Continuous-wave Doppler echocardiography was used to estimate pulmonary artery pressures by measuring pulmonary regurgitant flow velocity in 21 patients with pulmonary hypertension (mean pulmonary artery pressure 20 mm Hg) and 24 patients without pulmonary hypertension. The pulmonary regurgitant flow velocity patterns, characterized by a rapid rise in flow velocity immediately after closure of ...

Continuous-wave Doppler echocardiography was used to estimate pulmonary artery pressures by measuring pulmonary regurgitant flow velocity in 21 patients with pulmonary hypertension (mean pulmonary artery pressure 20 mm Hg) and 24 patients without pulmonary hypertension. The pulmonary regurgitant flow velocity patterns, characterized by a rapid rise in flow velocity immediately after closure of ...

In recent years, murine models have become the primary avenue for studying the molecular mechanisms of cardiac dysfunction resulting from changes in gene expression. Transgenic and gene targeting methods can be used to generate mice with altered cardiac size and function, and as a result, in vivo techniques are needed to evaluate their cardiac phenotype. Transthoracic echocardiography, pulse wa...

Dual Doppler echocardiography is a recently developed technique performed using an instrument with two separate sample gates, allowing simultaneous recording of signals from two locations. We describe the use of dual Doppler echo­ cardiography to assess fetal cardiac rhythm. Fetal arrhythmias are common and encountered in 1 to 2% pregnancies. They often resolve spontaneously and do not require ...

Echocardiography is one of the grandest techniques of this century. It does no harm to the patient, it can be repeated many times, it is relatively inexpensive, and the amount of information that we can derive from it is extraordinarily useful to the everyday practice of cardiology. Practical Echocardiography and Doppler is a handsome, clearly written text with good illustrations; however, ther...

The aim of this review is to synthesize the published evidence regarding the benefits of identifying mechanical asynchrony before implantation of biventricular devices, and the role of echocardiography in the identification and quantification of mechanical asynchrony. It summarizes the published studies addressing the several echocardiographic parameters of dyssynchrony that have already proven...

AIM Transient cardiac hypertrophy occurs in infants of diabetic mothers. The effect of this state on cardiac functions was investigated with a case-control study using tissue Doppler technique. MATERIAL AND METHODS In this study, right and left ventricle systolic and diastolic functions of 45 term babies of diabetic mothers and 50 healthy term newborns were examined using tissue Doppler echoc...

Continuous-wave Doppler echocardiography was used to estimate pulmonary artery pressures by measuring pulmonary regurgitant flow velocity in 21 patients with pulmonary hypertension (mean pulmonary artery pressure 20 mm Hg) and 24 patients without pulmonary hypertension. The pulmonary regurgitant flow velocity patterns, characterized by a rapid rise in flow velocity immediately after closure of ...

Echocardiography is the most commonly used diagnostic method for assessing left ventricular (LV) function in clinical cardiology. However, echocardiographic measurements are subjective, semiquantitative, and relatively insensitive when detecting subtle abnormalities in contractility. Furthermore, early detection of either global or regional LV dysfunction may be crucial to patient care by influ...