Ventricular Assist Devices and Total Artificial Hearts
... June 2016, 6% (16) required a device pump exchange during the study period, and all but one patient survived until hospital discharge.[27] Pediatric Patients Publications on children using VADs as a bridge to transplantation have reported positive outcomes. For example, a retrospective study of all ...
... June 2016, 6% (16) required a device pump exchange during the study period, and all but one patient survived until hospital discharge.[27] Pediatric Patients Publications on children using VADs as a bridge to transplantation have reported positive outcomes. For example, a retrospective study of all ...
Metabolic Response during Impending Myocardial
... observed by all investigators.21 44 In similar patients, a positive correlation between plasma glycerol levels and arrhythmias has also been observed.33 FFA can cause arrhythmias in other species without changes in catecholamine activity. In the normal dog, intravenous infusions of FFA as their sodi ...
... observed by all investigators.21 44 In similar patients, a positive correlation between plasma glycerol levels and arrhythmias has also been observed.33 FFA can cause arrhythmias in other species without changes in catecholamine activity. In the normal dog, intravenous infusions of FFA as their sodi ...
English
... Some authors have proposed a multifactorial origin for QT prolongation and TdP4. An increase in the QT interval may be reached by multiple mechanisms that in conjunction alter the normal capacity or repolarization reserve with subsequent arrhythmias. The acting mechanisms for the abnormal increase o ...
... Some authors have proposed a multifactorial origin for QT prolongation and TdP4. An increase in the QT interval may be reached by multiple mechanisms that in conjunction alter the normal capacity or repolarization reserve with subsequent arrhythmias. The acting mechanisms for the abnormal increase o ...
insight review articles
... function. Various areas of the heart can show automaticity, but cardiac rhythmicity is normally controlled by the sinus node, which is intrinsically the fastest pacemaker. Inward currents (positive ions entering the cell) depolarize the cell membrane (making the cell interior more positive), and out ...
... function. Various areas of the heart can show automaticity, but cardiac rhythmicity is normally controlled by the sinus node, which is intrinsically the fastest pacemaker. Inward currents (positive ions entering the cell) depolarize the cell membrane (making the cell interior more positive), and out ...
Chapter 10 Drug differences between ACE-inhibitors in experimental settings and clinical practice.
... Attenuation of the remodelling process After myocardial infarction, the left ventricle can change its shape and size as a response to loss of viable myocytes. This may lead to early infarct expansion, accompanied by compensatory hypertrophy in the non-infarcted region and progressive global dilatati ...
... Attenuation of the remodelling process After myocardial infarction, the left ventricle can change its shape and size as a response to loss of viable myocytes. This may lead to early infarct expansion, accompanied by compensatory hypertrophy in the non-infarcted region and progressive global dilatati ...
Single Preconditioning Stimulus Becomes
... kinins seem to have cardioprotective actions. In isolated rat hearts with ischemia-reperfusion injuries, perfusion with bradykinin reduces the duration and incid ence of ventricular fibrillation, improves cardiodynamics, reduces release of cytosolic enzymes, and preserves energy -rich phosphates and ...
... kinins seem to have cardioprotective actions. In isolated rat hearts with ischemia-reperfusion injuries, perfusion with bradykinin reduces the duration and incid ence of ventricular fibrillation, improves cardiodynamics, reduces release of cytosolic enzymes, and preserves energy -rich phosphates and ...
Screening for undiagnosed atrial fibrillation in the community
... period. Eighty-one patients had known atrial fibrillation (9.6% of those screened) and 35 of these patients were not on oral anticoagulation. New atrial fibrillation was diagnosed on the initial ECG in 10 patients (1.2% of those screened). Home ECG recordings were obtained on 403 individuals with a ...
... period. Eighty-one patients had known atrial fibrillation (9.6% of those screened) and 35 of these patients were not on oral anticoagulation. New atrial fibrillation was diagnosed on the initial ECG in 10 patients (1.2% of those screened). Home ECG recordings were obtained on 403 individuals with a ...
Ventricular septal defect - ePrints
... the confines of the normal ventricular septum. It is difficult, nonetheless, to provide an all-encompassing, and at the same time simple, definition. In part, this is because the boundaries of the hole between the ventricles, and therefore the borders of the curved surface chosen to represent the se ...
... the confines of the normal ventricular septum. It is difficult, nonetheless, to provide an all-encompassing, and at the same time simple, definition. In part, this is because the boundaries of the hole between the ventricles, and therefore the borders of the curved surface chosen to represent the se ...
Cardiopulmonary Exercise Testing Variables
... confirm our alternate hypothesis that key CPX variables reflect the degree of cardiac dysfunction assessed by measures obtained from echocardiography with TDI in HF-NEF. Our results are consistent in several respects with previous investigations examining the relationship between echocardiography w ...
