Search Results
Results 1001 - 1050 of 1435
< 16 17 18 19 20 21 22 23 24 25 26 >
Safar P - - 1993
Since 1970 we have investigated postischemic anoxic encephalopathy and potential treatments for cerebral resuscitation after cardiac arrest by cardiopulmonary-cerebral resuscitation (CPCR). The post-resuscitation syndrome has been studied at the levels of cell, organ, organism and community. Short-term and long-term models in rats, dogs, and monkeys have been developed, and an ...
McDonald R W - - 1993
Preliminary reporting of echocardiographic data by cardiac sonographers has become a key issue in the echocardiography community. A survey on this issue was sent to 248 academic physicians and 89 (35.8%) were returned. In response to a question in the survey, 76 physicians stated that they had at least a ...
Hart J - - 1993
The 'SCUD' raids on Israel during the Gulf War afforded a rare opportunity to examine the effect of mass acute fear on the cardiac health of the general population. Press reports suggested an alarming rise in cardiac deaths during the first missile raids. In order to ascertain this statement, we ...
Gazmuri R J - - 1992
Open-chest direct cardiac compression represents a more potent but highly invasive option for cardiac resuscitation when conventional techniques of closed-chest cardiac resuscitation fail after prolonged cardiac arrest. We postulated that venoarterial extracorporeal circulation might be a more effective intervention with less trauma. In the setting of human cardiac resuscitation, however, ...
Akins C W - - 1992
Hypothermic fibrillatory arrest is a technique of myocardial preservation that has a long history of use in cardiac surgery. Numerous studies have documented its efficacy in various subgroups of patients with coronary artery disease. This report reviews the research support of the tenets of the technique and reports the results ...
Karnegis J N - - 1992
The purpose of this study was to determine the accuracy of percussion of the left cardiac border. Sixty-six adult patients were studied. The left cardiac border as determined by percussion and marked with a calibrated lead marker was compared with that obtained by a chest X-ray. The error in locating ...
Nilsson G - - 1992
A 70-year-old male patient with a myocardial infarction, 3 months previously, happened to be wearing a Holter monitor at cardiac arrest during micturition. The patient had ventricular fibrillation (VF) and was successfully resuscitated by means of defibrillation. Analysis of the Holter tape revealed atrial fibrillation and secondary ventricular premature beats ...
Sager P T - - 1992
Patients who have sustained ventricular arrhythmias after myocardial infarction present with either a cardiac arrest or with hemodynamically stable sustained ventricular tachycardia. Recent reports have suggested a different electrophysiologic milieu in these two patient groups and a higher incidence of cardiac arrest in patients with a history of more than ...
del Nido P J - - 1992
BACKGROUND: Conventional cardiopulmonary resuscitation (CPR) for cardiac arrest after open-heart surgery in children is often unsuccessful despite the ability to perform open-chest massage. The purpose of this study was to review our results with mechanical support as rescue therapy in children with sudden circulatory arrest after cardiac surgery. METHODS AND ...
Beyersdorf F - - 1992
This report describes an initial experience applying warm glutamate/aspartate substrate-enriched blood cardioplegic solution to resuscitate hearts in 14 patients with witnessed perioperative arrest. Ten patients were in stable hemodynamic condition in the catheterization laboratory (n = 3) or intensive care unit when sudden irreversible fibrillation developed. It progressed to electromechanical ...
Krishnamoorthy M S - - 1992
The present work investigated the effect of preperfusion of ascending concentrations of lead acetate (LA) (10(-9), 10(-7) and 10(-5) M) on digoxin (DGN) cardiotoxicity in isolated frog heart, in order to look for any consequent variations in its lead-induced potentiation. The DGN perfusion time(s) and DGN exposure (micrograms DGN/10 mg ...
Huikuri H V - - 1992
Reduced heart rate (HR) variability is associated with increased risk of cardiac arrest in patients with coronary artery disease. In this study, the power spectral components of HR variability and their circadian pattern in 22 survivors of out-of-hospital cardiac arrest not associated with acute myocardial infarction were compared with those ...
Stoneham M D - - 1992
A case report is described with successful outcome of prolonged cardiopulmonary resuscitation in a 30-year-old man suffering from acute deep hypothermia. His lowest temperature recorded was 23 degrees C. Continuous external cardiac massage was required for a total of 4.5 h whilst rewarming was instituted. The patient eventually left hospital ...
