Atrial Fibrillation, Atrioventricular Nodal Ablation and Biventricular
... achieved by AV node ablation is not as great as it might be, in view of the negative results of pacing from the right ventricular apex. In recent years, in patients with dilated cardiomyopathy, sinus rhythm and disturbances of intraventricular conduction, cardiac resynchronisation through biventricu ...
... achieved by AV node ablation is not as great as it might be, in view of the negative results of pacing from the right ventricular apex. In recent years, in patients with dilated cardiomyopathy, sinus rhythm and disturbances of intraventricular conduction, cardiac resynchronisation through biventricu ...
Arrhythmia Service - Northern Devon Healthcare NHS Trust
... atrium. These include atrial fibrillation, atrial flutter and nodal re-entry tachycardias. 3. Ventricular tachycardias are fast heart rhythms that originate in the ventricle. These include ventricular tachycardia and fibrillation. 4. Brady-arrhythmias are slow heart rhythms caused by delays in the e ...
... atrium. These include atrial fibrillation, atrial flutter and nodal re-entry tachycardias. 3. Ventricular tachycardias are fast heart rhythms that originate in the ventricle. These include ventricular tachycardia and fibrillation. 4. Brady-arrhythmias are slow heart rhythms caused by delays in the e ...
Slide 1 - AccessCardiology
... 1 (dashed line, obtained with 50% block of the calcium current). C. and D. Spiral wave behavior several seconds after initiating a spiral wave in homogeneous two-dimensional tissue. All cells are identical, with either a steep (C) or shallow (D) APD restitution slope. E. and F. Optically measured su ...
... 1 (dashed line, obtained with 50% block of the calcium current). C. and D. Spiral wave behavior several seconds after initiating a spiral wave in homogeneous two-dimensional tissue. All cells are identical, with either a steep (C) or shallow (D) APD restitution slope. E. and F. Optically measured su ...
Cardiomyopathy
... The natural history is one of progressive deterioration with approximately 50% mortality in 2-3 years. The usual causes of demise include ventricular arrhythmias, systemic embolization and progressive heart failure. Biventricular pacing may be helpful in patients with a QRS interval > 130 msecs to i ...
... The natural history is one of progressive deterioration with approximately 50% mortality in 2-3 years. The usual causes of demise include ventricular arrhythmias, systemic embolization and progressive heart failure. Biventricular pacing may be helpful in patients with a QRS interval > 130 msecs to i ...
FASMED - Sudden Cardiac Death
... Modification of activity in the heat and at altitude Appropriate strength and conditioning programs developed by qualified strength and conditioning coaches Punitive exercise and conditioning sessions be prohibited Early recognition of athletes who are struggling, so they can immediately be allowed ...
... Modification of activity in the heat and at altitude Appropriate strength and conditioning programs developed by qualified strength and conditioning coaches Punitive exercise and conditioning sessions be prohibited Early recognition of athletes who are struggling, so they can immediately be allowed ...
Heart Lecture Test Questions – Set 2
... b. allows one-way conduction from atria to ventricles c. permits communication between atria and ventricular conducting system d. can act as a secondary pacemaker if a blockage occurs with the internodal pathways e. all of the above ...
... b. allows one-way conduction from atria to ventricles c. permits communication between atria and ventricular conducting system d. can act as a secondary pacemaker if a blockage occurs with the internodal pathways e. all of the above ...
Body Surface and Intracardiac Mapping of SAI QRST Integral
... Is there a better way to predict arrhythmias? We know that SAI QRST is a better clinical marker ...
... Is there a better way to predict arrhythmias? We know that SAI QRST is a better clinical marker ...
Lesson 5
... the atrial component to ventricular filling (atrial kick) that is due to atrial fibrillation or flutter. In individuals with ventricular arrhythmias, antiarrhythmic agents are often still in use to suppress arrhythmias. In this case, the patient may have frequent arrhythmic events or be at high risk ...
... the atrial component to ventricular filling (atrial kick) that is due to atrial fibrillation or flutter. In individuals with ventricular arrhythmias, antiarrhythmic agents are often still in use to suppress arrhythmias. In this case, the patient may have frequent arrhythmic events or be at high risk ...
I. Inotropic Drugs.
... that increases renal blood flow and consequently glomerular filtration rate is increased; This results in down-regulation of the reninangiotensin-aldosterone (RAA) system that is stimulated in HF; Hence, the edema (pulmonary and peripheral) is decreased in response to CGs as a result of the inhibiti ...