... confirm our alternate hypothesis that key CPX variables reflect the degree of cardiac dysfunction assessed by measures obtained from echocardiography with TDI in HF-NEF. Our results are consistent in several respects with previous investigations examining the relationship between echocardiography w ...
Ventricular septal defect - Orphanet Journal of Rare Diseases
... the confines of the normal ventricular septum. It is difficult, nonetheless, to provide an all-encompassing, and at the same time simple, definition. In part, this is because the boundaries of the hole between the ventricles, and therefore the borders of the curved surface chosen to represent the se ...
... the confines of the normal ventricular septum. It is difficult, nonetheless, to provide an all-encompassing, and at the same time simple, definition. In part, this is because the boundaries of the hole between the ventricles, and therefore the borders of the curved surface chosen to represent the se ...
Chapter 96 - Extras Springer
... Traditionally (and correctly), dissociation between atrial and ventricular activity during tachycardia has been considered a hallmark of VT. As pointed out previously, however,4 some form of ventriculoatrial conduction is frequently present during VT. Identification of atrial activity during VT can ...
... Traditionally (and correctly), dissociation between atrial and ventricular activity during tachycardia has been considered a hallmark of VT. As pointed out previously, however,4 some form of ventriculoatrial conduction is frequently present during VT. Identification of atrial activity during VT can ...
Clinical predictors of the defibrillation threshold with the
... between a variety of clinical variables and the defibrillation threshold or the likelihood of successful defibrillator implantation. Kelly et al. (1) reviewed the results of epicardial defibrillator implantation in 42 of 62 patients receiving a spring and large patch electrode configuration. A stand ...
... between a variety of clinical variables and the defibrillation threshold or the likelihood of successful defibrillator implantation. Kelly et al. (1) reviewed the results of epicardial defibrillator implantation in 42 of 62 patients receiving a spring and large patch electrode configuration. A stand ...
Non-Invasive Transcutaneous Pacing
... Clinicians must not rely solely on the defibrillator’s classification of beats as intrinsic or paced to determine electrical capture. Consider the situation where the patient's intrinsic HR is 62, and the pacer is set at a rate of 60. Since the two rates are very close, pacer spikes and intrinsic be ...
... Clinicians must not rely solely on the defibrillator’s classification of beats as intrinsic or paced to determine electrical capture. Consider the situation where the patient's intrinsic HR is 62, and the pacer is set at a rate of 60. Since the two rates are very close, pacer spikes and intrinsic be ...
Catheter Ablation in New Zealand
... Catheter ablation is a minimally invasive procedure performed by Cardiac electrophysiology subspecialised Cardiologists for the treatment of many cardiac arrhythmias. It is a mature but continually evolving technology with clear indications for use as first-line treatment in certain defined populati ...
... Catheter ablation is a minimally invasive procedure performed by Cardiac electrophysiology subspecialised Cardiologists for the treatment of many cardiac arrhythmias. It is a mature but continually evolving technology with clear indications for use as first-line treatment in certain defined populati ...
Systematization and clinical study of `dextroversion, mirror
... cavity (Sodi Pallares et al., I959); these investigating the last three variations and it potentials are also found in aVL and, con- enables us to complete the diagnosis. Howsequently, in lead I. The voltage of the ven- ever, the x-rays and the electrocardiogram tricular complexes diminishes progres ...
... cavity (Sodi Pallares et al., I959); these investigating the last three variations and it potentials are also found in aVL and, con- enables us to complete the diagnosis. Howsequently, in lead I. The voltage of the ven- ever, the x-rays and the electrocardiogram tricular complexes diminishes progres ...
Review Article Heart failure with preserved ejection fraction
... Diastolic dysfunction is characterised by abnormalities in LV relaxation, filling, distensibility, and stiffness. A detail discussion on assessment follows. Invasive assessment of LV diastolic function Invasively acquired evidence of diastolic dysfunction for abnormal LV relaxation, filling, diastol ...
... Diastolic dysfunction is characterised by abnormalities in LV relaxation, filling, distensibility, and stiffness. A detail discussion on assessment follows. Invasive assessment of LV diastolic function Invasively acquired evidence of diastolic dysfunction for abnormal LV relaxation, filling, diastol ...
Pericardial diseases
... Thirty-one to 57% of pericardial effusion have a neoplastic etiology in the dog.7,9 Therefore, a meticulous examination of the heart for the presence of any suspicious mass by echocardiography is mandatory when evaluating a dog with pericardial effusion. 20 The most common tumors include hemangiosar ...
