Key result
Inpatient pulmonary rehabilitation is linked to increased RR SD1, producing homeodynamic responses in ~45% of patients.
Why the study?
Bronchobstructive diseases alter autonomic and hemodynamic regulation, and nonlinear circulatory rhythm metrics may capture individual responses to pulmonary rehabilitation. This study sought to identify individual profiles of changes in nonlinear neural and hemodynamic parameters after rehabilitation and assess their associations with baseline characteristics.
Does inpatient pulmonary rehabilitation improve nonlinear parameters of neural and hemodynamic regulation in patients with bronchobstructive syndrome?
Observational (n=20)
Does inpatient pulmonary rehabilitation improve nonlinear parameters of neural and hemodynamic regulation in patients with bronchobstructive syndrome?
Inpatient pulmonary rehabilitation in patients with bronchobstructive syndrome significantly increased RR SD1 and revealed three distinct hemodynamic response profiles, supporting functional phenotyping for personalized rehabilitation monitoring.
Answers are grounded in this paper and cite their sources.
Hypothesis-generating in this pilot; leaves open whether response profiling improves rehabilitation outcomes in bronchobstructive syndrome.
Background. Bronchobstructive diseases are accompanied by changes in autonomic and hemodynamic regulation. Nonlinear characteristics of circulatory rhythms may serve as integrative functional features of individual rehabilitation response, but they are not direct molecular biomarkers. Objective. To identify individual profiles of changes in nonlinear parameters of neural and hemodynamic regulation in patients with bronchobstructive diseases after rehabilitation and to assess their associations with baseline clinical and functional characteristics. Material and methods. Twenty patients with bronchobstructive syndrome were examined before and after inpatient rehabilitation. Sample entropy, Poincaré plot parameters, and pseudo-attractor measures were calculated for RR, SSTI, and DDTI intervals. Paired changes were assessed with the Wilcoxon signed-rank test; Bonferroni correction was applied to four key comparisons. Individual trajectories were clustered by k-means; clinical associations were explored by Spearman correlation. Results. Nominal increases were observed in RR SampEn and RR SD1, whereas SSTI SD2 and SSTI S decreased. After Bonferroni correction, only the increase in RR SD1 remained statistically significant (p = 0.01). No material change was found for DDTI. Nominal associations of RR SampEn change with baseline FEV1, RR SD1 change with BMI, and SSTI SD2 change with baseline dyspnea were considered exploratory. Three preliminary response profiles were identified: homeodynamic (45%), borderline (30%), and dissociative (25%). Conclusion. The observed interindividual heterogeneity supports functional phenotyping for personalized rehabilitation monitoring. Clinical use of these profiles requires independent validation and comparison with clinical outcomes and molecular and cellular markers.
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Rubinskiy et al. (2026) conducted an observational in Bronchobstructive syndrome (n=20). Inpatient pulmonary rehabilitation vs. Pre-rehabilitation baseline was evaluated on Changes in nonlinear parameters of neural and hemodynamic regulation (RR SD1) (p=0.01). Inpatient pulmonary rehabilitation significantly increased RR SD1 (p=0.01) and yielded homeodynamic (45%), borderline (30%), and dissociative (25%) response profiles.
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