For paroxysmal or persistent AFib patients new to rhythm control
... MULTAQ is contraindicated in patients with symptomatic heart failure with recent decompensation requiring hospitalization or NYHA Class IV heart failure. MULTAQ doubles the risk of death in these patients. MULTAQ is contraindicated in patients in atrial fibrillation (AFib) who will not or cannot be ...
... MULTAQ is contraindicated in patients with symptomatic heart failure with recent decompensation requiring hospitalization or NYHA Class IV heart failure. MULTAQ doubles the risk of death in these patients. MULTAQ is contraindicated in patients in atrial fibrillation (AFib) who will not or cannot be ...
Pacemaker Syndrome During Managed Ventricular
... DDD (R) pacing mode despite a second-degree type II AV block. During MVP, the AAI(R) mode operates with a dynamic atrial refractory period (ARP) set either to 75% of the R–R cycle length if heart rate is 75 bpm or faster, or to 600 ms if heart rate is slower than 75 bpm. The purpose of dynamic ARP i ...
... DDD (R) pacing mode despite a second-degree type II AV block. During MVP, the AAI(R) mode operates with a dynamic atrial refractory period (ARP) set either to 75% of the R–R cycle length if heart rate is 75 bpm or faster, or to 600 ms if heart rate is slower than 75 bpm. The purpose of dynamic ARP i ...
A national survey of the prevalence, incidence, primary - Heart
... increasing2 because population age is increasing3 and survival from conditions predisposing to AF (eg, coronary heart disease) is improving.4 5 AF causes significant morbidity and mortality, including heart failure (HF) and stroke—two of the most disabling and costly cardiovascular conditions known. ...
... increasing2 because population age is increasing3 and survival from conditions predisposing to AF (eg, coronary heart disease) is improving.4 5 AF causes significant morbidity and mortality, including heart failure (HF) and stroke—two of the most disabling and costly cardiovascular conditions known. ...
ECG Monitoring in Theatre - e-safe
... The specialised cardiac conducting system (figure 2) consists of : The Sinoatrial (SA) node, internodal pathways, Atrioventricular (AV) node, bundle of HIS with right and left bundle branches and the Purkinje system. The left bundle branch also divides into anterior and posterior fascicles. Conducti ...
... The specialised cardiac conducting system (figure 2) consists of : The Sinoatrial (SA) node, internodal pathways, Atrioventricular (AV) node, bundle of HIS with right and left bundle branches and the Purkinje system. The left bundle branch also divides into anterior and posterior fascicles. Conducti ...
MEDL-408V-001 Rene Maier
... participate in class discussions and activities. Consistent attendance and participation is critical for success. • The college provides many services to students; please contact the Registration department at either campus. Please note that not all services may apply to Continuing Education (CE) st ...
... participate in class discussions and activities. Consistent attendance and participation is critical for success. • The college provides many services to students; please contact the Registration department at either campus. Please note that not all services may apply to Continuing Education (CE) st ...
Post-traumatic Wolff-Parkinson-White syndrome
... delta wave in V1 with R>S and positive in aVF). The electrophysiological study was also performed, with the right femoral vein being approached by using three catheters: 7F dodecapolar placed with the distal tip in the coronary sinus, 6F quadripolar placed in hisian and one mapping catheter. The atr ...
... delta wave in V1 with R>S and positive in aVF). The electrophysiological study was also performed, with the right femoral vein being approached by using three catheters: 7F dodecapolar placed with the distal tip in the coronary sinus, 6F quadripolar placed in hisian and one mapping catheter. The atr ...
Heart arrhythmias: Understanding abnormal
... beating too fast. Atrial flutter is usually not life-threatening but can still cause chest pain, faintness or more serious heart problems. Atrial fibrillation is the most common form of SVT. It is when ‘waves’ of uncontrolled electrical signals, rather than the normal regulated signals, travel throu ...
... beating too fast. Atrial flutter is usually not life-threatening but can still cause chest pain, faintness or more serious heart problems. Atrial fibrillation is the most common form of SVT. It is when ‘waves’ of uncontrolled electrical signals, rather than the normal regulated signals, travel throu ...
