Heart Practice Quiz
... 8. Name the 3 phases of the cardiac cycle in order. What major events occur during each phase? 9. Which vessels empty into the right atrium? Into the left atrium? 10. What effect does epinephrine/norepinephrine have on heart rate? What effect does ACh have on heart rate? 11. What is the fossa ovalis ...
... 8. Name the 3 phases of the cardiac cycle in order. What major events occur during each phase? 9. Which vessels empty into the right atrium? Into the left atrium? 10. What effect does epinephrine/norepinephrine have on heart rate? What effect does ACh have on heart rate? 11. What is the fossa ovalis ...
Abstrak_Ina_HRS
... of adults undergoing electrophysiological studies. Automatic AT tends to be a condition that affects the young, whereas AT due to microreentry is more common in older populations. The lack of efficacy of antiarrhythmic therapy and the advent of radiofrequency ablation have altered our primary approa ...
... of adults undergoing electrophysiological studies. Automatic AT tends to be a condition that affects the young, whereas AT due to microreentry is more common in older populations. The lack of efficacy of antiarrhythmic therapy and the advent of radiofrequency ablation have altered our primary approa ...
Cardiac Impulse
... two action potentials (drifts to threshold), when the threshold for action potential generation is reached, the membrane generates an impulse(fires) An autorythmic cell membrane’s slow drift to threshold is called pacemaker potential ...
... two action potentials (drifts to threshold), when the threshold for action potential generation is reached, the membrane generates an impulse(fires) An autorythmic cell membrane’s slow drift to threshold is called pacemaker potential ...
- Corlanor
... compared to placebo was 6% (2.7% symptomatic; 3.4% asymptomatic) vs. 1.3% per patient-year, respectively. Risk factors for bradycardia include sinus node dysfunction, conduction defects, ventricular dyssynchrony, and use of other negative chronotropes. Concurrent use of verapamil or diltiazem also i ...
... compared to placebo was 6% (2.7% symptomatic; 3.4% asymptomatic) vs. 1.3% per patient-year, respectively. Risk factors for bradycardia include sinus node dysfunction, conduction defects, ventricular dyssynchrony, and use of other negative chronotropes. Concurrent use of verapamil or diltiazem also i ...
6.2 The blood system
... The sinoatrial node acts as a pacemaker. 6.2.10 The sinoatrial node sends out an electrical signal that stimulates contraction as it is propagated through the walls of the atria and then the walls of the ventricles. ...
... The sinoatrial node acts as a pacemaker. 6.2.10 The sinoatrial node sends out an electrical signal that stimulates contraction as it is propagated through the walls of the atria and then the walls of the ventricles. ...
Zool 352 Lecture 33
... disease states, depending on the cell type. • In mammals: highly dependent on oxidative metabolism ...
... disease states, depending on the cell type. • In mammals: highly dependent on oxidative metabolism ...
Takes 50ms for ap to travel from SA to AV
... 1. Begins in the Rt. Atrium (poster, wall-near Sup Ven Cav) a. SA node (Sinoatrial-pacemaker cells) action potential generated here independent of the nervous system regular intervals (80-100 AP/min)- although slower than this due to chemicals of body (72 beats /min) cells never reach resting potent ...
... 1. Begins in the Rt. Atrium (poster, wall-near Sup Ven Cav) a. SA node (Sinoatrial-pacemaker cells) action potential generated here independent of the nervous system regular intervals (80-100 AP/min)- although slower than this due to chemicals of body (72 beats /min) cells never reach resting potent ...
Chapter01_Detailed_Answers
... adrenergic system, produces the “fight or flight” response. It works the opposite of the parasympathetic nervous system. ...
... adrenergic system, produces the “fight or flight” response. It works the opposite of the parasympathetic nervous system. ...
Electrical activity in the heart
... recovery stage is also known as the refractory period – during that stage it is unable to conduct another nerve impulse until it is back in the resting stage. Electrical activity can be monitored using an electrocardiogram or ECG. A standard ECG trace is shown below and consists of a series of waves ...
... recovery stage is also known as the refractory period – during that stage it is unable to conduct another nerve impulse until it is back in the resting stage. Electrical activity can be monitored using an electrocardiogram or ECG. A standard ECG trace is shown below and consists of a series of waves ...