... Thirty-one to 57% of pericardial effusion have a neoplastic etiology in the dog.7,9 Therefore, a meticulous examination of the heart for the presence of any suspicious mass by echocardiography is mandatory when evaluating a dog with pericardial effusion. 20 The most common tumors include hemangiosar ...
Radiofrequency ablation on veno-arterial extracorporeal life support
... In the largest reported series of infant ablations 88% of tachycardia substrates were eliminated, with a 5% major complication rate and a 0.7% mortality rate.7 Despite these promising results, ablation is still usually reserved for cases where medical therapy has failed, as complication rates are hi ...
... In the largest reported series of infant ablations 88% of tachycardia substrates were eliminated, with a 5% major complication rate and a 0.7% mortality rate.7 Despite these promising results, ablation is still usually reserved for cases where medical therapy has failed, as complication rates are hi ...
Rhythm management devices
... Class I - There is evidence and/or general agreement that permanent pacing is indicated in patients with sinus node dysfunction in the following settings: • Documented symptomatic bradycardia, including frequent sinus pauses that produce symptoms. (Level of Evidence: C) • Symptomatic chronotropic in ...
... Class I - There is evidence and/or general agreement that permanent pacing is indicated in patients with sinus node dysfunction in the following settings: • Documented symptomatic bradycardia, including frequent sinus pauses that produce symptoms. (Level of Evidence: C) • Symptomatic chronotropic in ...
The Normal ECG and its (Normal) Variants
... This chapter is not divided in two sections because the knowledge of the normal ECG and its normal variants is as essential for those readers choosing to glance as for those preferring the full picture. This chapter can be used as a dictionary by both types of readers. When we interpret an ECG we co ...
... This chapter is not divided in two sections because the knowledge of the normal ECG and its normal variants is as essential for those readers choosing to glance as for those preferring the full picture. This chapter can be used as a dictionary by both types of readers. When we interpret an ECG we co ...
Cardiac myocytes` dynamic contractile behavior
... Laske and Iaizzo, 2005). Right and left apex has been distinguished by increase of its surface area and relative cell alignment during heart looping (Manasek et al., 1972). Electromechanical coupling demonstrated that increased contraction force following an increase in stimulation frequency was sig ...
... Laske and Iaizzo, 2005). Right and left apex has been distinguished by increase of its surface area and relative cell alignment during heart looping (Manasek et al., 1972). Electromechanical coupling demonstrated that increased contraction force following an increase in stimulation frequency was sig ...
Ratio of Peak Early to Late Diastolic Filling Velocity of Transmitral
... Western world is approximately 25% [1] and its association with cardiovascular disease is well established. If left untreated, systemic hypertension may lead to progressive myocardial hypertrophy and left ventricular (LV) diastolic dysfunction [2–4], both of which are responsible for the development ...
... Western world is approximately 25% [1] and its association with cardiovascular disease is well established. If left untreated, systemic hypertension may lead to progressive myocardial hypertrophy and left ventricular (LV) diastolic dysfunction [2–4], both of which are responsible for the development ...
Amiodarone versus Sotalol for Atrial Fibrillation
... obtained less than 24 hours apart. If spontaneous conversion had not occurred by day 28 after randomization, direct-current (DC) cardioversion was performed with up to four standardized monophasic shocks (one at 100 J, one at 200 J, and two at 360 J). In the final year of the study, biphasic shocks ...
... obtained less than 24 hours apart. If spontaneous conversion had not occurred by day 28 after randomization, direct-current (DC) cardioversion was performed with up to four standardized monophasic shocks (one at 100 J, one at 200 J, and two at 360 J). In the final year of the study, biphasic shocks ...
R-wave peak time at DII: A new criterion for
... patients presenting with wide QRS complex tachycardias. Differentiating between SVT and VT in this setting has important clinical and therapeutic implications, and ECG is of paramount importance in this aim. Although ECG deductive analysis has been the cornerstone for differential diagnosis of wide ...
... patients presenting with wide QRS complex tachycardias. Differentiating between SVT and VT in this setting has important clinical and therapeutic implications, and ECG is of paramount importance in this aim. Although ECG deductive analysis has been the cornerstone for differential diagnosis of wide ...
Cardiac Resynchronization in Patients with Atrial Fibrillation
... must be confirmed by examining stored electrograms to rule out problems such as intermittent undersensing, far-field R wave sensing by the atrial channel, and electromagnetic interference. Because of intermittent atrial undersensing, a single prolonged episode may be recorded as multiple shorter epi ...
... must be confirmed by examining stored electrograms to rule out problems such as intermittent undersensing, far-field R wave sensing by the atrial channel, and electromagnetic interference. Because of intermittent atrial undersensing, a single prolonged episode may be recorded as multiple shorter epi ...
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.