Cardiac shock wave therapy improves myocardial perfusion and preserves left ventricular mechanics in patients with refractory angina: A study with speckle tracking echocardiography
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Citações na Scopus
5
Tipo de produção
article
Data de publicação
2018
Título da Revista
ISSN da Revista
Título do Volume
Editora
WILEY
Citação
ECHOCARDIOGRAPHY-A JOURNAL OF CARDIOVASCULAR ULTRASOUND AND ALLIED TECHNIQUES, v.35, n.10, p.1564-1570, 2018
Resumo
BackgroundCardiac shockwave therapy (CSWT) is a new potential option for the treatment of patients with chronic coronary disease and refractory angina (RA). We aimed to study the effects of CSWT on left ventricular myocardial perfusion and mechanics in patients with RA. MethodWe prospectively studied 19 patients who underwent CSWT. Left ventricular mechanics were evaluated by speckle tracking echocardiography (STE), and myocardial perfusion by single-photon emission computed tomography, using stress/rest-Technetium-99m Sestamibi, for determination of summed stress score (SSS). Canadian Cardiac Society (CCS), New York Heart Association (NYHA), and quality of life by Seattle Angina Questionnaire (SAQ) were assessed at baseline and 6months after therapy. ResultsCSWT therapy was applied without major side effects. At baseline, 18 patients (94.7%) had CCS class III or IV, and after CSWT there was reduction to 3 (15.8%), P=.0001, associated with improvement in SAQ (38.5%; P<.001). Thirteen (68.4%) had class NYHA III or IV before treatment, with significant reduction to 7 (36.8%); P=.014. No change was observed in the global SSS from baseline to 6-month follow-up (15.338.60 vs 16.60 +/- 8.06; P=.157). However, there was a significant reduction in the average SSS of the treated ischemic segments (2.1 +/- 0.87 pre vs 1.6 +/- 1.19 post CSWT; P=.024). Global longitudinal strain by STE remained unaltered (-13.03 +/- 8.96 pre vs -15.88 +/- 3.43 6-month post CSWT; P=.256). ConclusionCSWT is a safe procedure for the treatment of patients with RA that results in better quality of life, improvement in myocardial perfusion of the treated segments with preservation of left ventricular mechanics.
Palavras-chave
left ventricular mechanics, myocardial perfusion, refractory angina, speckle tracking echocardiography
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