Left ventricular outflow tract and mid-cavity obstruction may cause false-positive dobutamine stress echocardiograms

Left ventricular (LV) outflow tract obstruction (LVOTO) occurs in up to 20% of patients undergoing dobutamine stress echocardiography (DSE). Mid-cavity LV obstruction occurs less commonly during DSE. LV regional wall motion abnormalities during DSE may occur despite normal coronaries due to hyperten...

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Veröffentlicht in:	European heart journal cardiovascular imaging 2011-03, Vol.12 (3), p.E14-E14
Hauptverfasser:	Jhawar, Manish B, Balla, Sudarshan, Alpert, Martin A, Chockalingam, Anand
Format:	Artikel
Sprache:	eng
Schlagworte:	Adult Blood Pressure Determination Chest Pain - diagnosis Chest Pain - etiology Coronary Angiography - methods Coronary Stenosis - diagnostic imaging Coronary Stenosis - drug therapy Diagnosis, Differential Echocardiography, Stress - methods Electrocardiography - methods False Positive Reactions Female Humans Middle Aged Sampling Studies Severity of Illness Index Ventricular Outflow Obstruction - diagnostic imaging Ventricular Outflow Obstruction - physiopathology
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Beschreibung
Zusammenfassung:	Left ventricular (LV) outflow tract obstruction (LVOTO) occurs in up to 20% of patients undergoing dobutamine stress echocardiography (DSE). Mid-cavity LV obstruction occurs less commonly during DSE. LV regional wall motion abnormalities during DSE may occur despite normal coronaries due to hypertensive blood pressure response and takotsubo stress cardiomyopathy. We describe herein two cases of LVOTO and one case of mid-cavity LV obstruction during DSE associated with transient apical hypokinesis.
ISSN:	2047-2404 1532-2114 2047-2412
DOI:	10.1093/ejechocard/jeq158