... that increases renal blood flow and consequently glomerular filtration rate is increased; This results in down-regulation of the reninangiotensin-aldosterone (RAA) system that is stimulated in HF; Hence, the edema (pulmonary and peripheral) is decreased in response to CGs as a result of the inhibiti ...
Pacing Concepts
... • Sensing of intramyocardial electrical activity • Current pacemaker technology • Pulse generator ...
... • Sensing of intramyocardial electrical activity • Current pacemaker technology • Pulse generator ...
THE CARDIAC CYCLE
... the valve, so atrial contraction will force blood through the narrowed opening between the chambers. ...
... the valve, so atrial contraction will force blood through the narrowed opening between the chambers. ...
ePapyrus PDF Document
... Department of Pediatrics,Grown-up Congenital Heart Clinic, Cardiac and Vascular Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Irwon-dong, Gangnam-gu, Seoul 135-710, Korea ...
... Department of Pediatrics,Grown-up Congenital Heart Clinic, Cardiac and Vascular Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Irwon-dong, Gangnam-gu, Seoul 135-710, Korea ...
Cardiac implantable devices - Royal Academy of Engineering
... Ventricular fibrillation is the fast chaotic heart activity which results in no pumping activity from the heart. This can cause sudden cardiac death. Tachycardia is where the heart goes into an unnatural fast heart rate, normally classed as above 100 beats per minute (but often much higher). This ca ...
... Ventricular fibrillation is the fast chaotic heart activity which results in no pumping activity from the heart. This can cause sudden cardiac death. Tachycardia is where the heart goes into an unnatural fast heart rate, normally classed as above 100 beats per minute (but often much higher). This ca ...
WHAT IS ATRIAL FIBRILLATION?
... paroxysmal atrial fibrillation (where the arrhythmia comes and goes without treatment) often see a reduction in atrial fibrillation after a pacemaker is implanted if their normal heart rhythm is slow. Catheter Ablation—If medication is not enough, a procedure called ablation may be an option. In abl ...
... paroxysmal atrial fibrillation (where the arrhythmia comes and goes without treatment) often see a reduction in atrial fibrillation after a pacemaker is implanted if their normal heart rhythm is slow. Catheter Ablation—If medication is not enough, a procedure called ablation may be an option. In abl ...
Reproducibility of left ventricular myocardial volume and mass
... SEE = 5.5 ml. Similar results were obtamed after tnfarctton. Maddahi et al. (81 demonstrated that the two measurements in dogs between end-systole and end-diastole were not significantly different from each other (p > 0.W. lwasaki (21) using thedynamic spatial reconstructor tanother type ofultrafast ...
... SEE = 5.5 ml. Similar results were obtamed after tnfarctton. Maddahi et al. (81 demonstrated that the two measurements in dogs between end-systole and end-diastole were not significantly different from each other (p > 0.W. lwasaki (21) using thedynamic spatial reconstructor tanother type ofultrafast ...
Atrial fibrillation - patient information
... Atrial fibrillation is a heart condition that causes an irregular and often abnormally fast heart rate. A normal heart rate should be regular and between 60 and 100 beats a minute when you’re resting. You can measure your heart rate by feeling the pulse in your neck or wrist. In atrial fibrillation, ...
... Atrial fibrillation is a heart condition that causes an irregular and often abnormally fast heart rate. A normal heart rate should be regular and between 60 and 100 beats a minute when you’re resting. You can measure your heart rate by feeling the pulse in your neck or wrist. In atrial fibrillation, ...
Post Operative Clinical Improvement in the Absence of Reverse
... inhibitors or angiotensin receptor blockers (ARBs)] are useful in the presence of hypertension when surgery is contraindicated, or LV dysfunction persists postoperatively. • A positive effect of these agents, or dihydropyridine calcium channel blockers, in asymptomatic patients without hypertension ...
... inhibitors or angiotensin receptor blockers (ARBs)] are useful in the presence of hypertension when surgery is contraindicated, or LV dysfunction persists postoperatively. • A positive effect of these agents, or dihydropyridine calcium channel blockers, in asymptomatic patients without hypertension ...
The Sinus Node as the Pacemaker of the Heart
... 80/min (AV nodal fibers 40-60/min, & Purkinje fibers 1540/min Located in superior posterolateral wall of the right atrium each time the SA node discharges, its impulse is conducted ...
