Description : In human being, haemorrhage causes a. venous constriction b. decreased blood flow to the skin c. a fall in cardiac output d. splenic contraction
Last Answer : splenic contraction
Description : Nitroglycerin, either directly or through reflexes, results in which one of the following effects (a) Decreased heart rate (b) Decreased venous capacitance (c) Increased afterload (d) Increased cardiac force (e) Increased diastolic intramyocardial fiber tension
Last Answer : Ans: D
Description : Which of the following statement(s) is/are true concerning oxygen delivery? a. The amount of oxygen delivered to peripheral tissues is dependent upon the oxygen content in arterial blood and cardiac ... O2/dL d. Normal systemic oxygen delivery for a typical adult is approximately 1000 cc/min
Last Answer : Answer: a, c, d The amount of oxygen that is delivered to peripheral tissues is the product of the oxygen content in arterial blood times the cardiac output. Normally, oxygen content of arterial blood is ... of venous blood is 16 cc/dL. Hence, the normal arterial-venous difference is 4 cc O2/dL
Description : Atropine overdose may cause which one of the following (a) Gastrointestinal smooth muscle crampine (b) Increased cardiac rate (c) Increased gastric secretion (d) Pupillary constriction (e) Urinary frequency
Last Answer : Ans: B
Description : The most likely mechanism of antihypertensive action of thiazide diuretics in the long-term is: A. Reduction of circulating blood volume B. Reduction in cardiac output C. Decreased sympathetic tone D. Reduction in total peripheral vascular resistance and improved compliance of resistance vessels
Last Answer : D. Reduction in total peripheral vascular resistance and improved compliance of resistance vessels
Description : All of the following contribute to the antihypertensive action of propranolol except: A. Direct vasodilatation B. Decreased renin release from kidney C. Adaptation of blood vessels to reduced cardiac output D. Less noradrenaline release from sympathetic nerve endings
Last Answer : A. Direct vasodilatation
Description : Which of the following plays an important role in edema formation? C A. Arteriolar dilatation B. Decreased venous flow C. All of the above D. None of these
Last Answer : All of the above
Description : Which of the following statement(s) is/are true concerning the results of a National Institute of Health Consensus Conference on venous thrombosis and low-dose heparin prophylaxis? a. The odds of ... treated with low-dose heparin d. There was no difference in the incidence of bleeding complications
Last Answer : Answer: a, b, c In a metaanalysis of 70 randomized trials in 16,000 patients comparing low-dose heparin prophylaxis with standard therapy, the odds of developing deep venous thrombosis ... Similarly, the effectiveness of prophylaxis was not influenced by either two or three times daily dosage
Description : Which of the following statement(s) is/are correct concerning the cardiovascular response to shock? a. Changes in cardiac contractile function shift the Frank Starling curve up and down b. ... d. The total circulating blood volume is equally split between the arterial and venous system
Last Answer : Answer: a Central in the general cardiovascular response to shock is the action of the heart itself. The principle determinants of cardiac function in the normal heart are the volume of blood ... Blood flow to the skin is sacrificed early, followed by that to the kidneys and splanchnic viscera
Description : Intravenous furosemide promptly mitigates dyspnoea in acute left ventricular failure by: A. Producing bronchodilatation B. Causing rapid diuresis and reducing circulating blood volume C. Increasing venous capacitance and reducing cardiac preload. D. Stimulating left ventricular contractility
Last Answer : C. Increasing venous capacitance and reducing cardiac preload.
Description : Hyperventilation causes: a. an alkaline urine b. a fall in the plasma bicarbonate concentration c. increased cardiac output d. all above
Last Answer : all above
Description : With regard to cerebral autoregulation: a. cerebral blood flow is constant over a diastolic blood pressure of 60 to 140 mmHg b. autoregulation is lost during the acute phase of subarachnoid haemorrhage c. it is impaired in hypercapnia d. it is impaired in hypoxia
Last Answer : it is impaired in hypoxia
Description : Increased intracranial pressure causes: a. sixth nerve palsy b. cupping of the optic disc c. absent venous pulsation d. increased cerebral blood flow
Last Answer : absent venous pulsation
Description : Invasive hemodynamic monitoring using a Swan-Gantz catheter is essential in the optimal management of patients in shock or those suffering post-shock sequelae. Which of the following physiologic ... , increased SVR d. Neurogenic shock: Decreased PCWP, increased cardiac output, decreased SVR
Last Answer : Answer: a, c
Description : Acute renal failure (ARF) may be caused by all of the following except (a) Acute tubular necrosis (ATN) due to drug therapy (e.g., aminoglycosides, contrast media) (b) Severe hypotension ... (c) Decreased cardiac output, as from congestive heart failure (d) Hemolysis, myoglobinuria (e) Hyperkalemia
Last Answer : Ans: E
Description : All of the following statements about hemorrhagic shock are true except: A. Following hemorrhagic shock, there is an initial interstitial fluid volume contraction. B. Dopamine, or a similar inotropic ... shock, a narrowed pulse pressure is commonly seen before a fall in systolic blood pressure.
