Left ventricular hypertrophy screening using a hand-held ultrasound device
AIMS: To test the diagnostic potential of a hand-held ultrasound device for screening for left ventricular hypertrophy in a hypertensive population using a standard echocardiographic system as a reference. METHODS: One hundred consecutive hypertensive patients were enrolled. An experienced investigator performed measurements of the thickness of the anterior septum and posterior wall using the parasternal 2D-long axis view and the end-diastolic dimension of the left ventricle with both imaging devices. Left ventricular hypertrophy was defined as an increase in left ventricular mass > or = 134 g x m(-2) for men and > or = 110 g x m(-2) for women, when indexed for body surface area and > or = 143 g x m(-1) for men and > or = 102 g x m(-1) for women, when indexed for height. RESULTS: Sixty-five men and 35 women were studied (age 60 +/- 11 years); mean duration of hypertension: 13 +/- 11 years; mean blood pressures: systolic 150 +/- 20 mmHg and diastolic 89 +/- 11 mmHg. The anterior septum and posterior wall were visualized in all patients with both imaging devices. The standard echocardiographic system identified left ventricular hypertrophy by body surface area in 18 (18%) patients and by height in 26 (26%) patients. The agreement between the standard echocardiographic system and the hand-held device for the assessment of left ventricular hypertrophy was 93%, kappa: 0.77 (left ventricular mass/body surface area) and 90%, kappa: 0.76 (left ventricular mass/height). CONCLUSIONS: We conclude that hand-held devices can be effectively applied for screening for left ventricular hypertrophy in hypertensive patients.
|Keywords||Aged, Blood Pressure/physiology, Comparative Study, Diastole/physiology, Echocardiography/methods, Electrocardiography, Equipment Design, Female, Heart Rate/physiology, Heart Ventricles/ultrasonography, Humans, Hypertrophy, Left Ventricular/*diagnosis/epidemiology, Male, Middle aged, Observer Variation, Sensitivity and Specificity, Systole/physiology, Ultrasonography/instrumentation/*utilization|
Vourvouri, E.C., Poldermans, D., Schinkel, A.F., Koroleva, L.Y., Sozzi, F., Parharidis, G.E., … Roelandt, J.R.T.C.. (2002). Left ventricular hypertrophy screening using a hand-held ultrasound device. European Heart Journal. Retrieved from http://hdl.handle.net/1765/9975