Pulmonary Hypertension Flashcards Preview

Small Animal Internal Medicine > Pulmonary Hypertension > Flashcards

Flashcards in Pulmonary Hypertension Deck (21):
1

What is normal pulmonary artery pressure?

25 mmHg

2

What pressure within the pulmonary artery is considered pulmonary hypertension?

>30 mmHg

3

What is the pressure range for mild PHT?

30-50 mmHg

4

What is the pressure range for moderate PHT?

50-75 mmHg

5

What is the pressure range for severe PHT?

> 75 mmHg

6

Disease of the pulmonary arteries is considered ____ PHT.

Precapillary

7

Disease of the pulmonary veins is considered ____ PHT.

Postcapillary

8

What 2 main changes happen within the heart with PHT and are noticeable on echo?

1. Right ventricular hypertrophy

2. Right ventricular dilation

3. Main pulmonary artery enlargement

9

What is the etiology of right heart failure associated with pulmonary hypertension?

Too much afterload

10

What signalment would you expect with PHT?

Older, small breed dog

11

What clinical signs would you associate with PHT?

1. Exercise intolerance

2. Syncope

12

What type of murmur would you hear with PHT?

No murmur / soft murmur

13

What type of changes would you expect in thoracic radiographs with PHT?

1. RV enlargement

2. Pulmonary artery distension

14

The velocity of blood flow is determined by a pressure gradient. What is the PG equal to?

4 x velocity^2

15

What stage of the heartworm is infective?

L3

16

What life stage(s) of the heartworm is/are susceptible to heartworm preventatives?

L3 and L4

17

What life stage(s) of the heartworm is/are susceptible to Marlarsomine?

Mature adults

18

To which life stage of the heartworm is the antibody test responsive?

L4

19

To which life stage of the heartworm is the antigen test responsive?

Mature adult (female)

20

If a heartworm antigen test comes up positive, what test should you run next?

Microfilaria test

21

As it pertains to heartworm disease, what are 4 possible complications and their therapeutic interventions?

1. Eosinophilic pneumonitis (prednisone)

2. Pulmonary vascular disease (sildenafil)

3. R-CHF (furosemide, pimobendan, enalapril, spironolactone)

4. Caval syndrome (surgical HW extraction)