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Biomedical subjects

H Aube

Publications and source records attributed to H Aube.

7 recordsLinked to original sources
PubMed1994

Plasma lipid peroxidation in critically ill patients: importance of mechanical ventilation.

Oxygen free radicals may be implicated in the pathogenesis of both ischemia-reperfusion damage and in circulatory shock. The attack on the cell membrane by free radicals leads to lipid peroxidation, which can be assessed by the plasma malondialdehyde (MDA) level. The aim of this study was to determine the importance of lipid peroxidation in critically ill patients. The MDA level was measured by the thiobarbituric acid test. Nineteen patients at an early stage of circulatory shock, 11 patients in the weaning period of ventilation, 9 gastro-enterological patients without cardio-circulatory distress or sepsis, and 9 healthy volunteers were studied. The MDA level was higher in critically ill patients than in control subjects (61% in patients with shock and 40% in patients on mechanical ventilation). No correlation was found between the MDA level and the outcome: multiple organ failure or acute respiratory distress syndrome. This proposal leads to the question of systematic antioxidant therapy in intensive care patients.

Adolescent↗
PubMed1992

Risk factors for septic shock in the early management of bacteremia.

PURPOSE: Aggressive treatment of bacteremia in patients at high risk of septic shock may prove to be beneficial and cost-effective since these patients account for 50% of the mortality. The purpose of this study was to identify risk factors for septic shock in bacteremic patients. PATIENTS AND METHODS: We retrospectively collected clinical, biologic, and radiologic data from medical records of patients who experienced one episode of bacteremia between March 1 and December 31, 1990, at the University Hospital of Dijon, France. Statistical analysis was univariate and multivariate (logistic regression). RESULTS: During the survey, 331 patients experienced one episode of bacteremia. Bacteremia due to gram-negative species was more frequently found in surgical units. Septic shocks were equally attributed to gram-negative and gram-positive bacteria. The do-not-resuscitate order was associated with nearly half of the deaths secondary to underlying diseases or poor general condition. Neither hospital-acquired bacteremia nor underlying diseases were associated with a high risk of septic shock. Multivariate analysis showed the following to be risk factors for septic shock: male gender and age older than 75 years (odds ratio = 2.91), creatinine level greater than 20 mg/L (odds ratio = 4.52), prothrombin time less than 60% (odds ratio = 4.86), and presence of an interstitial pattern on the chest radiograph involving more than half of both lung fields (odds ratio = 4.1). Our logistic model with these selected parameters allowed an overall classification of 77% of the studied patients, with a positive predictive value of 55% and a negative predictive value of 89%. CONCLUSION: Our results provide a positive predictive value that is similar to that of the clinical scores of severity proposed by other authors in selected populations. Our classification, in conjunction with a clinical classification, would allow improvement in the prognosis of patients with bacteremia by early treatment of those at high risk for developing septic shock. Validation of these results with further studies involving a larger population that includes patients with suspected infections, as well as bacteremic patients, is needed.

Adolescent↗
PubMed1991

[Spontaneous intracerebral hemorrhages in young patients. Study of 33 cases].

We report 33 cases of intracerebral hemorrhage (ICH) in patients aged from to 9/44 years (male: 20, female: 13, mean age: 32.5 years). ICH was due to vascular malformations in 39 p. 100 of cases, to arterial hypertension in 30% and to various causes in 18% no cause could be found in 13% of the cases. ICH was lobar in 64%, deep in 33% and infratentorial in 3% of the cases. The diagnosis was assessed by arteriography in 9 patients. The vascular malformations were arterial angiomas, saccular aneurysms and cavernous angiomas. Death rate was 24%. There was a fast ICH handicap in 40% of cases. Only 36% of the patients were not disabled.

Cerebral Hemorrhage↗