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Biomedical subjects

P Smets

Publications and source records attributed to P Smets.

At least 91 records · Page 5Linked to original sources
PubMed1977

Relation of the acid concentration of the parietal component of the gastric juice to the maximal acid output in man.

In two populations of patients tested with S.C. histamine and with I.V. pentagastrin the values of the theoretical acid [H+]O and chloride [Cl-]O concentration of the parietal secretion for a zero value of sodium from the relationships H+ = f ([Na+]) and Cl- = f ([Na+]) were calculated. In both populations a decrease of [H+]O and [Cl-]o for low acid outputs was observed. The parallel decrease of the calculated H+ and Cl- ion concentration of the parietal component for low acid outputs gives indirect evidence that parietal secretion could become hypotonic in patients whose acid output is low.

Chlorides↗
PubMed1976

Effect of weight on prevalence of hypertension, and its interaction with the arm circumference: Belgian Hypertension Committee Epidemiological Study.

1. A first sample of a cross-section of the Belgian population was studied. 2. The presence of hypertension or borderline hypertension was established on the basis of two examinations at 1-3 weeks intervals, during which the blood pressure was measured four times after 10 min rest. 3. The prevalence of both hypertension and borderline hypertension increased with age in the two sexes and, independently of age, with the relative weight. 4. The probable effect of arm circumference in overestimation of blood pressure in heavy subjects was analysed by multivariate correlations. It was concluded that if the influence of arm circumference is excluded, the effect of relative weight on blood pressure is less marked but still present.

Age Factors↗
PubMed1975

[Epidemiology of the coronary risk in a semi-rural population of 420 patients having presented a myocardial infarct].

Various sociological and biological parameters have been studied in a population of 420 subjects - 335 men and 85 women - living in a semi rural country and having presented a myocardial infarct. Our study shows big differences in epidemiology between men and women: 1. The age of women is on an average seven years older than men (63 years against 56). 2. The women's average rate of cholesterol oversteps men's rate by 21 mg% (291 mg % against 271). 3. The blood pressure, systolic and diastolic, is distinctly higher by women (mean 171/97) tan by men (148/98). Amid women, 63% have a S.B.P. equal to or higher than 160 mm Hg against 23% by men and 56% have a D.B.P. equal to or higher than 100 mm Hg against 21 % by men. 4. Hyperglycemia is more frequent among women; man rate: 103 mg % against 88 mg % by men; 17 % of the women have an equal to or higher rate than 110 mg % (8 % among men). 5. Obesity, expressed by a weight index, equal to or higher than 120, is found in 76 % of the women and 34 % of the men. The mean index is 123 by the women and 115 by the men. 6. Cigarette smoking is far more important by men: 65 % of the men smoke at least 15 cigarettes a day with smoke inhalation. This factor is practically not met by women. The smokers get their myocardial infarct at a significantly lower age than no smoking men and women. The women of our infarct population have thus an age, a cholesterol rate, a blood pressure and a glycemia higher than men of the same population; they are more frequently overweight but they don't smoke. Consequently, metabolic agents seem to play an essential part in coronary risk in women.

Adult↗
PubMed1975

[Long-term prognosis of myocardial infarct].

The authors study the long-term prognosis of a population of male subjects having survived 24 to 48 hours to their first myocardial infarction. The mean annual mortality is 6%. The long-term cumulated survival is particualarly influenced by a high blood pressure and by heart failure occurring during the acute episode and in a lesser proportion by age; the prognosis at long-term is not or little influenced by family history, cholesterolemia, cigarette smoking or the presence of angina before infarction. The presence or absence of heart failure and high blood pressure allows to make sub-groups with very different long-term prognosis. In the framework of secondary prevention of ischaemic heart diseases, the authors propose to start a controlled study implying both a programme of physical activity and a long-term energical treatment of arterial hypertension.

Adult↗
PubMed1975

Left ventricular ejection time. multiple relation to physiological and biometrical data; prediction of reference standards.

The relationship between left ventricular ejection time, and physiological or biometrical data, is submitted to multivariate statistical analysis. Methodology is intended to attain three objectives: 1) to simulate a controlled-condition experiment in clinical research, by using the statistical method of multiple regression; 2) to get a wide inference of conclusions, by selecting a sample of two hundred subjects whose biological data cover a wide field; 3) to check the really prospective value of results, by applying the formula worked out in a group of a hundred subjects to another independent group of a hundred subjects. The prediction formula of ejection time takes into account: stroke volume, cardiac cycle duration, body height, sex, age, pulse pressure, blood capacity in oxygen, presence or absence of digitalis treatment or atrial fibrillation. The first aim of the formula is to better evaluate the normal relationship between considered variables. Secondarily it leads to a proposal for estimating mechanical performance of the left ventricle.

Adolescent↗
PubMed1975

Treatment of comatose patients by mechanical hyperventilation.

In case of cranial trauma, early respiratory troubles either of central or peripheral origin often accelerate the deterioration of the neurological situation. The different values of PCO2, PO2, pH and alcaline reserve measured on samples of CSF in comatose patients prove the central acidosis related to metabolic and vascular disorders in the damaged areas. Our results confirm the correlation between the importance of this disturbances and the severity of the trauma. It is thus necessary to insure patients of satisfactory respiration conditions. The tracheobronchial cleansing is applicable to intubated or tracheotomized patients by an instillation of 5ml of simple or bicarbonated physiological serum 4 to 6 times a day, followed by repeated aspirations and associated to a preventive endotracheal instillation of 80 mg of Gentamycin 4 times a day. Moreover we use controlled respiration which does not modify the gazometric parameters in the CSF but which assures patients a normoxia and moderate hypocapnia with a decrease of intracranial hypertension. Treatment by controlled hyperventilation must be precocious, because the recuperation at the level of the damaged zones is very slow.

Adult↗