Association between reduced pulmonary diffusing capacity and cardiac autonomic dysfunction

Dario Pitocco, Leonello Fuso, Gaetano Antonio Lanza, Filippo Crea, Pasquale Santangeli, Francesco Zaccardi, Anna Longobardi, Fabio Infusino, Raffaele Antonelli Incalzi, Giovanni Ghirlanda

Risultato della ricerca: Contributo in rivistaArticolo in rivistapeer review

12 Citazioni (Scopus)

Abstract

BACKGROUND: In Type 1 diabetes mellitus (DM), it has been suggested that autonomic nervous system dysfunction (NAD) impairs lung diffusion capacity. Heart rate variability (HRV), a measure of cardiac autonomic function, is a sensitive method of detecting NAD. To our knowledge, no previous study has assessed whether cardiac sympatho-vagal balance is associated with lung diffusion capacity in diabetes. METHODS: Twenty Type 1 DM patients without pulmonary abnormalities and systemic NAD underwent measurement of lung diffusion capacity for carbon monoxide (DLCO) by single-breath method and assessment of cardiac autonomic function by HRV analysis on 24-h electrocardiographic Holter recordings. RESULTS: Standard respiratory function tests and peripheral autonomic tests were normal in all patients. DLCO was lower than normal reference values in six patients (30%). DLCO correlated significantly with most HRV variables, independent of the clinical and laboratory variables. The strongest correlation was found with standard deviation of all RR intervals (SDNN; r = 0.62, P = 0.003) in the time domain and low frequency (LF) power (r = 0.73, P < 0.001) in the frequency domain. CONCLUSIONS: In Type 1 diabetes, a significant association exists between cardiac NAD and reduced DLCO in the absence of clinical respiratory and autonomic abnormalities. Thus, NAD may be involved in the early reduction of DLCO in these patients, possibly through abnormalities in the regulation of pulmonary blood flow at the microvascular level.
Lingua originaleEnglish
pagine (da-a)1366-1369
Numero di pagine4
RivistaDiabetic Medicine
DOI
Stato di pubblicazionePubblicato - 2008

Keywords

  • Type 1 Diabetes

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