PubMed Health⌕ Search

Biomedical subjects

L Hennequin

Publications and source records attributed to L Hennequin.

10 recordsLinked to original sources
PubMed1996

[Prognostic factors of Pneumocystis carinii pneumonia in AIDS].

OBJECTIVES: Identify prognosis factors in Pneumocystis carinii pneumonia at diagnosis and construct a model to predict mortality according to these prognosis factors. METHODS: Seventy-seven consecutive cases of proven AIDS-related Pneumocystis carinii pneumonia (67 men, 10 women, mean age 37.2 years) were reviewed to determine the most accurate initial prognostic factors and estimate an individual prediction of death. A stepwise logistic regression analysis was performed. Three kinds of data were entered into the logistic model: historical data, clinical and laboratory data obtained within the first 24 hours of diagnosis, and specific data related to chest X-ray and bronchoalveolar lavage results. RESULTS: The sum of arterial partial pressure of oxygen and carbon dioxide (PaO2 + PaCO2) and serum albumin level best predicted a fatal outcome in multivariate analysis. CONCLUSION: The logistic equation provided by the model might be used to accurately and quickly identify the patients with severe Pneumocystis carinii pneumonia who might benefit from supportive intensive care.

AIDS-Related Opportunistic Infections↗
PubMed1994

[Techniques and complications of interventional radiology in vascular diseases of transplanted kidneys].

The authors present a general review on the various techniques of interventional radiology in the treatment of vascular complications of renal transplants. Arterial stenosis require generally percutaneous transluminal angioplasty; arterial stenting is justified in cases of multiple restenosis and occluding dissection. Arterial thrombosis is treated by fibrinolysis or clot aspiration. Treatment of venous complications, such as stenosis or thrombosis, require analogous methods. Arterio-venous fistula and arterial aneurysms due to renal biopsy can be obliterated by dissection with a guide wire, or dropping of metallic coils, or electrical embolization. The authors emphasize the technical aspects, the difficulties and the complications of these procedures. The most frequent complication is the spasm of the renal transplant artery, which may lead to thrombosis. Arterial wall rupture and dissections are very rare. Hematoma at the puncture site of the arterial access are frequent; they may lead to false aneurysm, which can be treated also by noninvasive methods of interventional radiology.

Angioplasty, Balloon↗
PubMed1993

[Absence of mitral valve prolapse during panic attacks induced by sodium lactate].

The recent identification of a new type of anxiety state, panic attack, has drawn attention to common pathways between panic disorder and cardiac somatization, particularly mitral valve collapse. A double-blind study was set up, using doppler-echocardiography during a panic attack induced by sodium lactate infusion. The results showed that there was no relationship between panic attack and mitral valve collapse, and that the lactate infusion-anxiety rate was only 35 percent.

Adolescent↗
PubMed1992

[Viral pneumopathies after heart transplantation. Radioclinical analysis].

From a retrospective study of 80 cases of heart transplantation, the contribution of chest X-rays to the diagnosis of viral pneumonia was studied. Among 66 episodes of pneumonia, a viral cause was proved in 16 cases (CMV: 9, Herpes: 7), with 13 cases during the first 4 months. CMV pneumonia was revealed in 3 cases by a diffuse pulmonary infiltrate with a rapidity fatal outcome and in 6 cases by focal infiltrates that disappeared within 1 and 7 weeks. Herpes pneumonia was immediately revealed, in 5 cases, by a diffuse infiltrate. In 11 out of 16 cases, the viral pneumonia improved but its course was complicated by the development of another pneumonia.

Cytomegalovirus Infections↗
PubMed1992

[Imaging of cervical and thoracic chordoma. Apropos of 2 cases].

Chordoma is a rare tumor in spine. Two cases, exceptional in adolescents, are reported. The clinical evolution is slow and progressive. CT shows a lobulated tumor, precises the degree of vertebral osteolysis and detects intra-tumoral calcifications. MRI is useful to determine especially in high in soft tissues and the vertebral canal. Arteriography is realised in pre-operative time and permits an embolization when the tumor is hypervascularised.

Adolescent↗
PubMed1990

Improved subtraction technique in intravenous digital left ventriculography: comparison with radionuclide studies.

Adequate processing of left ventricular angiograms depends on the visualisation of all segments of the ventricular wall. At the same time, subtraction of different images can enhance different heart segments but commercially available methods do not allow simultaneous viewing of several images masked by different processes. Using our software, for each studied frame, a four quadrant display permits the simultaneous visualisation of a mask mode image, a diastolic-systolic difference image, an image obtained by subtraction of a frame at the same cycle time and a composite mask subtracted image. The composite mask image is obtained by weighting three images according to videodensitometric measurements by reference to previously acquired data. This method facilitates contour delineation and computation of the ejection fraction by area-length method. Correlation with radionuclide estimates of left ventricular ejection fraction is higher (n = 60, r = 0.90, SEE = 8%) than using the classical mask mode display (n = 60, r = 0.82, SEE = 11%). In a subgroup of 30 patients the contrast medium was injected in an antecubital vein and the correlation coefficient remained satisfactory (n = 30, r = 0.89, SEE = 7%) when compared with the classical subtraction technique (n = 30, r = 0.70, SEE = 12%). We therefore conclude that the composite mask method gives comparatively similar values for left ventricular ejection fraction to those acquired by radionuclide angiography.

Angiography, Digital Subtraction↗
PubMed1989

[Value of digital subtraction of left ventriculographies by the venous route. Comparison with balanced scintigraphy of the heart cavities].

The development of numerisation material in radiology currently permits to perform usual cardiovascular tests. The authors report a series of 48 patients who benefited from the determination by numerised left ventriculography, of their stroke volume (SV). In 37 cases, the peripheral venous route is used while in 11 cases the central venous route is used, in the pulmonary artery trunk. The SV values obtained with both methods (one advocated by the manufacture and another one developed by the authors), are correlated with the SV values obtained with the isotopic method, used as reference. The correlations are satisfactory, approximately 0.79 for all patients of the study, and markedly improve when the injection of the contrast material is performed in the pulmonary artery (approximately 0.95). The authors conclude that determination of the left ventricle SV by numerisation is an interesting technique in centers where there is no department of nuclear medicine, and is absolutely necessary to complement right catheterisation.

Female↗