Esperanza (Spanish Edition)
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Primera Y Segunda Declaracion de la Havana. There was no association of the arrhythmias with the clinical form of tetanus or with the presence of sympathetic overactivity. The present study demonstrated that major cardiovascular dysfunction, particularly sympathetic overactivity, occurs in all forms of tetanus, even in the milder ones. This has not been effectively detected with traditional monitoring in ICU and may not be properly treated. During pregnancy, there is an increase in metabolism, oxygen consumption, heart rate, stroke volume, cardiac output, blood volume and a decrease in blood pressure and peripheral resistance.
Studies have shown that during this period the occurrence of cardiac arrhythmias is not uncommon. Fortunately, malignant arrhythmias are rare. Herein we report two young patients who presented with symptomatic right ventricular outflow tachycardia during pregnancy that required antiarrhythmic therapy. Possible pathophysiologic mechanisms are discussed. O laudo deve ser redigido de forma clara e objetiva. Full Text Available To evaluate the reliability of high-resolution electrocardiography in the diagnosis of arrhythmogenic right ventricular cardiomyopathy in Boxers, 20 dogs with no structural cardiac alterations at echocardiographic examination were grouped on the basis of frequency of ventricular arrhythmias, evaluated by hour ambulatory ECG, and undergoing a high-resolution electrocardiography.
Differences in high-resolution ECG variables were not observed between groups.
Therefore, the results of this investigation suggest that high-resolution electrocardiography is not a useful method for the diagnosis of arrhythmogenic right ventricular cardiomyopathy in Boxers without detectable myocardial alterations or systolic dysfunction. Lone ventricular cardiomyopathy,. I cardiac catheterisation, including coronary arteriography and pulmonary Call your doctor if your baby or child: Tires easily when eating or playing Is not gaining Risk factors Ventricular septal defects may run in families and sometimes may occur with other Resultados: se evaluaron 1. Systolic ventricular filling.
The evidence of the ventricular myocardial band VMB has revealed unavoidable coherence and mutual coupling of form and function in the ventricular myocardium, making it possible to understand the principles governing electrical, mechanical and energetical events within the human heart. From the earliest Erasistratus' observations, principal mechanisms responsible for the ventricular filling have still remained obscured.
Contemporary experimental and clinical investigations unequivocally support the attitude that only powerful suction force, developed by the normal ventricles, would be able to produce an efficient filling of the ventricular cavities. The true origin and the precise time frame for generating such force are still controversial. Elastic recoil and muscular contraction were the most commonly mentioned, but yet, still not clearly explained mechanisms involved in the ventricular suction. Classical concepts about timing of successive mechanical events during the cardiac cycle, also do not offer understandable insight into the mechanism of the ventricular filling.
The net result is the current state of insufficient knowledge of systolic and particularly diastolic function of normal and diseased heart. Here we summarize experimental evidence and theoretical backgrounds, which could be useful in understanding the phenomenon of the ventricular filling. Anatomy of the VMB, and recent proofs for its segmental electrical and mechanical activation, undoubtedly indicates that ventricular filling is the consequence of an active muscular contraction.
Contraction of the ascendent segment of the VMB, with simultaneous shortening and rectifying of its fibers, produces the paradoxical increase of the ventricular volume and lengthening of its long axis. Specific spatial arrangement of the ascendent segment fibers, their interaction with adjacent descendent segment fibers, elastic elements and intra-cavitary blood volume hemoskeleton , explain the physical principles.
Left ventricular function in right ventricular overload. This study clarified regional and global functions of the distorted left ventricle due to right ventricular overload by gated radionuclide ventriculography RNV. The end-diastolic halves were determined in the same plane. Arrhythmogenic right ventricular dysplasia. Vignolo Puglia, W. The arrhythmogenic right ventricular dysplasia is a condition predominantly well defined with arrhythmic events.
We analyze three cases diagnosed by the group. These cases were presented as ventricular tachycardia with a morphology of left bundle branch block, presenting one of them aborted sudden death in evolution. The baseline electrocardiogram and signal averaging were abnormal in two of the three cases, like the echocardiogram.
The electrophysiological study was able to induce in the three patients with sustained monomorphic ventricular tachycardia morphology of left bundle branch block. The definitive diagnosis was made by right ventriculography in two cases and magnetic resonance imaging in the other.
