Abstract:
BACKGROUND:Adenosine cardiac stress is widely used as an alternative to exercise testing during myocardial perfusion imaging (MPI). Dyspnea often accompanies the adenosine stress test. Although known asthmatic patients are excluded from this test because of the danger of bronchospasm, there is incomplete information regarding the role of factors such as chronic obstructive pulmonary disease (COPD) and tobacco smoking in adenosine-induced dyspnea. PATIENTS AND METHODS:A total of 122 consecutive patients (75 male, 47 female; mean age 59 years, SD 10 years) undergoing pharmacologic stress testing with an intravenous infusion of adenosine also had volume-flow spirometry (Vitalograph Compact, Vitalograph Ltd) before, during, and after the test. The indices assessed were forced expiratory volume in one second, its ratio to the forced vital capacity, and peak expiratory flow rate. RESULTS:Mild to severe symptoms were experienced by 81% of patients during adenosine infusion. More than half the patients had dyspnea, but there was no associated bronchospasm. Although the patients with COPD showed parameters indicative of bronchial resistance compared with those without this problem, there was no further deterioration after adenosine infusion. Similarly, patients with a history of tobacco abuse, despite showing a tendency toward increasing airways resistance, had no bronchospasm during the administration of adenosine. CONCLUSIONS:(1) Although dyspnea is a common problem during adenosine stress MPI, it is not associated with any appreciable bronchospasm. (2) COPD and tobacco abuse do not appear to be contraindications to adenosine stress MPI studies. However, it is probably safe to exclude patients with severe COPD from adenosine stress MPI until after further evaluation with larger numbers of patients.
journal_name
Am Heart Jjournal_title
American heart journalauthors
Balan KK,Critchley Mdoi
10.1067/mhj.2001.116070subject
Has Abstractpub_date
2001-07-01 00:00:00pages
142-5issue
1eissn
0002-8703issn
1097-6744pii
S0002-8703(01)09534-5journal_volume
142pub_type
杂志文章abstract::Twelve cirrhotic patients with portal hypertension and esophageal varices were treated with nadolol for 1 month, and the effects on renal and hepatic hemodynamics and function were studied. A significant decrease in cardiac output, portohepatic gradient, and effective hepatic blood flow was found, whereas mean arteria...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(84)90602-1
更新日期:1984-10-01 00:00:00
abstract:BACKGROUND:Despite significant attention to resuscitation care by hospitals, national data on trends in the incidence and survival of patients with inhospital cardiac arrest (IHCA) are limited. OBJECTIVE:To determine trends and hospital-level variation in the incidence and outcomes associated with IHCA. In exploratory...
journal_title:American heart journal
pub_type: 杂志文章,多中心研究
doi:10.1016/j.ahj.2017.05.018
更新日期:2017-11-01 00:00:00
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journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/s0002-8703(96)90425-1
更新日期:1996-08-01 00:00:00
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pub_type: 杂志文章
doi:10.1016/0002-8703(85)90588-5
更新日期:1985-02-01 00:00:00
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journal_title:American heart journal
pub_type: 杂志文章,多中心研究
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更新日期:2017-10-01 00:00:00
abstract:BACKGROUND:Perflenapent injectable emulsion is a newer echocardiographic contrast agent that provides chamber opacification and improved endocardial border delineation. In >1000 patients tested, adverse effects have been minimal. However, previous studies have included few patients with congestive heart failure (CHF) o...
journal_title:American heart journal
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1067/mhj.2000.106612
更新日期:2000-06-01 00:00:00
abstract::Thirty-four patients with acute myocardial infarction (mean age 55 years) who received intracoronary streptokinase for coronary thrombosis were followed for a mean of 9.4 months (longest 25 months) following the procedure of percutaneous transluminal coronary recanalization (PTCR). Twelve patients had undergone corona...
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pub_type: 杂志文章
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更新日期:1982-10-01 00:00:00
abstract:BACKGROUND:Although quantification of the impact of treatment on survival remains the cornerstone of clinical research, the assessment of a broader range of disease outcomes is growing increasingly important. This manuscript provides an overview of the considerations made regarding quantification of a range of clinical...
journal_title:American heart journal
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1067/mhj.2002.120775
更新日期:2002-04-01 00:00:00
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journal_title:American heart journal
pub_type: 杂志文章,多中心研究
doi:10.1016/j.ahj.2004.09.032
更新日期:2005-08-01 00:00:00
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journal_title:American heart journal
pub_type: 杂志文章
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更新日期:2016-08-01 00:00:00
abstract:BACKGROUND:Sirolimus-eluting stents (SES) prevent restenosis and repeat percutaneous coronary intervention (PCI), but safety data in unselected patients are limited, especially for intermediate-term follow-up. METHODS:All patients undergoing SES implantation at 4 Italian centers were enrolled into a dedicated database...
journal_title:American heart journal
pub_type: 杂志文章,多中心研究
doi:10.1016/j.ahj.2008.06.030
更新日期:2008-11-01 00:00:00
abstract:BACKGROUND:Surgical ventricular restoration (SVR) is an operation that demonstrates promise to improve outcomes for patients with left ventricular dysfunction. Current use and operative outcomes of SVR have come from centers of expertise, and operative risks of SVR in community practice are unknown. We sought to charac...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/j.ahj.2006.01.016
更新日期:2006-09-01 00:00:00
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journal_title:American heart journal
pub_type: 杂志文章,评审
doi:10.1016/j.ahj.2010.06.015
更新日期:2010-10-01 00:00:00
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pub_type: 杂志文章
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更新日期:2002-03-01 00:00:00
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journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/j.ahj.2005.03.055
更新日期:2006-02-01 00:00:00
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journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/s0002-8703(98)70331-x
更新日期:1998-03-01 00:00:00
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journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/s0002-8703(77)80407-9
更新日期:1977-04-01 00:00:00
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journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(83)90116-3
更新日期:1983-07-01 00:00:00
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pub_type: 杂志文章
doi:10.1067/mhj.2001.116478
更新日期:2001-10-01 00:00:00
abstract:BACKGROUND:Some pharmacist-managed anticoagulation services (PMAS) provide initial follow-up to patients on oral anticoagulant, who are transferred to their physician once they are stabilized. This may be as effective as and less expensive than long-term PMAS follow-up. METHODS:Once PMAS patients were stabilized and r...
journal_title:American heart journal
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.ahj.2008.02.009
更新日期:2008-07-01 00:00:00
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pub_type: 杂志文章
doi:10.1067/mhj.2002.125835
更新日期:2002-11-01 00:00:00
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journal_title:American heart journal
pub_type: 杂志文章
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更新日期:1983-08-01 00:00:00
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journal_title:American heart journal
pub_type: 杂志文章
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更新日期:1984-02-01 00:00:00
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pub_type: 杂志文章
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更新日期:2019-03-01 00:00:00
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pub_type: 杂志文章
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更新日期:2003-08-01 00:00:00
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journal_title:American heart journal
pub_type: 杂志文章,多中心研究,随机对照试验
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更新日期:2015-11-01 00:00:00
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journal_title:American heart journal
pub_type: 杂志文章,多中心研究,随机对照试验
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更新日期:2013-09-01 00:00:00
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journal_title:American heart journal
pub_type: 杂志文章,多中心研究
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更新日期:2019-07-01 00:00:00
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journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(93)90053-c
更新日期:1993-01-01 00:00:00
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journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/j.ahj.2012.10.016
更新日期:2013-03-01 00:00:00