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Results 501 - 550 of 1019
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Hasdai D - - 2000
OBJECTIVES: This study characterized clinical factors predictive of cardiogenic shock developing after thrombolytic therapy for acute myocardial infarction (AMI). BACKGROUND: Cardiogenic shock remains a common and ominous complication of AMI. By identifying patients at risk of developing shock, preventive measures may be implemented to avert its development. METHODS: We analyzed ...
Neri E - - 2000
A 69-year-old man presented at our emergency department in marginal hemodynamic condition due to hemorrhagic shock and cardiac tamponade. Two months earlier, he had undergone total gastrectomy and left lobe hepatectomy for invasive gastric cancer. Delayed iatrogenic laceration of the right ventricle, consequent to the abdominal procedure, was the uncommon ...
Birnbacher R - - 2000
Survival after severe intrauterine myocardial infarction has not been reported previously. We describe the course of a neonate with a structurally normal heart, who presented with cardiogenic shock at birth due to intrauterine myocardial infarction with a huge ventricular aneurysm. Myocardial perfusion was assessed noninvasively by means of 99mTc-Sestamibi, a ...
Barbash I M - - 2000
BACKGROUND: The beneficial effect of on-site catheterization facilities on the survival of all patients with myocardial infarction complicated by cardiogenic shock has been questioned. Our objective was to evaluate the impact of the availability of on-site catheterization facilities on the outcome of unselected patients with cardiogenic shock. METHODS AND RESULTS: ...
Shieh J P JP Department of Anesthesiology, Chi-Mei Foundation Hospital, Tainan, Taiwan, - - 1999
Single dose intravenous amiodarone has been widely used and shown to be effective to treat supraventricular and ventricular arrhythemias in cardiac surgery. We, herein, report a 60-year-old female patient, sustaining cardiogenic shock in the course of percutaneous transluminal coronary angioplasty (PTCA) for unstable angina unrelieved by medication including nitroglycerin, succumbed ...
Shepard R K - - 1999
INTRODUCTION: Shocks given during the vulnerable period of cardiac repolarization may induce ventricular fibrillation (VF). However, the relationship of the vulnerable period and the monophasic action potential (MAP) has not yet been reported in humans. The purpose of this study was, therefore, to determine how the monophasic action potential recorded ...
Fuster V - - 1999
The results of treatment of 250 patients with established acute myocardial infarction in a coronary care unit in a university hospital are described. The criteria for diagnosis have been carefully defined. In 62 percent of patients admitted with a tentative diagnosis of acute infarction, the initial impression was confirmed. Fifteen ...
Scheler C - - 1999
Heat shock protein Hsp27 occurs in a complex pattern in human myocardial tissue. Normal and failing explanted human heart from patients with dilated cardiomyopathy (DCM) or ischemic heart failure (IHF), respectively, were analyzed by high resolution two-dimensional electrophoresis (23x30 cm) and Hsp27 immunostaining. Twelve Hsp27 spots in DCM samples were ...
Nomura F - - 1999
BACKGROUND: Heat shock proteins have been shown to enhance myocardial tolerance of ischemia-reperfusion injury and are induced in the myocardium of many animals by various stressors. METHODS: To assess the effects and time course of the inducible form of heat shock protein 70, we raised the rectal temperature of 15 ...
Wollenek G - - 1999
Because children with severe myocardial dysfunction have limited therapeutic options, mechanical support of a failing heart is a matter of great interest. In the setting of cardiogenic shock or severe low cardiac output and hypoperfusion, extracorporeal membrane oxygenation (ECMO) can produce decisive improvements. The criteria for successful treatment include appropriate ...
Banville I - - 1999
The patterns of transmembrane potential on the whole heart during and immediately after fibrillation-inducing shocks are unknown. To study arrhythmia induction, we recorded transmembrane activity from the anterior and posterior epicardial surface of the isolated rabbit heart simultaneously using 2 charge-coupled device cameras (32,512 pixels, 480 frames/second). Isolated hearts were ...
Suguta M - - 1999
A patient with a right ventricular infarction was resuscitated with percutaneous cardiopulmonary support (PCPS), after attempts at reperfusion, high-dose inotropic support and intra-aortic balloon counterpulsation failed to improve the hemodynamic compromise. Emergency PCPS improved the cardiogenic shock and the reduced right ventricular load, allowing the ischemic right ventricle to recover ...
