Independent associations between arterial bicarbonate, apnea severity and hypertension in obstructive sleep apnea

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00159816%3A_____%2F17%3A00068389" target="_blank" >RIV/00159816:_____/17:00068389 - isvavai.cz</a>

Result on the web

<a href="https://respiratory-research.biomedcentral.com/track/pdf/10.1186/s12931-017-0607-9?site=respiratory-research.biomedcentral.com" target="_blank" >https://respiratory-research.biomedcentral.com/track/pdf/10.1186/s12931-017-0607-9?site=respiratory-research.biomedcentral.com</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1186/s12931-017-0607-9" target="_blank" >10.1186/s12931-017-0607-9</a>

Result language

angličtina

Original language name

Independent associations between arterial bicarbonate, apnea severity and hypertension in obstructive sleep apnea

Original language description

Background: Obstructive sleep apnea is characterized by intermittent hypoxia and hypercapnia. CO2 production, transport and elimination are influenced by the carbonic anhydrase enzyme. We hypothesized that elevated standard bicarbonate, a proxy for increased carbonic anhydrase activity, is associated with apnea severity and higher blood pressure in patients with obstructive sleep apnea. Methods: A retrospective analysis of a sleep apnea cohort (n = 830) studied by ambulatory polygraphy. Office systolic/diastolic blood pressure, lung function, and arterial blood gases were assessed during daytime. Results: Arterial standard bicarbonate was increased with apnea severity (mild/moderate/severe 24.1 +/- 1.8, 24.4 +/- 1.7 and 24.9 +/- 2.9 mmol/l, respectively, Kruskal-Wallis test p &lt; 0.001). Standard bicarbonate was independently associated with apnea hypopnea index after adjustment for sex, age, body mass index, smoking, alcohol, hypertension, pO(2) and pCO(2) (standard bicarbonate quartile 1 vs. quartile 4, beta = 10.6, p &lt; 0.001). Log-transformed standard bicarbonate was associated with a diagnosis of hypertension or diastolic blood pressure but not systolic blood pressure adjusting for cofounders (p = 0.007, 0.048 and 0.45, respectively). Conclusions: There was an independent association between sleep apnea severity and arterial standard bicarbonate. The link between high standard bicarbonate and daytime hypertension suggests that carbonic anhydrase activity may constitute a novel mechanism for blood pressure regulation in sleep apnea.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

30203 - Respiratory systems

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

RESPIRATORY RESEARCH

ISSN

1465-993X

e-ISSN

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Volume of the periodical

18

Issue of the periodical within the volume

June

Country of publishing house

GB - UNITED KINGDOM

Number of pages

9

Pages from-to

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UT code for WoS article

000405878600001

EID of the result in the Scopus database

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