Abstract:
:Microbubble formation has been accepted as the mechanism producing contrast echoes. Comparisons of the contrast effects of various agents have been studied extensively, but the importance of gas-mixing has been less appreciated. To test the hypothesis that good gas-mixing, by facilitating microbubble formation, would enhance contrast effect, this study compared the contrast echocardiograms of ten adult patients before and after mixing carbon dioxide with various contrast agents. Contrast agents tested included a 5 percent glucose in water, vitamin B complex, vitamin C, and Cardiogreen solutions. First, we recorded echocardiograms by injecting each diluted contrast solution alone, then repeated the examinations using 10 ml of each diluted solution with 1 ml of carbon dioxide (CO2), mixed by means of a four-way stopcock. Satisfactory or excellent results were obtained in seven of ten, ten of ten, ten of ten, and ten of ten tests, respectively, after thorough gas-mixing, vs one of ten, seven of ten, eight of ten, and six of ten, respectively, before gas-mixing. We conclude that the addition of sufficient amounts of gas, followed by thorough mixing, is of great importance in contrast echocardiography. Consistently good results can be achieved with vitamin C, vitamin B or Cardiogreen solutions by this simple and safe method.
journal_name
Chestjournal_title
Chestauthors
Chiang CW,Lin FC,Fu M,Fang BR,Hsu TS,Lee YSdoi
10.1378/chest.89.5.723subject
Has Abstractpub_date
1986-05-01 00:00:00pages
723-6issue
5eissn
0012-3692issn
1931-3543pii
S0012-3692(16)61608-2journal_volume
89pub_type
杂志文章相关文献
CHEST文献大全abstract::Angiofollicular lymph node hyperplasia, known more commonly as Castleman disease, is a rare lymphoproliferative disorder. Castleman disease has two distinct clinical manifestations described as unicentric and multicentric disease. These presentations have distinct treatment algorithms and portend very different progno...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.09-2084
更新日期:2010-11-01 00:00:00
abstract::The purpose of this study was to identify the strengths and limitations of using portable peak flowmeters to document suspected cases of occupational asthma that were reported to a statewide surveillance project. The New Jersey Department of Health conducts surveillance for occupational asthma as part of the federally...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.100.6.1515
更新日期:1991-12-01 00:00:00
abstract::Uterine life is arguably the most critical time in developmental programming, when environmental exposures may have the greatest potential to influence evolving fetal structure and function. There has been substantial progress in understanding the epigenetic mechanisms through which environmental exposures can permane...
journal_title:Chest
pub_type: 杂志文章,评审
doi:10.1378/chest.10-1800
更新日期:2011-03-01 00:00:00
abstract::Six young cocaine users, median age 35.5 years (range 27 to 44 years) experienced acute myocardial infarction. The close temporal correlation in two cases between cocaine use and clinical infarction and the relative paucity of atherosclerotic blockage of the coronary arteries in the others, as demonstrated by autopsy ...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.86.5.729
更新日期:1984-11-01 00:00:00
abstract::Since first described in 1984, nontraumatic pneumothoraces in patients with AIDS has become more common. When compared with spontaneous pneumothorax in the general population, pneumothoraces in patients with AIDS are often complicated by prolonged air leaks as well as higher recurrence rates. Chemical pleurodesis has ...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.105.3.823
更新日期:1994-03-01 00:00:00
abstract::This article describes the use of smart technology by investigators and patients to facilitate lung disease clinical trials and make them less costly and more efficient. By "smart technology" we include various electronic media, such as computer databases, the Internet, and mobile devices. We first describe the use of...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.15-1314
更新日期:2016-01-01 00:00:00