Treatment included antiarrhythmic drugs in the three cases and the placement of an automatic defibrillator which survived a sudden death Author.
On the Threshold of Hope
Left Ventricular Assist Devices. Full Text Available Audience: The audience for this classic team-based learning cTBL session is emergency medicine residents, faculty, and students; although this topic is applicable to internal medicine and family medicine residents. Introduction: A left ventricular assist device LVAD is a mechanical circulatory support device that can be placed in critically-ill patients who have poor left ventricular function.
After LVAD implantation, patients have improved quality of life. Left- ventricular assist device patients may present to the emergency department ED with severe, life-threatening conditions. It is essential that emergency physicians have a good understanding of LVADs and their complications. Method: The method for this didactic session is cTBL. Systolic left ventricular function according to left ventricular concentricity and dilatation in hypertensive patients. Left ventricular hypertrophy [LVH, high left ventricular mass LVM ] is traditionally classified as concentric or eccentric based on left ventricular relative wall thickness.
We evaluated left ventricular systolic function in a new four-group LVH classification based on left ventricular dilatation Genetics Home Reference: arrhythmogenic right ventricular cardiomyopathy. Usefulness of ventricular endocardial electric reconstruction from body surface potential maps to noninvasively localize ventricular ectopic activity in patients. As radio frequency RF catheter ablation becomes increasingly prevalent in the management of ventricular arrhythmia in patients, an accurate and rapid determination of the arrhythmogenic site is of important clinical interest.
The aim of this study was to test the hypothesis that the inversely reconstructed ventricular endocardial current density distribution from body surface potential maps BSPMs can localize the regions critical for maintenance of a ventricular ectopic activity. Patients with isolated and monomorphic premature ventricular contractions PVCs were investigated by noninvasive BSPMs and subsequent invasive catheter mapping and ablation. Equivalent current density CD reconstruction CDR during symptomatic PVCs was obtained on the endocardial ventricular surface in six patients four men, two women, years , and the origin of the spontaneous ectopic activity was localized at the location of the maximum CD value.
AVENTURA OBSESION TRANSLATION
Compared with the last successful ablation site LAS , the mean and standard deviation of localization error of the CDR approach were In comparison, the distance between the LASs and the estimated locations of an equivalent single moving dipole in the heart was The obtained CD distribution of activated sources extending from the catheter ablation site also showed a high consistency with the invasively recorded electroanatomical maps. The noninvasively reconstructed endocardial CD distribution is suitable to predict a region of interest containing or close to arrhythmia source, which may have the potential to guide RF catheter ablation.
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Mixoma ventricular izquierdo. Dispositivos de asistencia ventricular : una realidad en Colombia. Objetivo: Presentar las alternativas actuales de asistencia ventricular disponibles para los pacientes con falla cardiaca Measurement of ventricular function using Doppler ultrasound. Doppler has wide application in the evaluation of valvular heart disease.
SPANISH EDITION! MARIA ESPERANZA Y LA GRACIA DE BETANIA
The need to know ventricular function is a much more common reason for an echocardiographic evaluation. Interestingly, Doppler examinations can assess ventricular function from many perspectives. Description of ventricular function entails measurement of the timing, rate and volume of ventricular filling and ejection. Doppler ultrasound examination reveals all of these aspects of ventricular function noninvasively, simply, and without great expense or radiation exposure, as described in this chapter.
Idiopathic ventricular tachycardia and fibrillation. Important data have recently been added to our understanding of sustained ventricular tachyarrhythmias occurring in the absence of demonstrable heart disease. Several physiopathological types of monomorphic VT can be presently individualized, according to their mode of presentation, their relationship to adrenergic stress, or their response to various drugs.
The long-term prognosis is usually good. Idiopathic polymorphic VT is a much rarer type of arrhythmia with a less favorable prognosis. Idiopathic ventricular fibrillation may represent an underestimated cause of sudden cardiac death in ostensibly healty patients. A high incidence of inducibility of sustained polymorphic VT with programmed ventricular stimulation has been found by our group, but not by others.
Long-term prognosis on Class IA antiarrhythmic medications that are highly effective at electrophysiologic study appears excellent. Left ventricular apical ballooning syndrome.