Quantitation of Precordial Movement

Quantitation of Precordial Movement

Precordial displacement records of 39 patients with mitral regurgitation have been analyzed using a new method of quantitation. Three groups of patients were studied, and the data from each group have been compared in a number of different ways to those obtained from a control group. The optimal method of discrimination is a graphic representation involving the two variables of the height of th...

Precordial Movement over the Right Ventricle in Children with Pulmonary Stenosis.

Relationship between quantitated precordial movement and left ventricular function.

The relationship between external records of precordial movement and ventricular function has been studied in 61 patients with various cardiac disorders by comparing the records of the apical impulse to the left ventricular volume. A significant correlation between external recordings and the volume data was found in patients with normal or increased ventricular volumes: Patients with a normal ...

T-vector direction differentiates postpacing from ischemic T-wave inversion in precordial leads.

BACKGROUND Postpacing precordial T-wave inversion (TWI), known as cardiac memory (CM), mimics ischemic precordial TWI, and there are no established ECG criteria that adequately distinguish between the two. On the basis of CM properties (postpacing sinus rhythm T vector approaching the direction of the paced QRS vector), we hypothesized that CM induced by right ventricular pacing would manifest ...

Analytical evaluation of two automatic methods to measure blood CK-MB mass and troponin I

The lack of standardization of methods to measure cardiac markers for coronaria ischaemia, particularly troponin, led us to perform an analytical evaluation of two new immunoassays to quantify CK-MB mass and troponin I using the Dimension RxL automatic analyser. The reliability and analytical intervals of the methods were studied as well as reference values (0.010- 0.228 microg l(-1) for tropon...