Lin C M - - 1999
We present a case of glyphosate-induced cardiogenic shock in a young man. The patient a 26-year-old man, presented with nausea and vomiting 4 hours after attempting suicide by drinking 150 mL of glyphosate surfactant. Cardiogenic shock with accelerated idio-ventricular rhythm on electrocardiography developed after admission. Intravenous injection of epinephrine, atropine, ...
Yip H K - - 1999
Although acute left main coronary artery (LMCA) occlusion is a rare angiographic finding, it carries a very high mortality rate and most of the patients with this clinical condition die from sudden death or cardiogenic shock due to malignant arrhythmia or pump failure. The high mortality rate and tendency to ...
Haley J H JH Division of Cardiovascular Diseases and Internal Medicine, Mayo Clinic Rochester, Minn 55905, - - 1999
Dynamic left ventricular outflow tract (LVOT) obstruction has traditionally been associated with hypertrophic obstructive cardiomyopathy. Recently, acute dynamic LVOT obstruction has been described as a complication of myocardial infarction (MI). Herein the cases of 3 patients are described, all of whom presented with a systolic murmur and electrocardiographic evidence of ...
Meldrum D R - - 1999
BACKGROUND: The purposes of this study were to (1) determine whether functional heat-shock protein 72 (HSP-72) may be delivered into the heart, (2) determine whether HSP-72 itself is protective against endotoxin (lipopolysaccharide [LPS]-induced cardiodepression, and (3) compare relative protection and time courses required for protection for thermally induced HSP-72 versus ...
Pagan-Carlo L A - - 1999
STUDY OBJECTIVES: Direct current (DC) shocks to the heart cause morphologic and functional myocardial damage. Previous studies have suggested that acute DC shock injury is free radical mediated and that the administration of antioxidant enzymes superoxide dismutase and catalase can reduce the level of DC shock-induced free radicals. Angiotensin-converting enzyme ...
Hollenberg S M - - 1999
PURPOSE: To review the cause, epidemiology, pathophysiology, and treatment of cardiogenic shock. DATA SOURCES: A MEDLINE search of the English-language reports published between 1976 and 1998 and a manual search of bibliographies of relevant papers. STUDY SELECTION: Experimental, clinical, and basic research studies related to cardiogenic shock. DATA EXTRACTION: Data ...
Pacifico A - - 1999
OBJECTIVES: The objective of the study was to determine whether the occurrence of shocks for ventricular tachyarrhythmias during therapy with implantable cardioverter-defibrillators (ICD) is predictive of shortened survival. BACKGROUND: Ventricular tachyarrhythmias eliciting shocks are often associated with depressed ventricular function, making assessment of shocks as an independent risk factor difficult. ...
Reich J D - - 1999
We report the case of a 14-month-old girl with a wide complex dysrhythmia and cardiogenic shock due to abnormal coronary anatomy. She was kept alive for 20 days by full cardiocirculatory support, using venoarterial extracorporeal membrane oxygenation (VA ECMO). While she was on VA ECMO, a diagnosis was made of ...
Hasdai D - - 1999
BACKGROUND: Current knowledge of predictors of death among patients with cardiogenic shock complicating myocardial infarction is limited. We aimed to develop a risk assessment prognostic algorithm of 30-day mortality, including clinical and hemodynamic data prospectively collected among patients with cardiogenic shock in the 41,021-patient Global Utilization of Streptokinase and Tissue ...
Coulter T D - - 1999
The uses of the pulmonary artery catheter have been expanded from its original use, helping to assess the cardiac output and left ventricular filling pressure of patients with cardiac disease, to include the management of patients with trauma, septic shock, respiratory failure, and those undergoing high-risk surgeries. Although more than ...
Bana A - - 1999
One hundred and twenty-three patients had coronary artery bypass grafting (CABG) within 30 days of acute myocardial infarction (AMI) from May 1992 to November 1997. Commonest infarct was anterior transmural (61.8%) and commonest indication of surgery was post-infarct persistent or recurrent angina (69.1%). Ten patients were operated within 48 h ...
Goldberger J J - - 1999
Inappropriate shocks delivered by implantable cardioverter-defibrillators may occur in 15%-40% of patients treated with these devices. This article describes a rare cause for inappropriate shocks. Two patients received inappropriate shocks due to the presence of premature ventricular complexes during attempted reconfirmation of ventricular fibrillation. Knowledge of device algorithms for detection ...
