["Population and xenograft" investigation. Preliminary results].

The chronic shortage of human organs is the argument for xenotransplantation. In emergencies, acceptability is closely linked to the benefit. Little information is available on attitudes towards xenotransplantation.

[Which graft for which patient? and when? III. Organization schema of organ procurement and graft coordination].

Organ and tissue procurement strongly increased during the past decades to become a common activity among accredited hospitals. Structuring efficient regional organ procurement organisations appear as an important goal in order to offer the relevant number and quality of transplants to the patients on the national waiting list maintained by the Etablissement français des Greffes. Two structures acting together coordinate organ and tissue procurement: (i)accredited hospitals allocate some medical and non medical personal interfacing; (ii) the Etablissement français des Greffes through one of its seven regional units or its national unit.

Pathological findings in 165 patients explored for malignant hyperthermia susceptibility.

The pathological findings in 165 patients explored for malignant hyperthermia (MH) susceptibility are reported. The first group of 120 subjects were patients investigated for MH. These patients had suffered an attack of MH under anaesthetic or were members of families in which a subject had died of MH.

[Ambulatory anesthesia in the elderly].

The aim of ambulatory anaesthesia in elderly is to reduce consequences of an interruption of their life habits. Medical and social selection criteria must be rigorous in order to obtain a great benefit comparing with short hospitalization. No previous significant study has been yet published to precise the place of this technique and its benefits for these patients.

[Organization pf the consultation for ambulatory anesthesia in university hospitals].

The recent increase in endoscopic and radiological exploratory techniques, with the possibility of taking therapeutical action, has led to the multiplication of interventions outside the operating theatre in University Hospitals. This increase in ambulatory activity has been managed at the DAR by setting up a centralized consultation using the existing accommodation, staff and secretarial facilities. This approach has enabled us to rigourously select all patients using these facilities and to monitor their management over the last three years.

[Analysis of parameters used for the evaluation of the Relative Complexity Index beta].

The Relative Complexity Index beta (RCI beta) has been devised as an indicator of the relative complexity and cost of anaesthesia. It takes into account the type of anaesthesia, the duration, the type of surgery and the patients' ASA status. This study analyses the relative weight of each component of RCI by a multiple regression analysis.

[The "high concentration" oxygen mask: a dangerous defect].

Three cases of unidirectional valve inversion in airtight oxygen masks are reported. These defects were discovered before use on a patient. One of the masks was tested on a healthy volunteer.

[Surgery of Conn's syndrome. Apropos of 16 cases].

Operation for tumors responsible for a Conn's syndrome was performed in 16 patients, 11 women and 5 men, over a period of 13 years, the average time before diagnosis being 5 1/2 years. All patients presented hypertension, permanent in 14 and paroxysmal in 2 cases while blood potassium levels were below 3 mmol/l in all patients. Diagnosis was confirmed by elevation of plasma aldosterone and of urine tetrahydroaldosterone, associated with low plasma renin activity not responding to a stimulus.

[Comparative effect of halothane and isoflurane on peroperative cardiac arrhythmias].

Cardiac arrhythmias were studied in twenty ASA class 1 patients under general anesthesia using halothane or isoflurane to supplement nitrous oxide in oxygen. The study began during the maintenance period, once the expiratory MAC value had reached a stable level of 1, and stopped one hour later. Both intubation and recovery periods were excluded.

[Differentiated thyroid cancers. Thyroid recurrence after limited surgery].

Twenty-eight patients with differentiated thyroid cancer presented with local relapse 6 months to 24 years (mean: 7 years) after limited surgery. The tumour was clinically undetectable in 7 cases. Among 22 patients reoperated upon, one died post-operatively, 17.

[Our experience with autotransplantation and cryopreservation of parathyroid tissue in thyro-parathyroid surgery].

Results are reported of four and a half years of experience with autotransplantation and cryopreservation of parathyroid tissue in thyro-parathyroid surgery. One hundred patients with hyperparathyroidism secondary to renal insufficiency were treated by total parathyroidectomy and partial autotransplantation, immediate in 98 cases and secondarily using their frozen stored tissue in the other two cases. Results were compared with those in 13 other patients treated during the same period by subtotal parathyroidectomy.