Last Answer : Answer: BC DISCUSSION: Hemorrhagic shock is associated with a contraction of the interstitial fluid compartment because of precapillary vasoconstriction and reabsorption of interstitial fluid ... definitive evidence that such solutions are better than standard crystalloid solutions is lacking
Description : Which vasodilator is most suitable for a patient of CHF who is symptomatic even at rest and has a central venous pressure of 25 mm Hg and cardiac index 1.8 L/min/m2 : A. Glyceryl trinitrate B. Enalapril C. Hydralazine D. Nifedipine
Last Answer : B. Enalapril
Description : The cerebral blood flow: a. is increased by hypercapnia b. is increased by hypoxia c. accounts for 15% of the total cardiac output d. all above
Description : Which of the following vasoactive drugs used in treating shock results in reduced preload and afterload, reducing oxygen demand of the heart? a) Nitroprusside (Nipride) A disadvantage ... increases cardiac output. d) Methoxamine (Vasoxyl) Methoxamine increases blood pressure by vasoconstriction.
Last Answer : a) Nitroprusside (Nipride) A disadvantage of nitroprusside is that it causes hypotension.
Description : The following factor is not involved in the causation of hypotension due to spinal anaesthesia: A. Histamine release B. Reduced sympathetic vasoconstrictor tone C. Decreased venous return from the lower limbs D. Bradycardia
Last Answer : A. Histamine release
Description : The adiabatic throttling process of a perfect gas is one of constant enthalpy (A) In which there is a temperature drop (B) Which is exemplified by a non-steady flow expansion (C) Which can be performed in a pipe with a constriction (D) In which there is an increase in temperature
Last Answer : (C) Which can be performed in a pipe with a constriction
Description : The fall in blood pressure caused by d-tubocurarine is due to: A. Reduced venous return B. Ganglionic blockade C. Histamine release D. All of the above
Last Answer : D. All of the above
Description : Which of the following hormone causes vaso-constriction `:-`
Last Answer : Which of the following hormone causes vaso-constriction `:-` A. ANF B. Aldosterone C. ADH D. ACTH
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 : Which of the following body substances causes increased gastric secretion, dilation of capillaries, and constriction of the bronchial smooth muscle? a) Histamine When cells are damaged, ... Prostaglandin Prostaglandins are unsaturated fatty acids that have a wide assortment of biologic activity.
Last Answer : a) Histamine When cells are damaged, histamine is released.
Description : The deficiency of which one of the following vitamins in the ration of Poultry birds increases the Coagulation time of blood and creates the danger of haemorrhage ? (A) Vitamin A (B) Vitamin B 1 (C) Vitamin K (D) Vitamin D (E) Vitamin B 6
Last Answer : (D) Vitamin D
Description : The standard management oral anticoagulant therapy for chronic treatment of venous thromboembolism is with the drug warfarin. Which of the following statement(s) is/are true concerning the administration ... warfarin be continued for at least one year after initial episode of deep venous thrombosis
Last Answer : Answer: a, b Warfarin interferes with the vitamin K dependent clotting factors II, VII, IX and X, protein C, and protein S. An important complication of warfarin is skin ... the benefit from anticoagulant therapy and thus is the basis for discontinuing warfarin administration at this time
Description : In the head and neck: a. the lymph from the upper lid drains to the parotid and submandibular lymph nodes b. the facial nerve comes from the first pharyngeal arch c. branches of the ... e. an unilateral cleft lip is a failure of the maxillary process to fuse with the medial nasal process
Last Answer : branches of the ophthalmic division of the trigeminal nerve supply the skin of the scalp as far backward as the vertex
Description : Concerning the mixture of arterial with venous blood what is the difference between the human fetal circulation and the adult circulation?
Last Answer : In the human fetal circulation there are two communications between arterial and venous blood characterizing an incomplete circulation. One of them is the oval foramen, an opening between the right and the left ... close a few days after birth and so they are not present in the adult heart.
Description : Is studies of the human body, what is used to describ a blood-filled sac formed by an outpouching in an arterial or venous wall?
Last Answer : ANSWER: ANEURYSM
Description : In a patient given a cardiac glycoside, important effects of the drug on the heart include which of the following? (a) Decreased atrioventricular conduction velocity (b) Decreased ejection time (c) Increased ectopic automaticity (d) Increased ectopic automaticity (e) All of the above
Description : The antianginal effect of propranolol may be attributed to which one of the following (a) Block of exercise – induced tachycardia (b) Decreased end – diastolic ventricular volume (c) Dilation of consticted coronary vessels (d) Increased cardiac force (e) Increased resting heart rate
Last Answer : Ans: A
Description : Which of the following will result from blockade of H2 receptors? (a) Decreased camp in cardiac muscle (b) Increased camp in cardiac muscle (c) Decreased IP3 in gastric mucosa (d) Increased IP3 in gastric mucosa (e) Increased IP3 in smooth muscle
Description : The effect of noradrenaline on the heart include: a. tachycardiac b. increased duration of the cardiac action potential c. decreased potassium conductance of the membranes of pacemaker cells d. increased strength of cardiac contraction
Last Answer : increased strength of cardiac contraction
Description : Which of the following patient behaviors, if observed by the nurse, would indicate that the cardiac patient's level of anxiety has decreased? a) Answers questions regarding status with ... in support groups. Participation in support groups indicates some degree of comfort with prognosis.
