Chapter 29
... One of the most common causes of cardiac arrest is ventricular fibrillation, a chaotic, unorganized electrical malfunction of the heart that results in no useful heartbeat. This chaotic electrical activity can be stopped only by applying an electrical countershock. Once the ventricular fibrillation ...
... One of the most common causes of cardiac arrest is ventricular fibrillation, a chaotic, unorganized electrical malfunction of the heart that results in no useful heartbeat. This chaotic electrical activity can be stopped only by applying an electrical countershock. Once the ventricular fibrillation ...
Rosenberg (BIDMC) PACE Article 2012
... AF. In many cases, clinical decisions such as antiarrhythmic medication dosage adjustment, the need for cardioversion, and potentially the need for anticoagulation, are based on the ability of clinicians to detect and document the presence of recurrence and burden of AF. In addition, outpatient moni ...
... AF. In many cases, clinical decisions such as antiarrhythmic medication dosage adjustment, the need for cardioversion, and potentially the need for anticoagulation, are based on the ability of clinicians to detect and document the presence of recurrence and burden of AF. In addition, outpatient moni ...
Spatial QRS-T angle predicts cardiac death in a
... angle in predicting cardiovascular mortality in a large, general hospital-based population. Our findings support the value of repolarization measures13–15 as determined by the spatial QRS-T angle as a tool for risk stratification. Although considered a marker of pathology from the early days of ECG, ...
... angle in predicting cardiovascular mortality in a large, general hospital-based population. Our findings support the value of repolarization measures13–15 as determined by the spatial QRS-T angle as a tool for risk stratification. Although considered a marker of pathology from the early days of ECG, ...
transfer of the heart pacemaker during juvenile development in the
... morphological features of the heart of newly hatched juveniles. At this stage of development, the heart tube was approximately 1 mm in length and 0.1 mm wide and was suspended in the pericardial cavity as in the adult (Fig. 2A). In electron micrographs, the heart wall could be seen clearly to consis ...
... morphological features of the heart of newly hatched juveniles. At this stage of development, the heart tube was approximately 1 mm in length and 0.1 mm wide and was suspended in the pericardial cavity as in the adult (Fig. 2A). In electron micrographs, the heart wall could be seen clearly to consis ...
Haemodynamic Alterations Induced By Cardiac Pacing: Is Clinical
... be superior for haemodynamic outcome.27 The development of multipolar pacing leads for placement in the coronary venous system can be regarded as one of the most important advancements of the last years. These leads have been evaluated in various clinical studies. An improved haemodynamic response a ...
... be superior for haemodynamic outcome.27 The development of multipolar pacing leads for placement in the coronary venous system can be regarded as one of the most important advancements of the last years. These leads have been evaluated in various clinical studies. An improved haemodynamic response a ...
Neural Control Hierarchy Of The Heart Has Not Evolved To Deal
... of heart function, specifically the view that this control resides largely in central com- ...
... of heart function, specifically the view that this control resides largely in central com- ...
A practical approach to torsade de pointes
... lability in QT interval, not only in space (“dispersion ofrepolarization”) but also in time; that is, QT intervals can be only modestly prolonged at one instant and seconds later become markedly prolonged. QT alternans is an extreme example of this lability and is most frequently seen in patients wi ...
... lability in QT interval, not only in space (“dispersion ofrepolarization”) but also in time; that is, QT intervals can be only modestly prolonged at one instant and seconds later become markedly prolonged. QT alternans is an extreme example of this lability and is most frequently seen in patients wi ...
Discerning the Incidence of Symptomatic and Asymptomatic
... adjudicated episodes of arrhythmia were considered asymptomatic. The numbers of symptomatic vs asymptomatic days for each patient were calculated using previously published criteria10; any day with AF/AFL/AT lasting 5 minutes or longer detected by the ICM and with diary symptoms lasting 5 minutes o ...
... adjudicated episodes of arrhythmia were considered asymptomatic. The numbers of symptomatic vs asymptomatic days for each patient were calculated using previously published criteria10; any day with AF/AFL/AT lasting 5 minutes or longer detected by the ICM and with diary symptoms lasting 5 minutes o ...
Molecular Mechanisms of Myocardial Hypertrophy and Heart
... Heart failure (HF) is the common endpoint of heart disease of various etiologies, and is a major cause of hospitalizations and death worldwide(1-3). Essentially, HF represents a pathophysiologic state of impaired cardiac function in which the heart is unable to maintain cardiac output sufficient for ...