Dougherty C M - - 1992
Imbalances in autonomic nervous system function have been posed as a possible mechanism that produces ventricular fibrillation and sudden cardiac arrest in patients with cardiovascular disease. Heart rate (HR) variability is described in survivors and nonsurvivors of sudden cardiac arrest within 48 hours after resuscitation using time and frequency domain ...
Lambert-Jensen P - - 1992
In recent years there has been a growing awareness of the possible hazards caused by anaesthetic gases in operating theatres. The laryngeal mask airway provides an alternative both to tracheal intubation and the face mask although the implications for operating theatre contamination have not been quantified. This paper describes the ...
Aker J - - 1992
Developmental strides in cardiopulmonary resuscitation were paralleled by acquired knowledge of pulmonary and cardiac physiology. The evolution of the current recommendations for cardiopulmonary resuscitation have evolved over the past 40 years as a result of human trial and error and have been authenticated through laboratory research and clinical experience. Current ...
Moreno-Cabral C E - - 1992
Total circulatory support for acute reversible myocardial failure is rarely used in clinical situations outside the postoperative period following cardiac surgery. We treated an 8-year-old girl who suffered acute viral myocarditis and sustained cardiac arrest requiring cardiopulmonary bypass for resuscitation. This was accomplished with the use of the portable cardiopulmonary ...
Bolgiano E - - 1992
A 22-year-old man eventually had a good neurologic recovery following prolonged coma after extracorporeal rewarming from profound hypothermia (24 degrees C) due to exposure. The patient was in full arrest for 60 minutes prior to institution of cardiopulmonary bypass (CPB). Total bypass time was 50 minutes. Cardiopulmonary bypass is the ...
Every N R - - 1992
The effect of coronary bypass surgery on recurrent cardiac arrest was estimated in 265 patients resuscitated from out of hospital cardiac arrest between 1970 and 1988. From this cohort, 85 patients (32%) underwent coronary bypass surgery after recovery from cardiac arrest and 180 patients (68%) were treated medically. A multivariate ...
Buff D D - - 1992
BACKGROUND: A circadian pattern has been convincingly demonstrated for the onset of many outpatient ischemic vascular events. A morning peak exists for the onset of acute myocardial infarction, sudden cardiac death, reversible myocardial ischemia, and ischemic stroke. Data regarding circadian patterns of disease in hospitalized patients, however, are lacking. We ...
Legault S E - - 1992
We evaluated the association of psychiatric morbidity during the early phase of admission to a coronary care unit with cardiac diagnosis and subsequent morbidity. Ninety-two patients admitted for the first time for presumed myocardial infarction were evaluated within 48 hours of hospitalization. Anxiety and depressive symptoms and cognitive impairment were ...
Dolgikh V T - - 1992
Effect of acute lethal blood loss on character and frequency of cardiac arrhythmias in postresuscitation period has been studied. Experiments were carried out on mongrel male rats resuscitated after 4- and 6-min clinical death caused by acute blood loss. Electric cardiac instability was found in early postresuscitation period. Pacemaker migration, ...
Dickey W - - 1992
The accuracy of decision-making of a semi-automatic defibrillator was assessed at 57 cardiac arrests in 55 patients. The initial rhythm was ventricular fibrillation at 40 arrests and was correctly identified in 37 (sensitivity 92.5%). In the other 17 arrests initial rhythms were not ventricular fibrillation and 16 were correctly identified ...
Powney J G - - 1992
OBJECTIVE: To determine the incidence and outcome of refractory cardiac arrest necessitating emergency coronary artery bypass grafting. DESIGN: Retrospective survey of cardiac catheterisation and surgical records. SETTING: The London Chest Hospital. PATIENTS: All patients requiring emergency coronary artery bypass grafting after cardiovascular collapse in the catheterisation suite between January 1984 ...
Anstadt M P - - 1992
Cardiopulmonary bypass (CPB) is currently advocated for treating refractory cardiac arrest. Direct Mechanical Ventricular Actuation (DMVA) is an alternative method that does not contact the blood and has other unique advantages for providing resuscitative circulatory support, including rapid application and relative technical simplicity. The purpose of this study was to ...
Liedholm L J - - 1992
The clinical distinction between cardiovascular and epileptic causes of loss of consciousness is sometimes difficult, but becomes more complicated when a primary epileptic seizure secondarily causes a cardiac arrest. This has been reported previously in only eight patients. We report an additional patient with cardiac arrest during a mesiobasal left ...
