61q: study the results of the pulmonary function tests shown below ?
predicted FEV1 of 3.5-4.3 but actual FEV1 is 1.2
predicted FVC of 4.6-5.4 but the actual FVC is 4.1
predicted FEV1/FVC is 72-80 % but the actual value is 29 %
predicted PEF is 440-540 but the actual value is 80
the above results are consistent with the disease of ?
a. chronic bronchitis
b. interstitial lung disease
c. pneumonia
d. pneumothorax
answer: a . chronic bronchitis . the parameters indicate that the disease is an obstructive disease and so the answer is chronic bronchitis .
62q: a previously healthy factory worker was found unresponsive in his workplace .he is afebrile anicteric , tachypnoiec , drowsy and blue all over with
clear lung field and hyperdynamic cardiovascular findings.his ABG with 100 % oxygen after intubation was
pH = 7.30
pO2 = 80 mm of Hg
pCO2 = 30 mm of Hg
SaO2 = 50 %
what is the most likely diagnosis
a. methhemoglobinemia
b. adult respiratory distress
c. carbon monoxide poisoning
d. organophosphorous poisoning
answer: c . carbon monoxide poisoning . ( can anyone explain this - please post in comments ) .
63q: consider the following statements . life threatening features of acute severe asthma in children include
1. altered sensorium
2. pulsus paradoxus
3. audible wheeze in both inspiration and expiration
4. oxygen saturation 92-95 %
a. 1 is only correct
b. 1 and 2 are correct
c. 2 and 4 are correct
d. all are correct
answer: b . altered sensorium and pulsus paradoxus .
64q: poor prognostic indicators in acute severe asthma include all of the following except ?
a. pulsus paradoxus
b. hypocarbia
c. use of accessory muscles of respiration
d. PEFR less than 20 % of previous value
answer: b . hypocarbia .
65q: consider the following statements :
early onset extrinsic episodic asthma is characterised by ?
1. family history of eczema or rhinitis
2. development of an early and late asthamtic reaction mediated by mast cells
3. T lymphocytes that release cytokine like interleukin-4
which of the above statements are ture
a. 1,2 and 3 are true
b. 1 and 2 are true
c. 2 and 3 are true
d. 1 and 3 are true
answer: a . all the three statements are true .
2 comments:
Carboxyhemoglobin (Hbco) is the chemical combination of hemoglobin with carbon monoxide.Hb affinity for co is more than 200 times greater than it for oxygen.Thus even extremely low concentrations of carbonmonoxide quickly displace oxygen from hb leading to very low sao2.
Carboxyhemoglobin (Hbco) is the chemical combination of hemoglobin with carbon monoxide.Hb affinity for co is more than 200 times greater than it for oxygen.Thus even extremely low concentrations of carbonmonoxide quickly displace oxygen from hb leading to very low sao2.
Post a Comment