Abstract:
:Electrocardiogram changes and pharmacologic responses were studied in 28 cases of brain death. Cardiac activity in this condition is possibly determined by the dynamic balance between the depressant action of hypothermia and the stimulating action of the sympathetic nervous system (without any vagal or central influence). The electrocardiographic alterations are the results of this dual influence, and are probably characteristic of this condition. In the initial stage of brain death the ECG shows J waves in the terminal part of the QRS, prolongation of the QT interval and the ST-T changes; in the advanced stages, progressive showing of the heart rate and the depolarization and repolarization processes are observed (manifested by gradual accentuation of the findings mentioned above); in the terminal stage dynamic electrocardiographic changes (among them, progressive depression of sinus activity, atrial fibrillation, atrioventricular and intraventricular conduction disturbances and severe ST-T changes) appear. It is possible that additional factors, like metabolic changes and possible myocardial damage in some instances, may have some influence on the electrocardiographic pattern. Final conclusions cannot be drawn from these preliminary observations. The atropine test was found to be an efficient and simple diagnostic aid in cases of brain death.
journal_name
Chestjournal_title
Chestauthors
Drory Y,Ouaknine G,Kosary IZ,Kellermann JJdoi
10.1378/chest.67.4.425subject
Has Abstractpub_date
1975-04-01 00:00:00pages
425-32issue
4eissn
0012-3692issn
1931-3543pii
S0012-3692(16)52432-5journal_volume
67pub_type
杂志文章相关文献
CHEST文献大全abstract:BACKGROUND:Heparin-induced thrombocytopenia (HIT) is an antibody-mediated adverse drug reaction that can lead to devastating thromboembolic complications, including pulmonary embolism, ischemic limb necrosis necessitating limb amputation, acute myocardial infarction, and stroke. METHODS:The methods of this guideline f...
journal_title:Chest
pub_type: 杂志文章,实务指引,评审
doi:10.1378/chest.11-2303
更新日期:2012-02-01 00:00:00
abstract:STUDY OBJECTIVES:Poor dental hygiene has been linked to respiratory pathogen colonization in residents of long-term care facilities. We sought to investigate the association between dental plaque (DP) colonization and lower respiratory tract infection in hospitalized institutionalized elders using molecular genotyping....
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.126.5.1575
更新日期:2004-11-01 00:00:00
abstract:STUDY OBJECTIVES:The etiologic role of bacterial pathogens isolated from sputum culture in 40 to 50% of acute exacerbations of chronic bronchitis (AECB) is controversial. If bacterial pathogens cause these AECB, they should be associated with greater neutrophilic airway inflammation than pathogen-negative exacerbations...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.118.6.1557
更新日期:2000-12-01 00:00:00
abstract::Pulmonary specimens obtained from ten normal subjects and 53 patients with various pulmonary diseases were studied with energy-dispersive x-ray analysis. The amount of silicon in the pulmonary tissue was determined and expressed as a silicon/sulfur (Si/S) ratio. This Si/S ratio was below 0.2 in the ten normal subjects...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.85.4.506
更新日期:1984-04-01 00:00:00
abstract::Pulmonary encroachment by a large chronic pericardial effusion is reported in a woman with pericardiocentesis whom we recently treated. A restrictive pulmonary impairment is documented with pulmonary function data obtained before and after drainage of the effusion and the patient's dyspnea improved. ...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.93.2.434
更新日期:1988-02-01 00:00:00
abstract::Forty-eight children with known asthma (ranging in age from 2 to 16 years) were studied during an acute attack. Each received either terbutaline or epinephrine subcutaneously in a random double-blind fashion. Measurement of heart rate, respiratory rate, and systemic arterial systolic and diastolic blood pressures and ...
