31q: a patient with spontaneous pneumothorax involving more than 50 % of the hemithorax is best treated with ?
a. needle aspiration
b. closed drainage by tube in underwater seal
c. let spontaneous remission occur
d. open thoracotomy
answer: b . closed drainage by tube in underwater seal .
32q: hamman's crunch is seen in ?
a. caries tooth
b. fracture mandible
c. mediastinal emphysema
d. niemann-pick's disease
answer: c . mediastinal emphysema.
33q: the organism most frequently related to mediastinal fibrosis ?
a. actinomyces
b. histoplasma
c. hansen bacillus
d. staphylococcus
answer: b . histoplasma .
34q: hypercapnea at rest is most indicative of ?
a. hypoventilation
b. right to left shunt
c. impaired diffusion
d. CO poisoning
answer: a . hypoventilation .
35q: about systemic inflammatory response syndrome ( SIRS ) all are true except ?
a. leukopenia
b. hyperthermia
c. hypoxia
d. tachycardia
answer: c . hypoxia .
36q: lung abscesses are least likely to be caused by ?
a. histoplasma
b. staphylococcus
c. metastatic malignancy
d. primary carcinoma
answer: c . metastatic malignancy .
37q: primary disease causing raised PCO2 manifests as ?
a. respiratory acidosis
b. respiratory alkalosis
c. metabolic acidosis
d. metabolic alkalosis
answer: a . respiratory acidosis .
38q: the following are CNS findings of CO2 narcosis except ?
a. excitement
b. increased pH of CSF
c. decreased pH of CSF
d. papilloedema
answer: b . acidosis results due to CO2 narcosis therefore decreasing the pH .
39q: respiratory acidosis is seen with ?
a. DKA
b. pneumonia
c. emphysema
d. phenytoin
answer: c . emphysema .
40q: respiratory acidosis is seen with ?
a. starvation
b. hyperventilation
c. muscular dystrophy
d. vomiting
answer: c . muscular dystrophy .
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