Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0018801 (heart failure)
 72,216 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Radionuclide ventriculography was used to evaluate the functional structural parameters of the right ventricle systole and diastole in 100 patients with paroxysmal tachyarrhythmia without signs of cardiac insufficiency (42 with cardiac fibrillation, 35--supraventricular tachycardia, 23--with ventricular arrhythmia). Results indicate that radionuclide ventriculography allows to evaluate objectively the functional state of the right ventricle in patients with paroxysmal tachycardia, detect early signs of deterioration of its hemodynamic productivity and contractile capacity in patients refractory to treatment of cardiac arrhythmias.
 ...
PMID:[The right ventricle and tachyarrhythmias. The structural-functional characteristics studied by radionuclide ventriculography]. 144 61

A 62-year-old woman was admitted our hospital because of concussion of the brain. The level of consciousness improved within several days. Cardiac examination was performed because the patient had experienced feelings of fainting since one year previously, and heart murmur also was heard. The electrocardiogram showed WPW configuration. At the same time that she complained of feelings of fainting, the electrocardiogram showed supraventricular tachycardia. The echocardiogram showed displacement of the septal tricuspid leaflet and mild tricuspid valve, regurgitation. Cardiac catheterization was performed and, using the intracardiac electrocardiogram, we confirmed atrialized right ventricle. We diagnosed this patient as having Ebstein's anomaly with WPW syndrome. The clinical manifestations of this anomaly are quite variable, depending upon the spectrum of pathology and the presence of associated malformations. It is well documented that a considerable proportion of these patients are able to survive into adult life. However, the patient who survives into the sixth decade without a sign of heart failure is extremely rare. We speculate that this patient had not developed right ventricular failure until her 60's because she had a milder form of Ebstein's anomaly and did not have any other congenital heart disease.
 ...
PMID:[A 62-year-old survivor with Ebstein's anomaly without right ventricular failure]. 148 Aug 34

The authors investigated the long-term therapeutic effect in 33 patients after a medicamentous reversal of recent atrial fibrillation and 18 patients after reversal of an attack of supraventricular tachycardia (SVT). None of the patients had signs of cardiac failure. A change to sinus rhythm was achieved in the group with atrial fibrillation by digoxin with verapamil, in the group with SVT by verapamil. Treatment was then adjusted, based on testing by means of diagnostic oesophageal pacing. The basic drug for long-term use in atrial fibrillation was digoxin either as monotherapy or in combination; the majority of patients with SVT had verapamil treatment. At the end of the period 24.5 +/- 8.4 (12-36) months after the reversal in the group with atrial fibrillation 8 (25.8%) had permanent atrial fibrillation or different therapy on account of atrial fibrillation; short-term attacks of palpitation were recorded during the investigation period in 16 (51.6%), and the remaining 7 patients (22.6%) had no complaints. In the group with SVT none of the patients was hospitalized on account of persisting dysrhythmia and it was not necessary to alter treatment. Testing treatment of supraventricular dysrhythmias by means of diagnostic oesophageal pacing is of prognostic importance and the authors consider it the method of choice.
 ...
PMID:[Long-term effect of drug therapy in supraventricular dysrhythmia evaluated by diagnostic esophageal cardiac pacing]. 149 66

The records of 598 patients undergoing a thoracic surgical procedure for lung cancer from 1975 through 1989 were reviewed for occurrence of cardiac arrhythmias and myocardial ischemic events. Atrial tachycardias occurred in 16% (94/598); atrial fibrillation was preponderant (87%), followed by supraventricular tachycardia and atrial flutter. Patients with recurrent episodes of dysrhythmias had a significantly higher mortality rate than those without episodes or with a single episode only (17% versus 2.4%; p less than 0.01). Transient ischemic electrocardiographic changes were documented in 23 patients (3.8%) and myocardial infarction in 7 (1.2%). An abnormal preoperative exercise test result and intraoperative hypotension were strongly associated with both dysrhythmia and ischemia (p less than 0.01). Pneumonectomy, ischemic changes on the electrocardiogram, and cardiac enlargement were also associated with arrhythmias (p less than 0.01). A weaker association (p less than 0.05) was found between postoperative arrhythmias and old myocardial infarction (greater than 6 months), arterial hypertension, and heart failure. Pulmonary function had no predictive value in this respect. A history of angina or old myocardial infarction was predictive of transient postoperative myocardial ischemia but not myocardial infarction. Despite improved anesthetic and monitoring techniques and more frequent use of the intensive care unit postoperatively in the last decade, the incidence of arrhythmias after thoracotomy has not decreased. More effective prevention is needed, particularly for patients with defined preoperative and perioperative risk factors.
 ...
PMID:Cardiac arrhythmias and myocardial ischemia after thoracotomy for lung cancer. 155 74

Adenosine has recently become widely available for the treatment of paroxysmal supraventricular tachycardia. In order to evaluate its role in the management of arrhythmias, we have reviewed the literature on the cellular mechanisms, metabolism, potential for adverse effects, and clinical experience of the efficacy and safety of intravenous adenosine. Adenosine produces transient atrioventricular nodal block when injected as an intravenous bolus. This is of therapeutic value in the conversion to sinus rhythm of the majority of paroxysmal supraventricular tachycardias, which involve the atrioventricular node in a re-entrant circuit. The mean success rate was 93% from over 600 reported episodes. Compared with other antiarrhythmic agents, adenosine is remarkable for its rapid metabolism and brevity of action, with a half-life of a few seconds. It commonly produces subjective symptoms, particularly chest discomfort, dyspnea, and flushing, which are of short duration only. No serious adverse effect has been reported. Arrhythmias may recur within minutes in a minority of patients. Comparative studies have shown that adenosine is as effective as verapamil in the treatment of supraventricular tachycardia, and has less potential for adverse effects. Patients with supraventricular tachycardia should initially be treated using vagotonic physical maneuvers. Immediate electrical cardioversion is indicated if the arrhythmia is associated with hemodynamic collapse. Adenosine is the preferred drug in those patients in whom verapamil has failed or may cause adverse effects, such as those with heart failure or wide-complex tachycardia. The safety profile of adenosine suggests that it should be the drug of first choice for the treatment of supraventricular tachycardia, but only limited comparative data to support this view are available at present.
 ...
PMID:Adenosine and the treatment of supraventricular tachycardia. 160 47