Last Answer : a) Answers questions regarding status with no problem. Generally, when anxiety begins to increase, the patient will be less likely to want to discuss prognosis.
Description : Von Willebrand disease is, A. Haemophilic disease B. Bacterial Endocarditis C. Congenital cardiac disease D. Rheumatic fever Decreased PTT, bleeding time prolonged, deficiency factor VIII
Last Answer : A. Haemophilic disease
Description : In the intact animal H2 receptor antagonists potentiate the following action of histamine: A. Cardiac stimulation B. Fall in blood pressure C. Uterine relaxation D. Bronchospasm
Last Answer : D. Bronchospasm
Description : Actions of bradykinin include the following except: A. Fall in blood pressure B. Cardiac depression C. Increase in capillary permeability D. Bronchoconstriction
Last Answer : B. Cardiac depression
Description : Morphine induced fall in blood pressure involves the following factors except: A. Direct cardiac depression B. Direct reduction of vascular tone C. Vasomotor centre depression D. Histamine release
Last Answer : A. Direct cardiac depression
Description : Which of the following statements(s) is/are true concerning human energy requirement? a. In normal subjects, less than 5% of basal energy requirement is spent on cardiac output and the ... d. Similar increases in energy expenditures are associated with elective surgery and trauma or thermal injury
Last Answer : Answer: a, c Basal energy requirements are measured with the subject at rest when no external work is being done; the energy is used mainly for transport and synthetic work within cells. A ... average-sized adult who sustains a major burn rarely may require more than 3500 kcal/day for maintenance
Description : Assertion` :` Cardiac output is the volume of blood pumped out by each ventricle per minute. Reason `:` Ther cardiac output of an athlete will be much
Last Answer : Assertion` :` Cardiac output is the volume of blood pumped out by each ventricle per minute. Reason `: ... . D. If both Assertion & Reason are false.
Description : Cardiac output is blood
Last Answer : Cardiac output is blood A. Received by heart per minute B. Pumped by ventricles per sec C. Pumped ... per minute D. Pumped by left ventricle per hour
Last Answer : Cardiac output is blood A. Received by heart per minute B. Pumped by ventricle per sec C. Pumpled ... per minute D. Pumped by left ventricle per hour
Description : Which of the following statement(s) is/are true concerning the relationship between cardiac function and effective blood volume? a. A pulmonary capillary wedge pressure of 5-10 rules out ... sole purpose of a pulmonary artery catheter is to measure pulmonary artery pressure and cardiac output
Last Answer : Answer: b, c Although physical findings are often adequate to establish a diagnosis and institute management of cardiac failure, direct measurement of filling pressures of the right heart ( ... blood volume is normal, filling pressures are normal, and total body extracellular fluid is excessive
Description : The major common determinant of myocardial oxygen consumption is (a) Blood volume (b) Cardiac output (c) Diastolic blood pressure (d) Heart rate (e) Myocardial fiber tension
Description : In the autonomic regulation of blood pressure (a) Cardiac output is maintained constant at the expense of other hemodynamic variables (b) Elevation of blood pressure results in elevated ... the sensitivity of the sensory baroreceptor nerve endings might cause an increase in sympathetic discharge
Description : What would be the heart rate of a person if the cardiac output is 5 L, blood volume in the ventricles at the end of diastole is 100 mL and at the end of ventricular systole is 50 mL ? (a) 125 beats per minute (b) 50 beats per minute (c) 75 beats per minute (d) 100 beats per minute
Last Answer : (d) 100 beats per minute
Description : Which of the following terms indicates the amount of blood pumped out of the ventricle with each contraction of the heart? a) Stroke volume Stroke volume is the amount of blood pumped out ( ... d) Preload Preload is the pressure created by a volume of blood within a ventricle before contraction.
Last Answer : a) Stroke volume Stroke volume is the amount of blood pumped out (ejected) with each contraction of the heart (heart beat). Stroke volume times heart rate equals cardiac output.
Description : Which of the following terms describes the amount of blood ejected per heartbeat? a) Stroke volume Stroke volume is determined by preload, afterload, and contractility. b) Cardiac output Cardiac output ... must overcome to eject blood during systole and is one of the determinants of stroke volume.
Last Answer : a) Stroke volume Stroke volume is determined by preload, afterload, and contractility.