639 Arrhythmias - SA & Atrial
... • Multiple ectopic reentrant focuses fire in the atria causing a chaotic baseline, rate 400 ± 50 • The rhythm is irregular and rapid (approx. 140 – 150 beats per minute) • Q is usually d by 10% to 20% (no atrial “kick” to ventricular filling) • May be seen in CAD (especially following surgery), mitr ...
... • Multiple ectopic reentrant focuses fire in the atria causing a chaotic baseline, rate 400 ± 50 • The rhythm is irregular and rapid (approx. 140 – 150 beats per minute) • Q is usually d by 10% to 20% (no atrial “kick” to ventricular filling) • May be seen in CAD (especially following surgery), mitr ...
Lecture 8 Mercola 2 reduced.pptx
... • increased K+ channel opening • decreased sinus node rhythm • decreased A-‐V node ...
... • increased K+ channel opening • decreased sinus node rhythm • decreased A-‐V node ...
Cardiac Muscle
... • Tachycardia is a rapid heart rate (over 100 beats per minute). • Bradycardia is a heart rate that is substantially slower than normal (less than 60 beats per minute). • Neither condition is pathological, but prolonged tachycardia may progress to fibrillation. ...
... • Tachycardia is a rapid heart rate (over 100 beats per minute). • Bradycardia is a heart rate that is substantially slower than normal (less than 60 beats per minute). • Neither condition is pathological, but prolonged tachycardia may progress to fibrillation. ...
Atrial Septal Defect
... partitioning process does not occur completely, leaving an opening in the atrial septum. Some congenital heart defects may have a genetic link, either occurring due to a defect in a gene, a chromosome abnormality or environmental exposure, causing heart problems to occur more often in certain famili ...
... partitioning process does not occur completely, leaving an opening in the atrial septum. Some congenital heart defects may have a genetic link, either occurring due to a defect in a gene, a chromosome abnormality or environmental exposure, causing heart problems to occur more often in certain famili ...
Heart beat activity - Liberty Union High School District
... of your heart is the power source that makes this possible. Your heartbeat is triggered by electrical impulses that travel down a special pathway through your heart: 1. SA node (sinoatrial node) – known as the heart’s natural pacemaker The impulse starts in a small bundle of specialized cells locate ...
... of your heart is the power source that makes this possible. Your heartbeat is triggered by electrical impulses that travel down a special pathway through your heart: 1. SA node (sinoatrial node) – known as the heart’s natural pacemaker The impulse starts in a small bundle of specialized cells locate ...
Atrial Fibrillation - Ministry of Health
... worrying. For most people, the management of atrial fibrillation is quite straight forward. Even though you have atrial fibrillation, you should still be able to enjoy a normal and active lifestyle. The main concern with atrial fibrillation is that it increases the risk of a stroke. Treatment can re ...
... worrying. For most people, the management of atrial fibrillation is quite straight forward. Even though you have atrial fibrillation, you should still be able to enjoy a normal and active lifestyle. The main concern with atrial fibrillation is that it increases the risk of a stroke. Treatment can re ...
Winter 2014 - American Certification Agency
... an attack of PAT. In most cases PAT affects more women than men; most often develops at age 20-30 but can occur at any age; occurs most often in those that are very anxious, under stress or physically fatigued; occurs in those with an overactive thyroid gland; those who use caffeine or alcohol in ex ...
... an attack of PAT. In most cases PAT affects more women than men; most often develops at age 20-30 but can occur at any age; occurs most often in those that are very anxious, under stress or physically fatigued; occurs in those with an overactive thyroid gland; those who use caffeine or alcohol in ex ...
IOSR Journal of Dental and Medical Sciences (IOSR-JDMS)
... without effective atrial contraction. Clinically the following features are seen: irregularly irregular pulse, apexpulse deficit more than 10 per minute, absent ‘a’ waves in JVP, first heart sound of varying intensities. Electrocardiographically, small irregular baseline undulations of variable ampl ...
