Hemodynamics Basic Word Scramble
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| Question | Answer |
| The factors that control blood pressure | The Heart, Blood/Fluid & Vessels |
| The amount of blood pumped out of the left ventricle in a minute | Cardiac Output |
| Cardiac Output normal range | 4-8 LPM |
| Formula for Cardiac Output | CO= HR X SV (Must be in liters) |
| Volume or amount of blood ejected with each beat | Stroke Volume |
| Stroke Volume Normal range | 60-130 mL/Beat |
| Formula for stroke volume | SV= CO / HR (answer in mL) |
| Amount ejected from heart depends on 3 things | Preload, Afterload & Contractility |
| Amount of stretch on Ventricle at filling before contraction (End Diastole) | Preload |
| Resistance to ventricular emptying | Afterload |
| RV pumps against | PVR (Pulmonary vascular resistance) |
| LV pumps against | SVR (Systemic Vascular Resistance) |
| Relates to the amount of stretching of the heart. | Starlings Law |
| What happens to contraction of the heart with increased stretching | stronger contraction which will increase cardiac output. |
| Volume of blood returning to the right atrium | Venous Return |
| Used to describe flow output taking into consideration body size. | Cardiac Index |
| Formula for Cardiac Index | QT/BSA =CI |
| Cardiac Index Normal range | 2.5-4.0 L/min/m2 |
| BSA Formula | (4 X KG) +7 / Kg +90 |
| Numbers that represent the afterload for each of the ventricles | PVR & SVR |
| PVR Formula | (MPAP-PCWP)/CO X 80 |
| NORMAL RANGE FOR PVR | <200 DYNES/SEC/CM5 OR <2 UNITS |
| SVR CALCULATION | MAP-CVP/CO X80 |
| NORMAL RANGE FOR SVR | 800-1500 DYNES OR 15-20 UNITS |
| AVERAGE OF THE PRESSURES PUSHING BLOOD THROUGH THE SYSTEMIC CIRCULATION. INDICATOR OF TISSUE PERFUSION | MAP |
| MAP FORMULA | SYSTOLIC BP + (DIASTOLIC BP X2) / 3 |
| NORMAL MAP RANGES | 80-100mmHg |
| DIFFERENCE BETWEEN SYSTOLIC AND DIASTOLIC PRESSURE | PULSE PRESSURE |
| This happens when BP is too low | tissues wont recieve O2 |
| This happens when BP is too high | Strain the heart and will eventually cause failure |
| The pump that creates BP | Heart |
| INCREASED HR OR STRENGTH OF CONTRACTION | INCREASE BP |
Created by:
mandy0630
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