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Biomedical subjects

H Vignon

Publications and source records attributed to H Vignon.

11 recordsLinked to original sources
PubMed1979

[Bacterial flora of 241 patients in an intensive care service].

The investigators performed an epidaemiological study of 260 patients in intensive care and identified the causal organisms by the obtaining of various specimens: tracheobronchial, urinary, blood cultures and catheter samples. By means of these specimens, they attempted to effectuate counts for each patient and the compare each month the patients definitely infected with the infections presented by the new patients. This study attempts to demonstrate the frequency of infections of the same kind when the intensive care unit consists of a single ward without separation of the patients and where the hospital staff treat all the patients in the unit in turn.

Adolescent↗
PubMed1978

[Apropos of complications following the use of methylmethacrylate. Possible prevention by betamethasone].

The aim of this study was to determine whether the prior injection of betamethasone was capable of preventing blood pressure changes and the fall in arterial pO2 when following the fixation of total hip protheses with methyl metacrylate. It involved 54 patients in whom systolic, diastolic and mean blood pressure (BP), arterial pO2, pCO2 and heart rate were noted at different times: T1, 15 minutes after the beginning of the operation; T2 and T3, one minute and five minutes after application of the cement; T4, at the end of the operation. There was no significant difference between the various measurements at times T1, T2, and T3 as far as blood pressure and heart rate were concerned. By contrast, there was a fall in pO2 at times T2 and T2 in relation to times T1 and T4. This fall was significant (p is less than 0.01) but never theless remained moderate. The possible influence of betamethasone is discussed.

Adult↗
PubMed1978

[Malignant syndrome caused by neuroleptics (3 observations)].

This study concerns 3 cases of malignant syndrome due to neuroleptics. Our aim is to clarify the nature of this syndrome and to attempt to delimit it from malignant hyperthermia. The etiology suggests that its occurence should increase with the growing use of very active neuroleptics. It consists clinically of an extrapyramidal syndrome with hypertonicity, akinesia, tremor and with a neuro-vegetative syndrome of which the main sign is hyperthermia. On the basis of physiopathology it is attempted to explain, in the light of fresh data, the extrapyramidal signs, the hyperthermia and the rise in the OPK Etiological treatment has, however, proved disappointing.

Adult↗
PubMed1977

[Comparative study of nitrogen sparing during parenteral feeding as a function of carbohydrate intake].

The nitrogen balance of two groups of patients, A and B, was studied during the first four post-operative days. Groups A (31) received a daily intake of one liter of Totamine concentrée glucidique with glucose 10 p. 100 1,5 liter. Groups B received Totamine concentrée glucidique with glucose 30 p. 100 1,5 liter. There was no statistically significant difference in nitrogen balance between both groups. On the other hand, the cumulative nitrogen balance was positive for both groups for the first four post-operative days.

Adult↗
PubMed1977

[Changes in the affinity of oxygen for hemoglobin during general anesthesia].

The well known effects of the lowering of the intraerythrocyte 2, 3, diphosphoglycerate (2, 3, DPG) level and hypothermia, on the affinity of oxygen for hemoglobin, lead the authors to study the influence of these parameters on this affinity during general anesthesia. The following observations were made in 15 adult subjects, undergoing prolonged general anaesthesia (average time: 3 hrs. 10 minutes): the dissociation curve of oxyhemoglobin (DCO) by the method of mixing, the intraerythrocyte 2,3, DPG level, the hemoglobin concentration and arterial blood parameters (PO2, PCO2, pH). These measurements were recorded before and after the general anaesthesia. The results were the following: a significant reduction of P50, measured under standard conditions (from 27.64 +/- 1.74 torr to 25.57 +/- 2.28, p less than or equal to 0.01) associated with a decrease in 2,3, DPG (from 0.94 +/- 0.31 mol/mol Hb at 0.64 +/- 0.24 p less than 0.01). Among the factors responsible for this variation in the affinity, it was proved that the volume of blood transfused was of importance as well as a decrease in body temperature during the operation. When the temperature is made to vary from 37 degrees C to 35 degrees C. the P50 ranges from 25.57 +/- 2.28 to 22.86 +/- 0.97 (p less than 0.01). To conclude the authors underline the importance of hypothermia and the volume of blood transfused (average time of preservation = 15 days) on the effects of the affinity of oxygen for hemoglobin.