Hazinski M F - - 1992
Pediatric resuscitation is most frequently required for respiratory arrest. Cardiac arrest is a rare and ominous event and usually develops as a complication of shock or respiratory failure. Once asystolic cardiac arrest occurs, the outcome of any resuscitation is dismal; if cardiopulmonary arrest persists longer than 15 minutes in the ...
Baumgartner F J - - 1992
Hypothermic patients have been successfully rewarmed by a number of methods. However, when cardiac arrest occurs, as it frequently does at core temperatures of less than 27 degrees C, prolonged cardiopulmonary resuscitation (CPR) is required, because defibrillation can rarely be achieved until the patient has been rewarmed to 30 degrees ...
Cobb L A - - 1992
Since 1970, Seattle Fire Department paramedics have treated 5,120 victims of out-of-hospital ventricular fibrillation (VF). During the past decade, there was an impressive decline in the annual incidence of VF, probably reflecting a general reduction in age-adjusted mortality attributed to coronary heart disease. Since 1975, annual survival rates to hospital ...
Niemann J T - - 1992
BACKGROUND: Early countershock of ventricular fibrillation has been shown to improve immediate and long-term outcome of cardiac arrest. However, a number of investigations in the laboratory and in the clinical population indicate that immediate countershock of prolonged ventricular fibrillation most commonly is followed by asystole or a nonperfusing spontaneous cardiac ...
Egeland G M - - 1992
We investigated the cardiotoxic effects of 1,1,2-Trichloro-1,2,2- Trifluoroethane (fluorocarbon 113 or FC113) exposures among healthy workers cleaning rocket and ground support equipment for the National Aeronautic and Space Administration (NASA) programs. Exposure and ambulatory electrocardiographic (ECG) monitoring data were evaluated on 16 workers, each of whom was examined on exposed ...
Barron B A - - 1992
Dog hearts divided into right and left atria, right and left ventricles and intraventricular septum were homogenized in acid for extraction. Total opioids, and specific peptides (methionine-enkephalin, methionine-enkephalin-arg6-gly7-leu8) were determined by radioreceptor and radioimmunoassay, respectively. Catecholamines were quantitated amperometrically following HPLC. The effects of anesthetic agents (pentobarbital, alpha-chloralose), hemorrhage and ...
Knilans T K - - 1992
Antiarrhythmic drugs may be used as primary therapy to prevent recurrent cardiac arrest or as adjunctive treatment in patients given an implantable cardioverter defibrillator. In the latter instance, drugs are given to suppress nonlethal arrhythmias that are capable of initiating defibrillator discharge or to slow and/or decrease the number of ...
Hirschl R B - - 1992
Of the 102 neonates with respiratory failure supported with extracorporeal membrane oxygenation (ECMO) at this institution between 1984 and 1987, 8 patients developed severe myocardial dysfunction that was noted shortly after onset of bypass. The neonates in the cardiac dysfunction group were more hypoxic (average PaO2 = 26 +/- 8 ...
Nakamura Y - - 1991
The proportions of Kawasaki disease patients with cardiac sequelae in Japan were analyzed using nationwide survey data from the 6 1/2-year period July 1982 through December 1988. Of 46,864 cases of Kawasaki disease reported in the surveys, 7637 or 16.3% had cardiac sequelae such as dilation or stenosis of coronary ...
Coetzee A - - 1991
To determine whether halothane has protective effects on the ischemic heart, the influence of various concentrations (0.5%-1.5%) of halothane on metabolic and functional recovery during reperfusion after 60-min hypothermic (20 degrees C) and 40-min normothermic cardioplegic arrest was determined in the isolated rat heart. Halothane was administered either before and ...
Cipolotti G - - 1991
Cardiac arrest usually carries a bleak prognosis when occurring in patients who have undergone open heart surgery. We report two cases where cardiac arrest was not responsive to routine therapies. Doses of epinephrine 5-10 times higher than recommended were able to provide a resolution, and the patients were discharged in ...
Lawrence M E - - 1991
We retrospectively reviewed 443 patients who had cardiopulmonary resuscitation (CPR). The focus of the study was to discover what preexisting factors should be assessed to determine the probability of survival. There were 88 successes out of 340 cases (25.9%). The absence of a previous myocardial infarction (MI), shock, partial pressure ...
