33627082 mcq respiratory

8/13/2019 33627082 Mcq Respiratory

1/6

MCQ RESPIRATORY

1. Pulmonary vascular resistance is increased in

a. Increase in pulmonary arterial pressure

. !ypocaria

c. Al"alosis

d. Increased le#t atrial pressure

e. elevated C$P

%. T&e 'reatest increase in dead space (ould e e)pected (it&

a. Pulmonary emolism

. Atelectasis

c. Pneumot&ora)

d. *ronc&oconstriction

e. Oesity

+. t&e di##erence et(een t&e apical and asal alveoli in an erect lun'

a. Apical PaO% , asal PaO%

. Apical PaCO% - *asal PaCO%

c. $Q mismatc& Apical , *asal

d. Compliance *asal - Apical

e. Per#usion increases as 'o up t&e lun'

/. Perip&eral c&emoreceptors

a. 0ocated in in t&e carotid sinus

. !ave 'lomus cells

c. Innervated y 'lossop&aryn'eal nerve


2/6

d. *lood #lo( o# %mls'min

e. !ave a nonlinear response to paO% c&an'es

2. Sur#actant

a. Is produced y type 1 pneumocytes

. Reduces t&e amount o# ne'ative intrapleural pressure

c. Increases pulmonary compliance

d. Increases sur#ace tension in smaller alveoli to promote staility

e. Causes &ysteresis

3. T&e lun'

a. Removesinactivates serotonin 42!T5

. Activates rady"inin

c. Converts an'iotensin II to I

d. Inactivates aldosterone

e. Ta"es up noradrenaline

6. 7&ic& o# t&e #ollo(in' is inactivated in t&e lun'

a. $asopressin

. An'iotensin I

c. Serotonin


3/6

d. An'iotensin II

e. !istamine

8. P&ysiolo'ical dead space increases (it&

a. Anaest&esia

. Supine position

c. PEEP

d. !ypotension

e. Pleural e##usion

9. S&unt can e calculated y "no(in'

a. Cardiac output

. Arterial o)y'en content

c. Mi)ed venous o)y'en content

d. End pulm. capillary o)y'en content

e. Partial pressure o# O%

1.Alveolar pressure

a. Is ne'ative t&rou'&out normal :uiet reat&in'

. Is less t&an 2;3 cms !%O durin' :uiet inspiration

c. Is


4/6

. !ave aroreceptors activity

c. Respond to c&an'es in o)y'en content o# t&e lood

d. Respond to c&an'es in p!

e. Are not a##ected y carotid endarterectomy

1%.Concernin' compliance

a. 0un' compliance is les t&an total compliance

. >ynamic compliance is less in a paralysed patient

c. In IPP$ tidal volume depends only on compliance

d. Compliance is directly proportional to $Q ratio

e. Compliance in a 2 year old is doule t&an t&at o# a % year old.

1+.T&e #ollo(in' can e determined #rom t&e volume pressure curve

a. 7or" o# reat&in'

. =RC

c. S&unt

d. Static Compliance

e. >ynamic Compliance

1/.*reat&in' in t&e lateral position

a. $entilation is 'reater in t&e upper lun'

. PO% is 'reater in t&e lo(er lun'

c. $Q ratio in t&e lo(er lun' is increased

d. Per#usion is 'reater in t&e upper loe

e. $Q is aout 1 near ri'&t pulmonary artery


5/6

12.Closin' volume

a. Is 1? o# a #it youn' persons vital capacity

. $aries (it& e)tremes o# a'e

c. Increases (it& supine position

d. Increases (it& oesity

e. *y la( is more t&an closin' capacity


6/6

SAQ Respiratory

1. 0ist t&e p&ysiolo'ical #actors (&ic& increase respiratory rate. Include a

rie# e)planation o# t&e mec&anism y (&ic& eac& ac&ieves t&isincrease.

%. >escrie t&e #actors t&at a##ect lun' compliance

+. >ra( an e)piratory #lo( volume curve #or a #orced e)piration #rom total

lun' capacity. >escrie its c&aracteristics in people (it& normal lun's@

as (ell as t&ose (it& ostructive and restrictive lun' disease.

33627082 mcq respiratory

Documents