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Mitral annulus morphologic and functional analysis using real time tridimensional echocardiography in patients submitted to unsupported mitral valve repair.

Guedes MA, Pomerantzeff PM, Brandão CM, Vieira ML, Tarasoutchi F, Spinola Pda C, Jatene FB - Rev Bras Cir Cardiovasc (2015 Jul-Sep)

Bottom Line: Posterior mitral annulus demonstrated a significant reduction in immediate postoperative period (P<0.001), remaining stable during the study, and presents a mean of reduction of 25.8% comparing with preoperative period.There was a significant reduction in anteroposterior and mediolateral diameters in the immediate postoperative period (P<0.001), although there was a significant increase in mediolateral diameter between immediate postoperative period and 1 year.Segmentar annuloplasty reduced the posterior component of mitral annulus, which remained stable in a 1-year-period.

View Article: PubMed Central - PubMed

Affiliation: Instituto do Coração do Hospital das Clínicas, Faculdade de Medicina, USP, São Paulo, SP, BR.

ABSTRACT

Introduction: Mitral valve repair is the treatment of choice to correct mitral insufficiency, although the literature related to mitral valve annulus behavior after mitral repair without use of prosthetic rings is scarce.

Objective: To analyze mitral annulus morphology and function using real time tridimensional echocardiography in individuals submitted to mitral valve repair with Double Teflon technique.

Methods: Fourteen patients with mitral valve insufficiency secondary to mixomatous degeneration that were submitted to mitral valve repair with the Double Teflon technique were included. Thirteen patients were in FC III/IV. Patients were evaluated in preoperative period, immediate postoperative period, 6 months and 1 year after mitral repair. Statistical analysis was made by repeated measures ANOVA test and was considered statistically significant P<0.05.

Results: There were no deaths, reoperation due to valve dysfunction, thromboembolism or endocarditis during the study. Posterior mitral annulus demonstrated a significant reduction in immediate postoperative period (P<0.001), remaining stable during the study, and presents a mean of reduction of 25.8% comparing with preoperative period. There was a significant reduction in anteroposterior and mediolateral diameters in the immediate postoperative period (P<0.001), although there was a significant increase in mediolateral diameter between immediate postoperative period and 1 year. There was no difference in mitral internal area variation over the cardiac cycle during the study.

Conclusion: Segmentar annuloplasty reduced the posterior component of mitral annulus, which remained stable in a 1-year-period. The variation in mitral annulus area during cardiac cycle remained stable during the study.

No MeSH data available.


Related in: MedlinePlus

Evolution of the medial-lateral diameter of the mitral valve annulus during thestudy.Values =mean±standard deviation.*P<0.05 compared to the immediate postoperative period.
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f07: Evolution of the medial-lateral diameter of the mitral valve annulus during thestudy.Values =mean±standard deviation.*P<0.05 compared to the immediate postoperative period.

Mentions: Mediolateral (ML) diameter of the mitral annulus in the preoperative, immediatepost-operative, 6 months and 1 year period were 3.26±1.22cm, 2.87±1.19cm;2.84±1.19cm and 2.98±0.17cm, respectively. Significant effect of conditionevaluation was observed during the study period (P<0.001). At theend of the study, there was a decrease of 8.6% in the ML diameter of the mitral annuluswhen comparing the averages of the preoperative period. Figure 7 shows the evolution of the ML diameter the mitral valve annulusduring the study. When comparing the preoperative and IPO period, There was evidenced asignificant reduction in the average of this variable (P<0.001).When comparing the IPO and 6 months period, a slight further reduction of 1.0% wasobserved in the ML diameter, statistically significant (P=0.003). Thecomparison between the means of IPO and 1 year period showed an increase in measures ofthis variable by 3.8%, statistically significant (P=0.004).


Mitral annulus morphologic and functional analysis using real time tridimensional echocardiography in patients submitted to unsupported mitral valve repair.

Guedes MA, Pomerantzeff PM, Brandão CM, Vieira ML, Tarasoutchi F, Spinola Pda C, Jatene FB - Rev Bras Cir Cardiovasc (2015 Jul-Sep)

Evolution of the medial-lateral diameter of the mitral valve annulus during thestudy.Values =mean±standard deviation.*P<0.05 compared to the immediate postoperative period.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4541779&req=5

f07: Evolution of the medial-lateral diameter of the mitral valve annulus during thestudy.Values =mean±standard deviation.*P<0.05 compared to the immediate postoperative period.
Mentions: Mediolateral (ML) diameter of the mitral annulus in the preoperative, immediatepost-operative, 6 months and 1 year period were 3.26±1.22cm, 2.87±1.19cm;2.84±1.19cm and 2.98±0.17cm, respectively. Significant effect of conditionevaluation was observed during the study period (P<0.001). At theend of the study, there was a decrease of 8.6% in the ML diameter of the mitral annuluswhen comparing the averages of the preoperative period. Figure 7 shows the evolution of the ML diameter the mitral valve annulusduring the study. When comparing the preoperative and IPO period, There was evidenced asignificant reduction in the average of this variable (P<0.001).When comparing the IPO and 6 months period, a slight further reduction of 1.0% wasobserved in the ML diameter, statistically significant (P=0.003). Thecomparison between the means of IPO and 1 year period showed an increase in measures ofthis variable by 3.8%, statistically significant (P=0.004).

Bottom Line: Posterior mitral annulus demonstrated a significant reduction in immediate postoperative period (P<0.001), remaining stable during the study, and presents a mean of reduction of 25.8% comparing with preoperative period.There was a significant reduction in anteroposterior and mediolateral diameters in the immediate postoperative period (P<0.001), although there was a significant increase in mediolateral diameter between immediate postoperative period and 1 year.Segmentar annuloplasty reduced the posterior component of mitral annulus, which remained stable in a 1-year-period.

View Article: PubMed Central - PubMed

Affiliation: Instituto do Coração do Hospital das Clínicas, Faculdade de Medicina, USP, São Paulo, SP, BR.

ABSTRACT

Introduction: Mitral valve repair is the treatment of choice to correct mitral insufficiency, although the literature related to mitral valve annulus behavior after mitral repair without use of prosthetic rings is scarce.

Objective: To analyze mitral annulus morphology and function using real time tridimensional echocardiography in individuals submitted to mitral valve repair with Double Teflon technique.

Methods: Fourteen patients with mitral valve insufficiency secondary to mixomatous degeneration that were submitted to mitral valve repair with the Double Teflon technique were included. Thirteen patients were in FC III/IV. Patients were evaluated in preoperative period, immediate postoperative period, 6 months and 1 year after mitral repair. Statistical analysis was made by repeated measures ANOVA test and was considered statistically significant P<0.05.

Results: There were no deaths, reoperation due to valve dysfunction, thromboembolism or endocarditis during the study. Posterior mitral annulus demonstrated a significant reduction in immediate postoperative period (P<0.001), remaining stable during the study, and presents a mean of reduction of 25.8% comparing with preoperative period. There was a significant reduction in anteroposterior and mediolateral diameters in the immediate postoperative period (P<0.001), although there was a significant increase in mediolateral diameter between immediate postoperative period and 1 year. There was no difference in mitral internal area variation over the cardiac cycle during the study.

Conclusion: Segmentar annuloplasty reduced the posterior component of mitral annulus, which remained stable in a 1-year-period. The variation in mitral annulus area during cardiac cycle remained stable during the study.

No MeSH data available.


Related in: MedlinePlus