The short acting dihydropyridine preparations can
aggravate myocardial ischaemia by invoking:
A. Coronary vasospasm
B. Thrombus formation
C. Vagal activation
D. Reflex sympathetic discharge to the hear

1 Answer

Answer :

D. Reflex sympathetic discharge to the heart

Related questions

Description : Low dose subcutaneous heparin therapy is indicated for: A. Prevention of leg vein thrombosis in elderly patients undergoing abdominal surgery B. Ischaemic stroke C. Patients undergoing neurosurgery D. Prevention of extention of coronary artery thrombus in acute myocardial infarction

Last Answer : A. Prevention of leg vein thrombosis in eld

Description : Use of anticoagulants in acute myocardial infarction affords the following benefit(s): A. Reduces short-term mortality B. Prevents thrombus extension and subsequent attack C. Prevents venous thromboembolism D. All of the above

Last Answer : C. Prevents venous thromboembolism

Description : The characteristic feature(s) of dihydropyridine calcium channel blockers is/are: A. They have minimal negative inotropic action on the heart B. They have no effect on A-V conduction C. They do not affect the activation-inactivation kinetics of the calcium channels D. All of the above

Last Answer : D. All of the above

Description : A drug which preferentially dilates autoregulatory coronary arterioles with little effect on large conducting vessels is likely to: A. Evoke coronary steal phenomenon B. Mitigate classical angina but not ... . Decrease total coronary blood flow in healthy subjects D. Avert ECG changes of ischaemia

Last Answer : A. Evoke coronary steal phenomenon

Description : The most important risk in the use of sumatriptan for treatment of migraine is: A. Precipitation of seizures B. Precipitation of psychosis C. Development of hypertension D. Coronary vasospasm

Last Answer : D. Coronary vasospasm

Description : Select the drug that may improve myocardial tolerance to ischaemia and reduce anginal attacks without altering heart rate, blood pressure or myocardial O2 consumption: A. Trimetazidine B. Nicorandil C. Dipyridamole D. Nicotinic acid

Last Answer : A. Trimetazidine

Description : Digitalis slows the heart in congestive heart failure by: A. Increasing vagal tone B. Decreasing sympathetic overactivity C. Direct depression of sinoatrial node D. All of the above

Last Answer : D. All of the above

Description : The usual cardiovascular effect of levodopa is: A. Bradycardia due to increased vagal tone B. Rise in blood pressure due to increased noradrenaline content of adrenergic nerve endings C. Fall in blood pressure due to decrease in sympathetic tone D. Both ‘A’ and ‘B’ are correct

Last Answer : C. Fall in blood pressure due to decrease in sympathetic tone

Description : Use of glycopyrrolate in preanaesthetic medication serves the following purposes except: A. Prevents respiratory secretions during anaesthesia B. Guards against reflex vagal bradycardia during ... Produces amnesia for perioperative events D. Reduces the probability of occurrence of laryngospasm

Last Answer : C. Produces amnesia for perioperative events

Description : Which of the following medications are used to reverse the effects of heparin? a) Protamine sulfate Protamine sulfate is known as the antagonist to heparin. b) Streptokinase Streptokinase is a ... placement. d) Aspirin The antiplatelet effect of aspirin does not reverse the effects of heparin.

Last Answer : a) Protamine sulfate Protamine sulfate is known as the antagonist to heparin.

Description : Regular low-to-moderate alcohol consumption is associated with: A. Lower incidence of coronary artery disease B. Myocardial depression C. Physical dependence D. Wernicke's encephalopathy

Last Answer : A. Lower incidence of coronary artery disease

Description : Shortacting nifedipine formulation is not recommended now for treatment of hypertension because: A. It tends to increase heart rate and cardiac work B. It invokes pronounced reflex sympathetic discharges C. It can impair haemodynamics in patients with diastolic dysfunction D. All of the above

Last Answer : D. All of the above

Description : Match the column - I with column - II. Column-I Column-II (A) P-wave (i) Depolarisation of ventricles (B) QRS complex (ii) Repolarisation of ventricles (C) T-wave (iii) Coronary ischaemia (D) Reduction in the size of T- wave (iv) ... ) (i) (ii) (iii) (c) (iv) (i) (ii) (v) (d) (ii) (i) (v) (iii)

Last Answer : (b) (iv) (i) (ii) (iii)

Description : Choose the correct statement about sumatriptan: A. It activates serotonergic neurones in raphe nuclei B. It tends to suppress both pain and vomiting in migraine C. It does not carry risk of precipitating coronary vasospasm D. It is combined with ergotamine for treatment of severe migraine

Last Answer : B. It tends to suppress both pain and vomiting in migraine

Description : The general principles in the use of hypnotics include the following except: A. A hypnotic may be used intermittently for upto 2-3 weeks in short-term insomnia due to emotional stress B ... sleep apnoea D. A hypnotic with slow elimination is preferred in patients with early morning awakening

Last Answer : B. In patients with chronic insomnia a hypnotic should be used regularl

Description : The nurse teaches the patient with peripheral vascular disease to refrain from smoking because nicotine causes a) vasospasm. Nicotine causes vasospasm and can thereby dramatically reduce circulation to the ... the bronchial tree, causing coughing. d) diuresis. Nicotine does not cause diuresis.

