Basic ECG Interpretation Christopher Wenger, DO August 2012
... ~progressive shortening of PP interval up to pause ~constant PR interval ~PP pause <2x the normal PP interval -Progressive lengthening of the interval between impulse generation and transmission, culminating in failure ~the gradually lengthening transmission interval pushes successive P waves closer ...
... ~progressive shortening of PP interval up to pause ~constant PR interval ~PP pause <2x the normal PP interval -Progressive lengthening of the interval between impulse generation and transmission, culminating in failure ~the gradually lengthening transmission interval pushes successive P waves closer ...
Treatment of Ventricular Arrhythmias in Patients Undergoing LVAD
... Mulloy DP, M.D., Mahapatra S, M.D. FHRS and Kern JA, M.D. FACS University of Virginia U.S.A. "When the heart is diseased, its work is imperfectly performed: the vessels proceeding from the heart become inactive, so that you cannot feel them … if the heart trembles, has little power and sinks, the di ...
... Mulloy DP, M.D., Mahapatra S, M.D. FHRS and Kern JA, M.D. FACS University of Virginia U.S.A. "When the heart is diseased, its work is imperfectly performed: the vessels proceeding from the heart become inactive, so that you cannot feel them … if the heart trembles, has little power and sinks, the di ...
CPC: Plumbism or Promiscuity?
... Without warning, he went down in a heap, not 10 feet from his guests. Gopal sprang into action. Finding no pulse, he began manual chest compressions. Mike effortlessly joined in to provide ventilation. Geeta used their cellular phone to immediately alert fire rescue, who arrived minutes later. Para ...
... Without warning, he went down in a heap, not 10 feet from his guests. Gopal sprang into action. Finding no pulse, he began manual chest compressions. Mike effortlessly joined in to provide ventilation. Geeta used their cellular phone to immediately alert fire rescue, who arrived minutes later. Para ...
Anticoagulation for Emergency Department Patients With Atrial
... and has difficulty accessing the health care system? Should that encourage the emergency physician to initiate warfarin or one of the alternative approved anticoagulants? There are now 5 primary options for thromboembolism prevention. Do emergency physicians need to be experts in selecting the best ...
... and has difficulty accessing the health care system? Should that encourage the emergency physician to initiate warfarin or one of the alternative approved anticoagulants? There are now 5 primary options for thromboembolism prevention. Do emergency physicians need to be experts in selecting the best ...
Role of atrioventricular nodal ablation and pacemaker therapy in
... Radiofrequency ablation of the AV node combined with permanent right ventricular (RV) endocardial pacing is a highly effective treatment for controlling the ventricular response of AF. AV nodal ablation is achieved by inserting a steerable ablation catheter via the right or left femoral vein. The ti ...
... Radiofrequency ablation of the AV node combined with permanent right ventricular (RV) endocardial pacing is a highly effective treatment for controlling the ventricular response of AF. AV nodal ablation is achieved by inserting a steerable ablation catheter via the right or left femoral vein. The ti ...
Hypokalemia
... Signs of ileus Hypotension Ventricular arrhythmias Cardiac arrest Bradycardia or tachycardia • Premature atrial or ventricular beats ...
... Signs of ileus Hypotension Ventricular arrhythmias Cardiac arrest Bradycardia or tachycardia • Premature atrial or ventricular beats ...
Circa- and ultradians in the occurrence of simple extrasystoles in
... Extrasystoles in healthy male persons at lowland ...
... Extrasystoles in healthy male persons at lowland ...
Intermediate-Signal-Intensity Late Gadolinium
... without these arrhythmias. In HCM patients with either nonsustained ventricular tachycardia, couplets, or premature ventricular contractions, the extent of intermediate LGE-SI exceeded that of high LGE-SI (17⫾7 versus 15⫾6 g, 16⫾10 versus 14⫾9 g, and 13⫾8 versus 12⫾7 g, respectively; P⫽0.01– 0.04). ...
... without these arrhythmias. In HCM patients with either nonsustained ventricular tachycardia, couplets, or premature ventricular contractions, the extent of intermediate LGE-SI exceeded that of high LGE-SI (17⫾7 versus 15⫾6 g, 16⫾10 versus 14⫾9 g, and 13⫾8 versus 12⫾7 g, respectively; P⫽0.01– 0.04). ...
A study in intracardiac conduction fusion with ventricular escape beats
... escape beats follow incomplete left bundle- can only be discharged by the sinus impulse branch block at an interval of I 36 sec, and at which is conducted down the right bundlean interval of I 46 sec after complete left branch and which can only reach the idiobundle-branch block. From the reasoning ...
