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At least 811 records · Page 45Linked to original sources
PubMed1981

[Sodium salts or methylglucamine salts in contrast media for infusion pyelography? (author's transl)].

Tolerance of two contrast media was compared by a double blind study. High doses of iodine (45 g) were used for both contrast substances. Sodium Ioglicinate was giving best radiological contrast but produced more side-effects, especially nausea, as compared to Methylglucamine-Ioglicinate. On the contrary Methylglucamine-Ioglicinate did not give best density but did produce less side-effects. Thus the investigator has to consider very carefully, which of the compounds has to be preferred.

Adolescent↗
PubMed1993

Nailfold capillary density in salt-sensitive and salt-resistant borderline hypertension.

OBJECTIVE: Nailfold capillary density was measured at rest and after 4 min circulatory arrest in order to investigate the relationship between sodium-sensitive hypertension and microvessel density. DESIGN: Seventeen sodium-sensitive and 28 sodium-resistant young borderline hypertensive males and 10 normotensive controls were studied. All of the subjects ate a diet containing 120 mmol/day sodium during the week preceding the investigation. METHODS: Capillary density was investigated by means of intravital video-microscopy. Blood pressure, cardiac index, plasma volume and humoral factors, such as plasma renin activity, plasma aldosterone and atrial natriuretic peptide, were also determined. RESULTS: No differences in capillary density were found under basal conditions. However, during hyperaemia the sodium-resistant subjects had significantly fewer perfused capillaries than both the sodium-sensitive and control subjects, whereas (apart from blood pressure) macrocirculatory parameters and humoral factors did not differ among the three groups. CONCLUSION: Sodium-resistant borderline hypertensives seem to be characterized by a (possibly structural) reduction in nailfold capillarity, a phenomenon that is, as yet, unexplained.

Adult↗
PubMed1993

Vascular distensibility and compliance in salt-sensitive and salt-resistant borderline hypertension.

OBJECTIVE: To gain insight into the relationship between vascular compliance and sodium sensitivity. DESIGN: Arterial and venous compliance was determined in 17 sodium-sensitive and 28 sodium-resistant, young, borderline hypertensive males and in 10 age-matched normotensive controls, during regular sodium intake. METHODS: The carotid, femoral and brachial arteries were studied using a non-invasive ultrasound vessel wall movement detector system, and venous compliance was determined using forearm strain-gauge plethysmography. Cardiac output, plasma volume and hormonal factors, such as plasma renin activity, were also measured to assess their possible influence on vascular compliance. RESULTS: Large artery compliance was significantly less in the sodium-sensitive than in the sodium-resistant subjects in all arteries studied. Compared with controls, arterial compliance was reduced significantly in the sodium-sensitive group, whereas the sodium-resistant group did not differ significantly from the controls. Venous compliance was reduced equally in the two hypertensive groups compared with the controls, although the differences did not reach statistical significance. Cardiac output, blood pressure, plasma volume and hormonal factors did not differ between sodium-sensitive and sodium-resistant subjects and could not have been responsible for the observed differences in arterial compliance. CONCLUSIONS: The results of this study suggest that sodium-sensitive borderline hypertensives have reduced large artery compliance compared with age-matched sodium-resistant subjects. Since this finding could not be explained by differences in haemodynamic or hormonal factors between the groups, this suggests alterations to the viscoelastic properties of the arterial walls in sodium-sensitive subjects.

Adult↗