Der 24-Stunden-Rhythmus des menschlichen Blutkreislaufes

Menzel, W.

doi:10.1007/978-3-662-29184-9

Cited by 4 publications

(5 citation statements)

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“…Various authors have already demonstrated a good volume efficacy for this plasma expander, with a clear simultaneous improvement in the fluidity of the blood, and described a resulting improvement in the clinical picture [25,37,47,48,52]. Various authors have already demonstrated a good volume efficacy for this plasma expander, with a clear simultaneous improvement in the fluidity of the blood, and described a resulting improvement in the clinical picture [25,37,47,48,52].…”

Section: Discussionmentioning

confidence: 99%

“…It is wellknown that a single high fat meal does not lead to significant alteration of the plasma viscosity [18,37]. It is wellknown that a single high fat meal does not lead to significant alteration of the plasma viscosity [18,37].…”

Section: Discussionmentioning

confidence: 99%

“…Changes are known to occur in the PCV [37,50] or the total serum protein concentration [50], for example, in relation to circadian rhythms. Fluctuations of up to 8% occur over one 24-h rhythm [8,31]; but mean fluctuations of 4% do still occur even in the 12-h range, as a result of which, for the material presented here, a fixed period for the removal of the blood was adhered to, namely the period between 8 and 9 a.m. -in accordance with the requirements specified by Junge et al [19] and Merten and Boroviczeny [38].…”

Section: Methods Of Measurementmentioning

confidence: 99%

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Blood fluidity and endothelial influences on microcirculation

Kiesewetter¹,

Jung²,

Blume³

et al. 1986

Klin Wochenschr

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In cases of peripheral arterial occlusion disease in Fontaine's stage IIb (PAOD IIb) with a walking distance of less than 200 m, the therapy that has priority, besides removing risk factors, is physical exercise. Very often it seems that concomitant rheological treatment with drugs is advisable to support the therapy and to improve compliance. The experience gained in the last 30 months in the treatment of PAOD IIb in a large angiological outpatient establishment is presented. All the patients were given thorough medical examination before the start of the therapy, and their angiological and rheological status was recorded. Depending on the results of the examinations, the patients with PAOD IIb were given one of three treatment variants: Patients with a haematocrit less than 43% and moderately altered rheology (group I; therapy: physical exercise). Patients with a haematocrit less than 43% and severely altered rheology, in particular increased erythrocyte rigidity (group II; therapy: physical exercise combined with naftidrofuryl treatment). Patients with a haematocrit of 43% or more and severely altered rheology (group III; therapy: physical exercise with haemodilution combined with naftidrofuryl treatment). Before the drug treatment was started, the possibility of surgical reconstruction of the vessels or angioplasty was discussed and the conservative therapy was undertaken only after surgery or when surgery had been rejected. Every course of treatment included reducing the risk factors as far as possible. All three conservative therapies were implemented for a period of at least 6 months. The increase in the walking distance was 157% (n = 27) after physical exercise alone, 238% (n = 27) with the naftidrofuryl combination therapy and 311% (n = 27) with the naftidrofuryl/haemodilution combination therapy.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methods Of Measurementmentioning

confidence: 99%

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Blood fluidity and endothelial influences on microcirculation

Kiesewetter¹,

Jung²,

Blume³

et al. 1986

Klin Wochenschr

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“…Circadian rhythmic aspects of human cardiovascular function were reviewed by Smolensky et al (1976). A 24-hour rhythm has been observed in blood pressure (Zulch and Hossman 1967 and Richardson et al 1964), blood viscosity (Ehrly and Jung 1973), hema-, tocrit (Menzel 1941 andSeaman et al 1965) and in compounds such as serum protein (Doering et al 1951, Renbourn 1947, scialic acid, protein bound carbohydrate and hexosamine (Seaman et al 1965), steroids (Bartter et al 1962) and plasma catecholamines (Aronow et al 1973). In adults, diseases such as cardiac arrest and asthmatic attacks manifest themselves often during the early morning hours (Kales andKales 1970, Nowlin et al 1965).…”

Section: Discussionmentioning

confidence: 99%

Respiration During the First Six Months of Life in Normal Infants: II. The Emergence of a Circadian Pattern

Hoppenbrouwers¹,

Jensen²,

Hodgman³

et al. 1979

Neuropediatrics

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The objective of the present study was to investigate the emergence of circadian patterns in respiratory rates. Twenty-five neurologically normal infants were monitored for 12-hours during the first week of life and at one, two, three, four and six months of age. Each minute of the recordings of EEG, eye movements, somatic activity, respiration, ECG and temperature was coded into Active sleep (AS), Quiet sleep (QS), Indeterminate (IN) and Awake (AW). The night was divided into four equal intervals and a computer program calculated the mean respiratory rate for each interval as a function of state and age. During the first week of life group means of respiratory rates increased linearly with each interval in all states. A circadian pattern with lowered respiratory rates between 10:00 p.m. and 1:00 a.m. emerged at different ages in different sleep states. This pattern was first seen at one month of age in AS and IN, and at three months in QS. It was also observed in AW at three months of age, suggesting that the circadian rhythm is not solely an expression of the sleep wakefulness cycle. Feeding patterns contributed to but did not explain these observations.

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“…Several mechanisms may have a role in the reduction of calcium at night. Haemodilution occurring as a consequence of a higher blood volume at night 26 is thought to be important, but the predominant factor is likely to be the reduction in serum albumin that also occurs at night. 25 A proportion of total blood calcium is bound to protein and therefore it can be expected that total calcium concentration decreases at night.…”

mentioning

confidence: 99%

Correlation of serum-adjusted calcium with ionized calcium over a 24-h period in patients with adult growth hormone deficiency before and after growth hormone replacement

et al. 2010

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Background: Difficulties associated with measuring ionized calcium in clinical practice have led to the use of total calcium, with or without adjustment for albumin concentration, as an estimate of calcium metabolism. We examined the correlation between ionized and total/adjusted calcium over a 24-h period in patients with adult growth hormone deficiency (AGHD), a group of patients with previously reported alterations in calcium metabolism. Methods: Four patients with AGHD were consented to the study. They were hospitalized for 24 h where half-hourly blood samples were collected for ionized calcium, total calcium, albumin and creatinine, before and one month after the commencement of growth hormone replacement. Total calcium concentration was adjusted for serum albumin. Results: Strong correlations were found between ionized calcium and adjusted calcium (r 2 ¼ 0.840 and 0.766 for visits 1 and

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Der 24-Stunden-Rhythmus des menschlichen Blutkreislaufes

Cited by 4 publications

References 0 publications

Blood fluidity and endothelial influences on microcirculation

Blood fluidity and endothelial influences on microcirculation

Respiration During the First Six Months of Life in Normal Infants: II. The Emergence of a Circadian Pattern

Correlation of serum-adjusted calcium with ionized calcium over a 24-h period in patients with adult growth hormone deficiency before and after growth hormone replacement

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