Pulmonary Flashcards

1
Q

What is vital capacity?

A

Inspiratory capacity + expiratory reserve volume

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is TLC defined?

A

VC + RV

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

How does vital capacity change in pregnancy?

A

VC: 20% increase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

How does total lung capacity change in pregnancy?

A

TLC: 5% decrease

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

How does functional residual capacity change in pregnancy?

A

FRC: 20% decrease (expanding uterus and increased abdominal pressure cause chest wall compliance to decrease, so FRC (ERV+RV) decreases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

How does inspiratory capacity change in pregnancy?

A

IC: 20% increase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How does tidal volume change in pregnancy?

A

TV: 500->700mL = 40% increase due to respiratory stimulant properties of progesterone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How does minute ventilation change in pregnancy?

A

MV: 7.5->10.5L/min = 40% increase due to increased tidal volume

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

How does alveolar ventialtion change in pregnancy?

A

Alveolar ventilation: 40% increase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

How does expiratory reserve volume change in pregnancy in regards to ERV

A

ERV: 15% decrease

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

How does residual volume change in pregnancy?

A

RV: 1200->1000mL =15% decrease

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

How does respiratory rate change in pregnancy?

A

RR: unchanged

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How does PaCO2 change in pregnancy?

A

PaCO2: decreases from 40 to 32 mmHg; pH 7.44-mild respiratory alkalosis (CO2 production increases approx 30%, but diffusion capacity increases, and with alveolar hyperventilation, the pCO2 decreases)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

How is pulmonary hypertension defined in nonpregnant individuals?

A

Mean pulmonary pressure > 25 mmHg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What medications are used for primary pulmonary hypertension?

A

Diuretics, supplemental oxygen, vasodilator drugs
Choices from 2009 exam: Labetalol, Viagra, Hydralazine, CCB)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

How do you calculate an A-a gradient?

A

??