journal_title:Chest
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1378/chest.72.5.614
更新日期:1977-11-01 00:00:00
abstract::Right-sided chest lead ECGs (V3R to V6R) were recorded in 110 normal male subjects who were between the ages of 17 and 22 years old (mean, 17.9 years). The prevalence of the rS pattern decreased from V3R (89 percent) to V6R (37 percent). However, the opposite was the case for the rSr pattern (10 percent in V3R and 36 ...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.97.3.572
更新日期:1990-03-01 00:00:00
abstract::We present a case of adult acute epiglottitis that was successfully managed by endotracheal intubation without the need for subsequent tracheostomy. ...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.71.1.93
更新日期:1977-01-01 00:00:00
abstract:BACKGROUND:There is a growing understanding of the prevalence and impact of psychological disorders on COPD. However, the role of these disorders in early readmission is unclear. METHODS:We analyzed data from 5% fee-for-service Medicare beneficiaries diagnosed with COPD (International Classification of Diseases, Ninth...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.15-0449
更新日期:2016-04-01 00:00:00
abstract:BACKGROUND:Pulmonary hypertension, which is related to right ventricular (RV) failure, indicates a poor prognosis in heart failure (HF). Increased ventilatory response and exercise oscillatory ventilation (EOV) also have a negative impact. We hypothesized that the severity classification of HF and risk prediction could...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.14-2065
更新日期:2015-07-01 00:00:00
abstract::In the case reported, a patient with severe right ventricular failure following coronary revascularization was successfully weaned from cardiopulmonary bypass following creation of an atrial septal defect. This technique facilitated rapid decompression of the failing right ventricle by shunting blood to the more compl...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.92.5.950
更新日期:1987-11-01 00:00:00
abstract::A renewed interest in the clinical and pathogenic aspects of COPD exacerbation is timely in view of national and global COPD initiatives. The three big problems regarding COPD continue to be the following: prevention of the disease; slowing progression of the disease once diagnosis has been established; and prevention...
journal_title:Chest
pub_type: 杂志文章,评审
doi:10.1378/chest.117.5_suppl_2.376s
更新日期:2000-05-01 00:00:00
abstract:BACKGROUND:Many critically ill patients who die will do so after a decision has been made to withhold/withdraw life-sustaining therapy. The objective of this study was to document the characteristics of ICU patients with a decision to withhold/withdraw life-sustaining treatment, including the types of supportive treatm...
journal_title:Chest
pub_type: 杂志文章,多中心研究
doi:10.1016/j.chest.2017.04.176
更新日期:2017-08-01 00:00:00
abstract::At the cardiac sympathetic nerve terminal the alpha 2-adrenoceptor is presynaptic and appears to be located at an extrasynaptic site. This is suggested by (1) absence of evidence of autoinhibitory feedback at physiologic stimulus levels up to about 50 percent of the maximum chronotropic response in the isolated guinea...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.83.2_supplement.345
更新日期:1983-02-01 00:00:00
abstract:STUDY OBJECTIVES:To evaluate the cost-effectiveness of inhaled fluticasone propionate (FP) in children aged 12 to 47 months with asthma symptoms. DESIGN:A retrospective economic analysis conducted from the perspective of the Danish health-care system, based on clinical data from a 12-week study. SETTING:Thirty-three ...
journal_title:Chest
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1378/chest.120.6.1835
更新日期:2001-12-01 00:00:00
abstract:OBJECTIVE:The purpose of this study is to determine the accuracy of the cuff-leak test in a cardiovascular ICU. METHODS:Five hundred twenty-four patients were tested immediately before being extubated 531 times. The cuff-leak test was performed with the ventilator set in assist-control mode at a tidal volume (VT) of 1...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.116.4.1029
更新日期:1999-10-01 00:00:00
abstract::Exacerbations of sarcoidosis are common. In particular, exacerbations of pulmonary sarcoidosis are reported in more than one-third of patients. Despite their frequent occurrence, there is little medical evidence concerning the definition, diagnosis, and treatment of pulmonary exacerbations of sarcoidosis. In this arti...
journal_title:Chest
pub_type: 杂志文章,评审
doi:10.1378/chest.12-1060
更新日期:2012-10-01 00:00:00
abstract::We investigated the utility of a noninvasive respiratory inductive plethysmograph (RIP) to continuously monitor and record the breathing pattern of 44 patients who had been mechanically ventilated. Seven patients deteriorated on intermittent mandatory ventilatory rate of zero; seven deteriorated within 48 h following ...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.94.2.254
更新日期:1988-08-01 00:00:00
abstract::We describe a ten-month-old patient in whom intermittent patency and closure of the dectus arteriosus was observed clinically, and in whom this observation was uniquely demonstrated at the time of cardiac catheterization. The hemodynamics of this patient and the physiology of ductal closure are discussed. ...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.68.1.110
更新日期:1975-07-01 00:00:00
abstract::This article discusses the management of venous thromboembolism (VTE) and thrombophilia, as well as the use of antithrombotic agents, during pregnancy and is part of the American College of Chest Physicians Evidence-Based Clinical Practice Guidelines (8th Edition). Grade 1 recommendations are strong and indicate that ...
