second degree heart block with mitral insufficiency in a dog
... as arrhythmia (Rush, 2002). In advanced stages, the affected animals may exhibit arteriosclerosis and multiple intramural myocardial infarcts. Kienle and Thomas (2002) stated that echocardiographic changes in chronic degenerative valvular disease included left atrial and left ventricular dilatation, ...
... as arrhythmia (Rush, 2002). In advanced stages, the affected animals may exhibit arteriosclerosis and multiple intramural myocardial infarcts. Kienle and Thomas (2002) stated that echocardiographic changes in chronic degenerative valvular disease included left atrial and left ventricular dilatation, ...
Physics of the Heart: Dynamics & Control of Ventricular
... An ICD consists of a pulse generator and electrical leads. Endocardial leads are inserted through a vein and advanced to the right ventricle and/or atrium. The pulse generator is placed subcutaneously or submuscularly and connected to the leads. The ICD constantly monitors heart rhythm. Upon detecti ...
... An ICD consists of a pulse generator and electrical leads. Endocardial leads are inserted through a vein and advanced to the right ventricle and/or atrium. The pulse generator is placed subcutaneously or submuscularly and connected to the leads. The ICD constantly monitors heart rhythm. Upon detecti ...
Establishing norms for echocardiographic measurements of
... end points have been reached to reliably quantify the relationship. HIV-infected children are one such example where sufficient data do exist (8). In that population, left ventricular fractional shortening, contractility, posterior wall thickness, and body surface area-normed mass are some of the st ...
... end points have been reached to reliably quantify the relationship. HIV-infected children are one such example where sufficient data do exist (8). In that population, left ventricular fractional shortening, contractility, posterior wall thickness, and body surface area-normed mass are some of the st ...
Favourable outcome in idiopathic ventricular fibrillation - Heart
... During a median follow up of 2-8 years there monomorphic ventricular tachycardias.5 9 25 were no defibrillator discharges and only Obviously, monomorphic tachycardias may patient No 1 had a recurrence of a well toler- be more amenable to serial drug treatment ated monomorphic ventricular tachycardia ...
... During a median follow up of 2-8 years there monomorphic ventricular tachycardias.5 9 25 were no defibrillator discharges and only Obviously, monomorphic tachycardias may patient No 1 had a recurrence of a well toler- be more amenable to serial drug treatment ated monomorphic ventricular tachycardia ...
Powerpoint - Circulation: Arrhythmia and Electrophysiology
... the PVCs originating from the LV PPM. The first beat is a sinus beat and the second a PVC. Note that at the successful ablation site, no Purkinje potentials were observed during sinus rhythm, and a spiky prepotential (arrowhead) was observed in the local ventricular activity during the PVC. ABL indi ...
... the PVCs originating from the LV PPM. The first beat is a sinus beat and the second a PVC. Note that at the successful ablation site, no Purkinje potentials were observed during sinus rhythm, and a spiky prepotential (arrowhead) was observed in the local ventricular activity during the PVC. ABL indi ...
11.2 Regulation of the Heart
... • atrial fibrillation (Afib) – atria contract faster than 350 bpm – atria are not coordinated, they “quiver” – If severe, may need a pacemaker ...
... • atrial fibrillation (Afib) – atria contract faster than 350 bpm – atria are not coordinated, they “quiver” – If severe, may need a pacemaker ...
New onset atrial fibrillation after initiating amphetamine
... only a small risk of significant cardiovascular events of less than 5%.[6] ...
... only a small risk of significant cardiovascular events of less than 5%.[6] ...
ATRIAL PREMATURE BEATS
... common. Together, they are the commonest causes of a grossly irregular rhythm with anormal heart rate. Ectopic impulse formation causes ventricular contraction to occur sooner than then extexpected beat. The sound of this contraction is audible. The pause between the ectopic ventricular beat and the ...
... common. Together, they are the commonest causes of a grossly irregular rhythm with anormal heart rate. Ectopic impulse formation causes ventricular contraction to occur sooner than then extexpected beat. The sound of this contraction is audible. The pause between the ectopic ventricular beat and the ...