... Heart failure (HF) is the common endpoint of heart disease of various etiologies, and is a major cause of hospitalizations and death worldwide(1-3). Essentially, HF represents a pathophysiologic state of impaired cardiac function in which the heart is unable to maintain cardiac output sufficient for ...
Full Text-PDF - American Journal of Research Communication
... from the cell cycle. There are certain conditions, for instance, cardiac hypertrophy where adult heart muscle cells undergo DNA synthesis and nuclear mitosis without undergoing cytokinesis which renders majority of adult cardiac myocytes binucleated. In this situation, there is an increase in the ma ...
... from the cell cycle. There are certain conditions, for instance, cardiac hypertrophy where adult heart muscle cells undergo DNA synthesis and nuclear mitosis without undergoing cytokinesis which renders majority of adult cardiac myocytes binucleated. In this situation, there is an increase in the ma ...
PACES/HRS Expert Consensus Statement on the Evaluation and
... variability of sinus rhythm precludes purely numerical classification; however, it is the relationship to the expected sinus rate that is used. Ventricular escape rhythms are defined as slower than sinus rhythm; idioventricular rhythms are similar to sinus rhythm; and accelerated idioventricular rhyth ...
... variability of sinus rhythm precludes purely numerical classification; however, it is the relationship to the expected sinus rate that is used. Ventricular escape rhythms are defined as slower than sinus rhythm; idioventricular rhythms are similar to sinus rhythm; and accelerated idioventricular rhyth ...
Prevention of sudden cardiac death in
... is that patients treated with an ICD receive appropriate shocks to terminate potentially life threatening ventricular arrhythmias19 and at the same time do not die suddenly (with the exception of rare cases due to device malfunction, non-VF causes of SCD or ineffective defibrillationw7 w39 w40). Thes ...
... is that patients treated with an ICD receive appropriate shocks to terminate potentially life threatening ventricular arrhythmias19 and at the same time do not die suddenly (with the exception of rare cases due to device malfunction, non-VF causes of SCD or ineffective defibrillationw7 w39 w40). Thes ...
Example of ICS Formatting
... metaphorically weighed as to what reward a person may get at the end of things. Classical categories in anthropology do not consider the issue of emotions but rather focus on the personal contexts of life, the psyche which deals with the publicly observable behavior of the individual person. Pneuma ...
... metaphorically weighed as to what reward a person may get at the end of things. Classical categories in anthropology do not consider the issue of emotions but rather focus on the personal contexts of life, the psyche which deals with the publicly observable behavior of the individual person. Pneuma ...
Growth differentiation factor-15 (GDF
... which has become serious public health problem that seriously endanger the people’s health. The current view is that occurrence and maintenance of atrial fibrillation are closely related to atrial remodeling which includes electrical remodeling and structural remodeling, and atrial fibrosis is the m ...
... which has become serious public health problem that seriously endanger the people’s health. The current view is that occurrence and maintenance of atrial fibrillation are closely related to atrial remodeling which includes electrical remodeling and structural remodeling, and atrial fibrosis is the m ...
Chest Roentgenogram in the Evaluation of Heart Defects in
... level of agreement between the first and second evaluation of the individual radiologists. When only films from children with abnormal CDE were considered, the k values ranged from 0.49 to 0.78, indicating a slightly better agreement. In Table 3 the mean intraobserver (within observer) k values are ...
... level of agreement between the first and second evaluation of the individual radiologists. When only films from children with abnormal CDE were considered, the k values ranged from 0.49 to 0.78, indicating a slightly better agreement. In Table 3 the mean intraobserver (within observer) k values are ...
Pediatric Cardiomyopathies
... Cardiomyopathy is a chronic disease of the heart muscle (myocardium), in which the muscle is abnormally enlarged, thickened, and/or stiffened. The weakened heart muscle loses the ability to pump blood effectively, resulting in irregular heartbeats (arrhythmias) and possibly even heart failure. Cardi ...
... Cardiomyopathy is a chronic disease of the heart muscle (myocardium), in which the muscle is abnormally enlarged, thickened, and/or stiffened. The weakened heart muscle loses the ability to pump blood effectively, resulting in irregular heartbeats (arrhythmias) and possibly even heart failure. Cardi ...
Note
... b-less then 5 degree so you need to study the subject and continue in your studying … 4- after your studying to these subject content do the post test , if you got :a- five and more then pass to study the second lecture b-less than five degree then go back to study the first lecture or any part of i ...
... b-less then 5 degree so you need to study the subject and continue in your studying … 4- after your studying to these subject content do the post test , if you got :a- five and more then pass to study the second lecture b-less than five degree then go back to study the first lecture or any part of i ...