An hydropic infant was delivered at 32 weeks gestation by emergency Caesarean section for acute polyhydramnios. A diagnosis of cardiac rhabdomyomata was made on echocardiography. The baby survived 10 days, during which time repeated episodes of supraventricular tachycardia occurred. She eventually died of cardiac failure following an episode of septicaemia, convulsions and aspiration pneumonia. Necropsy showed multiple cardiac rhabdomyomata and numerous cerebral germinal layer and periventricular white matter nodules. This case stresses the importance of clinical investigations and perinatal necropsy in non-immune hydrops fetalis (NIHF) in determining the causes of clinical presentation and the underlying pathology.
 ...
PMID:Tachyarrhythmia, cardiac rhabdomyomata and fetal hydrops in a premature infant with tuberous sclerosis. 160 81

The purpose of this study was to define the prognostic value concerning in-hospital, two-month, and one-year mortality of an early echocardiographic estimation of left ventricular ejection fraction, relative to traditional clinical variables and a clinical prognostic index, in an unselected series of 193 patients following acute myocardial infarction. Left ventricular ejection fraction was determined within 72 hours by echocardiographic wall motion analysis within the frame of a nine-segment model. Clinical variables (age, number of acute myocardial infarctions, reinfarction, heart failure, cardiac arrest, ventricular arrhythmias, asystole, supraventricular tachycardia, nodal rhythm) and a calculated, previously published index, based on these variables, were recorded on day five post infarction and predischarge. The Killip class was recorded at the time of echocardiography. All variables were compared by a multivariate approach (Cox regression model). The results showed that left ventricular ejection fraction was the strongest predictor of early and late mortality and increasingly so over the period of observation. Age and maximal Killip class had a modest additional prognostic value, whereas the composite clinical prognostic index had no predictive power when early left ventricular ejection fraction was included in the statistical model.
 ...
PMID:Prognostication in acute myocardial infarction by early echocardiographic estimation of left ventricular ejection fraction. Multivariate statistical comparison with a clinical prognostic index and its components. 161 23

The long-term clinical effect of oral flecainide treatment was evaluated in 107 pts (10-82 yrs). Indications for treatment were: atrial fibrillation 38%, atrial flutter 16%, ventricular tachycardia 24%, ventricular ectopic beats 10% and supraventricular tachycardia 12%. Daily flecainide dosage was 200 (100-400) mg. Follow-up period 3 mths (15 days-15 mths). Based on the history and ECG flecainide had been effective in 51 pts. The improvement was most pronounced in pts suffering from supraventricular tachycardia involving an accessory bypass tract (84-92%). Flecainide had been discontinued in 50 pts due to: insufficient effect in 28, side effects in 17 and for other reasons in 5. The side effects indicating flecainide withdrawal (pts) were: cerebral symptoms (4), gastrointestinal complaints (2), bradyarrhythmias (2), heart failure (3) and suspected pro-arrhythmia (4). (Ventricular tachycardia in 3, 1:1 AV-conducting during atrial flutter in 1).
 ...
PMID:Antiarrhythmic treatment with flecainide (Tambocor). Clinical experience from 107 patients. 170 67

In a nine-year-old female, cardiac failure was erroneously attributed to idiopathic cardiomyopathy and cardiac transplantation was planned. The actual cause of cardiac failure was permanent junctional reciprocating tachycardia (PJRT), a rare form of supraventricular tachycardia. The diagnostic error was discovered before transplantation was performed and the arrhythmia was treated surgically. This resulted in return of near normal cardiac function.
 ...
PMID:Permanent junctional reciprocating tachycardia misdiagnosed as 'cardiomyopathy'. 187 52

A total of 13 (4.5%) of 290 patients with aborted sudden death had either documented (7; 54%) or strong presumptive evidence of supraventricular tachycardia that deteriorated into ventricular fibrillation. Six (46%) of the 13 had an accessory conduction pathway and either atrial fibrillation (5 patients) or paroxysmal atrioventricular (AV) reentrant tachycardia (1 patient) that deteriorated into ventricular fibrillation. Three patients with AV node reentrant tachycardia and four with atrial fibrillation and enhanced AV node conduction presented with supraventricular arrhythmias that deteriorated into ventricular fibrillation. Patients were treated with medical, surgical or catheter ablative procedures designed to prevent recurrences of supraventricular arrhythmias. Four patients received an implanted automatic defibrillator, but none had an appropriate device discharge. Over a follow-up period of 41.6 +/- 33.6 months, 12 patients are alive without symptomatic arrhythmias. One patient died because of severe chronic lung disease and heart failure. Supraventricular tachycardia was the cause of aborted sudden death in approximately 5% of patients referred for evaluation of sudden cardiac death. Treatment directed at prevention of supraventricular tachycardia was associated with an excellent prognosis. Current treatment techniques appear to obviate the need for automatic defibrillator therapy in these patients.
 ...
PMID:Patients with supraventricular tachycardia presenting with aborted sudden death: incidence, mechanism and long-term follow-up. 196 Mar 19


<< Previous 1 2 3 4 5 6 7 8 9 10 Next >>