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30 Cards in this Set
- Front
- Back
1.
CO (Cardiac output) = _____x _______ |
HR x SV
normal is 4-8liters per minute |
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2.
Stroke Volume SV= |
SV (stroke volume)= CO in ml’s divided by HR
Normal range= 60-130ml |
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3.
What is the formula for MAP (mean arterial pressure) |
Systolic BP + (2 x diastolic) divided by 3
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4.
The patient has a BP of 140/90 calculate the MAP. |
step1: 140 + 2x90 = 320
step2: 320/3 = 106.6 answer: = 107mm/hg |
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5.
FORMULA FOR ANGIOGRAPHIC SV(stroke volume) = |
End Diastolic volume minus the End systolic Volume
EDV-ESV |
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6.
Calculate the ANGIOGRPAPHIC SV (STROKE VOLUME) GIVEN: • EDV=140ML • ESV= 40ML |
Formula:
EDV-ESV 140ml-40ml = 100ml |
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7.
What is the average SV (stroke volume) in adults? |
70ml
range is 60-130ml |
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8.
Given: CO 5liters/min Heart rate 80 Calculate the SV (stroke volume) |
Formula: SV= COin ml/HR
step 1: Change 5 liters to ml =5000ml step 2: Divide by heart rate of 80 5000/80=62.5 or 63ml/min |
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9.
Given HR 90 SV 100ml Calculate the CO(cardiac output) |
CO=HRxSV
90x100=9000 CO=9000ml/min or 9L/min |
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10.
Angiographic Cardiac output or LVMF (left ventricular minute flow) What is the Formula for LVMF? |
LVMF=
LV end diastolic volume - LV end systolic volume x Heart rate LVEDV - LVESV x HR |
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11.
Calculate the LVMF or Angiographic Cardiac output Given: LVEDV = 140ml LVESV = 40ml HR = 66 bpm |
LVMF = LVEDV - LVESV x HR
step 1: 140ml - 40ml = 100ml step 2: 100ml x 66 bmp=6600ml answer: LVMF = 6600ml/min or 6.6liters/min |
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12.
RF REGURGITATION FRACTION DEFINITION |
The ratio of regurgitation to the LV total flow.
This is the most accurate form of cardiac output for patients with valvular regurgation. |
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13.
Formula for RF %(Regurgitation Fraction) using Cardiac Output |
Formula for Regurgitation Fraction
LVMF - CO from Fick or TD divided by LVMF |
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14.Calculate the RF% (regurgitation fraction)
Given LVMF is 6.6liters/min TD (thermodilution) CO is 4.56liters/min |
LVMF - CO from Fick or TD
divided by LVMF step 1: 6.6liters - 4.56liters =2.04 liters Step 2: 2.04/6.6=.309 Step 3: .309 x 100 = 30.9% |
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15.
Cardiac Index Formula for CI is |
CI= CO/BSA
Cardiac output divided by the Body Surface Area Normal values= 2.5-4.2 L/min/meter squared |
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16.
What is BSA or Body Surface Area |
Body surface area: BSA. The total suface area of the human body. The BSA is used in many measurements in medicine, including the calculation of drug dosages and the amount of fluids to be administered IV.
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17.
What is the Average BSA for men and for women? |
Average BSA for adult men: 1.9 m2
Average BSA for adult women: 1.6 m2 |
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18.
ANGIOGRAPHIC SV (STROKE VOLUME) DEFINITION |
THE AMOUNT OF BLOOD BEING EJECTED FROM THE LV DURING EACH CONTRACTION. THE ANGIOGRAPHIC SV can be calculated using the formula:
SV = EDV-ESV. End Diastolic Volume and End Systolic Volume must be calculated by using quantitative measurements of the LV angiography. Average Stroke Volume for adults is 70 ml. |
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19. PVR
(Pulmonary Vascular Resistance) Formula |
(Mean PA) – (Mean PCW)
divided by CO Given: PA= 25/10/15 PCW=9/6/6 CO=6.8 (15-5)/6 = 1.3 HRU’s (Hybrid or Wood Units) 1.3 x 80 = 104 dynes/sec/cm-5 ARU’s |
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20. Pulse Pressure Formula
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AO systolic – AO diastolic
Given: BP=120/80 120-80 = 40 Answer 40mmHg |
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21. Normal Range for Absolute Resistance Units (ARU’s) for SVR and PVR
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SVR = 1130 +or- 178
PVR = 67 +or- 23 |
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22. Formula for Conversion of HRU’s (Hybrid Resistance Untis) to ARU’s Absolute Resistance Units
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SVR = HRU’s x 80
PVR = HRU’s x 80 |
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23. The formula for BP
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CO x SVR (systemic vascular resistance)
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24. Normal Range for Absolute
Resistance Units (ARU’s) for SVR and PVR |
SVR = 1130 + or - 178
PVR = 67 + or - 23 |
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25. Formula for Peak to Peak Gradient
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LV systolic - AO systolic
Given: LV 180/0/18 AO 130/70 180-130=50 Answer: 50mmHg Gradient |
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26. Normal O2 Consumption
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Adult 250ml/min
Child 150ml/min |
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27. Formula for Ejection Fraction
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Stroke Volume
divided by End Diastolic volume |
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28. Ejection Fraction Formula
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Formula:
SV(stroke volume)/EDV |
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28. Calculate the Ejection Fraction
Given: EDV 130 ESV 70 |
Formula:
SV(stroke volume)/EDV 130-70/130=.46 .46 or 46% |
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29. The dP/dT comes from delta P/delta T or change in pressure over time and is a good index of ?
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LV contractility
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