... 80/min (AV nodal fibers 40-60/min, & Purkinje fibers 1540/min Located in superior posterolateral wall of the right atrium each time the SA node discharges, its impulse is conducted ...
Constrictive pericarditis after tuberculosis in
... The patient is a 73-year-old man with a known history of atrial fibrillation, pacemaker implantation due to total arteriovenous block, chronic renal failure (with an estimated glomerular filtration rate of 58.2 ml/min per 1.73 m2 according to the ‘‘modification of diet in renal disease’’ formula) an ...
... The patient is a 73-year-old man with a known history of atrial fibrillation, pacemaker implantation due to total arteriovenous block, chronic renal failure (with an estimated glomerular filtration rate of 58.2 ml/min per 1.73 m2 according to the ‘‘modification of diet in renal disease’’ formula) an ...
Ciprofloxacin-induced paroxysmal atrial fibrillation
... increased QT and QTC interval, consequently prolongation of action potential duration. This modification increases the risk of the onset of malignant arrhythmias such as torsade de pointes5. As reported by Adikwu and Brambaifa Ciprofloxacin induced cardiotoxic effect could be associated with blockin ...
... increased QT and QTC interval, consequently prolongation of action potential duration. This modification increases the risk of the onset of malignant arrhythmias such as torsade de pointes5. As reported by Adikwu and Brambaifa Ciprofloxacin induced cardiotoxic effect could be associated with blockin ...
Uncontrolled ventricular rate in atrial fibrillation - Heart
... of low right atrial fibrillation. Several different combinations of atrial electrical events and dissimilar rhythms may present with coarse atrial fibrillation on the scalar electrocardiogram (Zipes and DeJoseph, 1973; Leier and Schaal, 1975, 1977). It is believed that in dissimilar atrial rhythms t ...
... of low right atrial fibrillation. Several different combinations of atrial electrical events and dissimilar rhythms may present with coarse atrial fibrillation on the scalar electrocardiogram (Zipes and DeJoseph, 1973; Leier and Schaal, 1975, 1977). It is believed that in dissimilar atrial rhythms t ...
Atrial Fibrillation Handout
... Atrial Fibrillation Peter Santucci, MD Revised May, 2008 Atrial fibrillation (AF) is an irregular, disorganized rhythm characterized by a lack of organized mechanical atrial activity. The atrial rate is commonly >300 bpm. It is the most common sustained arrhythmia. Consequences: • Irregularity resul ...
... Atrial Fibrillation Peter Santucci, MD Revised May, 2008 Atrial fibrillation (AF) is an irregular, disorganized rhythm characterized by a lack of organized mechanical atrial activity. The atrial rate is commonly >300 bpm. It is the most common sustained arrhythmia. Consequences: • Irregularity resul ...
Medtronic-Supported Clinical Trial Shows ICD Patients Less
... MVP dramatically reduces unnecessary right ventricular pacing, meaning it does not deliver low-level pacing pulses to the heart when it is beating normally. The trial aimed to establish whether atrial-based, dual chamber, managed ventricular pacing set at 60 beats per minute (MVP mode) is equivalent ...
... MVP dramatically reduces unnecessary right ventricular pacing, meaning it does not deliver low-level pacing pulses to the heart when it is beating normally. The trial aimed to establish whether atrial-based, dual chamber, managed ventricular pacing set at 60 beats per minute (MVP mode) is equivalent ...
Ventricular fibrillation
Ventricular fibrillation (V-fib or VF) is a condition in which there is uncoordinated contraction of the cardiac muscle of the ventricles in the heart, making them quiver rather than contract properly. Ventricular fibrillation is the most commonly identified arrhythmia in cardiac arrest patients. While there is some activity, the lay person is usually unable to detect it by palpating (feeling) the major pulse points of the carotid and femoral arteries. Such an arrhythmia is only confirmed by electrocardiography. Ventricular fibrillation is a medical emergency that requires prompt Advanced Life Support interventions. If this arrhythmia continues for more than a few seconds, it will likely degenerate further into asystole (""flatline""). This condition results in cardiogenic shock and cessation of effective blood circulation. As a consequence, sudden cardiac death (SCD) will result in a matter of minutes. If the patient is not revived after a sufficient period (within roughly 5 minutes at room temperature), the patient could sustain irreversible brain damage and possibly become brain-dead, due to the effects of cerebral hypoxia. On the other hand, death often occurs if sinus rhythm is not restored within 90 seconds of the onset of VF, especially if it has degenerated further into asystole.