Electrocardiogram
... ventricular rate varies, may increase to greater than 150 if untreated if rate > 100 beats/min referred to as uncontrolled AF if rate < 100 beats/min referred to as controlled AF Sick Sinus Syndrome (SSS) term to describe several disorders of the SA node tachycardia-bradycardia syndrome is ...
... ventricular rate varies, may increase to greater than 150 if untreated if rate > 100 beats/min referred to as uncontrolled AF if rate < 100 beats/min referred to as controlled AF Sick Sinus Syndrome (SSS) term to describe several disorders of the SA node tachycardia-bradycardia syndrome is ...
Physio Lecture 16 Analyzing EKG vectors and MEA
... – (mechanical event that will result: atrial systole) • QRS complex- depolarization of ventricles – Q wave- due to left to right depolarization at bundle branch (right has “detour”) – atrial repolarization and diastole (signal obscured) – AV node fires, ventricular depolarization – (mechanical event ...
... – (mechanical event that will result: atrial systole) • QRS complex- depolarization of ventricles – Q wave- due to left to right depolarization at bundle branch (right has “detour”) – atrial repolarization and diastole (signal obscured) – AV node fires, ventricular depolarization – (mechanical event ...
7-Days Holter
... permanent AF, persistent AF into permanent AF, as well as the incidence of overall and persistent AF recurrence, which are evaluated by 7-days ambulatory electrocardiograph monitoring (Holter) and patients’ diaries during 2 years follow-up. The secondary endpoints of this study include: (1) ...
... permanent AF, persistent AF into permanent AF, as well as the incidence of overall and persistent AF recurrence, which are evaluated by 7-days ambulatory electrocardiograph monitoring (Holter) and patients’ diaries during 2 years follow-up. The secondary endpoints of this study include: (1) ...
The ECG in clinical practice: making the diagnosis at a glance
... • Sinus node (initiate the electrical impulse): 6080/minutes: fires the impulse to the atria • AV node (CS in RA): only electrical connection between atria and ventricles: transmit the impulse from the atria to the ventricle: slows down the impulse (filter and regulator) • Bundle of His: made out of ...
... • Sinus node (initiate the electrical impulse): 6080/minutes: fires the impulse to the atria • AV node (CS in RA): only electrical connection between atria and ventricles: transmit the impulse from the atria to the ventricle: slows down the impulse (filter and regulator) • Bundle of His: made out of ...
Analysis of vagal effects on ventricular rhythm in patients with atrial
... thereby indirectly prolonging atrioventricular nodal refractoriness. The purpose of the present study was to analyse these effects in man. 2. Sixteen patients with chronic atrial fibrillation were studied. After administration of propranolol (0.2 mg/kg intravenously) baseline ventricular rhythm was ...
... thereby indirectly prolonging atrioventricular nodal refractoriness. The purpose of the present study was to analyse these effects in man. 2. Sixteen patients with chronic atrial fibrillation were studied. After administration of propranolol (0.2 mg/kg intravenously) baseline ventricular rhythm was ...
Rapid Heart Rate - Milliken Animal Clinic
... • Some dogs may exhibit no clinical signs; rapid heart rate detected on physical examination • Dogs with fast supraventricular tachycardia (heart rate usually greater than 300 beats per minute) generally exhibit episodic weakness or fainting (known as “syncope”) • Coughing or breathing abnormalitie ...
... • Some dogs may exhibit no clinical signs; rapid heart rate detected on physical examination • Dogs with fast supraventricular tachycardia (heart rate usually greater than 300 beats per minute) generally exhibit episodic weakness or fainting (known as “syncope”) • Coughing or breathing abnormalitie ...
ACRCSP Antithrombotic Management
... CHADS₂ is an acronym for the risk factors: Congestive heart failure, Hypertension (consistently over 140/90 with or without medication), Age (≥75), Diabetes Mellitus, and prior Stroke or transient ischemic attack (TIA) or thromboembolism. The need for antithrombotic treatment is then determined by t ...
... CHADS₂ is an acronym for the risk factors: Congestive heart failure, Hypertension (consistently over 140/90 with or without medication), Age (≥75), Diabetes Mellitus, and prior Stroke or transient ischemic attack (TIA) or thromboembolism. The need for antithrombotic treatment is then determined by t ...
rapid_heart_rate
... • Some dogs may exhibit no clinical signs; rapid heart rate detected on physical examination • Dogs with fast supraventricular tachycardia (heart rate usually greater than 300 beats per minute) generally exhibit episodic weakness or fainting (known as “syncope”) • Coughing or breathing abnormalitie ...
... • Some dogs may exhibit no clinical signs; rapid heart rate detected on physical examination • Dogs with fast supraventricular tachycardia (heart rate usually greater than 300 beats per minute) generally exhibit episodic weakness or fainting (known as “syncope”) • Coughing or breathing abnormalitie ...
Role of Atrial Fibrillation and Atrioventricular Conduction
... tibrillation (although with a number of possible extrasystoles) in only one patient (Patient 1, episode a). Nevertheless, this single record in one patient may be representative of the nature of bypass tract conductivity in patients who may be at risk of sudden death. It stands to reason that the su ...