SECTION 1: CIRCULATORY: Pulse: Apical Monitoring
... 4. Warm the diaphragm or bell of the stethoscope in your hand. Placing a cold stethoscope against the skin may startle the patient and increase the heart rate. Keep in mind that the bell transmits lowpitched sounds more effectively than the diaphragm. 5. Place the diaphragm or bell of the stethoscop ...
... 4. Warm the diaphragm or bell of the stethoscope in your hand. Placing a cold stethoscope against the skin may startle the patient and increase the heart rate. Keep in mind that the bell transmits lowpitched sounds more effectively than the diaphragm. 5. Place the diaphragm or bell of the stethoscop ...
Pacemakers and AICD`s
... Bradycardia Sinus node discharges at a rate < 60 bpm Decreased CO may occur ...
... Bradycardia Sinus node discharges at a rate < 60 bpm Decreased CO may occur ...
ELECTROCARDIOGRAM (ECG)
... If current is flowing towards the recording electrode, we get upward deflection. If current is flowing away from the recording electrode, we get downward deflection. ...
... If current is flowing towards the recording electrode, we get upward deflection. If current is flowing away from the recording electrode, we get downward deflection. ...
Protocol for the management of atrial fibrillation in primary care
... with a history of bleeding (such as peptic ulcer or cerebral haemorrhage) with a history of poorly controlled anticoagulation therapy. Antithrombotic therapy for persistent AF · Before cardioversion, maintain patients on therapeutic anticoagulation with warfarin (INR 2.5, range 2.0 to 3.0) ...
... with a history of bleeding (such as peptic ulcer or cerebral haemorrhage) with a history of poorly controlled anticoagulation therapy. Antithrombotic therapy for persistent AF · Before cardioversion, maintain patients on therapeutic anticoagulation with warfarin (INR 2.5, range 2.0 to 3.0) ...
Catheter Ablation in the Treatment of Atrial Fibrillation
... • To date there is no evidence that treatment of AF by ablation improves mortality, although there are uncontrolled data suggesting that this may be the case. • Therefore, asymptomatic patients should not be offered curative ablation of AF, except in the case of those patients undergoing cardiac sur ...
... • To date there is no evidence that treatment of AF by ablation improves mortality, although there are uncontrolled data suggesting that this may be the case. • Therefore, asymptomatic patients should not be offered curative ablation of AF, except in the case of those patients undergoing cardiac sur ...
Atrial fibrillation in women
... Presentation of AF in women Atrial fibrillation has an important impact on morbidity and mortality. With regard to mortality, population-based data from the Framingham Heart Study indicated that the risk of death in the setting of AF was increased in individuals with AF with a risk factor-adjusted o ...
... Presentation of AF in women Atrial fibrillation has an important impact on morbidity and mortality. With regard to mortality, population-based data from the Framingham Heart Study indicated that the risk of death in the setting of AF was increased in individuals with AF with a risk factor-adjusted o ...
electrophysiology study and radiofrequency ablation
... Atrial Flutter: Atrial flutter is caused by an abnormal circuit in the right atrium which leads to very rapid regular atrial contractions at 300 per minute – fortunately, usually only every second beat goes down to the ventricles and the heart rate is around 150 per minute. In some cases the heart r ...
... Atrial Flutter: Atrial flutter is caused by an abnormal circuit in the right atrium which leads to very rapid regular atrial contractions at 300 per minute – fortunately, usually only every second beat goes down to the ventricles and the heart rate is around 150 per minute. In some cases the heart r ...
Effective Closure of the Mitral Valve without Atrial Systole
... for closure of the atrioventricular valves under various physiologic and pathologic circumstances have not yet been completely defined. The factors considered to be of importance have been summarized by McKusick' and include (1) elevation of pressure in the ventricle to a level greater than that in ...
... for closure of the atrioventricular valves under various physiologic and pathologic circumstances have not yet been completely defined. The factors considered to be of importance have been summarized by McKusick' and include (1) elevation of pressure in the ventricle to a level greater than that in ...
Multi-Scale Models The Heart as Example - Home | CISB-ECN
... 2. Calcium triggers a mechanism called calcium-induced calcium release: results in the flow of large amounts of calcium from the SR into cytosol 3. Calcium binds to troponin; leads to sliding action of the myfibrils actin and myosin 4. Myocyte contracts 5. Calcium unbinds and is pumped back into the ...
