardiac Index- 2.5-4. Cardiac output in relation to body mass

Pressure CVP

Increase RHF, overload, Hypertension, cardiac tamponade, RV infarction Hypoxemia, Chronic HF, AV Septal Defects, Pericarditic, Pulmonary Disease, Mitral Stenosis Hypovolemia, hypothermia, vasoconstriction

Decrease Vasodilation, Hypovolemia

RVP

Vasodilation, Hypovolemia

SVR

Shock, vasodilation, vasodilator meds

PAWP

LV function decline, cardiac tamponade, Mitral valve stenosis


Pulmonary Hypertension LHF, increase in pulmonary blood flow, pulmonary Hypertension, hypovolemia, hypoxia, mitral valve Stenosis hypervolemia, inotrope meds

Hypovolemia

PVR PAP

Hypovolemia, vasodilation

SV

Hypovolemia, arrhythmias, decreased contractility, increased afterload

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