Iliodromitis E K - - 1999
We have shown that isolated blood-perfused heat-stressed hearts are protected only when the blood donor animal has not been exposed to hyperthermia. Systematic hyperthermia results in larger infarction of both isolated control and heat-stressed hearts. In this study we investigated whether indomethacin inhibits in vivo the detrimental effect of hyperthermia. ...
Goldberg R J - - 1999
BACKGROUND: Limited information is available on trends in the incidence of and mortality due to cardiogenic shock complicating acute myocardial infarction. We studied the incidence of cardiogenic shock complicating acute myocardial infarction and in-hospital death rates among patients with this condition in a single community from 1975 through 1997. METHODS: ...
Yamashita C - - 1999
Between January 1992 and December 1997, we employed percutaneous cardiopulmonary support (PCPS) using a centrifugal pump in 25 patients. In 21 of them, PCPS was used postcardiotomy. These patients could not be weaned from cardiopulmonary bypass due to profound ventricular failure. As for the other 4 patients, PCPS was used ...
Pérez-Castellano N - - 1999
This retrospective study evaluates the influence of an invasive strategy of urgent coronary revascularization on the in-hospital mortality of patients with acute myocardial infarction (AMI) complicated early by cardiogenic shock. Among 1,981 patients with AMI admitted to our institution from 1994 to 1997, 162 patients (8.2%) developed cardiogenic shock unrelated ...
Patwardhan A - - 1999
We investigated whether the degree of phase coupling among orthogonal electrocardiograms during ventricular fibrillation (VF) was correlated with defibrillation shock outcome. We used cross bispectrum to estimate the degree of phase coupling. In dogs, VF was electrically induced and terminated with a defibrillation shock with a 50% probability of success. ...
Katsuyama K - - 1999
BACKGROUND: The mechanism underlying the fatal complications in jaundiced states after shock has not been fully clarified. The present study was designed to examine the effect of hemorrhagic shock on myocardial high-energy phosphate stores and the arterial ketone body ratio (AKBR:acetoacetate/beta-hydroxybutyrate), which reflects the redox state of the liver mitochondria, ...
Zivin A - - 1999
BACKGROUND: The relationship between postdefibrillation ventricular arrhythmias and shock strength is poorly understood in patients with implantable defibrillators. The purpose of this study was to characterize the relationship between postdefibrillation ventricular arrhythmias and shock strength. METHODS AND RESULTS: Forty-three patients with an implanted defibrillator underwent six separate inductions of ventricular ...
Berger P B - - 1999
BACKGROUND: Although 30-day survival is increased in patients with acute myocardial infarction complicated by cardiogenic shock who undergo coronary revascularization, the longer-term outcome in such patients and the duration of benefit from revascularization are unknown. METHODS AND RESULTS: We analyzed 30-day survivors of acute myocardial infarction in the Global Utilization ...
Hochman J S - - 1999
BACKGROUND: Cardiogenic shock (CS) is the leading cause of death in patients hospitalized with acute myocardial infarction (MI). Nonrandomized studies suggest reduced mortality rate with revascularization. TRIAL DESIGN: The SHOCK trial is a multicenter, randomized, and unblinded study with a Registry for trial-eligible and ineligible nonrandomized patients. The trial is ...
Karagueuzian H S - - 1999
According to the upper limit of vulnerability (ULV), failed defibrillation (DF) shocks reinitiate ventricular fibrillation (VF) by falling on the vulnerable period of one or more of the fibrillation wavefronts. The failed shock first induces reentry (stage I VF), which within few cycles degenerate to stage II VF. We developed ...
Babuty D - - 1999
Two cases are reported (both men, one 72 and one 54 years old) of inappropriate shocks delivered by an implantable cardiac defibrillator (ICD) device, which oversensed the myopotentials induced by deep breathing and Valsalva manoeuvre. No damage to leads was associated with the oversensing of myopotentials. The mechanism of the ...
Anvari A - - 1998
This study determined the impact of clinical characteristics on shock occurrence and survival in patients with implantable cardioverter-defibrillator (ICD). During a follow-up of 27 +/- 18 months, the actuarial incidence of appropriate shocks in 200 consecutive patients was 18, 36 and 72% at 1, 3, and 5 years, respectively. Coronary ...
Rouby Y - - 1998
We report a case of isolated myocardial involvement due to Aspergillus sp., in a patient with multiple organ failure but no demonstrable immune deficiency apart from corticosteroid therapy given for the three weeks prior to hospitalization. This patient died of septic shock 7 days after hospitalization. Aspergillus was isolated only ...
