Hemodynamics Part 2

Hemodynamics Part 2


Watch Hemodynamics Part 1 before watching this video CVP=Central Venous Pressure 2-6 mmHg (go by what your program uses as the normal values) CVP=Right Atrial Pressure CVP can be measured using the distal port of a central venous catheter CVP=Right Atrial Pressure=Preload Volume affects CVP readings CVP helps guide fluid volume replacement Cardiac output ranges from 4-8 L/min normally. It is the amount of blood in liters that is pumped out from the heart each minute. Cardiac output is affected by stroke volume, heart rate, and contractility Decreased contractility decreases cardiac output Cardiac index Cardiac index is cardiac output that accounts for the patients body surface area Cardiac index normally ranges from 2.5-4 L/min Cardiogenic shock is a cardiac index less than 2.1 L/min and hypotension Systemic Vascular Resistance=800-1200 Vessel diameter affects SVR Small, vasoconstricted blood are better at propelling blood forward Large, vasodilated vessels are more “floppy” and will not propel blood forward effectively Vasoconstriction increases SVR which increases tissue perfusion Vasodilation decreases SVR and decreases tissue perfusion In cardiogenic shock, cardiac output is decreased. In response, the vessels vasoconstrict in order to increase SVR and maintain tissue perfusion Pulmonary Capillary Wedge Pressure (PCWP) Sometimes called Pulmonary Artery Occlusion Pressure (PAOP) Normal range is 4-8 mmHg Wedge pressure is a direct reflection of pressures in the left atrium When the balloon is inflated, the transducer traces pressures from the LEFT side of the heart Over-inflation of the balloon could RUPTURE the PULMONARY ARTERY Makes for a bad day Mitral valve stenosis will increase wedge pressure Damage to the left side of the heart with increased fluid build-up will increase wedge pressure Thedrnurse.com Thanks for watching! SUBSCRIBE! Free things are going out just about every week to everybody that’s on the mailing list. So go ahead You don’t want to miss out on that And again, thanks so much for watching and I hope you have learned something from watching this video

2 Comments

  1. Thank you for explaining in a simple, seamless, down to earth manner that the nursing student can actually grasp. You have been a great resource for my 4th semester studies. ๐Ÿ™‚ I have shared your You Tube channel and Web site with my fellow classmates as well and they concur. ๐Ÿ™‚

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