Vol 59, No 10 (2003)
Other
Published online: 2005-12-12
Echocardiographic monitoring of left ventricular regional motion during hyperventilation and intravenous infusion of trometamol (tris) for detection of variant angina
DOI: 10.33963/v.kp.82251
Kardiol Pol 2003;59(10):306-309.
Abstract
Background: In spite of constant progress and development of new diagnostic tests, the detection of variant angina, which occurs in approximately 30% of patients with ischaemic heart disease (IHD), remains challenging.
Aim: To assess the sensitivity and specificity of echocardiographically monitored transient abnormalities of regional wall motion of left ventricle (LV) during hyperventilation after intravenous infusion of trometamol (TRIS-buffer) for the detection of coronary artery spasm.
Methods: The study group consisted of 72 patients (14 women and 58 men, aged from 32 to 69 years) with IHD. A control group was composed of 20 healthy men. Patients with IHD were divided into two groups. Group I consisted of 46 patients with Prinzmetal's angina whereas group II was composed of 26 patients with exertional angina and a history of myocardial infarction. Two-dimensional echocardiographic monitoring of LV contractility was carried out during hyperventilation after an intravenous infusion of 100 ml of trometamol.
Results: Transient abnormalities of regional LV wall motion during infusion of trometamol and hyperventilation occurred in 91% of patients from group I and in 8% of patients from group II (p<0.00001). Electrocardiographic ST-segment changes during hyperventilation-trometamol test were observed in 63% of patients from group I and in 23% of patients from group II (p<0.0001). No transient regional dyssynergy of LV nor ST-segment changes during hyperventilation-trometamol test in the control group were observed. The sensitivity and specificity of regional LV wall motion during hyperventilationtrometamol test in the identification of patients with variant angina were 91% and 92%, respectively, and the sensitivity and specificity of ST-segment changes - 63% and 76%, respectively.
Conclusions: Echocardiographic monitoring of regional LV wall motion during hyperventilation after intravenous infusion of trometamol is a sensitive and specific test for detection of variant angina.
Aim: To assess the sensitivity and specificity of echocardiographically monitored transient abnormalities of regional wall motion of left ventricle (LV) during hyperventilation after intravenous infusion of trometamol (TRIS-buffer) for the detection of coronary artery spasm.
Methods: The study group consisted of 72 patients (14 women and 58 men, aged from 32 to 69 years) with IHD. A control group was composed of 20 healthy men. Patients with IHD were divided into two groups. Group I consisted of 46 patients with Prinzmetal's angina whereas group II was composed of 26 patients with exertional angina and a history of myocardial infarction. Two-dimensional echocardiographic monitoring of LV contractility was carried out during hyperventilation after an intravenous infusion of 100 ml of trometamol.
Results: Transient abnormalities of regional LV wall motion during infusion of trometamol and hyperventilation occurred in 91% of patients from group I and in 8% of patients from group II (p<0.00001). Electrocardiographic ST-segment changes during hyperventilation-trometamol test were observed in 63% of patients from group I and in 23% of patients from group II (p<0.0001). No transient regional dyssynergy of LV nor ST-segment changes during hyperventilation-trometamol test in the control group were observed. The sensitivity and specificity of regional LV wall motion during hyperventilationtrometamol test in the identification of patients with variant angina were 91% and 92%, respectively, and the sensitivity and specificity of ST-segment changes - 63% and 76%, respectively.
Conclusions: Echocardiographic monitoring of regional LV wall motion during hyperventilation after intravenous infusion of trometamol is a sensitive and specific test for detection of variant angina.
Keywords: echocardiography - variant angina - hyperventilation - trometamol (tris)