abstract::A 54-year-old Japanese man demonstrated a sultamicillin-induced hilar and mediastinal lymphadenopathy with hypersensitivity pneumonitis. A positive lymphocyte stimulation test for sultamicillin and a decreased CD4/CD8 ratio of lymphocytes in BAL fluid suggested that an alteration in cell-mediated mechanisms was respon...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.102.6.1907
更新日期:1992-12-01 00:00:00
abstract:STUDY OBJECTIVES:To determine the impact on survival and clinical correlates of pulmonary hypertension (PH) occurring in patients with idiopathic pulmonary fibrosis (IPF). DESIGN:Retrospective study. SETTING:Tertiary care, referral medical center. PATIENTS:Among 487 consecutive patients with IPF, we identified 136 p...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.128.4.2393
更新日期:2005-10-01 00:00:00
abstract::An unusual case of Staphylococcus aureus endocarditis confined to the mural left atrium is presented. Echocardiographic studies revealed a 1.5 x 2.0-cm vegetation mimicking a myxoma situated in the path of a mitral regurgitant jet on a color Doppler test. Emboli to upper and lower extremities and brain complicated the...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.99.3.757
更新日期:1991-03-01 00:00:00
abstract:OBJECTIVE:To evaluate the accuracy of a flow-proportional delivery system and the pattern of inspiratory nitric oxide (NO) concentration during different flow conditions. DESIGN:Laboratory study in a lung model. SETTING:University experimental laboratory. SUBJECT:With a new delivery system, NO was administered propo...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.112.2.496
更新日期:1997-08-01 00:00:00
abstract:OBJECTIVE:To determine the incidence, diagnostic features, and perioperative predictors of acute cholecystitis after cardiovascular surgery. DESIGN:Inception cohort study. SETTING:A tertiary care 54-bed cardiothoracic ICU. PATIENTS:All patients admitted to an ICU after cardiovascular surgery during a 42-month period...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.114.1.76
更新日期:1998-07-01 00:00:00
abstract::Poverty is a major social problem in the United States and throughout much of the world. Poverty and the broader term socioeconomic status (SES) are important determinants of overall health status and many pulmonary diseases. The purpose of this study was to review the medical literature from the past 20 years address...
journal_title:Chest
pub_type: 杂志文章,评审
doi:10.1378/chest.07-1405
更新日期:2007-11-01 00:00:00
abstract:BACKGROUND:Periodic leg movements (PLMs) may appear during nasal CPAP titration, persisting despite the elimination of hypopneas. METHODS:Systematic recordings of expiratory abdominal muscles on the right and left sides with surface electromyographic (EMG) electrodes lateral to navel, and close from the lateral side o...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.11-1563
更新日期:2012-07-01 00:00:00
abstract::Eighteen postmenopausal women were examined by Doppler echocardiography before initiation of HRT (T1), then after ten weeks (T2) and one year (T3). This study group was compared with another in which HRT was not used. Flow velocity integral, which correlates with SV, and MA, an indicator of cardiac contractility, were...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.102.5.1496
更新日期:1992-11-01 00:00:00
abstract::Despite major advances in our understanding of the pathophysiologic processes leading to pulmonary arterial hypertension and recent developments in therapeutic approaches, the long-term prognosis for patients with pulmonary arterial hypertension remains unsatisfactory. Early detection and adequate clinical classificat...
journal_title:Chest
pub_type: 杂志文章,评审
doi:10.1378/chest.128.6_suppl.622S-a
更新日期:2005-12-01 00:00:00
abstract:STUDY OBJECTIVES:The management of stable patients with COPD depends on the severity of symptoms and airflow limitation. Regarding inflammation, corticosteroids are the only medications that are recommended for use, and only under restricted circumstances. Corticosteroids tend to undertreat or overtreat patients with C...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.126.2.375
更新日期:2004-08-01 00:00:00
abstract:BACKGROUND:Altitude exposure is associated with mild pulmonary hypertension and decreased exercise capacity. We tested the hypothesis that pulmonary vascular resistance (PVR) contributes to decreased exercise capacity in hypoxic healthy subjects. METHODS:An incremental cycle ergometer cardiopulmonary exercise test and...
