PDF - Circulation: Arrhythmia and Electrophysiology
... bradycardia, atrioventricular block, and prolonged QT interval. Hypothyroidism causing myxedema cardiomyopathy has been reported as a cause of increased ventricular pacing threshold and complete exit block.1 A previous report by Patton et al describes an isolated atrial lead dysfunction in a young w ...
... bradycardia, atrioventricular block, and prolonged QT interval. Hypothyroidism causing myxedema cardiomyopathy has been reported as a cause of increased ventricular pacing threshold and complete exit block.1 A previous report by Patton et al describes an isolated atrial lead dysfunction in a young w ...
Computational Modeling of Human Fetal Normal Sinus Rhythm and
... node (AVN), Purkinje fibres (PF) and ventricle are overlaid on space-time display of membrane potential. logical drifts in [ion]intra, periodicity is estimated during the last 6 s of 10s simulation. ...
... node (AVN), Purkinje fibres (PF) and ventricle are overlaid on space-time display of membrane potential. logical drifts in [ion]intra, periodicity is estimated during the last 6 s of 10s simulation. ...
Atrial Fibrillation - Royal College of Emergency Medicine
... Reduced ventricular filling also leads to an overall reduction in cardiac output and even with a controlled ventricular rate the cardiac output can decrease by 10-20%. This may not be significant in patients with otherwise normal hearts but can result in pump failure in patients with other cardiac a ...
... Reduced ventricular filling also leads to an overall reduction in cardiac output and even with a controlled ventricular rate the cardiac output can decrease by 10-20%. This may not be significant in patients with otherwise normal hearts but can result in pump failure in patients with other cardiac a ...
pdf Arctic Front Advance™ Cardiac Cryoballoon
... The Arctic Front Advance System has been used to treat more than 160,000 patients in 1,000 centers across more than 50 countries. The technologies currently offered include: The Arctic Front Advance Cryoablation Catheter, used to isolate the pulmonary veins; The FlexCath Advance Steerable Sheath ...
... The Arctic Front Advance System has been used to treat more than 160,000 patients in 1,000 centers across more than 50 countries. The technologies currently offered include: The Arctic Front Advance Cryoablation Catheter, used to isolate the pulmonary veins; The FlexCath Advance Steerable Sheath ...
Ventricular tachycardia of right bundle-branch block
... man et al.' with this type of VT,2 were found to show similar features of mitral valve prolapse as our patient. One of them died suddenly at the age of nineteen-16 months after an unsuccessful attempt of cryoablation of the VT focus. Two additional patients with mitral valve prolapse were described ...
... man et al.' with this type of VT,2 were found to show similar features of mitral valve prolapse as our patient. One of them died suddenly at the age of nineteen-16 months after an unsuccessful attempt of cryoablation of the VT focus. Two additional patients with mitral valve prolapse were described ...
Stop Randomizing All Cardiac Arrests
... A similar plea to mine, focused on not randomizing patients with an initial rhythm of asystole, was published by Kreutziger and Wenzel3 in 2009. As they point out, rarely is an asystolic arrest going to respond to treatment. Sinus arrest and heart block are rare and respond frequently to chest compr ...
... A similar plea to mine, focused on not randomizing patients with an initial rhythm of asystole, was published by Kreutziger and Wenzel3 in 2009. As they point out, rarely is an asystolic arrest going to respond to treatment. Sinus arrest and heart block are rare and respond frequently to chest compr ...
Sinus Rhythms - Beaumont Emergency Medicine
... An escape rhythm will drive the ventricles If the escape rhythm originates in the AV junction, the ventricular rate will be in the range of 40-60 with a narrow QRS If the escape rhythm originates in the ventricles, the ventricular rate will be in the range of 20-40 with a wide QRS ...
... An escape rhythm will drive the ventricles If the escape rhythm originates in the AV junction, the ventricular rate will be in the range of 40-60 with a narrow QRS If the escape rhythm originates in the ventricles, the ventricular rate will be in the range of 20-40 with a wide QRS ...
Hemodynamically unstable wide QRS complex tachycardia
... QRS complex it can be divided into narrow QRS (<120 ms) and wide QRS tachycardia (>120 ms). Narrow QRS tachycardia is always supraventricular which means that its source is proximal to the bundle of His, while wide QRS tachycardia can be ventricular (source is in ventricle, distal to the bundle of H ...
