English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Hematocrit (Hct) changes during mental stress were studied in 21 patients with mild hypertension. A 10 min arithmetic stress test increased blood pressure from 129 +/- 2/80 +/- 2 mmHg (mean +/- SEM) to 167 +/- 5/98 +/- 3 mmHg, and heart rate from 64 +/- 2 to 81 +/- 3 (p less than 0.001). Concomitantly, a significant (p less than 0.001) increase in Hct was observed (from 41.5 +/- 0.7% to 42.2 +/- 0.8%), and increments of Hct (-0.1% to 2.2%) were significantly (r = 0.61, p less than 0.01) correlated with those of systolic blood pressure. Plasma levels of norepinephrine (NE), epinephrine (E) and atrial natriuretic peptide (ANP) also showed a significant increase after mental stress. All these changes disappeared after a 60 min recovery period. The results suggest that mental stress increases Hct promptly, which may be due to concomitant increases in plasma NE, E and ANP levels. Hct elevation resulting from mental stress may be clinically relevant, at least, in hypertensive patients who are at risk of occlusive vascular diseases.

Hematocrit increase by mental stress in hypertensive patients.