... tibrillation (although with a number of possible extrasystoles) in only one patient (Patient 1, episode a). Nevertheless, this single record in one patient may be representative of the nature of bypass tract conductivity in patients who may be at risk of sudden death. It stands to reason that the su ...
Cardiac output and Venous Return
... greater than 100 beats /min. Caused by (1) increased body temperature, (2) sympathetic stimulation (such as from loss of blood and the reflex stimulation of the heart), and (3) toxic conditions of the heart ...
... greater than 100 beats /min. Caused by (1) increased body temperature, (2) sympathetic stimulation (such as from loss of blood and the reflex stimulation of the heart), and (3) toxic conditions of the heart ...
Questions for Electrocardiography article
... A. Bradycardia (heart rhythm below 60 beats per minute) B. Tachycardia (heart rate above 100 beats per minute) C. Bradyarrhythmia (heart rhythm 60 to 100 beats per minute, with an irregular pulse) D. A chaotic heart rhythm (irregular irregularity) E. All of these are arrhythmias. F. None of these ar ...
... A. Bradycardia (heart rhythm below 60 beats per minute) B. Tachycardia (heart rate above 100 beats per minute) C. Bradyarrhythmia (heart rhythm 60 to 100 beats per minute, with an irregular pulse) D. A chaotic heart rhythm (irregular irregularity) E. All of these are arrhythmias. F. None of these ar ...
Baker Heart Research Institute - High Blood Pressure Research
... dimethylarginine which is a new risk factor for cardiovascular diseases. David Kaye and his team are identifying novel modulators of arginine transport and have screened a library of 300 novel compounds for their ability to increase intracellular arginine transport. In recent studies they found that ...
... dimethylarginine which is a new risk factor for cardiovascular diseases. David Kaye and his team are identifying novel modulators of arginine transport and have screened a library of 300 novel compounds for their ability to increase intracellular arginine transport. In recent studies they found that ...
Atrial Fibrillation in Patients with Ischemic and Non
... evaluated the long-term development of AF post discharge in 271 patients with myocardial infarction and ejection fraction <40%. The study found an impressive 39.3% incidence of new AF, with the highest incidence in the first 2 months post infarction (16%). In patients who developed AF, over 50% had ...
... evaluated the long-term development of AF post discharge in 271 patients with myocardial infarction and ejection fraction <40%. The study found an impressive 39.3% incidence of new AF, with the highest incidence in the first 2 months post infarction (16%). In patients who developed AF, over 50% had ...
ECG Rhythm Interpretation Workbook
... beats). There are P waves and they are associated with the QRS complexes. There are 2 P waves to each QRS complex. Type 2 Heart Block with a 2:1 block. Case 11. Bradycardia at 60 bpm. Narrow complexes, regular (no drop beats). Atrial activity present. One P wave to one QRS complex. PR interval prolo ...
... beats). There are P waves and they are associated with the QRS complexes. There are 2 P waves to each QRS complex. Type 2 Heart Block with a 2:1 block. Case 11. Bradycardia at 60 bpm. Narrow complexes, regular (no drop beats). Atrial activity present. One P wave to one QRS complex. PR interval prolo ...
Chapter 19 - McGraw Hill Higher Education
... • Cardiac reserve: difference between a persons maximum and resting CO – with fitness, with disease ...
... • Cardiac reserve: difference between a persons maximum and resting CO – with fitness, with disease ...
Chapter 19
... • Cardiac reserve: difference between a persons maximum and resting CO – with fitness, with disease ...
... • Cardiac reserve: difference between a persons maximum and resting CO – with fitness, with disease ...
Arrhythmias 101
... Event Monitors • Holter monitoring: Document symptomatic and asymptomatic arrhythmias over 24-48 hours. Can also evaluate treatment effectiveness in a-fib, pacemaker effectiveness and identify silent MIs. • Trans-telephonic event recording: patient either wears monitor for several days or attaches ...
... Event Monitors • Holter monitoring: Document symptomatic and asymptomatic arrhythmias over 24-48 hours. Can also evaluate treatment effectiveness in a-fib, pacemaker effectiveness and identify silent MIs. • Trans-telephonic event recording: patient either wears monitor for several days or attaches ...
Document
... prolongation in 1.5% requiring drug discontinuation and ventricular arrhythmias in 1.3% of trials[16]. Some antiarrhythmics, such as dofetilide, are additionally restricted to prescribers who have completed appropriate educational forums[17]. In one study of 129 patients with AF or flutter, subjects ...
... prolongation in 1.5% requiring drug discontinuation and ventricular arrhythmias in 1.3% of trials[16]. Some antiarrhythmics, such as dofetilide, are additionally restricted to prescribers who have completed appropriate educational forums[17]. In one study of 129 patients with AF or flutter, subjects ...
Low risk - The Cardiology Report
... two of the following risk factors: heart failure or moderate/severe left ventricular dysfunction (ejection fraction < 40%), diabetes mellitus, hypertension, age 65–74 years, female gender, vascular disease ...
