Mejoría de la función muscular inspiratoria en pacientes con estenosis mitral cerrada después de valvuloplastia mitral percutánea: comunicación preliminar
Background: 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...
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Sociedad Médica de Santiago
2000
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oai:scielo:S0034-988720000005000032004-06-22Mejoría de la función muscular inspiratoria en pacientes con estenosis mitral cerrada después de valvuloplastia mitral percutánea: comunicación preliminarPalacios M,SylviaPérez P,OsvaldoFlores A,GuillermoOlmos C,Alfonso Mitral valve stenosis Muscle weakness Respiratory muscles Ventricular dysfunction Background: 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)info:eu-repo/semantics/openAccessSociedad Médica de SantiagoRevista médica de Chile v.128 n.5 20002000-05-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872000000500003es10.4067/S0034-98872000000500003 |
institution |
Scielo Chile |
collection |
Scielo Chile |
language |
Spanish / Castilian |
topic |
Mitral valve stenosis Muscle weakness Respiratory muscles Ventricular dysfunction |
spellingShingle |
Mitral valve stenosis Muscle weakness Respiratory muscles Ventricular dysfunction Palacios M,Sylvia Pérez P,Osvaldo Flores A,Guillermo Olmos C,Alfonso Mejoría de la función muscular inspiratoria en pacientes con estenosis mitral cerrada después de valvuloplastia mitral percutánea: comunicación preliminar |
description |
Background: 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) |
author |
Palacios M,Sylvia Pérez P,Osvaldo Flores A,Guillermo Olmos C,Alfonso |
author_facet |
Palacios M,Sylvia Pérez P,Osvaldo Flores A,Guillermo Olmos C,Alfonso |
author_sort |
Palacios M,Sylvia |
title |
Mejoría de la función muscular inspiratoria en pacientes con estenosis mitral cerrada después de valvuloplastia mitral percutánea: comunicación preliminar |
title_short |
Mejoría de la función muscular inspiratoria en pacientes con estenosis mitral cerrada después de valvuloplastia mitral percutánea: comunicación preliminar |
title_full |
Mejoría de la función muscular inspiratoria en pacientes con estenosis mitral cerrada después de valvuloplastia mitral percutánea: comunicación preliminar |
title_fullStr |
Mejoría de la función muscular inspiratoria en pacientes con estenosis mitral cerrada después de valvuloplastia mitral percutánea: comunicación preliminar |
title_full_unstemmed |
Mejoría de la función muscular inspiratoria en pacientes con estenosis mitral cerrada después de valvuloplastia mitral percutánea: comunicación preliminar |
title_sort |
mejoría de la función muscular inspiratoria en pacientes con estenosis mitral cerrada después de valvuloplastia mitral percutánea: comunicación preliminar |
publisher |
Sociedad Médica de Santiago |
publishDate |
2000 |
url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872000000500003 |
work_keys_str_mv |
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