Pharmacology
... Class I drugs bind more rapidly to open or inactivated sodium channels than to channels that are fully repolarized following recovery from the previous depolarization cycle. The central concept is of use-dependent channel block. It is this characteristic that enables all class I drugs to block the h ...
... Class I drugs bind more rapidly to open or inactivated sodium channels than to channels that are fully repolarized following recovery from the previous depolarization cycle. The central concept is of use-dependent channel block. It is this characteristic that enables all class I drugs to block the h ...
Chessboard of atrial fibrillation: reentry or focus? Single or multiple
... accepted. Space is lacking to review the different hypotheses, but we may note in passing that they all center around two ideas, viz., (a) that the impulses arise from centers, or pacemakers, or (b) that the condition is caused by the re-entry of impulses and the formation of circles of excitation. ...
... accepted. Space is lacking to review the different hypotheses, but we may note in passing that they all center around two ideas, viz., (a) that the impulses arise from centers, or pacemakers, or (b) that the condition is caused by the re-entry of impulses and the formation of circles of excitation. ...
Case
... supraventricular and ventricular tachyarrhythmias. Despite that, amiodarone has numerous adverse effects. Amiodarone may prolong QT interval, although polymorphic ventricular tachycardia (torsades de pointes) is rare. Prolongation of QT interval increases the risk for torsade the pointes. In this ca ...
... supraventricular and ventricular tachyarrhythmias. Despite that, amiodarone has numerous adverse effects. Amiodarone may prolong QT interval, although polymorphic ventricular tachycardia (torsades de pointes) is rare. Prolongation of QT interval increases the risk for torsade the pointes. In this ca ...
B1 Atrial Fibrillation
... - supraventricular tachyarrhythmia characterized by uncoordinated atrial activation with consequent deterioration of atrial mechanical function. - caused by 1) abnormal impulse formation or 2) abnormal impulse conduction - characterized by extremely rapid (300-600 bmp) and disorganized atrial activa ...
... - supraventricular tachyarrhythmia characterized by uncoordinated atrial activation with consequent deterioration of atrial mechanical function. - caused by 1) abnormal impulse formation or 2) abnormal impulse conduction - characterized by extremely rapid (300-600 bmp) and disorganized atrial activa ...
Papillary fibroelastoma of the mitral valve: a rare cause of
... sustained ventricular tachycardia in patients with coronary artery disease. Circulation 1993;87:1220-8. 28 Vybiral T, Glaeser DH, Goldberger AL, et al. Conventional heart rate variability analysis of ambulatory electrocardiographic recordings fails to predict imminent ventricular fibrillation. J Am ...
... sustained ventricular tachycardia in patients with coronary artery disease. Circulation 1993;87:1220-8. 28 Vybiral T, Glaeser DH, Goldberger AL, et al. Conventional heart rate variability analysis of ambulatory electrocardiographic recordings fails to predict imminent ventricular fibrillation. J Am ...
ECG signs of AV Blocks and Bundle Branch Blocks
... • Ventricular fibrillation (VF) is the the most important shockable cardiac arrest rhythm. • The ventricles suddenly attempt to contract at rates of up to 500 bpm. • This rapid and irregular electrical activity renders the ventricles unable to contract in a synchronised manner, resulting in immediat ...
... • Ventricular fibrillation (VF) is the the most important shockable cardiac arrest rhythm. • The ventricles suddenly attempt to contract at rates of up to 500 bpm. • This rapid and irregular electrical activity renders the ventricles unable to contract in a synchronised manner, resulting in immediat ...
Cardiac Output
... • Fick Principle relies on the total uptake of a substances by peripheral tissue is equal to the product of blood flow to the peripheral tissue and arterial – venous concentration difference of the substances • Fick cardiac outputs are infrequently used because difficulties in collecting and analyzi ...
... • Fick Principle relies on the total uptake of a substances by peripheral tissue is equal to the product of blood flow to the peripheral tissue and arterial – venous concentration difference of the substances • Fick cardiac outputs are infrequently used because difficulties in collecting and analyzi ...
Atrial Arrhythmias with Low Amplitude P waves
... digoxin, 0.25 mg, alternating with 0.125 mg daily. ...
