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