نتایج جستجو برای: precordial leads
تعداد نتایج: 243734 فیلتر نتایج به سال:
Comparison of flow rates measured from precordial dilution curves, simultaneous direct arterial dilution curves, and nearly simultaneous Fick determinations in 29 patients failed to indicate any difference in precision. Successive precordial determinations of flow rate were adequately reproducible. It is concluded that the precordial dilution method gives flow values comparable to those obtaine...
The recognition of ventricular hypertrophy is of paramount importance in the differential diagnosis of congenital anomalies of the cardiovascular system. In infancy the distinction between right and left ventricular hypertrophy may be impossible on clinical grounds, and the information contributed by radiological examination may be indecisive. In such circumstances considerable reliance is plac...
Most newer bedside monitors allow monitoring of 2 leads simultaneously but only allow monitoring of one precordial (V) lead at a time. Leads V1 or V6 can be obtained by using a 5-lead bedside monitoring cable with limb electrodes placed as shown in Figure 1: • Arm electrodes should be placed on the shoulders as close as possible to where the arms join the torso. Although the arm electrodes tiat...
A LTHOUGH HYPERTENSION is a common pathologic condition associated with negative U waves in the electrocardiogram, their clinical significance and relationship to arterial pressure have not been adequately established. Kemp et al.1 have described a correlation between negative U waves in left precordial leads and malignant hypertension with con-gestive heart failure. Reversal of the waves from ...
OBJECTIVE To describe patients with a distinct electrocardiogram (ECG) pattern without ST-segment elevation in the presence of an acute occlusion of the proximal left anterior descending (LAD) artery. DESIGN Single-centre observational study. PATIENTS Patients with acute anterior wall myocardial infarction who were referred for primary percutaneous coronary intervention (PCI) between 1998 a...
FOLLOWING Brock's' recognition that hypertrophied muscle in the left ventricular outflow tract could obstruct left ventricular outflow, much interest has centered on the nature of this hypertrophy. Initial reports suggested that concentric hypertrophy of the left ventricle was the underlying cause of the obstruction of the outflow tract. -3 Following Teare's4 description of asymmetrical hypertr...
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