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WVSOM -- Physio
Systemic Circulation
| Question | Answer |
|---|---|
| Pulse Pressure | systolic - diastolic |
| Current = | Voltage/resistance |
| TPR | total peripheral resistance |
| Q= | Arterial Pressure / TPR |
| MAP | Mean Arterial Pressure |
| MAP = | Diastolic + 1/3(PP) CO X TPR |
| SV = | EDV-ESV |
| CO = | SV X HR |
| 80% of total BV is in the ___________ | systemic circulation |
| Most of the blood in the systemic circulation is in the | veins |
| Central BV contains _____% of total BV | ~20-25 |
| Central BV is | Central vena cava Intrathoracic portions of the inferior vena cava Right atrium and ventricle pulmonary circulation left atrium |
| CVP | central venous pressure |
| 2 ways to alter CBV | increase or decrease the total BV OR redistribute the BV you have |
| MSFP | mean circulatory filling pressure |
| Venous return must equal | cardiac output |
| Right atrial pressure depends on | Cardiac Output and Venous return |
| Venous return determines | Right Atrial Pressure |
| Right Atrial Pressure determines | Venous Return and Cardiac Output |
| Things that shift teh vascular curve up and down are | blood volume and venous tone |
| What happens to MCFP when there is more BV or an increase in VT? | increase |
| Things that can change MCFP | SNS tone blood volume contraction of skeletal muscle |
| Increasing arteriolar resistance __________ venous return | increases |
| Cardiac function curve plots cardiac function as a functino of | RAP or CVP |
| Increased TPR effect on cardiac function and venous return curves | Vasoconstriction Lowers CO May shift both cardiac function and venous return curves |
| Heart Failure effect on the venous return and cardiac function curve | Cardiac function goes down and then Venous Return goes up to compensate |
Created by:
tjamrose
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