Last Answer : a) vasospasm. Nicotine causes vasospasm and can thereby dramatically reduce circulation to the extremities.

Description : The following calcium channel blocker is specifically indicated to counteract cerebral vasospasm and neurological sequelae following subarachnoid haemorrhage: A. Lacidipine B. Nimodipine C. Nicardipine D. Nitrendipine

Last Answer : B. Nimodipine

Description : Extract of the following plant has platelet activating factor (PAF) antagonistic activity and is claimed to benefit cognitive disorders due to cerebral ischaemia: A. Ginkgo biloba B. Claviceps purpurea C. Amanita muscaria D. Artemisia annua (p. 440) 33.12 3 3 . 1 2 A Aim4aii

Last Answer : A. Ginkgo biloba

Description : he following is true of nifedipine except: A. It can aggravate urine voiding difficulty in elderly males with prostatic hypertrophy B. It promotes Na+ retention by a renal tubular action to ... release from pancreas D. At high doses it can paradoxically increase the frequency of angina pectori

Last Answer : B. It promotes Na+ retention by a renal tubular action to cause ankle oedema as side effect

Description : Choose the antiarrhythmic drug which prolongs action potential, can aggravate atrioventricular block but not heart failure, and has broad spectrum utility in acute as well as chronic, and ventricular as well as supraventricular arrhythmias: A. Quinidine B. Amiodarone C. Mexiletine D. Diltiazem

Last Answer : B. Amiodarone

Description : The following is true of raloxifene except: A. It acts as an estrogen agonist in bone B. It exerts estrogen antagonistic action on endometrium C. It increases risk of developing breast cancer D. It can induce/aggravate menopausal hot flushes

Last Answer : C. It has additional androgenic acitivity

Description : Methysergide has lost popularity as a prophylactic drug for migraine because of its: A. Poor efficacy B. Potential to cause visceral fibrosis C. Oxytocic action D. Potential to aggravate ischaemic heart disease

Last Answer : B. Potential to cause visceral fibrosis

Description : Oxytocin is essential for: A. Initiation of labour B. Formation of milk C. Milk ejection reflex D. Both ‘A’ and ‘C’ are correct

Last Answer : C. Milk ejection reflex

Description : Ondansetron blocks emetogenic impulses at the following site(s): A. Vagal afferents in intestines B. Nucleus tractus solitarius C. Chemoreceptor trigger zone D. All of the above

Last Answer : D. All of the above

Description : n a failing heart therapeutic dose of digoxin has no effect on the following parameter: A. Cardiac output B. Heart rate C. Tone of ventricular fibres D. Cardiac vagal tone

Last Answer : C. Tone of ventricular fibres

Description : Actions of morphine include the following except: A. Vagal stimulation B. Miosis C. Antiemetic D. Postural hypotensio

Last Answer : C. Antiemetic

Description : The mechanisms involved in the causation of dangerous cardiac arrhythmias due to overdose of tricyclic antidepressants include the following except: A. Intraventricular conduction block B. Potentiation of noradrenaline C. Antagonism of acetylcholine D. Increased vagal tone

Last Answer : D. Increased vagal tone

Description : Insulin release from pancreatic β cells is augmented by the following except: A. Ketone bodies B. Glucagon C. Vagal stimulation D. Alfa adrenergic agonists

Last Answer : D. Alfa adrenergic agonist

Description : Initial bradycardia caused by intramuscular injection of atropine is believed to be caused by: A. Stimulation of medullary vagal centre B. Stimulation of vagal ganglia C. Blockade of M2 receptors on SA nodal cells D. Blockade of muscarinic autoreceptors on vagal nerve endings

Last Answer : D. Blockade of muscarinic autoreceptors on vagal nerve endings

Description : Initial bradycardia caused by intramuscular injection of atropine is believed to be caused by: A. Stimulation of medullary vagal centre B. Stimulation of vagal ganglia C. Blockade of M2 receptors on SA nodal cells D. Blockade of muscarinic autoreceptors on vagal nerve endings

Last Answer : D. Blockade of muscarinic autoreceptors on vagal nerve endings

Description : Choose the incorrect statement from the following (a) Sympathetic system increases rate of SA node (b) Sympathetic system causes constriction of coronary arteries (c) Sympathetic system causes increased motility of GIT smooth muscles (d) Sympathetic system causes constriction of sphincter in GIT

Last Answer : Ans: C

Description : As thrombin generation proceeds, the body has natural anticoagulant systems opposing further thrombus formation. Natural anticoagulants include: a. Tissue plasminogen activator (TPA) b. Antithrombin III c. Activated protein C d. Heparin cofactor II

Last Answer : Answer: b, c, d Just as thrombin generation is the key to coagulation, antithrombin III is the most central anticoagulant proteins. This glycoprotein binds to thrombin, preventing its removal of ... in the body. Therefore, TPA is part of the fibrinolytic system rather than a natural anticoagulant

Description : Assertion `:` Myocardial infarction oftern results from a sudden decrease in coronary blood supply resulting in decreased oxygen supply. Reason `:` Th

Last Answer : Assertion `:` Myocardial infarction oftern results from a sudden decrease in coronary blood supply ... If both Assertion & Reason are false.

