following statements regarding premature ventricular complexes (PVCs) are true except: a. Occasional PVCs may occur in persons without heart disease b. Bursts of two or more PVCs in a row may progress rapidly to ventricular tachycardia €. APVC that falls on or near a T wave may cause ventricular fibrillation

Q: Afterload is Select one: a. the amount cardiac output must increase during exercise. b. the…

A: The objective of the question is to identify the correct definition of the term 'afterload' in the…

Q: 17. a) Define a premature ventricular contraction (PVC). b) What are the distinguishing…

A: Arrhythmia or irregular heartbeat refers to the disorder in which the rate or rhythm of the heart is…

Q: Which of the following symptoms would be most typical of myocardial infarction? A Left sided…

A: NSTEMI is a  type of heart attack where their is a partial blockage or reduced blood flow via the…

Q: Briefly describe and explain how two cardiovascular diseases can be caused by atrial fibrillation.

A: Irregular puls of heart is one of the serious  causes of cardiovascular disease. Many cardiovescular…

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: Refer to the figure of the pressures in the cardiac cycle on the right side. Letters indicate time…

A: This Wigger's diagram is used to understand physiology of heart. It explains -  Blood pressure -…

Q: 45. Which of the following is/are true concerning the opening and closing of thecardiac valves?   A.…

A: The valves of the heart maintain undirectional flow of the blood and prevent its regurgitation in…

Q: Explain how Cardiac output is controlled and affected by the following factors: 1. the atrial and…

A: Atrial reflexes is in action when there is venous return to the heart. Baroreceptors in the superior…

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: Sketch and discuss the most important waveforms associated to the cardiac cycle and what is the…

A: A sequence of alternating contraction and relaxation of the atria and ventricles in order to pump…

Q: The delivery of blood by the left ventricle into the sorta is intermittent, whereas blood flow in…

A: Peripheral circulation refers to blood flow in smaller blood vessels such as arterioles and…

Q: You are testing a compound as cardioactive drug. You know the compound is an agonist of…

A: The sinoatrial (SA) node is known as the natural pacemaker of the heart, responsible for generating…

Q: The blood that remains in the vnicles at the nd of ejection is called the residual volume and i…

A: The heart is the primary organ responsible for pumping blood throughout the body. Congestive heart…

Q: Draw a ventricular-function curve illustrating the Frank-Starling mechanism.

A: FRANK STERLING MECHANISM : given below is the ventricular function curve The figure shows multiple…

Q: ECG

A: Absence of P waves with a flat baseline is an indication of fine atrial fibrillation.

Q: Which of the following is true about the pacemaker potential in the heart? a. Decreased K+ efflux…

A: The pacemaker potential, also known as the prepotential, is the slow, positive increase in voltage…

Q: If the pressure in the ventricles is higher than the pressure in the atria, but lower than the…

A: Heart valves open and close in response to pressure changes inside the heart chambers. the fluid…

Q: 1. You are a lead engineer in a cGMP facility that develops and delivers tissue engineering…

A: Globally, myocardial infarction (MI) is one of the leading causes of death. Loss of cardiomyocytes,…

Q: 1. Explain the Frank-Starling law of the heart.

A: Frank-starling Law Of The Heart. Three important definitions ; End diastolic volume - it is the…

Q: potential

A: Introduction:-The conductive cell's with in the heart established the heart rates and transmits it…

Q: Parasympathetic stimulation also increases the delay between atrial and ventricular contractions.…

A: In physiology, the parasympathetic nervous system is responsible for the stimulation of…

Q: 15) The followings are the ECG characteristics of atrial fibrillation,except for() A Disappearance…

A: Atrial fibrillation is the condition when atrial contraction more than 350beat/ minute

Q: All of the following are true of the anatomy of the heart except A. The epicardium has a serous…

A: The heart is a muscular organ that pumps oxygenated blood to the aorta, which conveys it to the…

Q: The maximum amount of blood within the left ventricle just before the start of isovolumic…

A: The circulatory framework, likewise called the cardiovascular framework or the vascular framework,…

Q: 22. Define Ventricular Fibrillation. Describe what is happening electrically during VF.

A: Dysrhythmias Cardiac dysrhythmia is associated with abnormal electrical impulse conduction…

Q: The QRS wave of an ECG (or EKG) represents: a. depolarization of the ventricles. b. Depolarization…

A: ECG is basically a graphical representation of the electrical activity which takes place in the…

Q: There are a number of drugs that are prescribed to patients with heart failure in an effort to…

A: Inotropic agents are those that modify the force of contraction of the heart. They can be of two…

Q: 0. Early defibrillation is critical for individuals with sudden cardiac arrest for the following…

A: Defibrillation : It involves delivering a high intensity electrical charge inorder to depolarize the…

Q: A 28-year-old athlete is noted to have a baseline heart rate of 55bpm, which his trainer attributes…

A: The question is asking about the effects of acetylcholine (Ach) release into the atrioventricular…

Q: In atrial fibrillation, the atria do not contract correctly, and not all blood exits this chamber.…

A: Pulmonary embolism can be a serious complication resulting from right atrial fibrillation. One of…

Q: 1. What are some examples of arrhythmias that can be seen on a rhythm strip?  2. What additional…

A: Arrhythmia also called as irregular heartbeats. This occurs when the heart beats too fast or slow.…

Q: 2. It is desired to examine the kinetic properties of voltage-dependent potassium channels in a…

A: The voltage-dependent inhibition refers to the ability of the potassium channels to close or reduce…

Q: Given these structures of the conducting system of the heart:(1) atrioventricular bundle (4)…

A: The heart is the muscular organ about the size of our fist located just behind and its notch bit…

Q: electrocardiogram

A: In ECG T wave represents repolarization of ventricular myocardium. Any abnormality in the T wave is…

Q: Name three mechanisms that can increase cardiacoutput.

A: The amount of blood that the heart pumps, each minute is defined by the term known as cardiac…

Q: During isovolumetric relaxation, the atrioventricular and semilunar valves are: a. open and…

A: Cardiac cycle explains the flow of blood in the heart during a single heartbeat. This helps to…

Q: The left AV valve has only two large leaflets, while the right AV valve has three smaller leaflets.…

A: The heart is a muscular organ about the size of a closed fist which pumps blood around the body via…

Q: A patient was recently diagnosed with Congestive Heart Failure and was being managed with lifestyle…

A: Disclaimer: Hi! Thank you for posting the questions. Unfortunately, the question provided in the…