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Trained breathing-induced oxygenation acutely reverses cardiovascular autonomic dysfunction in patients with type 2 diabetes and renal disease

Articolo
Data di Pubblicazione:
2016
Abstract:
Aims: Cardiovascular autonomic dysfunction, evaluated as baroreflex sensitivity (BRS), could be acutely corrected by slow breathing or oxygen administration in patients with type 1 diabetes, thus suggesting a functional component of the disorder. We tested this hypothesis in patients with the type 2 diabetes with or without renal impairment. Methods: Twenty-six patients with type 2 diabetes (aged 61.0 ± 0.8 years, mean ± SEM; duration of diabetes 10.5 ± 2 years, BMI 29.9 ± 0.7 kg/m2, GFR 68.1 ± 5.6 ml/min) and 24 healthy controls (aged 58.5 ± 1.0 years) were studied. BRS was obtained from recordings of RR interval and systolic blood pressure fluctuations during spontaneous and during slow, deep (6 breaths/min) controlled breathing in conditions of normoxia or hyperoxia (5 l/min oxygen). Results: During spontaneous breathing, diabetic patients had lower RR interval and lower BRS compared with the control subjects (7.1 ± 1.2 vs. 12.6 ± 2.0 ms/mmHg, p < 0.025). Deep breathing and oxygen administration significantly increased arterial saturation, reduced RR interval and increased BRS in both groups (to 9.6 ± 1.8 and 15.4 ± 2.4 ms/mmHg, respectively, p < 0.05, hyperoxia vs. normoxia). Twelve diabetic patients affected by chronic diabetic kidney disease (DKD) presented a significant improvement in the BRS during slow breathing and hyperoxia (p < 0.025 vs. spontaneous breathing during normoxia). Conclusions: Autonomic dysfunction present in patients with type 2 diabetes can be partially reversed by slow breathing, suggesting a functional role of hypoxia, also in patients with DKD. Interventions known to relieve tissue hypoxia and improve autonomic function, like physical activity, may be useful in the prevention and management of complications in patients with diabetes.
Tipologia CRIS:
1.1 Articolo in rivista
Keywords:
Baroreflex sensitivity; Cardiovascular autonomic neuropathy; Diabetic kidney disease; Hypoxia; Oxygen; Type 2 diabetes mellitus
Elenco autori:
Esposito, Pasquale; Mereu, Roberto; De Barbieri, Giacomo; Rampino, Teresa; Di Toro, Alessandro; Groop, Per-Henrik; Dal Canton, Antonio; Bernardi, Luciano
Autori di Ateneo:
BERNARDI LUCIANO
DAL CANTON ANTONIO
DE BARBIERI GIACOMO
RAMPINO TERESA
Link alla scheda completa:
https://iris.unipv.it/handle/11571/1512474
Pubblicato in:
ACTA DIABETOLOGICA
Journal
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