... without effective atrial contraction. Clinically the following features are seen: irregularly irregular pulse, apexpulse deficit more than 10 per minute, absent ‘a’ waves in JVP, first heart sound of varying intensities. Electrocardiographically, small irregular baseline undulations of variable ampl ...
managing afib - Mended Hearts
... Medications: Medications can help prevent clots or control your heart rate or rhythm. Anticoagulants and antiplatelet medications reduce your stroke risk by preventing clots. However, they can cause bleeding and other serious or unpleasant side effects. The most common anticoagulant is warfarin (Cou ...
... Medications: Medications can help prevent clots or control your heart rate or rhythm. Anticoagulants and antiplatelet medications reduce your stroke risk by preventing clots. However, they can cause bleeding and other serious or unpleasant side effects. The most common anticoagulant is warfarin (Cou ...
heart rate
... When closed, the cusps fall into the center of the pulmonary trunk and aorta to prevent backflow of blood from the vessel into the ventricle When the ventricles contract, pressure in them increaseswhen ventricular pressure exceeds pressure in the aorta and pulmonary trunk, the semilunar valves o ...
... When closed, the cusps fall into the center of the pulmonary trunk and aorta to prevent backflow of blood from the vessel into the ventricle When the ventricles contract, pressure in them increaseswhen ventricular pressure exceeds pressure in the aorta and pulmonary trunk, the semilunar valves o ...
SCREENING FOR AF - Atrial fibrillation information
... Few patients have absolute contraindications for anticoagulation, but the bleeding risk should be assessed individually. Risk factors for increased bleeding include age >75years (but also the highest stroke risk), patients taking antiplatelet drugs/ NSAIDS, a history of previous bleeding or poor INR ...
... Few patients have absolute contraindications for anticoagulation, but the bleeding risk should be assessed individually. Risk factors for increased bleeding include age >75years (but also the highest stroke risk), patients taking antiplatelet drugs/ NSAIDS, a history of previous bleeding or poor INR ...
ECG Dysrhythmias
... Asystole is the absence of electrical activity in the venticles Asystole usually results from a prolonged period of cardiac arrest without resuscitation Asystole usually means the patient’s life has ended ...
... Asystole is the absence of electrical activity in the venticles Asystole usually results from a prolonged period of cardiac arrest without resuscitation Asystole usually means the patient’s life has ended ...
EKG
... First name is Atrial – focus is from the atria Last name is Flutter because of characteristic biphasic flutter waves (sawtooth) Irritable foci in the atria fire constantly Atrial rates are 250-350, usually regular Ventricular rate are slower, regular PR interval not measurable QRS is usually normal ...
... First name is Atrial – focus is from the atria Last name is Flutter because of characteristic biphasic flutter waves (sawtooth) Irritable foci in the atria fire constantly Atrial rates are 250-350, usually regular Ventricular rate are slower, regular PR interval not measurable QRS is usually normal ...
Correspondence Latent pre-excitation: exposure of
... tricular node who were matched for anterograde through the His-Purkinje system." Concealed conrefractory period showed similar ventricular rates duction of atrial extrasystoles can be explained on the during atrial fibrillation. They had expected a slower basis of hyperpolarisation of the pacemaker ...
... tricular node who were matched for anterograde through the His-Purkinje system." Concealed conrefractory period showed similar ventricular rates duction of atrial extrasystoles can be explained on the during atrial fibrillation. They had expected a slower basis of hyperpolarisation of the pacemaker ...
Life Threatening Arrhythmia and Management
... Bradycardia Defined as a heart rate of <60 beats per minute A slow heart rate may be physiologically normal for some patients While initiating treatment, evaluate the clinical status of the patient and identify potential reversible causes ...
... Bradycardia Defined as a heart rate of <60 beats per minute A slow heart rate may be physiologically normal for some patients While initiating treatment, evaluate the clinical status of the patient and identify potential reversible causes ...
SA node
... • P wave: When the wave of depolarization spreads across the atria, P wave is recorded in ECG. • P wave refers the atrial excitation (atrial depolarization). • When the wave of excitation moves slowly through the AV node and crosses from atria to ventricles via the bundle of His, a quiet brief peri ...
