Mcq Subject: Unknown
A 48-year-old patient with signs and symptoms of congestive hea failure presented to the emergency depament. Following stabilization, he was admitted and staed on an inotropic drug 4 months into therapy, the patient staed complaining of yellow scotomas and xanthopsia. An ECG was also conducted. What is the mechanism of action of the drug that was staed?
A. B1 agonist
B. PDE3 inhibitor
C. Inhibition of Na-K ATPase pump
D. B2 antagonist
View DescriptionThe only reliable means of diagnosing acute cardiac rejection before substantial myocardial damage has occurred is
A. Echocardiography
B. ECG
C. Endomyocardial biopsy
D. Ultrasound
View DescriptionWhich of the following can cause Teratogenecity.
A. Vit.C
B. Vit.E
C. Vit.A
D. Vit.D
View DescriptionLaurence Moon Biedle syndrome -Associated with –
A. Polydactyly
B. Mental retardation
C. Retinitis pigmentosa
D. All of above
View DescriptionAll of the following paranasal sinuses are present at birth EXCEPT:
A. Maxillary sinus
B. Ethmoid sinus
C. Sphenoid sinus
D. None
View DescriptionIn early pregnancy, the doubling time of the concentration of human chorionic gonadotropin in plasma in-
A. 1 day
B. 2 days
C. 3 days
D. 5 Days
View DescriptionBullous pemphigoidis characterized by
A. Blisters coming on urticarial skin
B. A positive Nikolsky sign
C. Easily rupturing blisters
D. Acantholysis
View DescriptionTwo carbon atoms leave in the form of CO2 in the TCA cycle are derived from –
A. Oxaloacetate
B. Acetyl CoA
C. Succinyl CoA
D. fumarate
View DescriptionA 13 years old child presents with a 3-year history of gradual swelling of the maxilla with medial displacement of turbinates with mild proptosis. What is the most likely diagnosis:
A. Olfactory neuroblastoma
B. Angiofibroma
C. Carcinoma of maxilla
D. Fibrous dysplasia
View DescriptionA 40-year-old man presented with history of episodic palpitations and headaches. The patient was fine until 1 year back when the patient staed experiencing spells of rapid heabeat. These became more severe and were eventually accompanied by throbbing headaches and drenching sweats. Physical examination revealed a blood pressure of 154/94 mm Hg and hea rate of 86 bpm. During the physical examination, palpation of the abdomen elicited a sudden and typical episode, with a rise in blood pressure to 214/128 mm Hg, hea rate to 128 bpm, profuse sweating, and facial pallor. This was accompanied by severe headache. MRI and PET SCAN is given below. Which of the following is true regarding the patient’s condition?
A. 10% of these tumours are unilateral
B. 24-hour urinary excretion of VMA is the most sensitive test to diagnose this condition.
C. Histopathologically, the tumor consists of clusters of polygonal or spindle shaped chromaffin cells suppoed by sustentacular cells in a nest like pattern.
D. Phenoxybenzamine is a reversible alpha blocker, hence used in the challenge test to diagnose this condition.
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