Adult↗
PubMed1977

[Bronchial spasm and bronchial motoricity].

The author recalls the phenomena which control bronchomotility, without a personal study but based on recent bibliography. After recalling the bronchial nerve supply, the chemical intermediates, the various responses of the bronchial tree to autacoids, the author recalls the association of anesthesia and bronchospasm. Although the bronchial reactions of histaminic origin are the most frequent, mechanical or chemical irritation is recalled with an elementary description of "irritant receptors" and stretch receptors. Finally, the other causes of bronchial narrowing are considered: vago-sympathetic imbalance, atopic background, influence of the anesthetic on vagal tone or on adrenal medullary secretion.

Anesthesia, General↗
PubMed1977

[Anaphylactic reactions observed with anesthetics and adjuvants].

The author reports an inquiry concerning 66 patients who all had an anaphylactoid reaction. The hour of onset, the type of reaction, (skin, bronchial or systemic), their association, the drugs responsible, and the diagnostic difficulties are reviewed. In this respect, in relation to the results of the above inquiry and the data in the literature, the skin and bronchial reactions are described, and the signs of anaphylactic shock recalled. The substances possible are then reviewed with the possible correlation between the type of accident and the drug responsible. Finally the role of macromolecules is discussed.

Adjuvants, Anesthesia↗
PubMed1976

[Histamine-type reactions seen in general anesthesia].

The article analyses the results of a test conducted in 7 departments of Anaesthesia and Reanimation, concerning accidents of a histaminic type which occured following the administration of anaesthetic agents. It seems that very few of the products used lack the property of releasing histamine. The accidents observed may have more complex origins, such as the release of serotonin or bradykinin, etc...,but they seem, nevertheless to be closely linked to the histaminic level and vary in seriousness in relation to that level. The study of the very kind of accident observed attempts to explain the cardiac arrests reported in our enquiry. The difficulty of putting into effect an eventual immuno-allergic process is evoked. Finally, the treatment seems to be sterotypic and effective as there was only one death among the 66 cases recorded.

Adolescent↗
PubMed1975

[Contribution to the study of Trive 1000].

A glucid-lipid and protein compound nutriment: Trive 1000 was administered to 53 patients during the first three postoperative days in varying doses: -1.000 ml per day to a first group -1.500 ml per day to a second group. The local tolerance was quite good. However, a few accidents of a general character were noted: they were due to a great extent to a non-observance of the rules of preservation. A study of the glucides, in Sorbitol form, showed a good assimilation of the substratum. Glycemia remaining within normal, no glycosuria or ketonuria could be observed. The assimilation of the proteins seemed on the whole satisfactory. No important rise in the blood urea was noted. Nitrogen balances showed that, thanks to this nutriment, almost half of them were positive during the post-aggressive period. The more important the dose of Trive 1000, the more positive the nitrogen balances were. The administration of lipids did not reveal any significant change in the total lipids, triglycerides or cholesterol. A study of the graphic record of lipid levels showed chylomicrons twice. On the opposite, lipoproteins were hardly modified apart from a significant in pre-beta lipoproteins. The quantitative analysis of amino-acids proved interesting. A comparative study of amino-acids both in blood and urine before and after the administration of Trive 1000 showed very little variations in connection with essential amino-acids. If the proportions in the blood of non-essential amino-acids were comparatively but little modified before and after the treatment, on the oppostie, the urinary clearance rate of the same amino-acids after treatment was far more variable and often quite important as far as certain amino-acids were concerned.

Adolescent↗