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dc.creatorPalacios M,Sylvia
dc.creatorPérez P,Osvaldo
dc.creatorFlores A,Guillermo
dc.creatorOlmos C,Alfonso
dc.date2000-05-01
dc.date.accessioned2019-05-02T21:10:48Z
dc.date.available2019-05-02T21:10:48Z
dc.identifierhttps://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0034-98872000000500003
dc.identifier.urihttp://revistaschilenas.uchile.cl/handle/2250/81112
dc.descriptionBackground: It has been proved that there is an inspiratory muscle dysfunction in mitral stenosis; Although its causes still remain unknown. Aim: to evaluate the effect of percutaneous balloon mitral valvuloplasty (PMV) on inspiratory muscle performance (IMP) in patients with mitral stenosis (mitral area < 1.5 cm²). Patients and methods: We studied IMP in 8 patients (35 ± 10 years) before and 3 months after successful PMV. Inspiratory muscle strength was studied by measuring maximal statistical inspiratory mouth pressure (MIP). Endurance was evaluated using a two minute incremental threshold loading test in order to obtain the maximal sustainable inspiratory pressure (SIP), with the maximal sustainable load (MSL) the patients could sustain for 2 minutes. Results: Mitral valvuloplasty increased mean cardiac index from 3.1 ± 0.3 to 4.15 ± 0.3 l/min/m² (p<0.01), and significantly decreased mean pulmonary and capillary pressures. The MIP value(118 ± 6 cmH2O), similar to that of normal group, increased to 137 ± 7 cmH2O (p<0.01). SIP and maximal sustainable load were 52 ± 3 cmH2O and 294 ± 29 g respectively, lower than normal subjects (p<0.05) They increased after PMV to 80 ± 3 cmH2O and 463 ± 26 g respectively (p<0.001). Conclusions: PMV improved inspiratory muscle function in patients with severe mitral stenosis, probably secondary to a decrease work of breath and improvement of ventricular function. (Rev Méd Chile 2000; 128: 467-74)
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dc.languagees
dc.publisherSociedad Médica de Santiago
dc.relation10.4067/S0034-98872000000500003
dc.rightsinfo:eu-repo/semantics/openAccess
dc.sourceRevista médica de Chile v.128 n.5 2000
dc.subjectMitral valve stenosis
dc.subjectMuscle weakness
dc.subjectRespiratory muscles
dc.subjectVentricular dysfunction
dc.titleMejoría de la función muscular inspiratoria en pacientes con estenosis mitral cerrada después de valvuloplastia mitral percutánea: comunicación preliminar


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