Choose the pathology, where is observed shortening of PQ interval in ECG, increasing of cardiac contractability in per minute: O a. atrioventricular block • b. ventricular fibrillation Oc. Klerk-Levi Kristesko syndrome O d. sinoauricular block e. Morgan-Adams-Stoks syndrome

Q: Within the T-P interval of the EKG... a. The 2nd heart sound is heard b. the semilunar valves are…

A: a. The 2nd heart sound is heard

Q: In the following graph, curve (line) N represents a vascular function curve (venous return curve) in…

A: Introduction :- Venous return is the flow of blood from the periphery back to the right atrium, and…

Q: Cardiac output cannot increase indefinitely because (a) available filling time becomes shorter as…

A: The circulatory system is a blood vessels network that delivers blood to body's every part. Blood…

Q: An elderly man presents to the emergency department with chest pain. He has a history of stable…

A: Unstable angina is also called Acute Coronary Insufficiency or Pre infarction angina. This usually…

Q: Which structure is labelled "H' questions. Aorta Black arrows indicate direction of blood flow Blue…

A: H   =   Cardiac muscle   A = superior Vena Cava B=  Aorta C  = Right pulmonary artery        ,…

Q: Left ventricular output is generally the same as right ventricular output. If right ventricular…

A: On an average, 70 ml of blood is pumped every beat (stroke volume) and about 5000 ml every minute…

Q: In a healthy young adult, what happens to cardiacoutput when heart rate increases above 160 bpm?a.…

A: Cardiac output is also known as heart output. It describes the amount of blood being pumped by the…

Q: ulmonary circulation differs from systemic circulation in that the______.   A blood pressure in…

A: Pulmonary circulation moves blood between the heart and the lungs. It transports deoxygenated blood…

Q: An area of dead myocardial tissue is called: A) an infarct B) stenosis C) an induration D)…

A: Answer is A.) an infarct.

Q: nodal delay a. maintains cardiac output by allowing enough ventricular filling. b. prevents…

A: The AV node is a highly specialized conducting tissue that slows the impulse conduction considerably…

Q: The patient's ECG indicates that _____.   A action potentials are passing from his atria into his…

A: Electrocardiography -- The process by which electrocardiogram is done defined as electrocardiography…

Q: At the time point indicated on the ECG ____.   A blood would be flowing from the ventricles into…

A: An electrocardiogram can be defined as the type of test in which the heart's electrical activity is…

Q: 23333 The aortic valve opens at which of the following lettered points on the ventricular volume…

A: Aortic valve is present between left ventricle and aorta.  Aortic valve opens during left…

Q: 0.2 0.4 0.8 0.6 In the ECG above, which portion of the graph corresponds to the electrical activity…

A: ECG - talks about electrical property not about functional properties of the heart. An instrument to…

Q: Cardiac output can decrease by .. a. Increasing pressure in veins. b. Drugs with positive inotropic…

A: Introduction:- Cardiac output is defined as the blood ejected from the heart per minute. Cardiac…

Q: Answer question from image

A: Cardiac catheterization is performed to evaluate heart function, the presence of heart disease, and…

Q: An increase in mean arterial pressure can result froma. an increase in peripheral resistance.b. an…

A: Mean arterial pressure is defined as the average arterial pressure in one cardiac cycle, which…

Q: Which point on the PV loop corresponds to the opening and closing, respectively of the aortic valve?…

A: Introduction :  PV loop derived from pressure and volume data found from cardiac cycle. If left…

Q: Stroke volume is thea. amount of blood pumped by the heart per minute.b. difference between…

A: End-diastolic volume refers to the quantity of blood in the left or right ventricle at the end of…

Q: ne symptom of right ventricular failure would be _____.   A difficulty breathing when lying in the…

A: The right ventricle moves deoxygenated blood from the heart back to the lungs to be resupplied with…

Q: It is generally accepted that a relatively low diastolic vascular pressure is more important than a…

A: Introduction The pressure of circulating blood against the walls of blood arteries is known as blood…

Q: Blood flows through the vessels references in the above image during:

A: Heart  It is the main blood pumping organ of the body as it is formed of Cardiac muscles. There are…

Q: During the period of isovolumic contraction: A. the AV-valves are open and the aortic & pulmonary…

A:

Q: Which of the following cardiac tissues has the most rapid conduction velocity? A)The AV node. B)…

A: Purkinje fibre situated in both ventricle myocardium

Q: During ventricular diastole, pressure in the ventricles falls to ____ mm Hg, while the pressure…

A: Blood pressure is the pressure of circulating blood against the walls of blood vessels. Blood…

Q: All of the following are correct about the isovolumetric contraction, except  ____________.…

A: Isovolumetric contraction is that phase of cardiac contraction in which there is no appreciable…

Q: Which of the following forms of shock occurs as a result of expansion of the vascular compartment?…

A: A shock is a medical condition caused by a sudden drop in blood flow in the body. It can be caused…

Q: 44. Left ventricular output is generally the same as right ventricular output. If right ventricular…

A: Cardiac output is the amount of the blood pumped by the heart per minute. On an average 70…

Q: Which of the following is/are true concerning the opening and closing of the cardiac valves? A.…

A: Backward blood flow is prevented by the valves. On each end of the two ventricles are flaps that act…

Q: Even though it is trivial that Beta Blockers might have negative inotropic effect on the heart, but…

A: Beta-blockers act on the Beta 1 receptors which are located in the heart and it slows down the…

Q: The effective-refractory period present during Phase 2 of the action potential of ventricular…

A: A transient shift in membrane permeability across the cellular membrane of cardiac cells is known as…

Q: Which statement about the normal electrocardiogram (ECG) tracing is false?   A The T wave…

A: The heart is depolarized at every beat to trigger its contraction. This electrical activity is…

Q: Identify the classification when a person’s blood pressure is measured as 135/75. Group of answer…

A: When your heart beats, with every cardiac cycle it pumps blood around your body to give it the…

Q: A atria and ventricles would both be relaxed   B atria and ventricles would both be contracting…

A: ELECTROCARDIOGRAM It is a graph which records the electrical signal from the heart to check for…

Q: Which of the following would not increase Cardiac Output? A. increase blood epinephrine…

A: The amount of blood pumped by the ventricles in 1 minute is measured in terms of cardiac output…

Q: Given: Patient 2 is given a cardiovascular drug to counteract a side effect of general anesthesia,…

A: "Left ventricular pressure-volume loops" or PV loops. PV loop is generated for the left ventricle…

Q: In electrocardiography (=EKG, =ECG), what causes a P wave?______   A. atrial repolarization   B.…

A: EKG /ECG :  Electrocardiography is process of producing electrocardiogram. It is a graph of voltage…

Q: Repolarization of the ventricles typically _______.   A begins at the end of the T-wave and…

A: Electrocardiograms also called ECGs or EKGs is a simple diagnostic machine that checks the…

Q: During the isovolumetric relaxation phase of ventricular diastole: O a) Both ventricular volume and…

A: Ventricular diastole:- Is the period during which the two ventricles are relaxing from the  wringing…

Q: In the cardiac cycle tracings below, rapid ventricular filling occurs at which point on the figure?…

A: Introduction:- In cardiac cycle rapid ventricular filling occurs in atrial systole when the…