journal_title:Chest
pub_type: 杂志文章,实务指引
doi:10.1378/chest.08-0761
更新日期:2008-06-01 00:00:00
abstract::Severe head injury often results in hypoxemia, but the pathophysiology of this phenomenon is unclear. We studied 24 patients hospitalized after severe head injury to determine whether the abnormality of oxygen transfer as measured by venous admixture (Qs/Qt) was associated with a reduction in functional residual capac...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.84.1.29
更新日期:1983-07-01 00:00:00
abstract::This report describes a 46-year-old white man who suffered an acute myocardial infarction after carbon monoxide exposure. The electrocardiogram and serum enzymes showed myocardial infarction. The coronary angiogram performed one week after admission failed to reveal evidence of coronary obstructive lesions. The case p...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.97.2.491
更新日期:1990-02-01 00:00:00
abstract:STUDY OBJECTIVE:To determine the effect of a symptom-based and a peak flow-based action plan in preventing acute exacerbations in subjects with poorly controlled asthma. DESIGN:A randomized controlled trial in which subjects who had required urgent treatment for their asthma were allocated to receive no action plan, a...
journal_title:Chest
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1378/chest.112.6.1534
更新日期:1997-12-01 00:00:00
abstract::We report a case of Behçet's disease with pulmonary and splenic involvement. The radiologic presentation was quite different from the modes defined in the literature. A large, anteriorly located, well circumscribed ovoid mass was the x-ray film image of a large area of infarction with hemorrhage. The involved pulmonar...
journal_title:Chest
pub_type: 杂志文章,评审
doi:10.1378/chest.104.5.1635
更新日期:1993-11-01 00:00:00
abstract::The hemodynamic effects of enoximone and nicardipine were compared during the early postcardiac surgery period in 40 patients with systemic hypertension and moderate cardiac dysfunction. Patients were prospectively randomized into two groups. Mean right atrial pressure was maintained above 7 mm Hg. The drug infusion r...
journal_title:Chest
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1378/chest.106.1.52
更新日期:1994-07-01 00:00:00
abstract::Workers exposed to a variety of wood dusts have been shown to exhibit occupational asthma, lung function deficits, and elevated levels of respiratory symptoms. Despite the popularity of pine and spruce, the health effects of exposures to these woods have not been extensively investigated. A study was undertaken to inv...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.108.3.642
更新日期:1995-09-01 00:00:00
abstract:BACKGROUND:CPAP effectiveness is limited by suboptimal adherence. Prior studies of adherence have focused on middle-aged men. RESEARCH QUESTION:Does CPAP adherence vary by age and sex? STUDY DESIGN AND METHODS:Telemonitoring data from a CPAP manufacturer database were used to assess adherence in patients initiating C...
journal_title:Chest
pub_type: 杂志文章
doi:10.1016/j.chest.2020.07.017
更新日期:2021-01-01 00:00:00
abstract::A 48-year-old man with unipolar depression and a psychosexual problem concerning his body image was injecting his scrotum repeatedly with olive oil to increase the size of his genitals. He developed respiratory failure following accidental intravenous injection of olive oil and was found to have lipogranulomatous lesi...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.107.3.875
更新日期:1995-03-01 00:00:00
abstract::We report a case of pleural dissemination of invasive thymoma, which was successfully treated with intrathoracic chemothermotherapy following panpleuropneumonectomy. Intrathoracic chemothermotherapy in combination with surgery may be a hopeful adjuvant treatment to control pleural disseminated lesions of invasive thym...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.105.6.1884
更新日期:1994-06-01 00:00:00
abstract::To assess airway and lung parenchymal damage non-invasively in cystic fibrosis (CF), chest MRI has been historically out of the scope of routine clinical imaging due to technical difficulties such as the low proton density and respiratory and cardiac motion. However, technological breakthroughs have recently emerged t...
journal_title:Chest
pub_type: 杂志文章,评审
doi:10.1016/j.chest.2020.12.008
更新日期:2020-12-17 00:00:00