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Biomedical subjects

R Clément

Publications and source records attributed to R Clément.

At least 37 records · Page 2Linked to original sources
PubMed1989

[The influence of anthropometric factors, hemorheologic parameters and the level of arterial pressure on pulse wave velocity].

UNLABELLED: The measurement of the pulse wave velocity (PWV) is widely used in clinical practice to assess the elasticity of the arterial system. It can be influenced by a number of factors. The present study was undertaken to assess the possible role of anthropometric factors, hemorheological parameters and blood pressure on this element. STUDY DESIGN: Sixty-three male subjects, mean age: 21 +/- 1.6 years,; height: 177 +/- 7 cm; weight: 76 +/- 13 kg, were subjected to Doppler measurement of the carotid-femoral PWV with synchronous recording of blood pressure. In parallel, the following were carried out: nycthemeral blood pressure recording, measurement of plasma vicosity and erythrocyte deformability, determination of hematocrit, fibrinogen and total proteins. The Quetelet indices and body surface area (BSA) were calculated for each patient. These data were analyzed by multiple linear regression. RESULTS: Three parameters affect PWV: 24-hours diastolic blood pressure, hematocrit, and body surface area (the coefficient of multiple correlation: r = 0.597, the percent variability of the explained variable is equal to 35.7%, the regression equation can be written: PWV CF (cm/sec) + 0.283*Diast/24 hours + 0.742* hematocrit + 9.486* BSA = 0.629). The following parameters are not involved: plasma viscosity, erythrometry, total proteins, fibrinogen, Quetelet index, systolic and diastolic blood pressure during the investigation, mean systolic pressure and mean heart rate over 24 hours. COMMENTS: The PWV-diastolic pressure relationship is well-known. In contrast, the effect of the hematocrit and body surface area has never been reported.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed1988

[Measurement of tumor volume by x-ray computed tomography in evaluating the response to treatment].

Oncologists often find it difficult to evaluate response to treatment of solid tumors. CT scan imaging has been used over about the last ten years for follow-up of treated patients, and for the last year has been applied to evaluate objectively the size of deep malignant tumors (32 cases studied). Based on results, difficulties related to the patients, the technician and the apparatus are discussed. The method appears to be 90% reliable and of marked value for follow-up surveillance and adjustment of therapy if required.

Evaluation Studies as Topic↗
PubMed1987

[Severe algodystrophy of the foot simulating ischemic arteriopathy. Spectacular cure by regional sympathetic block with guanethidine].

The authors report a case of severe algodystrophy of the foot complicating a typical episode of algodystrophy of the knee, and which resulted in appearances of acute ischaemia of the foot. Paraclinical investigations seemed to support this aetiology but arteriography excluded this diagnosis, showing only regular distal arterial narrowing. This case illustrates the extremely variable clinical and paraclinical features of algodystrophy and the possibility of significant hypofixation from the onset and during the course of algodystrophy in young patients. It shows that there are no specific, constant clinical signs or paraclinical changes. From the therapeutic point of view, it confirms the often spectacular effects of prolonged regional sympathetic nerve block with Guanethidine which may give an immediate and definitive cure of severe algodystrophy when all else has failed.

Adult↗
PubMed1986

[Digital microembolism disclosing intracardiac thrombosis].

The authors report the observation of a 46 year old man with a case history of myocardial infarction at the age of 26 years, transient ischemic injury at 41 years of age, and in whom a focalised digital ischemic syndrome of microembolic nature led to the discovery of an intracardial thrombosis which was operated upon and progressed without complication. Bloody microembolisms of cardiac origin may be selectively revealed by acrosyndromes, the diagnostic elements of which are mentioned. They are poorly understood conditions. Their significance must not be neglected because of the risk of recurrence in macroembolic form. The pathogenesis of these obstructions and their specific responsibility for ischemic cardiopathies is reviewed. It is appropriate to emphasise the novelty of this observation since, in the context of ischemic cardiopathies, no attention has been devoted to microembolisms, in contrast to the numerous publications relating to macroembolisms. The symptomatic treatment is unremarkable, the etiological treatment of intracardial thrombosis is discussed.

Adult↗
PubMed1982

[Medulloblastoma].

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Cerebellar Neoplasms↗
PubMed1977

[The results of radiotherapy managements in Hodgkin's disease (author's transl)].

We reported the results of radiotherapy managements in Hodgkin's disease about 185 patients. From this study, it seems to appear possible to confirm or to note some particular facts: the real good prognosis of the forms begining in the right sus-clavicular fossa; the special staging of the long time survival patients (II Aa, type II); the small value in survival of chemotherapy done before and/or after radiotherapy in the I and II stages; in the other side, the true amelioration comming from chemotherapy in the III and IV stages; the value of irradiation by expanded fields; the particular interest of the total mode irradiation done at the beginning or during the course of the illness; the optimal dose of larger than or equal to 4 000 rads with a weekly dose of larger than or equal to 1 000 rads; the good tolerance of the radiotherapy. From this prelimary study, we hope dowing well in further with a greater number of patients.

Adolescent↗