... two of the following risk factors: heart failure or moderate/severe left ventricular dysfunction (ejection fraction < 40%), diabetes mellitus, hypertension, age 65–74 years, female gender, vascular disease ...
Acute Atrial Fibrillation as an Unusual Form of Cardiotoxicity
... taking lithium either takes an increased dosage for a period of time or develops decreased renal elimination of the drug.5 In the majority of LT cases, neurologic and gastrointestinal symptoms predominate including nystagmus, ataxia, tremors, nausea, vomiting,and diarrhea.2 Cardiac toxicity is unusu ...
... taking lithium either takes an increased dosage for a period of time or develops decreased renal elimination of the drug.5 In the majority of LT cases, neurologic and gastrointestinal symptoms predominate including nystagmus, ataxia, tremors, nausea, vomiting,and diarrhea.2 Cardiac toxicity is unusu ...
Familial Incidence of Atrial Septal Defect
... showed a ventricular septal defect (VSD) and pulmonary stenosis, respectively, as associated defects. In our series ASD was the only defect (Table 1). The fifth sibling who died at two years of age in congestive heart failure had in all likelihood a complex heart abnormality. This is believed to be ...
... showed a ventricular septal defect (VSD) and pulmonary stenosis, respectively, as associated defects. In our series ASD was the only defect (Table 1). The fifth sibling who died at two years of age in congestive heart failure had in all likelihood a complex heart abnormality. This is believed to be ...
Familial Incidence of Atrial Septal Defect
... showed a ventricular septal defect (VSD) and pulmonary stenosis, respectively, as associated defects. In our series ASD was the only defect (Table 1). The fifth sibling who died at two years of age in congestive heart failure had in all likelihood a complex heart abnormality. This is believed to be ...
... showed a ventricular septal defect (VSD) and pulmonary stenosis, respectively, as associated defects. In our series ASD was the only defect (Table 1). The fifth sibling who died at two years of age in congestive heart failure had in all likelihood a complex heart abnormality. This is believed to be ...
Dual Chamber Pacing - Scope
... Background: Cardiac arrhythmias are abnormal heart rhythms which may be fast (tachycardia), slow (bradycardia), or irregular and are caused by disturbances in the intrinsic heart rate or the electrical pathway of the heart. The most common causes of cardiac arrhythmia are heart disease, coronary art ...
... Background: Cardiac arrhythmias are abnormal heart rhythms which may be fast (tachycardia), slow (bradycardia), or irregular and are caused by disturbances in the intrinsic heart rate or the electrical pathway of the heart. The most common causes of cardiac arrhythmia are heart disease, coronary art ...
4 - Regulation of the Heartbeat
... The peak pressure and the maximal rate of pressure rise [dP/dt] during systole are markedly increased. The duration of systole is reduced and the rate of ventricular relaxation is increased during the early phases of diastole. The briefer systole allows more time for diastole and hence for ven ...
... The peak pressure and the maximal rate of pressure rise [dP/dt] during systole are markedly increased. The duration of systole is reduced and the rate of ventricular relaxation is increased during the early phases of diastole. The briefer systole allows more time for diastole and hence for ven ...
Atrial fibrillation
Atrial fibrillation (AF or A-fib) is an abnormal heart rhythm characterized by rapid and irregular beating. Often it starts as brief periods of abnormal beating which become longer and possibly constant over time. Most episodes have no symptoms. Occasionally there may be heart palpitations, fainting, shortness of breath, or chest pain. The disease increases the risk of heart failure, dementia, and stroke.Hypertension and valvular heart disease are the most common alterable risk factors for AF. Other heart-related risk factors include heart failure, coronary artery disease, cardiomyopathy, and congenital heart disease. In the developing world valvular heart disease often occurs as a result of rheumatic fever. Lung-related risk factors include COPD, obesity, and sleep apnea. Other factors include excess alcohol intake, diabetes mellitus, and thyrotoxicosis. However, half of cases are not associated with one of these risks. A diagnosis is made by feeling the pulse and may be confirmed using an electrocardiogram (ECG). The typical ECG shows no P waves and an irregular ventricular rate.AF is often treated with medications to slow the heart rate to a near normal range (known as rate control) or to convert the rhythm to normal sinus rhythm (known as rhythm control). Electrical cardioversion can also be used to convert AF to a normal sinus rhythm and is often used emergently if the person is unstable. Ablation may prevent recurrence in some people. Depending on the risk of stroke either aspirin or anti-clotting medications such as warfarin or a novel oral anticoagulant may be recommended. While these medications reduce this risk, they increase rates of major bleeding.Atrial fibrillation is the most common serious abnormal heart rhythm. In Europe and North America, as of 2014, it affects about 2% to 3% of the population. This is an increase from 0.4 to 1% of the population around 2005. In the developing world about 0.6% of males and 0.4% of females are affected. The percentage of people with AF increases with age with 0.14% under 50 years old, 4% between 60 and 70 years old, and 14% over 80 years old being affected. A-fib and atrial flutter resulted in 112,000 deaths in 2013, up from 29,000 in 1990. The first known report of an irregular pulse was by John Baptist Senac in 1749. This was first documented by ECG in 1909 by Thomas Lewis.