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Biomedical subjects

M Arnold

Publications and source records attributed to M Arnold.

At least 217 records · Page 12Linked to original sources
PubMed1980

[Objective assessment of clinical gingival findings by using photoplethysmography].

The effects of vaso-active drugs on the inclination time and the plateau index in the plethysmogram were determined on different days and at different hours of the day. A first evaluation of the limits of performance and of the diagnostic possibilities, based on 1,500 measured values, permits to conclude that this technique is suited for differentiating between normal and disturbed periodontal microcirculation, and between functional and organic vascular changes.

Blood Pressure↗
PubMed1980

Surgical therapy for left main coronary artery disease.

The course of a consecutive series of 271 patients who underwent coronary artery bypass for left main coronary artery obstruction (greater than or equal to 50% luminal diameter stenosis) between January, 1971, and December, 1976, at the Mid-America Heart Institute is reported. There were four (1.5%) operative deaths. All patients have been followed until their death or for 2 to 5 years with a mean follow-up of 3.8 years. There has been an incidence of acute myocardial infarction of 2.2 per 100 patient-years of follow-up, and four patients (1.5%) have required a second coronary artery bypass procedure. There have been 19 late deaths. Death was more frequent in women and in patients who had fewer than three bypasses performed. Actuarial survival at 5 years for the entire group was 88.8%. The expected survival rate of a general population matched for age and sex at 5 years is 88.4%. It is concluded that coronary artery bypass for left main coronary artery disease favorably affects longevity.

Adult↗
PubMed1979

Five-year follow-up of patients undergoing coronary artery bypass.

Two hundred eighty-two patients who underwent coronary artery bypass operation between January, 1971, and July, 1972, were followed until the time of death or for 5 years after operation. The angina-free status progressively decreased during the period of follow-up but at 5 years 57% of the survivors were free from angina. The total (early and late) incidence of nonfatal myocardial infarction was 3.3 per 100 patient years of follow-up. Nine (3.2%) of the patients had a repeat coronary artery bypass operation within the first 5 postoperative years. The overall 5-year survival was 86.9%. The expected 5-year survival of the general population, matched by sex and age, is 90.7%. Five-year survival was 97% for single-vessel disease, 87% for double-vessel disease, and 85% for triple-vessel disease.

Adult↗
PubMed1979

Energy retention, energy expenditure, and growth in healthy immature infants.

Energy balance studies were done during 10-29 days on 15 immature infants of mean birth weight 1581 g. Mean gross energy intake was 757 kJ/kg (181 kcal) and 79% of this was retained, so that metabolizable energy was 602 kJ/kg (143 kcal). Mean resting metabolic rate was 244 kJ/kg (58.1 kcal), and it increased with advancing maturity. Minimum resting metabolism averaged 199 kJ/kg (47.5 kcal). Energy expended in activity increased with maturity, but amounted to less than 17% of the total energy turnover. Postprandial metabolism caused the mean VO2 to rise by 17% in the hour after a feed, and during 24 hr resulted in consumption of energy equivalent to about 10% of the resting metabolism. Stored energy amounted to 230 kJ/kg (55 kcal) and was linearly related to weight gain (r = 0.92). Energy cost of weight gain was 24 kJ/g (5.7 kcal) and energy stored in new tissue was 16.8 kJ/g (4.0 kcal). Maintenance energy requirement at zero growth rate was about 270 kJ/kg (64 kcal).

Energy Metabolism↗
PubMed1979

[Effect of subjective evaluation on the reproducibility of the gingivitis indices].

The gingival index, gingivitis score, sulcus bleeding index, PM(A) index, selective gingiva index, periodontal index and periodontal disease index were verified with regard to the effect of subjective evaluation on their reproducibility. The authors studied in particular the utility of these indices in case controls and in the detection of minimal changes in the inflammatory process. Due to the numerical classification, the evaluation of the extent and of the degree of severity of the gingivitis requires an subjective decision and, consequently, the choice of an index depends on the objective of the examination. For the purpose of comparison with biometrical parameters, the authors presented an index (selective gingiva index) elaborated by themselves.

Gingivitis↗
PubMed1979

[The correlation between color change, swelling and iodine reaction in gingivitis].

The use of an index with separate evaluation of colour change, swelling and iodine reaction (in accordance with a classification into 4 degrees) and separate determination of the P, M and A units corresponds to the conditions in practice and yields reproducible results. Correlations between colour, swelling and iodine reaction could be established which were most marked for colour and iodine reaction.

Color↗
PubMed1978

[The sensitivity of clinical indices for periodontal studies].

Some of the clinical indices that are most frequently used in periodontal examinations were tested for sensibility. When chosen with regard to the objective of the respective examinations, they are a great help in evaluating gingival changes. Their shortcomings become manifest especially when compared with objective data (pO2, pH, resistance, volume pulse, responsiveness tests). The requirements that should be met under these conditions are formulated.

Humans↗