... escape beats follow incomplete left bundle- can only be discharged by the sinus impulse branch block at an interval of I 36 sec, and at which is conducted down the right bundlean interval of I 46 sec after complete left branch and which can only reach the idiobundle-branch block. From the reasoning ...
Quantitative volumetric analysis of cardiac morphogenesis assessed
... (HH) 15 through HH36, which solidified to create a cast within the luminal space. Hearts were then scanned at 10.5 m3 voxel resolution using a VivaCT scanner, digital slices were contoured for regions of interest, and computational analysis was conducted to quantify morphogenetic parameters. The thr ...
... (HH) 15 through HH36, which solidified to create a cast within the luminal space. Hearts were then scanned at 10.5 m3 voxel resolution using a VivaCT scanner, digital slices were contoured for regions of interest, and computational analysis was conducted to quantify morphogenetic parameters. The thr ...
Inherited cardiac arrhythmia syndromes: What have they taught us
... in the SCN5A gene, which encodes the α-subunit of the cardiac Na+ channel.13 The Na+ channel is primarily responsible for the rapid depolarisation of the cardiac action potential. Interestingly, mutations in SCN5A that cause LQTS are “gain of function” mutations that result in the channels not switc ...
... in the SCN5A gene, which encodes the α-subunit of the cardiac Na+ channel.13 The Na+ channel is primarily responsible for the rapid depolarisation of the cardiac action potential. Interestingly, mutations in SCN5A that cause LQTS are “gain of function” mutations that result in the channels not switc ...
Cardiac arrhythmias
... enlarged and, after long periods of chronic atrial fibrillation, loses contractile ability when sinus rhythm is reestablished. Cardiac function usually decreases when atrial fibrillation replaces sinus rhythm. Many patients develop polyuria during episodes of paroxysmal atrial fibrillation. Electrophys ...
... enlarged and, after long periods of chronic atrial fibrillation, loses contractile ability when sinus rhythm is reestablished. Cardiac function usually decreases when atrial fibrillation replaces sinus rhythm. Many patients develop polyuria during episodes of paroxysmal atrial fibrillation. Electrophys ...
Diagnosis and treatment of catecholaminergic polymorphic
... from an unexplained cardiac arrest (normal coronary arteries, normal ventricular function, and normal ECG) can be diagnosed as having catecholaminergic polymorphic VT. Overall, these data seem to support the idea that catecholaminergic polymorphic VT is a relevant cause of adrenergic-triggered (exer ...
... from an unexplained cardiac arrest (normal coronary arteries, normal ventricular function, and normal ECG) can be diagnosed as having catecholaminergic polymorphic VT. Overall, these data seem to support the idea that catecholaminergic polymorphic VT is a relevant cause of adrenergic-triggered (exer ...
Myocardial High Energy Phosphate Stores in Cardiac Hypertrophy
... this technique (15) and improved analytic methods (16-18) have made possible the accurate determination of these stores. The development of a technique which allows detailed evaluation of the contractile function of the myocardium obtained from the hearts of animals with ventricular hypertrophy and ...
... this technique (15) and improved analytic methods (16-18) have made possible the accurate determination of these stores. The development of a technique which allows detailed evaluation of the contractile function of the myocardium obtained from the hearts of animals with ventricular hypertrophy and ...
Events in the cardiac arrhythmia suppression trial (CAST): Mortality
... doses of three drugs (encainide, flecainide or moricizine) in unblinded, open label titration. The criteria for suppression were ~80% reduction in the frequency of ventricular premature depolarizations and ~90% reduction in runs of unsustained ventricular tachycardia, as measured by 24 h ambulatory ...
... doses of three drugs (encainide, flecainide or moricizine) in unblinded, open label titration. The criteria for suppression were ~80% reduction in the frequency of ventricular premature depolarizations and ~90% reduction in runs of unsustained ventricular tachycardia, as measured by 24 h ambulatory ...
Print - Circulation
... SUMMARY The causes of sudden and unexpected death in 29 highly conditioned, competitive athletes, ages 13-30 years, are summarized. Sudden death occurred during or just after severe exertion on the athletic field in 22 of the 29 athletes. Structural cardiovascular abnormalities were identified at ne ...
... SUMMARY The causes of sudden and unexpected death in 29 highly conditioned, competitive athletes, ages 13-30 years, are summarized. Sudden death occurred during or just after severe exertion on the athletic field in 22 of the 29 athletes. Structural cardiovascular abnormalities were identified at ne ...
The incidence of atrial arrhythmias during inferior wall myocardial
... MI was comparable with the normal control values. The prevalence of RV dysfunction was also in close agreement with that in previous reports.15-I9 This study provides no information about the naturally occurring trigger responsible for the higher propensity toward atria1 rhythm disturbances among pa ...
