Abstract:
:Pulmonary valve replacement (PVR) reduces right ventricular (RV) volumes in the setting of long-term pulmonary regurgitation after Tetralogy of Fallot (ToF) repair; however, little is known of its effect on RV diastolic function. Right atrial volumes may reflect the burden of RV diastolic dysfunction. The objective of this paper is to evaluate the clinical, echocardiographic, biochemical and cardiac magnetic resonance (CMR) variables, focusing particularly on right atrial response and right ventricular diastolic function prior to and after elective PVR in adult patients with ToF. This prospective study was conducted from January 2009 to April 2013 in consecutive patients > 18 years of age who had undergone ToF repair in childhood and were accepted for elective PVR. Twenty patients (mean age: 35 years; 70% men) agreed to enter the study. PVR was performed with a bioporcine prosthesis. Concomitant RV reduction was performed in all cases when technically possible. Pulmonary end-diastolic forward flow (EDFF) decreased significantly from 5.4 ml/m(2) to 0.3 ml/m(2) (p < 0.00001), and right atrial four-chamber echocardiographic measurements and volumes by 25% (p = 0.0024): mean indexed diastolic/systolic atrial volumes prior to surgery were 43 ml/m(2) (SD+/-4.6)/63 ml/m(2) (SD+/-5.5), and dropped to 33 ml/m(2) (SD+/-3)/46 ml/m(2) (SD+/-2.55) post-surgery. All patients presented right ventricular diastolic and systolic volume reductions, with a mean volume reduction of 35% (p < 0.00001). Right ventricular diastolic dysfunction was common in a population of severely dilated RV patients long term after ToF repair. Right ventricular diastolic parameters improved as did right atrial volumes in keeping with the known reduction in RV volumes, after PVR.
journal_name
Int J Cardioljournal_title
International journal of cardiologyauthors
Pijuan-Domenech A,Pineda V,Castro MA,Sureda-Barbosa C,Ribera A,Cruz LM,Ferreira-Gonzalez I,Dos-Subirà L,Subirana-Domènech T,Garcia-Dorado D,Casaldàliga-Ferrer Jdoi
10.1016/j.ijcard.2014.09.009subject
Has Abstractpub_date
2014-11-15 00:00:00pages
261-5issue
1eissn
0167-5273issn
1874-1754pii
S0167-5273(14)01711-2journal_volume
177pub_type
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journal_title:International journal of cardiology
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pub_type: 杂志文章,多中心研究,随机对照试验
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