... QRS complex it can be divided into narrow QRS (<120 ms) and wide QRS tachycardia (>120 ms). Narrow QRS tachycardia is always supraventricular which means that its source is proximal to the bundle of His, while wide QRS tachycardia can be ventricular (source is in ventricle, distal to the bundle of H ...
Pacing Non-Capture in a Child with Compound Heterozygous
... first degree AV block, right ventricular conduction delay, nonspecific ST segment changes and QTc ranging between 470 510 milliseconds (Figure 1). Echocardiography demonstrated increased left ventricular trabeculations with non-compacted to compacted ratio of >2:1 with low normal systolic function. ...
... first degree AV block, right ventricular conduction delay, nonspecific ST segment changes and QTc ranging between 470 510 milliseconds (Figure 1). Echocardiography demonstrated increased left ventricular trabeculations with non-compacted to compacted ratio of >2:1 with low normal systolic function. ...
Document
... blocked • the wave of conduction from the normal branch may enter the damaged branch retrogradely and reappear in the normal branch • this completes a re-entry ...
... blocked • the wave of conduction from the normal branch may enter the damaged branch retrogradely and reappear in the normal branch • this completes a re-entry ...
الشريحة 1
... digoxin, tradename LanoxinTM, an extract from the leaves of Digitalis lanata Ehrh., or sometimes as digitoxin, from foxglove or the leaves of Digitalis purpurea L. ...
... digoxin, tradename LanoxinTM, an extract from the leaves of Digitalis lanata Ehrh., or sometimes as digitoxin, from foxglove or the leaves of Digitalis purpurea L. ...
HOCMP - rasimenar.com
... • Signs of both LHF and RHF are common . • Apical beat: Is replaced left, lateral and inferiorly because of LV dilatation. Left sternal impuls are palpable because of RV dilatation. • JVP: Is raised, and may show systolic wave of TR. (large V wave). • MR/TR: Both MR and TR murmurs of I – III/IV degr ...
... • Signs of both LHF and RHF are common . • Apical beat: Is replaced left, lateral and inferiorly because of LV dilatation. Left sternal impuls are palpable because of RV dilatation. • JVP: Is raised, and may show systolic wave of TR. (large V wave). • MR/TR: Both MR and TR murmurs of I – III/IV degr ...
S0735109716007087_mmc1
... transient occlusion of the inferior vena cava was achieved by inflation of an Amplatzer sizing balloon (St. Jude Medical, Saint Paul, Minnesota). On average, 12 PV loops were acquired during balloon inflation and deflation. The end-systolic elastance (Ees) was determined as the linear slope through ...
... transient occlusion of the inferior vena cava was achieved by inflation of an Amplatzer sizing balloon (St. Jude Medical, Saint Paul, Minnesota). On average, 12 PV loops were acquired during balloon inflation and deflation. The end-systolic elastance (Ees) was determined as the linear slope through ...
Left ventricular outflow tract obstruction and Takotsubo syndrome
... nausea and diaphoresis. She had spent over 5 h gardening, which was usual for her. She was given aspirin and nitroglycerin, but the chest pain persisted (intensity 2/10). Twelve-lead ECG showed sinus rhythm with ST elevation in leads II, V and VI, and troponin was elevated (2.82 ng/ml). She was take ...
... nausea and diaphoresis. She had spent over 5 h gardening, which was usual for her. She was given aspirin and nitroglycerin, but the chest pain persisted (intensity 2/10). Twelve-lead ECG showed sinus rhythm with ST elevation in leads II, V and VI, and troponin was elevated (2.82 ng/ml). She was take ...
Malignant Arrhythmia as the First Manifestation of Wolff
... they analysed ECGs of 238 WPW cases and reported that 15% of patients had minimal delta waves and 10% of patients had PR interval longer than 120 ms on surface ECG (3). Unfortunately, the rate of arrhythmia in the minimal preexcitation group has not been reported. In case of clinical suspicion of WP ...
... they analysed ECGs of 238 WPW cases and reported that 15% of patients had minimal delta waves and 10% of patients had PR interval longer than 120 ms on surface ECG (3). Unfortunately, the rate of arrhythmia in the minimal preexcitation group has not been reported. In case of clinical suspicion of WP ...
Pathology N.47 Diseases of the heart part 1
... Disruption of the atheromatous plaque is decisive to the pathogenesis of the acute coronary syndromes. In acute transmural MI, the usual event is an occlusive thrombus superimposed on a disrupted but partially stenotic plaque. In contrast, with unstable angina, acute subendocardial infarction, or su ...
