Comparative analysis of the strength of the respiratory muscles in community-acquired pneumonia with different severity of endogenous intoxication

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Abstract

Aim. To assess the strength of the respiratory muscles in patients with community-acquired pneumonia (CAP) with varying severity of endogenous intoxication.

Materials and methods. In the hospital, 78 men aged 18–26 years with CAP were examined. СAP was diagnosed in 56 (72%) patients, severe CAP in 22 (28%). The severity of endogenous intoxication was verified using intoxication indices: hematological index of intoxication (HII), leukocyte index of intoxication (LII), nuclear index of intoxication (NII) and Krebs index. Middleweight molecules (MWM) was determined by spectrophotometry in the serum and the concentration of interleukin (IL)-10 and tumor necrosis factor  (TNF-) by ELISA. The strength of the respiratory muscles was measured on the device Micro RPM (Care Fusion, Great Britain). The maximum expiratory pressure (МЕР), inspiratory pressure (MIP) in the oral cavity, the Maximal Rate of Pressure Development (MRPD) during inhalation (MRPDin) and exhalation (MRPDex), and intranasal test (SNIP) were determined. Statistical processing was performed using descriptive statistics, Mann–Whitney test, correlation and cluster analysis.

Results. Three clusters of endogenous intoxication corresponding to mild, moderate and severe degree were identified. The first cluster was represented only by patients with mild CAP, the second-mild CAP and severe CAP, and the third – severe CAP. Dysfunction of the expiratory respiratory muscles prevailed during the height of the disease in patients with the first cluster, and in the second and third inspiratory, including the diaphragm. The level of actually measured values of MIP and SNIP was 68% and 58% of those due to severe endogenous intoxication. Significant negative correlations were established LII, HII, MWM, TNF-, IL-10 с MEP, MRPDex, MIP и SNIP. Respiratory muscle dysfunction remained only expiratory respiratory muscles in convalescents of the first cluster, and expiratory and inspiratory muscles of the second and third cluster.

Conclusion. The development of respiratory muscle dysfunction in CAP is associated with the influence of endogenous intoxication factors. The results can be used in personalized programs of rehabilitation.

About the authors

B. I. Geltser

Far Eastern Federal University

Author for correspondence.
Email: Geltser@vvsu.ru
ORCID iD: 0000-0002-9250-557X

чл.-кор. РАН, д.м.н., проф., директор департамента клинической медицины

Russian Federation, Vladivostok

A. A. Dej

Far Eastern Federal University

Email: Geltser@vvsu.ru
ORCID iD: 0000-0003-2626-412X

аспирант Школы биомедицины

Russian Federation, Vladivostok

I. N. Titorenko

Far Eastern Federal University

Email: Geltser@vvsu.ru
ORCID iD: 0000-0002-1926-5274

аспирант Школы биомедицины

Russian Federation, Vladivostok

V. N. Kotelnikov

Far Eastern Federal University

Email: Geltser@vvsu.ru
ORCID iD: 0000-0001-5830-1322

д.м.н., проф. департамента клинической медицины

Russian Federation, Vladivostok

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