Piper R D - - 1998
1. Sepsis is the leading reversible cause of death in patients requiring modern intensive care services. 2. In this group of patients, death usually results from progressive multiple organ failure, rather than overwhelming primary infection. 3. The pathophysiology of sepsis-induced remote organ dysfunction is incompletely understood, although it is believed ...
Yuda S - - 1998
Two cases of acute myocardial infarction due to an occlusion of the left main coronary artery (LMCA) are presented. Their cardiogenic shock was successfully treated with percutaneous cardiopulmonary support (PCPS), in addition to reperfusion therapy and an intraaortic balloon pump. The 2 patients were able to be weaned from PCPS ...
Suffredini A F - - 1998
OBJECTIVE: To review the clinical manifestations and mechanisms of cardiac dysfunction in septic shock. METHODS: Literature review of selected clinical studies and animal models. RESULTS: Depressed myocardial contractile function is a common consequence of severe infections. Bacterial factors, in conjunction with host inflammatory mediators, produce a profile of reversible cardiac ...
Katsumura Y - - 1998
Factors that predispose pulmonary thromboembolism to infarction have not been completely understood. The present autopsy study was carried out to evaluate these factors both clinically and pathologically. Between 36 subjects with pulmonary infarction and 33 individuals who had multiple pulmonary thromboembolism but no infarction, clinical and pathological features including congestive ...
Roy J W - - 1998
Fluid resuscitation is the usual therapy for hemorrhagic shock, and frequently consists of the infusion of large volumes of electrolyte solutions. However, to be successful, this therapy should be implemented soon after injury. A new treatment method in which the infusion could be delayed might result in a greater survival ...
Tokano T - - 1998
INTRODUCTION: The effect of implantable defibrillator shocks on cardiac hemodynamics is poorly understood. The purpose of this study was to test the hypothesis that ventricular defibrillator shocks adversely effect cardiac hemodynamics. METHODS AND RESULTS: The cardiac index was determined by calculating the mitral valve inflow with transesophogeal Doppler during nonthoracotomy ...
Dzavík V - - 1998
BACKGROUND: Cardiogenic shock continues to be an ominous complication of acute myocardial infarction (AMI). Evidence from retrospective analyses, registries and observational studies suggests that aggressive management using emergent revascularization strategies can bring about significant improvement in survival in this setting. Several studies have identified age as an independent predictor of ...
Smith S W - - 1998
A case of acute fulminant cardiovascular beriberi, or "shoshin beriberi," is presented. Beriberi is classified as "dry" (neurologic) or "wet" (cardiovascular) and may be mixed. "Wet" beriberi refers to a spectrum of clinical manifestations ranging from a hyperdynamic state with high output cardiac failure to fulminant failure with collapsed peripheral ...
Cooper R A - - 1998
BACKGROUND: This study tested the ability of sequential shocks delivered through dual-current pathways to lower the atrial defibrillation threshold (ADFT) compared with a biphasic shock through a standard single-current pathway. METHODS AND RESULTS: Electrodes were positioned in the right atrial appendage (RA), left subclavian vein (LSV), proximal coronary sinus (CSos), ...
Bolli R - - 1998
Stunning has been described in every species studied so far, and there is no reason to suspect that humans are the exception. The exact prevalence and severity of stunning in humans remain unknown because of our inability to diagnose this condition. In most cases, stunning probably does little harm. However, ...
Qian Y Z - - 1998
Heat shock (HS) results in the expression of heat shock proteins (hsp) and confers tolerance against subsequent ischemic injury. We examined the extent of myocardial protection in vivo, and determined the level of hsp expression induced by HS as a function of time. Anesthetized rats were subjected to HS by ...
Bode F - - 1998
OBJECTIVE: To assess the effect of defibrillation shocks on cardiac and circulating catecholamines. DESIGN: Prospective examination of myocardial catecholamine balance during dc shock by simultaneous determination of arterial and coronary sinus plasma concentrations. Internal countershocks (10-34 J) were applied in 30 patients after initiation of ventricular fibrillation for a routine ...
Bates E R - - 1998
Modern coronary care unit interventions have not reduced the high mortality rate associated with cardiogenic shock due to acute myocardial infarction. Results with thrombolytic therapy have also been disappointing because of poor infarct artery patency rates in a low coronary flow state. Percutaneous transluminal coronary angioplasty appears to be a ...
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