The Cardiac Conduction System
... -Deliver impulses to muscle tissue of ventricles, causing ventricles to contract and blood to be forced through pulmonary artery and aorta ...
... -Deliver impulses to muscle tissue of ventricles, causing ventricles to contract and blood to be forced through pulmonary artery and aorta ...
First Degree and Second Degree Mobitz Type I
... exercise. Your cardiology provider may suggest more tests and clinic visits. Signs and Symptoms Most infants and children have no signs or symptoms of first degree AV block or Wenckebach. Testing A member of the health care team does a complete exam and a health history. ...
... exercise. Your cardiology provider may suggest more tests and clinic visits. Signs and Symptoms Most infants and children have no signs or symptoms of first degree AV block or Wenckebach. Testing A member of the health care team does a complete exam and a health history. ...
Cardiovascular System
... – Depolarizes every .8 sec. At rest – Depolarizes due to change in permeability – Pacemaker ...
... – Depolarizes every .8 sec. At rest – Depolarizes due to change in permeability – Pacemaker ...
Worksheet
... 2. Blood is pumped to the lungs by which chamber of the heart? a) Left ventricle b) Right ventricle c) Both left and right ventricle d) By the atria 3. During an action potential: a. the membrane potential increases b. the membrane potential stays the same c. the membrane potential decreases 4. Prim ...
... 2. Blood is pumped to the lungs by which chamber of the heart? a) Left ventricle b) Right ventricle c) Both left and right ventricle d) By the atria 3. During an action potential: a. the membrane potential increases b. the membrane potential stays the same c. the membrane potential decreases 4. Prim ...
Electrocardiogram
... - receives an impulse from the SA Node - electrical signal continues down the specialized conducting system - Depolarizes: 15 – 20 x/ min - When the SA node is diseased, the AV node takes over - If a person had a heart rate of only 40 bpm, they either were a high aerobic athlete or they need a pace ...
... - receives an impulse from the SA Node - electrical signal continues down the specialized conducting system - Depolarizes: 15 – 20 x/ min - When the SA node is diseased, the AV node takes over - If a person had a heart rate of only 40 bpm, they either were a high aerobic athlete or they need a pace ...
Atrial fibrillation
... Extrasystolic PQ may be prolonged due to incomplete recovery of AV-junction after prior sinus cycle. Exrtrasystolic QRS width may normal (<120 msec), it may be wide and deformed, resembling a bundle branch block due to incomplete recovery of bundle branch (aberrant conduction). Distance between R wa ...
... Extrasystolic PQ may be prolonged due to incomplete recovery of AV-junction after prior sinus cycle. Exrtrasystolic QRS width may normal (<120 msec), it may be wide and deformed, resembling a bundle branch block due to incomplete recovery of bundle branch (aberrant conduction). Distance between R wa ...
Surgery in Wolff-Parkinson-White Syndrome
... but a normal QRS complex. Intermediate forms also occur. The various abnormalities may be grouped under the term pre-excitation syndromes, and all predispose to paroxysmal tachycardias.'0 11 The tendency to paroxysmal tachycardia results directly from the dual (or multiple) pathways between atrial a ...
... but a normal QRS complex. Intermediate forms also occur. The various abnormalities may be grouped under the term pre-excitation syndromes, and all predispose to paroxysmal tachycardias.'0 11 The tendency to paroxysmal tachycardia results directly from the dual (or multiple) pathways between atrial a ...
PERI – ARREST ARRHYTHMIAS
... BACKGROUND The term ‘peri – arrest arrhythmias’ are used to describe cardiac rhythm disorders that may precede cardiac arrest or follow initial resuscitation from a cardiac arrest. Effective treatment of such arrhythmias may prevent cardiac arrest. A clear trace showing ‘P’ waves and ‘QRS’ complexes ...
... BACKGROUND The term ‘peri – arrest arrhythmias’ are used to describe cardiac rhythm disorders that may precede cardiac arrest or follow initial resuscitation from a cardiac arrest. Effective treatment of such arrhythmias may prevent cardiac arrest. A clear trace showing ‘P’ waves and ‘QRS’ complexes ...
