A) right bundle branch has dual blood supply from RCA and LAD B) left anterior fascicle has dual blood supply from LAD and RCA C) left posterior fascicle has dual blood supply from LAD and RCA D) AV node is supplied by dominant coronary artery Answer (Select an option above to get the answer):
(Single Best Answer) Question 62: A 26 year old lady came with the complaints of fever with altered sensorium and reduced urine output of 1 week duration. On evaluation her hemoglobin was 7 gm/dl, platelet count of 30,000/cu.mm with peripheral smear showing schistocytes. Serum creatinine was 3 mg/dl. Prothrombin time and activated partial thromboplastin time were normal. Enzyme most likely to be deficient in this situation is ?
A) hexokinase B) pyruvate kinase C) ADAMTS 13 D) glucose-6-phosphate dehydrogenase Answer (Select an option above to get the answer):
(Single Best Answer) Question 63: Assertion: under stress myocardial oxygen delivery increases dominantly due to increased extraction of oxgen from blood
Reason: oxygen extraction is almost maximal under resting conditions
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):
(Single Best Answer) Question 64: Which of the following drug / durgs has / have the potential to precipitate decompensation in patients with chronic heart failure 1. Allopurinol 2. Rosiglitazone 3. Alpha Adrenergic blockers 4. Non steriodal anti-inflammatory drugs
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 65: Which of the following measure / measures is / are highly recommended by ACC/AHA in the treatment of patients with endstage heart failure 1. cardiac transplantation 2. intermittent infusion of positive inotrope agents 3. left ventricular assist device in patients expected to survive for less than a year with medical therapy 4. mitral valve repair for severe secondary mitral regurgitation
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 66: Assertion: during percutaneous coronary intervention smaller ST segment changes are noticed in balloon inflations subsequent to initial inflation
Reason: ischemic preconditioning is the proposed mechanism for cardiac protection
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) complete RBBB B) WPW syndrome C) complete LBBB D) electronically paced ventricular rhythm Answer (Select an option above to get the answer):
(Single Best Answer) Question 68: A patient s serological report reveals HBsAg +ve, HBeAg Negative, Anti HBe +ve, anti HBc IgM negative, HBV DNA quantitative 19,00,000 IU/ml. The diagnosis based on serology is ?
A) chronic HBsAg carrier wild type B) chronic HBsAg carrier with acute exacerbation C) chronic HBsAg carrier with pre core mutation D) HBV related acute viral hepatitis Answer (Select an option above to get the answer):
(Single Best Answer) Question 69: Which of the following criteria is most likely to affect the generalizability of the results of a clinical trial to patients seen in routine practice ?
A) Enrollment criteria B) Power of the study C) Selection bias D) Randomisation Strategy Answer (Select an option above to get the answer):
A) squamous cell carcinoma B) neuroendocrine histology C) well differentiated adenocarcinoma D) poorly differentiated adenocarcinoma Answer (Select an option above to get the answer):