... MI was comparable with the normal control values. The prevalence of RV dysfunction was also in close agreement with that in previous reports.15-I9 This study provides no information about the naturally occurring trigger responsible for the higher propensity toward atria1 rhythm disturbances among pa ...
Status of Antiarrhythmic Drug Development for Atrial Fibrillation
... shown superior efficacy for vernakalant. Vernakalant has also been shown to have similar efficacy to direct current cardioversion in an observational comparison study.17 As predicted from the basic science discussed above, vernakalant use did not result in an increased incidence of ventricular arrhy ...
... shown superior efficacy for vernakalant. Vernakalant has also been shown to have similar efficacy to direct current cardioversion in an observational comparison study.17 As predicted from the basic science discussed above, vernakalant use did not result in an increased incidence of ventricular arrhy ...
Early detection of anthracycline cardiotoxicity in a rabbit model: left
... Anthracycline antibiotics (e.g. doxorubicin, daunorubicin, epirubicin) are among the most effective chemotherapeutic agents in the treatment of both haematological and solid malignancies (Yee 2005 et al., Chabner 2006 et al.). Cardiotoxicity, however, represents a serious adverse reaction that large ...
... Anthracycline antibiotics (e.g. doxorubicin, daunorubicin, epirubicin) are among the most effective chemotherapeutic agents in the treatment of both haematological and solid malignancies (Yee 2005 et al., Chabner 2006 et al.). Cardiotoxicity, however, represents a serious adverse reaction that large ...
Analysis of left ventricular diastolic function using magnetic
... appropriate levels, and if achieved, it is at the expense of a chronic elevation of the ventricular filling pressure’’.2 This definition not only takes into account anomalies of the pump mechanism or expulsion of blood, but also of the ventricular filling. The left ventricular filling capacity, cons ...
... appropriate levels, and if achieved, it is at the expense of a chronic elevation of the ventricular filling pressure’’.2 This definition not only takes into account anomalies of the pump mechanism or expulsion of blood, but also of the ventricular filling. The left ventricular filling capacity, cons ...
![Full Text [Download PDF]](http://s1.studyres.com/store/data/001451512_1-b90654b64d2d6f55b6dacfe759df7376-300x300.png)
Full Text [Download PDF]
... (10/890), including 5 cases of third-degree atrioventricular block (all of them occurred during the 3 to 5 days after the procedure), 2 of severe tricuspid valve regurgitation, 1 of cerebral infarction in the basal ganglia area, and 2 of femoral artery thrombosis. No death was reported during the fo ...
... (10/890), including 5 cases of third-degree atrioventricular block (all of them occurred during the 3 to 5 days after the procedure), 2 of severe tricuspid valve regurgitation, 1 of cerebral infarction in the basal ganglia area, and 2 of femoral artery thrombosis. No death was reported during the fo ...
Influence of aortic valve disease on systolic stiffness of
... wall thickness was measured at the mid third of the anterior wall in the right anterior oblique view for the end-diastolic frame. Correction factors for ventricular measurements were derived from the grids positioned at the center of the ventricle. Left ventricular volume was computed by the area-le ...
... wall thickness was measured at the mid third of the anterior wall in the right anterior oblique view for the end-diastolic frame. Correction factors for ventricular measurements were derived from the grids positioned at the center of the ventricle. Left ventricular volume was computed by the area-le ...
Prevalence of myocardial infarction in congestive heart failure
... Minor criteria include bilateral ankle edema, nocturnal cough, dyspnea on ordinary exertion, hepatomegaly, pleural effusion, decrease in vital capacity by 33% from maximal value record and tachycardia (rate ≥120 beats/min). The diagnosis of heart failure must have at least two major criteria or one ...
... Minor criteria include bilateral ankle edema, nocturnal cough, dyspnea on ordinary exertion, hepatomegaly, pleural effusion, decrease in vital capacity by 33% from maximal value record and tachycardia (rate ≥120 beats/min). The diagnosis of heart failure must have at least two major criteria or one ...
Distribution of Heart Potentials on the Thoracic Surface of Normal
... illustrated in figures 2b to 5a, this "dipolar" stage had a duration of 15 msec (figs. 4c and 5b). In some cases, however, two simultaneous minima of potential are still present after the peak of the R wave in lead 2 (fig. 5b, case 3). During the last stages of ventricular activation a series of new ...
... illustrated in figures 2b to 5a, this "dipolar" stage had a duration of 15 msec (figs. 4c and 5b). In some cases, however, two simultaneous minima of potential are still present after the peak of the R wave in lead 2 (fig. 5b, case 3). During the last stages of ventricular activation a series of new ...
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.