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Flashcards in Resp short answer Deck (16):
1

the maximum volume of air that can be voluntarily healed following a maximum inspiration

vital capacity

2

Air flow into the lungs during inspiration because ........ muscles contract and the thoracic volume .......

external intercostal and diaphragm

increases

3

Mr tickle has a resp rate of 10 breaths per minute. Tidal volume of 700ml and dead space volume of 200ml


what is his alveolar ventilation?

700-200

x10

5000ml/min

4

partial pressure of oxygen in mixed venous blood is

40 mmHg

5

Arterial partial pressure of oxygen will be reduced in which of the following conditions?

Anaemia
CO poisoning
Emphysema
Traumatic peripheral haemorrhage

Emphysema

6

Which of the following is NOT true of people with chronic lung disease?


Arterial PCO2 levels are elevated

NO is a safe sedative to use

they're on a hypoxic drive

they have decreased sensitivity to PCO2

they rely on peripheral chemoreceptors for stimulating ventilation

NO is a safe sedative to use


(NOT TRUE)

7

Shunt is the term given when

perfusion exceeds ventilation

8

Which of the following shift the oxygen haemoglobin curve to the right?

asthma attack

9

shift curve left or right?

marathon

right


(increase in temperature, CO2 etc)

10

Shift curve left or right?

hypothermia

left

(decrease in temperature)

11

Shift curve left or right?

Foetal haemoglobin

left

it has a higher affinity for oxygen than the adult haemoglobin)

12

Shift curve left or right?

respiratory alkalosis

left


(reduces PCO2)

13

Shift curve left or right?

voluntary hyperventilation

decreases PCO2 so shift would go to the LEFT

14

A 59 year old man with known squamous carcinoma of the lung is admitted to hospital as an emergency with abdominal pain, constipation and confusion.

what is the most appropriate investigation?

serum calcium



symptoms are for hypercalcemia due to parathyroid related hormone

15

35 year old man has cystic fibrosis - the most likely organism infecting his lungs would be

pseudomonas aeruginosa

16

50 year old man with lobar pneumoniae

most likely organism to be involved is

streptococcus pneumoniae