Prognostic Impact of Hemodynamic Response to Adenosine in Patients Older Than Age 55 Years Undergoing Vasodilator Stress Myocardial Perfusion Study
作者:
Aiden,
Abidov Rory,
Hachamovitch Sean,
Hayes Chee,
Ng Ishac,
Cohen John,
Friedman Guido,
Germano Daniel,
期刊:
Circulation
(OVID Available online 2003)
卷期:
Volume 107,
issue 23
页码: 2894-2899
ISSN:0009-7322
年代: 2003
出版商: OVID
关键词: adenosine;hemodynamics;prognosis;perfusion;imaging
数据来源: OVID
摘要:
BackgroundThe prognostic importance of various hemodynamic responses to adenosine infusion in patients undergoing adenosine stress myocardial perfusion stress (MPS) has not been defined.Methods and ResultsWe identified 3444 unique patients (53.5% women, mean age 74.0±8.4 years) who underwent adenosine (with no additional exercise) stress myocardial perfusion single photon emission computed tomography (MPS) and were followed up for 2.0±0.8 years. Multivariable Cox proportional hazards analysis was used to assess the prognostic value of hemodynamic variables in predicting cardiac death (CD). Two hundred twenty‐four CDs (6.5%) occurred during follow‐up. By multivariable analysis, higher rest heart rate (HR) and to a lesser extent lower peak HR were markers of CD. When added to the multivariable model in place of peak and rest HR, the peak/rest HR ratio was an independent predictor of CD. Peak/rest HR ratio additionally risk‐stratified patients within each MPS category. A significant interaction was found between gender and peak systolic blood pressure (SBP), in which there was an increased risk associated with a low peak SBP (<90 mmHg at end of adenosine infusion) in men but not in women.ConclusionsPatients undergoing adenosine stress MPS with high rest HR and low peak/rest HR ratio have increased risk of CD, as do male patients with a low peak SBP. Assessment of the hemodynamic response to adenosine adds incremental prognostic value to MPS results and enhances identification of patients at risk for CD. (Circulation.2003; 107:2894‐2899.)
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