Increasing region of interest width reduces neonatal circumferential strain.

Objective: There is growing interest in speckle tracking echocardiography-derived strain as a measure of left ventricular function in neonates. However, knowledge gaps remain regarding the effect of image acquisition and processing parameters on circumferential strain measurements. The aim of this study was to evaluate the effect of using different region of interest (ROI) widths on speckle tracking derived circumferential strain in healthy neonates.

Primary repair of Fallot's tetralogy in an older adult: a 20-year follow-up.

A patient with tetralogy of Fallot who presented at 58 years of age is described. Following surgical intracardiac repair he had 20 years of improved functional capacity. Though such surgery is now usually performed in infancy, the literature indicates that surgical correction of tetralogy of Fallot in appropriate adults is associated with low mortality and good long-term results.

PTCA in elderly patients: hospital events.

Background: Medical treatment of the elderly is changing to include the aggressive management of coronary artery disease with percutaneous transluminal coronary angioplasty.

Objective: The purpose of this study was to review major hospital events of patients aged 70 years or more, who underwent a first percutaneous transluminal coronary angioplasty.

Methods: A retrospective medical record review was done of 246 consecutive patients of 70 years or more, from January 1985 to December 1988, at a tertiary care community hospital.

[Tibial dyschondroplasia in broiler chickens].

After the general description of tibial dyschondroplasia (TD) an account is given on observations of the incidence of this leg abnormality in the Danish broiler production. Comparative investigations concerning the frequency of TD in three commercial strains of broiler chickens (A, B & C) is described. The possible effect of the diet, with reference to frequency--particularly calcium and phosphorus levels--is studied.

Clinically unrecognized ventricular dysfunction in young diabetic patients.

Left ventricular function at rest and during supine bicycle exercise was assessed by gated radionuclide angiography in 20 diabetic patients and 18 normal control subjects without clinical evidence of heart disease. The diabetic patients were aged 21 to 44 years and all except one used insulin. No subject developed chest pain or electrocardiographic changes during exercise.