[MCQ] Disturbances of Respiratory Function- Part 3

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Disturbances of Respiratory Function- Part 3

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Congratulations - you have completed Disturbances of Respiratory Function- Part 3. You scored %%SCORE%% out of %%TOTAL%%. Your performance has been rated as %%RATING%%

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Question 1

What concentration of carbon monoxide is inhaled to assess DL CO ?

A	0.3 %
B	0.5 %
C	0.75 %
D	0.1 %

Question 1 Explanation:

To assess the diffusing capacity of lung for carbon monoxide (DLCO), 0.3% of carbon monoxide is inhaled in a single breath & held for ~10 seconds.

Question 2

The hallmark of hypoventilation as a cause of hypoxemia is ?

A	Decrease in Pa CO2
B	Elevation in Pa CO2
C	Decrease in Pa O2
D	Elevation in Pa O2

Question 2 Explanation:

Hallmark of hypoventilation as a cause of hypoxemia is an elevation in PaCO2.

Question 3

Which of the following is rarely responsible for hypoxemia ?

A	Abnormalities in diffusion
B	Decrease in inspired PO2
C	Hypoventilation
D	Shunting

Question 3 Explanation:

Abnormalities in diffusion are rarely responsible for hypoxemia.

Question 4

Disease associated with lowered DL CO is ?

A	Interstitial lung disease
B	Emphysema
C	Pulmonary vascular disease
D	All of the above

Question 4 Explanation:

Lowered DL CO is found in interstitial lung disease, emphysema & pulmonary vascular disease

Question 5

Diffusing capacity (DLCO) may be elevated in ?

A	Goodpasture’s syndrome
B	Interstitial lung disease
C	Emphysema
D	All of the above

Question 5 Explanation:

Diffusing capacity may be elevated in congestive heart failure and in alveolar hemorrhage as in Goodpasture’s syndrome. Hb in RBCs in alveolar lumen binds CO leading to increased DLCO

Question 6

In a normal man aged 40 years, weight 75 kg, height 175 cm, what is the expected value of FVC ?

A	3.2 Litres
B	4.0 Litres
C	4.8 Litres
D	5.6 Litres

Question 7

In a normal man aged 40 years, weight 75 kg, height 175 cm, what is the expected value of FEV1 ?

A	2.8 Litres
B	3.0 Litres
C	3.8 Litres
D	3.8 Litres

Question 8

In a normal man aged 40 years, weight 75 kg, height 175 cm, what is the expected value of FEV1/FVC ratio ?

A	66 %
B	76 %
C	86 %
D	96 %

Question 9

For cyanosis to occur, hemoglobin concentration should be more than ?

A	3 gm %
B	4 gm %
C	4 gm %
D	4 gm %

Question 9 Explanation:

Cyanosis becomes apparent when the concentration of reduced hemoglobin in capillary blood exceeds 4 gm/dL. It is the absolute, rather than the relative, quantity of reduced hemoglobin that is important in producing cyanosis

Question 10

In peripheral cyanosis, the extremities are ?

A	Hypothermic
B	Hyperthermic
C	Normothermic
D	Any of the above

Question 11

In which condition, cyanosis does not occur ?

A	Periheral circulatory failure
B	Cyanotic congenital heart disease
C	Carbon monoxide poisoning
D	All of the above

Question 12

Which of the following site is best for detecting central cyanosis ?

A	Skin
B	Nails
C	Oral mucous membranes
D	Ear lobule

Question 12 Explanation:

Examination of mucous membranes in oral cavity & conjunctivae rather than skin is more helpful in the detection of cyanosis.

Question 13

Cyanosis usually becomes manifest at an altitude of ?

A	1000 meters
B	2000 meters
C	4000 meters
D	6000 meters

Question 13 Explanation:

Cyanosis usually becomes manifest at an altitude of 4000 meters (13,000 ft)

Question 14

At a height of 8000 feet, the FIO2 is about ?

A	80 mmHg
B	100 mmHg
C	120 mmHg
D	140 mmHg

Question 15

At a height of 16000 feet, the FIO2 is about ?

A	62 mmHg
B	85 mmHg
C	115 mmHg
D	138 mmHg

Question 16

Which of the following comes first in clinical manifestation of Raynaud’s phenomenon ?

A	Blanching or pallor
B	Cyanosis
C	Rubor or erythema
D	Oedema

Question 16 Explanation:

Raynaud’s phenomenon is characterized by episodic digital ischemia & a triphasic color response manifested clinically by sequential development of digital blanching (vasoconstriction), cyanosis (ischemia) & rubor (reperfusion) of fingers or toes following cold exposure & subsequent rewarming

Question 17

Which of the following is false about acrocyanosis ?

A	Episodic peripheral cyanosis of the hands
B	Cyanosis intensified by cold
C	Trophic skin changes & ulcerations do not occur
D	Normal pulses

Question 17 Explanation:

In acrocyanosis , there is arterial vasoconstriction & secondary dilation of capillaries & venules with resulting persistent peripheral cyanosis of the hands & feet, intensified by cold exposure, normal pulses, moist palms, no trophic skin changes & ulcerations.

Question 18

In frostbite, after rewarming, which of the following occurs ?

A	Cyanosis & erythema
B	Wheal-and-flare formation
C	Edema & superficial blisters
D	All of the above

Question 18 Explanation:

All of the above

Question 19

Differential cyanosis in patent ductus arteriosus means ?

A	Cyanosis in fingers but not toes
B	Cyanosis in toes but not fingers
C	Cyanosis in lips & cheek but not fingers & toes
D	None of the above

Question 19 Explanation:

In PDA with severe pulmonary vascular disease, reversal of flow through ductus results in shunting In PDA with severe pulmonary vascular disease, reversal of flow through ductus results in shunting

Question 20

Which of the following is false about hemoptysis ?

