(Single Best Answer) Question 641: The term 'extensively drug-resistant tuberculosis (XDR-TB)' refers to isolates of M. tuberculosis resistant to ?
A) streptomycin, rifampicin, pyrazinamide, ethambutol and cycloserine B) isoniazid, rifampicin, flouroquinolones and at least one injectable second line drug C) pyrazinamide, isoniazid, ethambutol and atleast one injectable second line drug D) streptomycin, rifampicin, pyrazinamide, ethambutol and ethionamide Answer (Select an option above to get the answer):
Reason: the latent erythrocytic stage lasts for several years
A) Both Assertion and Reason are true, and Reason is the correct explanation for Assertion B) Both Assertion and Reason are true, and Reason is not the correct explanation for Assertion C) Assertion is true, but Reason is false D) Assertion is false, but Reason is true Answer (Select an option above to get the answer):
A) activation front is directed from epicardium to endocardium B) earliest LV activation is in apex on left side of septum C) earliest RV activation involves pulmonary conus D) posterobasal LV is last to be activated Answer (Select an option above to get the answer):
A) retrograde aortography B) MRI C) transesophageal echocardiography D) intravascular ultrasound / transthoracic echocardiography Answer (Select an option above to get the answer):
A) Transposition of great arteries (TGA) with intact Ventricular septum B) TGA with ventricular septal defect (VSD) C) TGA, VSD with left ventricular outflow tract (LVOT) obstruction D) Tetralogy of Fallot Answer (Select an option above to get the answer):
(Single Best Answer) Question 646: Which of the following combinations of lung volume abnormalities are most likely in idiopathic pulmonary fibrosis
A) decreased total lung capacity (TLC), decreased vital capacity (VC), decreased residual volume (RV), increased FEV1/FVC ratio, normal maximum inspiratory pressure (MIP) B) normal TLC, normal Residual Volume (RV), normal FEV1/FVC ratio, normal MIP C) increased TLC, decreased VC, decreased FEV1/FVC ratio D) decreased TLC, increased residual volume RV, normal FEV1/FVC ratio, decreased MIP Answer (Select an option above to get the answer):
(Single Best Answer) Question 647: A specific predictor for higher risk of sudden cardiac death in patients with idiopathic dilated cardiomyopathy (non-ischmic CMP) is ?
A) non-sustained ventricular tachycardia B) induction of polymorphic VT or VF during EP testing C) unexplained syncope D) any of the above Answer (Select an option above to get the answer):
A) pulsus paradoxus B) diastolic collapse of right ventricle on echocardiogram C) electrical alternans D) Kussmaul's sign Answer (Select an option above to get the answer):
(Single Best Answer) Question 649: In TOF severity of cyanosis depends on 1. severity of infundibular obstruction 2. amount of aortic override 3. systemic vascular resistance 4. site of VSD
A) Only 1, 2 and 3 are correct B) Only 1 and 3 are correct C) Only 2 and 4 are correct D) Only 4 is correct Answer (Select an option above to get the answer):
(Single Best Answer) Question 650: Regarding use of calcium channel blockers in management of acute coronary syndrome Assertion: they are indicated as first line drugs in the management of acute coronary syndrome
Reason: they inhibit vascular smooth muscle function and cause coronary and peripheral vasodilatation
A) Both Assertion and Reason are true, and Reason is the correct explanation for Assertion B) Both Assertion and Reason are true, and Reason is not the correct explanation for Assertion C) Assertion is true, but Reason is false D) Assertion is false, but Reason is true Answer (Select an option above to get the answer):