... Disruption of the atheromatous plaque is decisive to the pathogenesis of the acute coronary syndromes. In acute transmural MI, the usual event is an occlusive thrombus superimposed on a disrupted but partially stenotic plaque. In contrast, with unstable angina, acute subendocardial infarction, or su ...
Is prevention of sudden cardiac death feasible?
... including trained athletes. While the implantable cardioverter-defibrillator (ICD) was introduced over 25 years ago, it was not systematically applied to HCM until year 2000. The prevention of sudden death has long been an aspiration in HCM. Early experiences with pharmacologic strategies demonstrat ...
... including trained athletes. While the implantable cardioverter-defibrillator (ICD) was introduced over 25 years ago, it was not systematically applied to HCM until year 2000. The prevention of sudden death has long been an aspiration in HCM. Early experiences with pharmacologic strategies demonstrat ...
Right Parasternal Transverse Views
... within the thorax. Imagine a line along the length of the heart. • Very deep-chested dogs, for instance, may have a heart that is oriented straight up and down in the thorax from spine to sternum. • Most dogs typically have hearts that are oriented from shoulder to xyphoid (see Figure 1-3). • The lo ...
... within the thorax. Imagine a line along the length of the heart. • Very deep-chested dogs, for instance, may have a heart that is oriented straight up and down in the thorax from spine to sternum. • Most dogs typically have hearts that are oriented from shoulder to xyphoid (see Figure 1-3). • The lo ...
cardiology mcq questions
... series from the United States mentioned above, SCD due to these lesions accounted for 13 percent of cases in competitive athletes, which was second in frequency to HCM . Pathophysiology — High-risk coronary anomalies are those in which the anomalous coronary artery makes an acute bend and courses be ...
... series from the United States mentioned above, SCD due to these lesions accounted for 13 percent of cases in competitive athletes, which was second in frequency to HCM . Pathophysiology — High-risk coronary anomalies are those in which the anomalous coronary artery makes an acute bend and courses be ...
Imaging Pediatric Cardiomyopathies and Myocarditis
... – Systolic and diastolic dysfunction • Familial occurrence in 44% – 50% of infantile cases, 18% of adult cases • 3 Gene loci for X-linked and AD transmission • Neuromuscular disorders in 82% of adults • Facial dysmorphism in 38% of children • Higher incidence of WPW in Japanese children Ichida et al ...
... – Systolic and diastolic dysfunction • Familial occurrence in 44% – 50% of infantile cases, 18% of adult cases • 3 Gene loci for X-linked and AD transmission • Neuromuscular disorders in 82% of adults • Facial dysmorphism in 38% of children • Higher incidence of WPW in Japanese children Ichida et al ...
Dysrhythmias of the AV Node and Ventricles notes
... o Consists of delivering a shock to a dysrhythmia, where no QRS or T wave is present. Synch switch is off if using a manual defibrillator instead of an AED. ACLS training is required. Many machines on crash carts have both an AED and manual mode. o Dysrhythmias: VT no pulse, VF Cardioversion Ele ...
... o Consists of delivering a shock to a dysrhythmia, where no QRS or T wave is present. Synch switch is off if using a manual defibrillator instead of an AED. ACLS training is required. Many machines on crash carts have both an AED and manual mode. o Dysrhythmias: VT no pulse, VF Cardioversion Ele ...
ONE-HALF CYCLE - Circulation Research
... dose, was required during the procedure. The operating tables on which animals lay were equipped with rubber tips on the legs and insulating mats between the animal and the table. These precautions guaranteed that the current flowed between the two electrodes held on the chest and not through altern ...
... dose, was required during the procedure. The operating tables on which animals lay were equipped with rubber tips on the legs and insulating mats between the animal and the table. These precautions guaranteed that the current flowed between the two electrodes held on the chest and not through altern ...
Improved Cardiac Output with Right Ventricular Septal Pacing in a
... selected for the endocardial lead which was placed in the right ventricular septum. After the procedure, an echocardiography Doppler study was performed to explore a possible differential effect of native versus right ventricular pacing. During both native and paced rhythm, the left ventricular outf ...
... selected for the endocardial lead which was placed in the right ventricular septum. After the procedure, an echocardiography Doppler study was performed to explore a possible differential effect of native versus right ventricular pacing. During both native and paced rhythm, the left ventricular outf ...
Cardiac Electrical Therapies
... fibrillation (VF) • Contraindications – awake, responsive patients – any arrhythmias in a patient with a pulse ...
... fibrillation (VF) • Contraindications – awake, responsive patients – any arrhythmias in a patient with a pulse ...
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.