... • P wave: When the wave of depolarization spreads across the atria, P wave is recorded in ECG. • P wave refers the atrial excitation (atrial depolarization). • When the wave of excitation moves slowly through the AV node and crosses from atria to ventricles via the bundle of His, a quiet brief peri ...
Circulation support part 1 dr. Horáček
... failure to provide transport and regulatory functions • heart failure: failure to pump the amount of blood necessary to satisfy metabolic needs of tissues – injury of : myocardium, valves, arrhythmias, support tissues – myocardial failure: injury due to ischaemia/reperfusion, inflammation, trauma, m ...
... failure to provide transport and regulatory functions • heart failure: failure to pump the amount of blood necessary to satisfy metabolic needs of tissues – injury of : myocardium, valves, arrhythmias, support tissues – myocardial failure: injury due to ischaemia/reperfusion, inflammation, trauma, m ...
Arrhythmic Complications of MI
... coronary artery – Higher risk of developing complete AV block is heightened – Mortality is mostly related to the amount of muscle loss – In 40% of patients, a trifascicular block progresses to a complete heart blockrate of progression unknown ...
... coronary artery – Higher risk of developing complete AV block is heightened – Mortality is mostly related to the amount of muscle loss – In 40% of patients, a trifascicular block progresses to a complete heart blockrate of progression unknown ...
Sinus Bradycardia
... • When an impulse originates anywhere in the atria (SA node, atrial cells, AV node, Bundle of His) and then is conducted normally through the ventricles, the QRS will be narrow (0.08 - 0.12 s). ...
... • When an impulse originates anywhere in the atria (SA node, atrial cells, AV node, Bundle of His) and then is conducted normally through the ventricles, the QRS will be narrow (0.08 - 0.12 s). ...
ASDs in Cats - Veterinary Specialty Services
... heart, as well as blood flow through its chambers. In the case of an ASD, observation of blood flow through a hole in the atrial septum leads to this specific diagnosis. Evaluation of the size of the ASD as well as the size of the right atrium and right ventricle (the pumping chamber just downstream ...
... heart, as well as blood flow through its chambers. In the case of an ASD, observation of blood flow through a hole in the atrial septum leads to this specific diagnosis. Evaluation of the size of the ASD as well as the size of the right atrium and right ventricle (the pumping chamber just downstream ...
Intrinsic Conducting System
... your heart to beat (contract). This electrical signal begins in the ...
... your heart to beat (contract). This electrical signal begins in the ...
Atrial Septal Defects in Dogs - Veterinary Specialty Services
... stethoscope. The murmur is described according to its loudness and where it is heard best on the chest. If congestive heart failure is already present at the time of first examination, other findings may include abdominal distension, rapid or labored breathing, or subcutaneous edema. Diagnosis of an ...
... stethoscope. The murmur is described according to its loudness and where it is heard best on the chest. If congestive heart failure is already present at the time of first examination, other findings may include abdominal distension, rapid or labored breathing, or subcutaneous edema. Diagnosis of an ...
the cardiac cycle - Annammal College of Nursing
... in the arteries begins to flow back toward the ventricles and causes the semilunar valves to close. This marks the end of ...
... in the arteries begins to flow back toward the ventricles and causes the semilunar valves to close. This marks the end of ...
Chapter 12, Part 2 – The Heart The Heart is a Double Pump
... Electrical syncytium: a group of cells synchronized to work together to as a single ...
... Electrical syncytium: a group of cells synchronized to work together to as a single ...
Principles of Vectorial Analysis of EKG`s (cont`d)
... In figure B, the depolarization vector is large because half of the ventricle is depolarized. Lead II should be largest voltage when compared to I and III when the mean vector is 60o. In figure C, left side is slower to depolarize. In figure D, the last part to depolarize is near the left base of th ...
... In figure B, the depolarization vector is large because half of the ventricle is depolarized. Lead II should be largest voltage when compared to I and III when the mean vector is 60o. In figure C, left side is slower to depolarize. In figure D, the last part to depolarize is near the left base of th ...
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.