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Biomedical subjects

E Rives

Publications and source records attributed to E Rives.

7 recordsLinked to original sources

[Comparison of propanidid with propofol for dental surgery of short or medium duration].

The properties of propofol in emulsion given by continuous intravenous infusion to spontaneously breathing patients have been well studied. Thirty randomized voluntary premedicated patients undergoing dental extraction were anaesthetized with propofol (2.5 mg X kg-1 IVD, and 9 mg X kg-1 X h-1) or with propanidid (9 mg X kg-1 IVD, and 60 mg X kg-1 X h-1), supplemented with nitrous oxide in oxygen and fentanyl. Induction, maintenance and recovery times had the same characteristics. Highly significant differences occurred between the two groups regarding the increase in heart rate, apnoea and recovery time. This study showed that propofol was an eminently suitable agent for continuous intravenous anaesthesia in spontaneously breathing patients for dental surgery.

Adolescent↗

[Influence of caudal anesthesia on the secretion of catecholamines in children].

Eighty-two children, class ASA I, between four months and 14 years of age, all undergoing elective subumbilical surgery, were randomly assigned to two groups: a control "halothane anesthesia" group (n = 35) and a 0.25% bupivacaine "caudal anaesthesia" group (n = 47). In the control group, there was a significant peroperative increase in heart rate, respiratory rate, systolic blood pressure and plasma adrenaline levels (p less than 0.05). There was no significant difference in the noradrenaline levels. In the "caudal anaesthesia" group, the haemodynamic response was less pronounced, this being concomitant with a decrease in adrenaline and noradrenaline levels (p less than 0.05 and p less than 0.001, respectively). During surgery, there were significant differences between the groups in heart rate, respiratory rate, noradrenaline levels (3 +/- 0,30 nmol X l-1 vs 1.68 +/- 0.18 nmol X l-1; p less than 0.001) and adrenaline levels (1.67 +/- 0,28 nmol X l-1 vs 0.78 +/- 0.08 nmol X l-1; p less than 0.01). It is concluded that the catecholamine response in children undergoing minor abdominal surgery has been blocked by caudal anaesthesia.

Adolescent↗

[Human immunodeficiency virus (HIV), thrombopenia and pregnancy].

Three cases of thrombocytopenia in pregnant women are described. Two of these patients had an AIDS-like illness and the third one had AIDS. This HIV-associated change occurred in 8% of the complications of a consecutive series of 38 pregnant women who were positive for the HIV antibody test in the course of one year. A link with HIV was established after eliminating idiopathic pregnancy thrombocytopenic purpura and after eliminating every other viral cause for the thrombocytopenia. The normal myelogram speaks in favour of a peripheral origin for the platelet destruction. Treatment consisted in administering immunoglobulins intravenously in a continuous transfusion in doses of 0.04 g/kg per day. The method was effective in two cases. Three cesareans were carried out. In two cases the recovery was uncomplicated and in the third case the haemorrhagic syndrome developed immediately after delivery. This patient died 35 days after delivery. Fetal scalp blood or fetal cord blood could not be taken in any of these three cases. The newborn did not have thrombocytopenia at birth, but they did have anti-IVF antibodies and one of them developed and AIDS-like syndrome. The time interval has not been long enough to assess the further development in the two other cases. The survivors are being followed up with a threefold assessment of the blood picture, the immunological state and the virology. This is being done on the two surviving mothers and the three infants.

Acquired Immunodeficiency Syndrome↗

[Practical approach to complex acid-base disorders using a slide rule].

Diagnosis of mixed acid-base disturbances is often difficult. Nowadays it depends on biochemical and statistical interpretation, coupled with clinical data. The acid-base slide-rule is a useful tool to carry out this five step procedure, which it simplifies, giving rapidly at the patient's bed-side an objective support for the diagnosis of acid-base disturbances.

Acid-Base Imbalance↗