... 2. Calcium triggers a mechanism called calcium-induced calcium release: results in the flow of large amounts of calcium from the SR into cytosol 3. Calcium binds to troponin; leads to sliding action of the myfibrils actin and myosin 4. Myocyte contracts 5. Calcium unbinds and is pumped back into the ...
Lecture: Heart Physiology
... contraction; AV node and bundle must work for ventricular contractions since cells in the SA node has the fastest autorhythmic rate (70-80 per minute), it drives all other autorhythmic centers in a normal heart arrhythmias - uncoordinated heart contractions fibrillation - rapid and irregular contrac ...
... contraction; AV node and bundle must work for ventricular contractions since cells in the SA node has the fastest autorhythmic rate (70-80 per minute), it drives all other autorhythmic centers in a normal heart arrhythmias - uncoordinated heart contractions fibrillation - rapid and irregular contrac ...
Chapter 19
... (right AV valve) atrioventricular node (AV) -> atrioventricular bundle (bundle of His) -> right & left bundle of His branches -> Purkinje fibers of ventricular walls (from SA through complete heart contraction = 220 ms = 0.22 s) a. sinoatrial node (SA node) "the pacemaker" - has the fastest autorhyt ...
... (right AV valve) atrioventricular node (AV) -> atrioventricular bundle (bundle of His) -> right & left bundle of His branches -> Purkinje fibers of ventricular walls (from SA through complete heart contraction = 220 ms = 0.22 s) a. sinoatrial node (SA node) "the pacemaker" - has the fastest autorhyt ...
Trevor L. Jenkins, MD UH Harrington Heart & Vascular Institute
... University Hospitals Case Medical Center Case Western Reserve School of Medicine ...
... University Hospitals Case Medical Center Case Western Reserve School of Medicine ...
electrocardiogram (ecg)
... If current is flowing towards the recording electrode, we get upward deflection. If current is flowing away from the recording electrode, we get downward deflection. ...
... If current is flowing towards the recording electrode, we get upward deflection. If current is flowing away from the recording electrode, we get downward deflection. ...
Rhythm & 12 Lead EKG Review
... (Long PR intervals; periodic dropped beat) Consider need to apply TCP and then turn on if patient symptomatic ...
... (Long PR intervals; periodic dropped beat) Consider need to apply TCP and then turn on if patient symptomatic ...
ECG Assignment
... segment, the heart would have little time to generate force. Why might this explain why a person with a normal heart rate, and a short ST-segment might be chronically tired and have a smaller than normal cardiac output? E) RR-Interval: time between the same point on two adjacent QRS complexes….typic ...
... segment, the heart would have little time to generate force. Why might this explain why a person with a normal heart rate, and a short ST-segment might be chronically tired and have a smaller than normal cardiac output? E) RR-Interval: time between the same point on two adjacent QRS complexes….typic ...
Targeting atrioventricular differences in ion channel properties for
... (100 mM) to selectively block IKur (for another 10 min). The perfusate containing the carbachol and/or 4-AP was never re-cycled. Movies of di-4-ANNEPS (10 mM) fluorescence during AF were obtained from the left atrium (LA) and the right atrium (RA) using a Little Joe CCD camera (Scimeasure; 80 by 80 ...
... (100 mM) to selectively block IKur (for another 10 min). The perfusate containing the carbachol and/or 4-AP was never re-cycled. Movies of di-4-ANNEPS (10 mM) fluorescence during AF were obtained from the left atrium (LA) and the right atrium (RA) using a Little Joe CCD camera (Scimeasure; 80 by 80 ...
ECGs and arrhythmia identification
... of -90mV. Two transport mechanisms are responsible for maintaining the resting membrane potential: the sodium pump and potassium pump. The sodium and potassium pump uses ATP (energy) and transports ions against their normal energy gradients by pumping Na+ ions extracellularly and K+ ions intracellul ...
... of -90mV. Two transport mechanisms are responsible for maintaining the resting membrane potential: the sodium pump and potassium pump. The sodium and potassium pump uses ATP (energy) and transports ions against their normal energy gradients by pumping Na+ ions extracellularly and K+ ions intracellul ...
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.