... digoxin, 0.25 mg, alternating with 0.125 mg daily. ...
ATRIAL FIBRILLATION CARDIOVERSION FOLLOWING
... His blood pressure was 130/80 mmHg , pulse above 125/min, pulse oximeter showed 98% oxygenation. His BMI was 29.2 kg/m2, body temperature 36.7°C. ECG showed atrial fibrillation with an average ventricular response of 107 bpm. He had a left electrical axis and left anterior fascicular block. There we ...
... His blood pressure was 130/80 mmHg , pulse above 125/min, pulse oximeter showed 98% oxygenation. His BMI was 29.2 kg/m2, body temperature 36.7°C. ECG showed atrial fibrillation with an average ventricular response of 107 bpm. He had a left electrical axis and left anterior fascicular block. There we ...
here
... disorders, including Brugada syndrome, catecholaminergic polymorphic ventricular tachycardia (CPVT), familial atrial fibrillation, familial AV block, long QT syndrome, short QT syndrome, as well as a comprehensive cardiac channelopathy panel, which is best suited for patients without a clear diagnos ...
... disorders, including Brugada syndrome, catecholaminergic polymorphic ventricular tachycardia (CPVT), familial atrial fibrillation, familial AV block, long QT syndrome, short QT syndrome, as well as a comprehensive cardiac channelopathy panel, which is best suited for patients without a clear diagnos ...
Inherited Arrhythmia Panels
... disorders, including Brugada syndrome, catecholaminergic polymorphic ventricular tachycardia (CPVT), familial atrial fibrillation, familial AV block, long QT syndrome, short QT syndrome, as well as a comprehensive cardiac channelopathy panel, which is best suited for patients without a clear diagnos ...
... disorders, including Brugada syndrome, catecholaminergic polymorphic ventricular tachycardia (CPVT), familial atrial fibrillation, familial AV block, long QT syndrome, short QT syndrome, as well as a comprehensive cardiac channelopathy panel, which is best suited for patients without a clear diagnos ...
Cardiac Arrhythmias
... premature atrial contractions (PAC) • A condition in which an atrial pacemaker site above the ventricles sends out an electrical signal early. The ventricles are usually able to respond to this signal, but the result is an irregular heart rhythm. • PACs are common and may occur as the result of stim ...
... premature atrial contractions (PAC) • A condition in which an atrial pacemaker site above the ventricles sends out an electrical signal early. The ventricles are usually able to respond to this signal, but the result is an irregular heart rhythm. • PACs are common and may occur as the result of stim ...
Cardiac Arrhythmias sree
... premature atrial contractions (PAC) • A condition in which an atrial pacemaker site above the ventricles sends out an electrical signal early. The ventricles are usually able to respond to this signal, but the result is an irregular heart rhythm. • PACs are common and may occur as the result of stim ...
... premature atrial contractions (PAC) • A condition in which an atrial pacemaker site above the ventricles sends out an electrical signal early. The ventricles are usually able to respond to this signal, but the result is an irregular heart rhythm. • PACs are common and may occur as the result of stim ...
Cardiac Arrhythmias
... premature atrial contractions (PAC) • A condition in which an atrial pacemaker site above the ventricles sends out an electrical signal early. The ventricles are usually able to respond to this signal, but the result is an irregular heart rhythm. • PACs are common and may occur as the result of stim ...
... premature atrial contractions (PAC) • A condition in which an atrial pacemaker site above the ventricles sends out an electrical signal early. The ventricles are usually able to respond to this signal, but the result is an irregular heart rhythm. • PACs are common and may occur as the result of stim ...
Print - Circulation Research
... a 10 per cent CaCUt solution was used in all animals. During the injection and the following two minutes, the cardiac mechanism was continuously studied through a cardioscope connected to the animal with two percutaneous clamp electrodes. An electrocardiograph recorded occasional tracings when so de ...
... a 10 per cent CaCUt solution was used in all animals. During the injection and the following two minutes, the cardiac mechanism was continuously studied through a cardioscope connected to the animal with two percutaneous clamp electrodes. An electrocardiograph recorded occasional tracings when so de ...
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.