Section 2: Assessment Tools and Diagnostic Testing
... ICDs enable the action potentials (AP) to be distributed away from the SA node, conducing APs across the individual cardiac myocytes via gap junctions, leading to contraction of the heart. Atrial tachycardia occurs when the electrical impulses all originate from the sino-atrial node (SA) at a rate b ...
... ICDs enable the action potentials (AP) to be distributed away from the SA node, conducing APs across the individual cardiac myocytes via gap junctions, leading to contraction of the heart. Atrial tachycardia occurs when the electrical impulses all originate from the sino-atrial node (SA) at a rate b ...
Glossary of Cardiology Terms
... Atria: the upper chambers of the heart that pump blood to the lower chambers (ventricles). Atrial Fibrillation (AF): a very fast, disorganized heart rhythm in the upper chambers of the heart. Atrial Tachycardia (AT): a rapid heart rate that starts in the atria. Bradycardia (Bradyarrhythmia): an abno ...
... Atria: the upper chambers of the heart that pump blood to the lower chambers (ventricles). Atrial Fibrillation (AF): a very fast, disorganized heart rhythm in the upper chambers of the heart. Atrial Tachycardia (AT): a rapid heart rate that starts in the atria. Bradycardia (Bradyarrhythmia): an abno ...
Document
... When transmission of the depolarizing impulse from the sinus node through the AV conduction system of the heart is interrupted intermittently, P wave of atrial contraction is no longer followed by a QRS complex of ventricular contraction in the interrupted beat. This is second degree heart block. Th ...
... When transmission of the depolarizing impulse from the sinus node through the AV conduction system of the heart is interrupted intermittently, P wave of atrial contraction is no longer followed by a QRS complex of ventricular contraction in the interrupted beat. This is second degree heart block. Th ...
Key Issues in Emergency Management
... In the absence of an urgent need for cardioversion, the immediate choice is between ventricular rate control and prompt restoration of sinus rhythm. The debate over which of these two approaches to use is largely theoretical, with very little evidence from definitive clinical trials available. Exper ...
... In the absence of an urgent need for cardioversion, the immediate choice is between ventricular rate control and prompt restoration of sinus rhythm. The debate over which of these two approaches to use is largely theoretical, with very little evidence from definitive clinical trials available. Exper ...
ECG and the Heart*s Internal Conduction System
... Cardiac muscles do not need to be stimulated by nerves. This allows heart to beat even if nervous system doesn’t function well. Cardiac muscles have autorhythmic / natural pace-makers to keep the heart beating an an appropriate rate. Cardiac muscle has special features to speed impulse conduction fr ...
... Cardiac muscles do not need to be stimulated by nerves. This allows heart to beat even if nervous system doesn’t function well. Cardiac muscles have autorhythmic / natural pace-makers to keep the heart beating an an appropriate rate. Cardiac muscle has special features to speed impulse conduction fr ...
ECG and the Heart*s Internal Conduction System
... Cardiac muscles do not need to be stimulated by nerves. This allows heart to beat even if nervous system doesn’t function well. Cardiac muscles have autorhythmic / natural pace-makers to keep the heart beating an an appropriate rate. Cardiac muscle has special features to speed impulse conduction fr ...
... Cardiac muscles do not need to be stimulated by nerves. This allows heart to beat even if nervous system doesn’t function well. Cardiac muscles have autorhythmic / natural pace-makers to keep the heart beating an an appropriate rate. Cardiac muscle has special features to speed impulse conduction fr ...
PDF file - Via Medica Journals
... rhythm versus those in persistent atrial fibrillation (regardless of randomization treatment group) [7]. As pointed out in the current paper by Szulc et al, no large study to date has looked at the important question of serial LV function in a population of AF patients randomized to rate vs. rhythm ...
... rhythm versus those in persistent atrial fibrillation (regardless of randomization treatment group) [7]. As pointed out in the current paper by Szulc et al, no large study to date has looked at the important question of serial LV function in a population of AF patients randomized to rate vs. rhythm ...
ECG and the Heart’s Internal Conduction System
... Cardiac muscles do not need to be stimulated by nerves. This allows heart to beat even if nervous system doesn’t function well. Cardiac muscles have autorhythmic / natural pace-makers to keep the heart beating an an appropriate rate. Cardiac muscle has special features to speed impulse conduction fr ...
... Cardiac muscles do not need to be stimulated by nerves. This allows heart to beat even if nervous system doesn’t function well. Cardiac muscles have autorhythmic / natural pace-makers to keep the heart beating an an appropriate rate. Cardiac muscle has special features to speed impulse conduction fr ...
01 Basic Cardiology
... impulses to posterior, inferior, left ventricular free wall and posterior papillary m. with dual blood supply, less likely to become ischemic, ...
... impulses to posterior, inferior, left ventricular free wall and posterior papillary m. with dual blood supply, less likely to become ischemic, ...
- James Paget University Hospital
... also trigger AF to develop. For example, AF occurs in some people with heart valve problems, cardiomyopathy, and pericardial (outer lining of the heart muscle) disease. • Other conditions and situations that may trigger AF to develop include an overactive thyroid gland (hyperthyroidism); pneumonia, ...
... also trigger AF to develop. For example, AF occurs in some people with heart valve problems, cardiomyopathy, and pericardial (outer lining of the heart muscle) disease. • Other conditions and situations that may trigger AF to develop include an overactive thyroid gland (hyperthyroidism); pneumonia, ...
Medtronic Receives FDA Approval and CE Mark for Arctic Front
... which are a source of erratic electrical signals that cause atrial fibrillation. The device uses coolant rather than heat (radiofrequency). Cryoballoon technology is associated with shorter procedure times than point-by-point radiofrequency ablation1, 2, and better treatment outcomes than drug thera ...