Description : A 68-year-old male who underwent a repair of an abdominal aortic aneurysm 5 days ago, develops tachycardia, tachypnea, hypotension with cool, pale, mottled cyanotic extremities. He ... use of moderate doses of inotropic agents e. Afterload reduction with nitroprusside is absolutely contraindicated

Last Answer : Answer: a, b, d Intrinsic cardiogenic shock results from failure of the heart as an effective pump. Coronary artery disease is the most common cause of myocardial ... hemodynamic monitoring. Infusion of afterload-reducing agents can be administered in conjunction with inotropic support

Description : Are there any Reflex Sympathetic Dystrophy support groups/charities in Atlanta?

Last Answer : You might try checking here.

Description : When the patient who has experienced trauma to an extremity complains of severe burning pain, vasomotor changes, and muscles spasms in the injured extremity, the nurse ... heterotrophic ossification. Heterotrophic ossification causes muscular pain and limited muscular contraction and movement.

Last Answer : a) reflex sympathetic dystrophy syndrome. RSD is frequently chronic and occurs most often in women.

Description : Which controls reflex action? Options: A) Sympathetic nervous system B) Central nervous system C) Parasympathetic nervous system D) Sensory nerves

Last Answer : C) Parasympathetic nervous system

Description : Antacid combinations of magnesium and aluminium salts are superior to single component preparations because: A. They have rapid as well as sustained acid neutralizing action B. They are less likely to affect gastric emptying C. They are less likely to alter bowel movement D. All of the above

Last Answer : D. All of the above

Description : Choose the correct statement about severity of side effects to oral iron medication: A. Ferrous salts are better tolerated than ferric salts B. Complex organic salts of iron are better ... better tolerated than tablets D. Tolerability depends on the quantity of elemental iron in the medication

Last Answer : D. Tolerability depends on the quantity of elemental iron in the medication

Description : CHOOSE THE MOST APPROPRIATE RESPONSE 41.1 Absorption of oral iron preparations can be facilitated by coadministering: A. Antacids B. Tetracyclines C. Phosphates D. Ascorbic acid

Last Answer : D. Ascorbic acid

Description : The monocomponent insulin preparations differ from the conventional preparations in the following respects except: A. They are less allergenic B. They cause less hypoglycaemic reactions C. They cause less lipodystrophy D. They are less liable to induce insulin resistance

Last Answer : B. They cause less hypoglycaemic reactions

Description : he monocomponent insulin preparations differ from the conventional preparations in the following respects except: A. They are less allergenic B. They cause less hypoglycaemic reactions C. They cause less lipodystrophy D. They are less liable to induce insulin resistance

Last Answer : B. They cause less hypoglycaemic reactions

Description : Choose the correct statement about topical NSAID preparations: A. They produce high drug levels in the blood by avoiding hepatic first pass metabolism B. They produce high drug levels in ... a strong placebo effect D. Interindividual variability in clinical response to these preparations is minimal

Last Answer : C. They elicit symptomatic relief in soft tissue rheumatism mainly by a strong placebo effect

Description : Full activation of the sympathetic nervous system, as in maximal exercise, can produce all of the following responses except (a) Bronchial relaxation (b) Decreases intestinal motility (c) Increased renal blood flow (d) Mydriasis (e) Increased heart rate (tachycardia)

Last Answer : Ans: C

Description : The following is a very potent and short acting benzodiazepine whose use as hypnotic has been noted to cause psychiatric disturbances in some cases: A. Flurazepam B. Nitrazepam C. Temazepam D. Triazolam

Last Answer : D. Triazolam

Description : n a 50-year-old male without any other coronary artery disease risk factor, hypocholesterolemic drugs are considered necessary when the serum LDLcholesterol level is higher than: A. 130 mg/dl B. 160 mg/dl C. 190 mg/dl D. 240 mg/d

Last Answer : C. 190 mg/dl

Description : Specific drug therapy to lower serum triglycerides (TG) in a subject with normal LDL-cholesterol level is indicated: A. In all subjects with serum TG> 150 mg/dl B. In subjects with existing coronary artery disease and serum TG ... < 40 mg/dl and serum TG > 150 mg/dl D. Both 'B' and 'C' are correct

Last Answer : D. Both 'B' and 'C' are correct

Description : A patient with coronary artery disease has raised serum triglyceride level (500 mg/dl) but normal total cholesterol level (150 mg/dl). Which hypolipidemic drug should be prescribed: A. Probucol B. Gemfibrozil C. Cholestyramine D. Lovastatin

Last Answer : B. Gemfibrozil