Kothari S S - - 1991
Electromechanical dissociation (EMD) may be primary, due to disease of the heart muscle itself, or secondary to alterations in loading conditions of the heart. Factors such as internal hemorrhage, acute cardiac tamponade, tension pneumothorax, acute pulmonary embolism, and inflow or outflow obstructions of the heart may be responsible for changes ...
Capone R J - - 1991
Patients randomized to placebo in the encainide and flecainide arms of the Cardiac Arrhythmia Suppression Trial (CAST) have been found to have a relatively low 1-year mortality rate of 3.9% in comparison with previous studies of patients in the postmyocardial infarction period. To determine the comparability of CAST with previous ...
Federiuk C S - - 1991
STUDY OBJECTIVES: This study attempted to determine the effect of bicarbonate administration on resuscitation in a porcine model of prolonged cardiac arrest. DESIGN: After instrumentation, 26 swine were subjected to ventricular fibrillation for 15 minutes (16 animals) or 20 minutes (ten animals) with no resuscitative efforts. INTERVENTIONS: Resuscitation attempts with ...
Noffsinger A E - - 1991
Complications of cardiopulmonary resuscitation (CPR), such as rib fractures and pneumothorax, are not uncommon. The authors report the case of a 69-year-old woman who underwent surgery for a perforated duodenal ulcer. Eighteen hours postoperatively she sustained a cardiac arrest; vigorous resuscitation efforts, using advanced cardiac life-support procedures, failed. At autopsy, ...
Tillinghast S J - - 1991
Emergency medical services with advanced life support systems were implemented in the Minneapolis-St. Paul, Minnesota, area in the mid-1970s. To assess the impact of emergency medical services on coronary heart disease mortality, the authors reviewed ambulance records and hospital emergency room logs for possible out-of-hospital cardiac arrest cases in the ...
Tenaglia A N - - 1991
Cardiopulmonary resuscitation (CPR) is often considered a contraindication to thrombolytic therapy for acute myocardial infarction. Of 708 patients involved in the first 3 Thrombolysis and Angioplasty in Myocardial Infarction trials of lytic therapy for acute infarction, 59 patients required less than 10 minutes of CPR before receiving lytic therapy (CPR ...
Capparelli E V - - 1991
STUDY OBJECTIVE: To determine the effect of cardiac arrest with CPR on diltiazem concentrations in dogs. DESIGN: Prospective, double-blind, randomized trial. SETTING: Laboratory at a large university-affiliated medical center. TYPE OF PARTICIPANTS: Twenty mongrel dogs. INTERVENTIONS: Following administration of anesthesia, catheters were placed in the pulmonary artery, aortic arch, left ...
Abroug F - - 1991
Cardiac dysfunction with pulmonary edema following scorpion envenomation (SE) has been documented only in a few isolated case reports. We conducted a systematic hemodynamic study in five consecutive patients (mean age, 21.6 +/- 8 years) presenting with pulmonary edema occurring a few hours (9.6 +/- 5.2 hours) after SE. All ...
Lichtenstein S V - - 1991
Although hypothermic cardioplegic arrest prolongs the period of ischemic arrest by reducing oxygen demands, it leaves the heart dependent solely on anaerobic metabolism for its energy demands and exposes it to the detrimental effects of hypothermia. Consequently, myocardial protection is compromised, and safe aortic occlusion time is limited to 120 ...
Anstadt M P - - 1991
Cardiopulmonary bypass (CPB) using nonpulsatile flow (NPF) is advocated for refractory cardiac arrest. This study examined cerebral outcome after resuscitation with pulsatile flow (PF) versus NPF. Dogs arrested for 12.5 minute were reperfused with NPF (n = 11) using roller pump CPB or PF (n = 11) using mechanical biventricular ...
Keenan R L - - 1991
STUDY OBJECTIVE: To determine whether the anesthetic cardiac arrest rate decreased following the introduction of enhanced respiratory monitoring and increased safety awareness during the past decade. DESIGN: Epidemiologic study of surgical anesthetic morbidity as represented by intraoperative cardiac arrests. SETTING: Operating room suite of a large university hospital. PATIENTS: 241,934 ...
Gazmuri R J - - 1991
After cardiac arrest, return of cardiac function and effective circulation are contingent on prompt restoration of myocardial blood flow. Because conventional closed-chest CPR has limited hemodynamic efficiency, we investigated venoarterial ECC utilizing peripheral vascular access as an alternative for cardiac resuscitation. Ventricular fibrillation was induced in domestic pigs by alternating ...
< 16 17 18 19 20 21 22 23 24 25 26 >