... which are a source of erratic electrical signals that cause atrial fibrillation. The device uses coolant rather than heat (radiofrequency). Cryoballoon technology is associated with shorter procedure times than point-by-point radiofrequency ablation1, 2, and better treatment outcomes than drug thera ...
A SIMPLE APPROACH TO TACHYARRHYTHMIAS
... • Block of normal conduction pathway (BBB) • Rhythm start in ventricle Safest to assume wide rhythms are ventricular ...
... • Block of normal conduction pathway (BBB) • Rhythm start in ventricle Safest to assume wide rhythms are ventricular ...
ECG - WordPress.com
... Electrocardiograph is a transthoracic interpretation of the electrical activity of the heart over time captured and externally recorded by skin electrodes. It is a noninvasive recording produced by an electrocardiographic device. The ECG works mostly by detecting and amplifying the tiny electrical c ...
... Electrocardiograph is a transthoracic interpretation of the electrical activity of the heart over time captured and externally recorded by skin electrodes. It is a noninvasive recording produced by an electrocardiographic device. The ECG works mostly by detecting and amplifying the tiny electrical c ...
Arrhythmias and Dysrhythmias - American Academy of Family
... 2015. His areas of interest include inpatient family medicine, newborn care, and point-of-care ultrasound teaching. ...
... 2015. His areas of interest include inpatient family medicine, newborn care, and point-of-care ultrasound teaching. ...
Acute cardiac failure
... • Systemic disorders – collagen-vascular diseases, sarcoidosis, celiac disease, thyrotoxicosis, hypereosinophilia. • Idiopatic myocarditis (Fiedler’s) ...
... • Systemic disorders – collagen-vascular diseases, sarcoidosis, celiac disease, thyrotoxicosis, hypereosinophilia. • Idiopatic myocarditis (Fiedler’s) ...
Control of the Heart Rate (students)
... Control of the Heart Rate Electrical impulse flow chart below. SA node AtriaAV nodeAV bundle (Purkinje fibers)Ventricles ...
... Control of the Heart Rate Electrical impulse flow chart below. SA node AtriaAV nodeAV bundle (Purkinje fibers)Ventricles ...
DYSRHYTHMIAS
... • P waves may be apparent for a short duration • There is no heartbeat, no palpable pulse, and no ...
... • P waves may be apparent for a short duration • There is no heartbeat, no palpable pulse, and no ...
Medical Necessity Guidelines: Percutaneous Left Atrial Appendage
... The WATCHMAN LAA Closure Technology consists of a delivery catheter and a device that is permanently implanted in the left atrial appendage (LAA) of the heart. The device, often referred to as the WATCHMAN, prevents LAA blood clots from entering the bloodstream and potentially causing a stroke. It i ...
... The WATCHMAN LAA Closure Technology consists of a delivery catheter and a device that is permanently implanted in the left atrial appendage (LAA) of the heart. The device, often referred to as the WATCHMAN, prevents LAA blood clots from entering the bloodstream and potentially causing a stroke. It i ...
ATRIAL SYSTOLE
... amount of blood. Atrial contraction is complete before the ventricle begins to contract. Atrial pressure / Jugular venous pulse: The "a" wave occurs when the atrium contracts and atrial pressure increases. Blood cannot enter the atrium so it flows back up the jugular vein, causing the first jugular ...
... amount of blood. Atrial contraction is complete before the ventricle begins to contract. Atrial pressure / Jugular venous pulse: The "a" wave occurs when the atrium contracts and atrial pressure increases. Blood cannot enter the atrium so it flows back up the jugular vein, causing the first jugular ...
ARRHYTHMIAS in Adult Congenital Heart Disease
... Cardiology Clinical Nurse Specialist Stanford Hospital and Clinics Palo Alto, California INTRODUCTION Symptomatic arrhythmias occur with increasing frequency for adult congenital heart disease (ACHD) as they move through adolescence and into adulthood. Arrhythmias are associated with increased hospi ...
... Cardiology Clinical Nurse Specialist Stanford Hospital and Clinics Palo Alto, California INTRODUCTION Symptomatic arrhythmias occur with increasing frequency for adult congenital heart disease (ACHD) as they move through adolescence and into adulthood. Arrhythmias are associated with increased hospi ...
ECG Interpretation
... – a) type I (Wenckebach) • longer and longer PR intervals until a QRS is dropped ...
... – a) type I (Wenckebach) • longer and longer PR intervals until a QRS is dropped ...
ECG Interpretation
... – a) type I (Wenckebach) • longer and longer PR intervals until a QRS is dropped ...
... – a) type I (Wenckebach) • longer and longer PR intervals until a QRS is dropped ...
Rapid Heartbeat - Heart Rhythm Society
... about 100,000 times, at a rate mostly less than 100 beats per minute. Changes in rate brought about by variations in activity, diet, medication, and age are normal and common. During intense exercise or emotional distress, a heart may speed up to 160 to 180 or more beats per minute. This rapid heart ...
... about 100,000 times, at a rate mostly less than 100 beats per minute. Changes in rate brought about by variations in activity, diet, medication, and age are normal and common. During intense exercise or emotional distress, a heart may speed up to 160 to 180 or more beats per minute. This rapid heart ...
Today`s Objectives
... together – severe chest pain Pericardial effusion- pericardial fluid, pus, or blood accumulate in the space between the two layers and impairs pumping action of the heart Cardiac tamponade-compression of the heart ...
... together – severe chest pain Pericardial effusion- pericardial fluid, pus, or blood accumulate in the space between the two layers and impairs pumping action of the heart Cardiac tamponade-compression of the heart ...
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.