A	Airways
B	Pulmonary parenchyma
C	Pulmonary vasculature
D	All of the above

Question 20 Explanation:

Hemoptysis can originate from disease of airways (acute or chronic bronchitis, bronchiectasis, cystic fibrosis, bronchogenic carcinoma or bronchial carcinoid tumors), pulmonary parenchyma (pneumonia, lung abscess, tuberculosis, Aspergillosis, Goodpasture’s syndrome, idiopathic pulmonary hemosiderosis), or pulmonary vasculature (pulmonary thromboembolic disease, pulmonary arteriovenous malformations)

Question 21

A dilated vessel in a pulmonary tuberculosis cavity is called ?

A	Rasmussen’s aneurysm
B	Bouchart’s aneurysm
C	Charcot’s aneurysm
D	Beyer’s aneurysm

Question 21 Explanation:

In pulmonary tuberculosis, massive hemoptysis may occur from rupture of a dilated vessel in a cavity (Rasmussen’s aneurysm).

Question 22

Kussmaul’s breathing is seen in ?

A	Diabetic ketoacidosis
B	Hypoglycemia
C	Superior vena cava syndrome
D	Pneumothorax

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See all quizzes of Disturbances of Respiratory Function at here:

Disturbances of Respiratory Function- Part 1 | Disturbances of Respiratory Function- Part 2 | Disturbances of Respiratory Function- Part 3| Disturbances of Respiratory Function- Part 4

1.What concentration of carbon monoxide is inhaled to assess DL CO ?
A. 0.3 %
B. 0.5 %
C. 0.75 %
D. 0.1 %

2. The hallmark of hypoventilation as a cause of hypoxemia is ?
A. Decrease in Pa CO2
B. Elevation in Pa CO2
C. Decrease in Pa O2
D. Elevation in Pa O2

3. Which of the following is rarely responsible for hypoxemia ?
A. Abnormalities in diffusion
B. Decrease in inspired PO2
C. Hypoventilation
D. Shunting

4. Disease associated with lowered DL CO is ?
A. Interstitial lung disease
B. Emphysema
C. Pulmonary vascular disease
D. All of the above

5. Diffusing capacity (DLCO) may be elevated in ?
A. Goodpasture’s syndrome
B. Interstitial lung disease
C. Emphysema
D. All of the above

6. In a normal man aged 40 years, weight 75 kg, height 175 cm, what is the expected value of FVC ?
A. 3.2 Litres
B. 4.0 Litres

C. 4.8 Litres
D. 5.6 Litres
7. In a normal man aged 40 years, weight 75 kg, height 175 cm, what is the expected value of FEV1 ?
A. 2.8 Litres
B. 3.0 Litres
C. 3.8 Litres
D. 5.2 Litres
8. In a normal man aged 40 years, weight 75 kg, height 175 cm, what is the expected value of FEV1/FVC ratio ?
A. 66 %
B. 76 %
C. 86 %
D. 96 %
9. For cyanosis to occur, hemoglobin concentration should be more than ?
A. 3 gm %
B. 4 gm %
C. 5 gm %
D. 6 gm %

10. In peripheral cyanosis, the extremities are ?
A. Hypothermic
B. Hyperthermic
C. Normothermic
D. Any of the above
11. In which condition, cyanosis does not occur ?
A. Periheral circulatory failure
B. Cyanotic congenital heart disease
C. Carbon monoxide poisoning
D. All of the above
12. Which of the following site is best for detecting central cyanosis ?
A. Skin
B. Nails
C. Oral mucous membranes
D. Ear lobule

13. Cyanosis usually becomes manifest at an altitude of ?
A. 1000 meters

B. 2000 meters
C. 4000 meters
D. 6000 meters

14. At a height of 8000 feet, the FIO2 is about ?
A. 80 mmHg
B. 100 mmHg
C. 120 mmHg
D. 140 mmHg
15. At a height of 16000 feet, the FIO2 is about ?
A. 62 mmHg
B. 85 mmHg
C. 115 mmHg
D. 138 mmHg
16. Which of the following comes first in clinical manifestation of Raynaud’s phenomenon ?
A. Blanching or pallor
B. Cyanosis
C. Rubor or erythema
D. Oedema

17. Which of the following is false about acrocyanosis ?
A. Episodic peripheral cyanosis of the hands
B. Cyanosis intensified by cold
C. Trophic skin changes & ulcerations do not occur
D. Normal pulses

18. In frostbite, after rewarming, which of the following occurs ?
A. Cyanosis & erythema
B. Wheal-and-flare formation
C. Edema & superficial blisters
D. All of the above

19. Differential cyanosis in patent ductus arteriosus means ?
A. Cyanosis in fingers but not toes
B. Cyanosis in toes but not fingers
C. Cyanosis in lips & cheek but not fingers & toes
D. None of the above

20. Which of the following is false about hemoptysis ?
A. Bright red colour
B. Alkaline pH
C. Massive hemoptysis is > 600 mL/day
D. None of the above

21. Hemoptysis can originate from disease of ?
A. Airways
B. Pulmonary parenchyma
C. Pulmonary vasculature
D. All of the above

22. A dilated vessel in a pulmonary tuberculosis cavity is called ?
A. Rasmussen’s aneurysm
B. Bouchart’s aneurysm
C. Charcot’s aneurysm
D. Beyer’s aneurysm

23. Kussmaul’s breathing is seen in ?
A. Diabetic ketoacidosis
B. Hypoglycemia
C. Superior vena cava syndrome
D. Pneumothorax

Disturbances of Respiratory Function

[MCQ] Disturbances of Respiratory Function- Part 3

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Disturbances of Respiratory Function- Part 3

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