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Biomedical subjects

R Chioin

Publications and source records attributed to R Chioin.

198 records · Page 11Linked to original sources
PubMedDate not supplied

Global and regional left ventricular function in heart transplant patients: an angiographic follow-up study.

We studied the global and regional left ventricular function, its determinants and its modification with time, in orthotopic heart transplant recipients. We reviewed the left ventricular cineangiography performed 1 (50 patients), 2 (33 patients), 3 (18 patients), and 4 (seven patients) years after operation. Regional wall motion was quantitatively evaluated by the area method. All patients had angiographically normal coronary arteries and no evidence of acute rejection at the time of the study. One year after heart transplantation, cardiac index and left ventricular ejection fraction were mildly but significantly lower than normal. Cardiac index was more than 2.5 L/min/m2 in all but one patient, and ejection fraction was more than 50% in all patients. Only previous acute cardiac rejection necessitating therapy and arterial hypertension showed some influence on the left ventricular function. Two years after operation, the left ventricular end-diastolic volume was increased, and left ventricular mass-volume ratio decreased compared with year 1. Three years after operation, an increase of left ventricular end-diastolic pressure and of left ventricular ejection fraction was also evident. Four years after operation, the heart rate was higher, compared with previous years. Even if the changes in the parameters of left ventricular function were significant, they were small in terms of absolute value. Regional hypokinesia was detected 1 year after heart transplantation in eight patients, involving one segment in six patients and two segments in two patients.(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗
PubMedDate not supplied

[Pulmonary throboembolism: radiological examination without contrast media. (Findings in 70 cases)].

The results are reported of radiologic investigations carried out without contrast medium in 70 selected patients with pulmonary thromboembolisms. The frequency of different signs is reported. Attention is stressed of the following data: 1) value of some semeiologic findings both hilar (hilar amputation, arterial dilation) and parenchimal (increased translucency, hypoperfusion), mainly compared with previous radiographic examinations; 2) frequency of atelectasis with its various findings; 3) significance of the evolution referred both to the infarction and the thromboembolic pattern.

Adult↗