Direct Current Cardioversion
... Heart rhythm is mainly controlled by the conduction system of the heart. Any abnormality in the conduction system may result in abnormal heart rhythm (arrhythmia). Arrhythmias with fast heart rate can cause syncope, heart failure or occasionally cardiac death. It may be necessary to stop arrhythmias ...
... Heart rhythm is mainly controlled by the conduction system of the heart. Any abnormality in the conduction system may result in abnormal heart rhythm (arrhythmia). Arrhythmias with fast heart rate can cause syncope, heart failure or occasionally cardiac death. It may be necessary to stop arrhythmias ...
Acute cardiac failure
... A state in which impaired cardiac function is unable to maintain an adequate circulation for the metabolic needs of the body • In most cases cardiac insufficiency is manifested by a decrease in cardiac output • Cardiac output (CO) is the volume of blood ejected from the left ventricle each minute. ...
... A state in which impaired cardiac function is unable to maintain an adequate circulation for the metabolic needs of the body • In most cases cardiac insufficiency is manifested by a decrease in cardiac output • Cardiac output (CO) is the volume of blood ejected from the left ventricle each minute. ...
Sudden Cardiac Arrest Awareness Form
... Ø An electrical malfunction (short-‐circuit) causes the bottom chambers of the heart (ventricles) to beat dangerously fast (ventricular tachycardia or fibrillation) and disrupts the pumping ability of the heart. ...
... Ø An electrical malfunction (short-‐circuit) causes the bottom chambers of the heart (ventricles) to beat dangerously fast (ventricular tachycardia or fibrillation) and disrupts the pumping ability of the heart. ...
Slide ()
... Anatomy of the heart. A: Anterior view of the heart. B: View of the right heart with the right atrial wall reflected to show the right atrium. C: Anterior view of the heart with the anterior wall removed to show the right ventricular cavity. D: View of the left heart with the left ventricular wall t ...
... Anatomy of the heart. A: Anterior view of the heart. B: View of the right heart with the right atrial wall reflected to show the right atrium. C: Anterior view of the heart with the anterior wall removed to show the right ventricular cavity. D: View of the left heart with the left ventricular wall t ...
The Heart Quiz—Chapter 19
... 5. The superior chambers are called __________, and the inferior chambers are called _________. 6. The blood vessels that carry blood to and from the lungs form the __________ circuit (_____ side of the heart), and the blood vessels that carry the functional blood supply to and from all body tissues ...
... 5. The superior chambers are called __________, and the inferior chambers are called _________. 6. The blood vessels that carry blood to and from the lungs form the __________ circuit (_____ side of the heart), and the blood vessels that carry the functional blood supply to and from all body tissues ...
The Hearts conduction system
... The impulse activates the AV node in the right atrium, which passes the impulse down the bundle of His, located in the septum of the heart. The bundle of His splits into two branches and spreads the impulse down to the bottom of the heart and then up around the walls of the two ventricles using ...
... The impulse activates the AV node in the right atrium, which passes the impulse down the bundle of His, located in the septum of the heart. The bundle of His splits into two branches and spreads the impulse down to the bottom of the heart and then up around the walls of the two ventricles using ...
right Bundle Branch
... initiates cardiac muscle contraction and determines the heart rate. It is supplied by the sinus node artery, usually a branch of the right coronary artery. Contraction spreads through the atrial wall until it reaches the Atrioventricular (AV) Node in the right atrial side of the interatrial septum j ...
... initiates cardiac muscle contraction and determines the heart rate. It is supplied by the sinus node artery, usually a branch of the right coronary artery. Contraction spreads through the atrial wall until it reaches the Atrioventricular (AV) Node in the right atrial side of the interatrial septum j ...
The Cardiac Cycle
... • Atrial Systole is where both atria contract (0.1s) • Ventricular Systole is where both ventricles contract forcing blood through the pulmonary artery to the lungs and through the aorta to the rest of the body (0.3s) • Atrial diastole is where the atria relax. Blood will enter the atria from the la ...
... • Atrial Systole is where both atria contract (0.1s) • Ventricular Systole is where both ventricles contract forcing blood through the pulmonary artery to the lungs and through the aorta to the rest of the body (0.3s) • Atrial diastole is where the atria relax. Blood will enter the atria from the la ...