Persistence of lung function abnormalities despite sustained success of percutaneous mitral valvotomy: the need for an early indication.

Abstract:

AIMS:We assessed early and long-term pulmonary function changes after percutaneous balloon mitral valvotomy (PBMV). METHODS AND RESULTS:Mitral area, lung function, and exercise capacity were evaluated before, immediately after, and 3 months, 6 months, and 12 months after successful PBMV in 24 patients. PBMV resulted in a significant and sustained increase in mitral area, from 1.0 +/- 0.1 to 1.9 +/- 0.1 cm2 (p = 0.001) [mean +/- SD], with a progressive increase in exercise tolerance at 6-month follow-up (from 22.6 +/- 1.4 to 28.2 +/- 1.2 mL/kg, p = 0.0001). An immediate drop in the diffusing capacity of the lung for carbon monoxide (DLCO) was observed (from 26.7 +/- 1.5 to 22.3 +/- 1.1 mL/min/mm Hg, p = 0.0002) after PBMV, followed by a gradual regression to baseline values at 3 months; at 1 year, the DLCO remained elevated (27.3 +/- 6.3 mL/min/mm Hg). The flow in the small airways was reduced at baseline, and there was no significant change during follow-up. CONCLUSIONS:PBMV produces an initial decrease in DLCO, suggesting a reduction of pulmonary congestion. During follow-up, the regression to the initial lung diffusion values despite a sustained hemodynamic improvement suggests that some irreversible interstitial changes were present. In patients with mitral stenosis, an impairment of lung function parameters suggests that PBMV must be performed early, even if patients have few symptoms.

journal_name

Chest

journal_title

Chest

authors

Gómez-Hospital JA,Cequier A,Romero PV,Cañete C,Ugartemendia C,Iràculis E,Esplugas E

doi

10.1378/chest.127.1.40

subject

Has Abstract

pub_date

2005-01-01 00:00:00

pages

40-6

issue

1

eissn

0012-3692

issn

1931-3543

pii

S0012-3692(15)32369-2

journal_volume

127

pub_type

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