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NPTE PREP (Josh) > CV & Pulmonary Equations > Flashcards

CV & Pulmonary Equations Flashcards

1
Q

Cardiac Volumes:

End Diastolic Volume (EDV)==

A

Amt of blood in ventricles @ the END of diastole
~110 mL

End Diastolic Volume

Yaaaaaa!!!!

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2
Q

Cardiac Volumes:

End Systolic Volume (ESV)/End residual volume ==

A

Amt of blood in the ventricles @ the END of systole
~40mL

End sytolic volume/end residual volume

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3
Q

Cardiac Volumes:

Stroke Volume (SV)==

A

Amt of blood Ejected from ventricles @ Systole
~70mL**

EDV-ESV

WHOLE amt of blood ejected from vents

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4
Q

Cardiac Volumes:

Atrial Systole accts for ~___% of EDV

A

15-30%

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5
Q

Cardiac Output (CO)==

A

HR*SV
(~70mL x 70bpm==5L/min)

CO==HRxSV ***

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6
Q

Ejection Fraction (EF)==

A

% of blood ejected OVER received to the ventricles
~60-70%

SV/EDV OR (EDV-ESV)/EDV

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7
Q

Cardiac Pressures:

Central Venous Pressure (CVP) or Preload

A

0-8mm Hg Diastolic pressure

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8
Q

Total Peripheral Resistance (TPR) or Afterload

A

119/79 mmHg

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9
Q

Cardiac Pressures:

Mean Arterial Pressure (MAP) ==

A

(SBP+2DBP)/3

MAP also== COxTPR

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10
Q

Cardiac Pressures:

BP==

A

COxTPR

CO==HRxSV

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11
Q

Cardiac Pressures:

Pulse Pressure==

A

SBP-DBP

*not as important

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12
Q

Cardiac Pressures:

Myocardial O2 Consumption/Rate Pressure Product==

A

Total Workload of the Heart==HRxSBP

RPP= HRxSBP

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13
Q

Vascular:

a-v02 Difference==

A

Diff bw arterial partial pressure and venous partial pressure
@rest ~25%
w/ exercise ~75%

a-v02 Difference

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14
Q

Pulmonary:

Tidal Volume==

A

Amt of air that moves IN or OUT of the lungs w/ ea respiratory cycle

500mL healthy male
400mL health female

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15
Q

Pulmonary:

Minute Ventilation (VE)==

A

VTxRR

Units: L/min

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16
Q

Pulmonary:

Maximum Voluntary Ventilation (MVV)==

A

VTmax * RRmax

units: L/min

17
Q

Pulmonary:

Ventilatory Index ==

A

VE/MVV

normal exercise ~60%

18
Q

Pulmonary:

Inspiratory Capacity (IC)==

A

VT+Inspiratory Reserve Volume

19
Q

Pulmonary:

Functional Residual Capacity (REC)==

A

RV + Expiratory reserve volume

20
Q

Pulmonary:

Vital Capacity (VC) ==

A

Inspiratory reserve volume + Expiratory reserve volume + VT

21
Q

Total Lung Capacity (TLC)==

A

Inspiratory reserve volume + Expiratory reserve volume + VT + RV

22
Q

Pulmonary:

FEV1/FVC==

A

% of air EXHALED in first second of forced exhalation
*should be around ~75%

FEV1/FVC

23
Q

Pulmonary:

Ventilation (V) and Perfusion (Q) match:

A

Ventilation (V)/Perfusion (Q)
**Avg=.80

Avg 4L/5L=.80

24
Q

V/Q Matching
SHUNT

A

0-LOW V/normal Q
Ex. PNA (pneumonia)

0-low V/norm Q

25
Q

V/Q Matching
PHYSIOLOGICAL **DEAD SPACE

A

Norm V/0-LOW Q
Ex. PE (pulmonary embolism)

norm V/0-low Q

26
Q

Pulmonary:

Diffusion==

A

Dalton’s law for partial pressures of O2 and CO2 in alveoli/adjacent capillaries and all membranes

27
Q

O2 Carrying Capacity (CaO2)==

A

(1.34)(HgB concentration)(SaO2)

28
Q

Bring it all together:

Maximum O2 Consumption (VO2max)==

A

Pt @ which O2 consumption does NOT inc w/ an inc’d exercise intensity

consumed as much as they could==fitness lvl

29
Q

Bring it all together:

VO2==

A

CO * (a-v02)

CO=HR x SV

Avg person can achieve 30-40mL/kg/min

30
Q

Bring it all together:

AVG person can achieve _________VO2max

A

30-40mL/kg/min

31
Q

Bring it all together:

MET lvls==

A

Lvls of exercise intensity

Metabolic Equivalents

Avg person can achieve 10 METS

32
Q

Bring it all together:

One MET ==

A

Amt of O2 consumed while sitting @ rest
= 3.5ml O2 per kg bw/min

VO2 3.5mL/kg/min==1 MET

33
Q

Body Composition Equations:

Body Mass Index (BMI)==

A

Body mass (kg)/Ht (M^2)

if using inches/lbs, MUST convert first: (Ht in inches x .0254)^2 and Kg

34
Q

Body Composition Equations:

Waist:Hip Ratio (WHR)==

A

Waist circumference (above iliac crest)/Hip circumference (@ maximal gluteal circumference)

can use inches or cm since ratio/percentage–stay consistent!

35
Q

Body Composition Equations:

Fat Mass ==

A

Body mass x %BF in decimals

Use Kg (Kg=lbs/2.2)

Ex. Fat mass = body mass x (%fat/100)
50kg x .252==12.5kg

36
Q

Body Composition Equations:

Lean Body Wt (LBW) or Fat Free Body Mass (FFM)==

A

Body Mass (use Kg) - Fat mass

FFM=Body mass-Fat mass
=50kg - 12.5kg == 37.5kg

37
Q

Body Composition Equations:

Determining “Goal BW”
Goal BW ==

A

Lean BW/1-%fat desired

For %fat desired: use normal values
Males=15%, Females=27%

38
Q

Body Composition Equations:

Determine Fat Loss Goal
Desired Fat Loss==

A

Present Body Mass-Goal BW

Use when wristing Goals!

39
Q

Calculating caloric deficit you need to create amt of “fat loss” desired

A

Convert to lbs (lbs=Kg x 2.2)
1lb fat= 3500 kcals

NPTE PREP (Josh) (13 decks)

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