Clinical Study

Pretest Score for Predicting Microbubble Contrast Agent Use in Stress Echocardiography: A Method to Increase Efficiency in the Echo Laboratory

Table 1

Clinical characteristics of the studied population of patients.

Characteristic V a l u e ( 𝑁 = 1 5 , 2 5 3 )

Age, 𝑦 6 4 . 4 ± 1 3 . 4
Male sex8,251 ( 5 4 )
Body mass index 2 8 . 5 ± 6 . 1
Dobutamine stress echocardiography6,522 ( 4 3 )
Resting ejection fraction, % 5 9 ± 8
Smoking (current or past)7,862 ( 5 2 )
Major risk factors ( > 2, smoking excluded)4,282 ( 2 8 )
Diabetes2,811 ( 1 8 )
Family history of CAD5,853 ( 3 8 )
Hypertension9,022 ( 5 9 )
Dyslipidemia9,655 ( 6 3 )
Known CAD (e.g., angina, MI, revascularization)3,372 ( 2 2 )
Prior CABG1,455 ( 1 0 )
Prior PCI1,754 ( 1 1 )
Prior MI1,809 ( 1 2 )
Abnormal ECG7,663 ( 5 0 )
Left bundle branch block406 ( 3 )
Pathologic Q waves1,333 ( 9 )
Resting ST-T wave abnormalities7,257 ( 4 8 )
Left ventricular hypertrophy581 ( 4 )
𝛽 -Blocker use6,030 ( 4 0 )
Calcium channel blocker use2,665 ( 1 7 )
Contrast agent use3,713 ( 2 4 )

CABG, coronary artery bypass graft; CAD, coronary artery disease; ECG, electrocardiogram; MI, myocardial infarction; PCI, percutaneous coronary intervention. C a t e g o r i c a l data are expressed as number of patients and percentage of sample; continuous data are expressed as mean ± SD.