journal_title:Chest
pub_type: 杂志文章,随机对照试验
doi:10.1378/chest.08-2222
更新日期:2009-05-01 00:00:00
abstract::To clarify how lung function at exercise is affected in sarcoidosis, and to analyze how exercise studies compare to testing measurements, 63 patients with pulmonary sarcoidosis were examined with lung mechanics and arterial blood gases during exercise. These findings were compared with simultaneously obtained, but pre...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.99.3.572
更新日期:1991-03-01 00:00:00
abstract::The findings in a 22-year-old man with Ebstein's anomaly of the tricuspid valve, Wolff-Parkinson-White syndrome, and a persistent left superior vena cava are reported. This is the first reported case of this combination of anomalies in which the atrial septum was intact and the left superior vena cava communicated wit...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.79.6.700
更新日期:1981-06-01 00:00:00
abstract::A 41-year-old woman with end-stage mitral and aortic stenosis developed the cycle of low cardiac output, peripheral vasoconstriction, increased core temperature, and cardiac decompensation. This was interrupted by core cooling utilizing iced gastric lavage. We propose that her severe hyperthermia was caused or abetted...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.72.1.107
更新日期:1977-07-01 00:00:00
abstract::The first report of coincident IHSS and ostium secundum ASD is corroborated and successful septal myotomy and myectomy with patch closure of the ASD is described. ...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.68.2.246
更新日期:1975-08-01 00:00:00
abstract::Eradication of the bacterial pathogen, resolution of the local and systemic inflammatory signs, and recovery of organ function are the main criteria by which antibiotic treatment is evaluated. In cystic fibrosis (CF) the pathogen is seldom eradicated and systemic markers of inflammation are not always present. The mai...
journal_title:Chest
pub_type: 临床试验,杂志文章
doi:
更新日期:1988-08-01 00:00:00
abstract:STUDY OBJECTIVE:To evaluate the relationship between obstructive sleep apnea (OSA) and ventilatory responsiveness to carbon dioxide in both men and women. DESIGN:An analysis of 219 patients referred to an university-based sleep center between 1989 to 1994 was conducted (104 with OSA and 115 without OSA; 43 women and 1...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.117.2.454
更新日期:2000-02-01 00:00:00
abstract:BACKGROUND:Prolonged mechanical ventilation (MV) is associated with high morbidity, mortality, and cost. However, few and limited data are available on the prediction of duration of MV. We conducted an observational cohort study to seek predictive criteria. METHODS:The study was performed in a surgical ICU (SICU) in a...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.112.3.745
更新日期:1997-09-01 00:00:00
abstract:STUDY OBJECTIVE:Our objective was to compare respiratory muscle performance, pulmonary mechanics, and gas exchange between the BiPAP S/T-D ventilation system (Respironics Inc; Murrysville, PA) and the Servo Ventilator 900C (Siemens-Elma AB; Sweden) with similar inspiratory and expiratory airway pressure in patients who...
journal_title:Chest
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1378/chest.114.5.1390
更新日期:1998-11-01 00:00:00
abstract::Each of 100 chest radiographs selected randomly from a hospital population were read by five experienced radiologists. The films were rich in abnormal findings. Disagreement analysis was performed considering the entire content of the interpretation. The disagreements were graded by a panel as to type (false negative,...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.68.3.278
更新日期:1975-09-01 00:00:00
abstract::A 20-year-old woman developed severe shortness of breath 4 h after a cesarean section. Chest roentgenogram showed a pleural effusion and tension pneumothorax; insertion of a chest tube drained liquid stool. At surgery she was found to have a left diaphragmatic defect with herniation, strangulation, and perforation of ...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.103.3.950
更新日期:1993-03-01 00:00:00
abstract:BACKGROUND:Participant retention is a major challenge in clinical research, especially in studies with multiple, longitudinal research assessments. Despite the importance of retention methods, there is little empirical research on how cohort retention efforts are perceived by study participants. RESEARCH QUESTION:To e...
journal_title:Chest
pub_type: 杂志文章
doi:10.1016/j.chest.2020.02.050
更新日期:2020-08-01 00:00:00
abstract::Residual volume (RV) was obtained by subtracting vital capacity from total lung capacity determined by the single breath helium dilution (TLCsb) to measure CO diffusing capacity in 2,680 subjects (8 to 64 years old) of a general population sample. There were 712 normal subjects (243 male and 469 female subjects) selec...
journal_title:Chest
pub_type: 杂志文章
doi:10.1378/chest.102.4.1209
更新日期:1992-10-01 00:00:00
abstract::Pulmonary hypertension is a common finding in patients with idiopathic pulmonary fibrosis (IPF), and is associated with increased morbidity and mortality. Therapy with sildenafil has been shown to decrease pulmonary vascular resistance in patients with pulmonary fibrosis and may improve functional status. Patients wit...
journal_title:Chest
pub_type: 杂志文章,随机对照试验
doi:10.1378/chest.06-2101
更新日期:2007-03-01 00:00:00