Implantable Cardioverter Defibrillator
... The automatic implantable cardioverter defibrillator (ICD) is a device designed to monitor a patient’s heart rate, recognize ventricular fibrillation or ventricular tachycardia, and deliver an electric shock to terminate these arrhythmias to reduce the risk of sudden death. A subcutaneous ICD (S-ICD ...
... The automatic implantable cardioverter defibrillator (ICD) is a device designed to monitor a patient’s heart rate, recognize ventricular fibrillation or ventricular tachycardia, and deliver an electric shock to terminate these arrhythmias to reduce the risk of sudden death. A subcutaneous ICD (S-ICD ...
The structure and function of cardiac t
... radiations, which paralleled findings in skeletal muscle. These studies described in ventricular cells a less regular but much larger t-tubule system. The finding that the external membrane penetrated the cell’s centre was used to explain the earlier finding that it took less than 40 ms for excitati ...
... radiations, which paralleled findings in skeletal muscle. These studies described in ventricular cells a less regular but much larger t-tubule system. The finding that the external membrane penetrated the cell’s centre was used to explain the earlier finding that it took less than 40 ms for excitati ...
Cardiovascular Physiology Of Fish
... Doppler echocardiography velocity spectral records of ejection ventricular flow presented a typical spectrum, characterised by two phases: rapid acceleration and slow deceleration. Peak flow velocity varied between 0.13 and 0.25 m/s, and the pressure gradient between the ventricle and the bulbus, ra ...
... Doppler echocardiography velocity spectral records of ejection ventricular flow presented a typical spectrum, characterised by two phases: rapid acceleration and slow deceleration. Peak flow velocity varied between 0.13 and 0.25 m/s, and the pressure gradient between the ventricle and the bulbus, ra ...
Syncope and The Older Patient
... pacemakers and antiarrthythmia devices: executive summary: a report of the American College of Cardiology/Am Heart Assoc Task Force on Practice Guidelines. Circulation. ...
... pacemakers and antiarrthythmia devices: executive summary: a report of the American College of Cardiology/Am Heart Assoc Task Force on Practice Guidelines. Circulation. ...
Clinical effects of cardiac contractility modulation (CCM) as a
... detection of the onset of theQRS complex and consist of two biphasic + 7.7 V pulses spanning a total duration of 20 ms. These signals do not elicit a new action potential or contraction (as is the case with extra- or post-extrasystolic contractions), and they do not affect the electrical or mechani ...
... detection of the onset of theQRS complex and consist of two biphasic + 7.7 V pulses spanning a total duration of 20 ms. These signals do not elicit a new action potential or contraction (as is the case with extra- or post-extrasystolic contractions), and they do not affect the electrical or mechani ...
Effect of Systemic Hypoxia and Reoxygenation on Electrical Stability
... cycle (LD cycle) in disorders of pulmonary ventilation. The ventricular arrhythmia threshold (VAT) was measured in female Wistar rats (adaptation to the light regime 12:12 h, ketamine/xylazine anesthesia 100 mg/15 mg/kg, i.m., open chest experiments). The conditions of the normal artificial ventilat ...
... cycle (LD cycle) in disorders of pulmonary ventilation. The ventricular arrhythmia threshold (VAT) was measured in female Wistar rats (adaptation to the light regime 12:12 h, ketamine/xylazine anesthesia 100 mg/15 mg/kg, i.m., open chest experiments). The conditions of the normal artificial ventilat ...
Rate Versus Rhythm Control Pharmacotherapy For Atrial Fibrillation
... Atrial fibrillation (AF) is the most common sustainedcardiac rhythm disturbance encountered by physicians. The management of AF isfocused on control of heart rate, correction of rhythm disturbance, andrisk-determined prophylaxis of thromboembolism. The goals of AF therapy are, aswith other serious d ...
... Atrial fibrillation (AF) is the most common sustainedcardiac rhythm disturbance encountered by physicians. The management of AF isfocused on control of heart rate, correction of rhythm disturbance, andrisk-determined prophylaxis of thromboembolism. The goals of AF therapy are, aswith other serious d ...
Left Septal Atrial Tachycardias: Electrocardiographic
... described (2). P wave analysis was applied during periods of atrioventricular (AV) block or post-ventricular pacing (Figure 2). The P waves were described based on the deviation from baseline during the T-P interval as being: 1) positive (): if there was a positive deviation from the isoelectric ba ...
... described (2). P wave analysis was applied during periods of atrioventricular (AV) block or post-ventricular pacing (Figure 2). The P waves were described based on the deviation from baseline during the T-P interval as being: 1) positive (): if there was a positive deviation from the isoelectric ba ...