open access

Ahead of Print
ORIGINAL ARTICLES
Published online: 2019-05-28
Submitted: 2019-04-02
Accepted: 2019-05-22
Get Citation

Morphometric study of the left atrial appendage related to closure device deployment: A cadaveric study in Thai population

Maethas Panyawongkhanit, Pimpika Fuktongphan, Vilai Chentanez
DOI: 10.5603/FM.a2019.0066
·
Pubmed: 31162625

open access

Ahead of Print
ORIGINAL ARTICLES
Published online: 2019-05-28
Submitted: 2019-04-02
Accepted: 2019-05-22

Abstract

This study aims to investigate the left atrial appendage (LAA) regarding external morphology, positional relation of the ostium of LAA to the left superior pulmonary vein (LSPV), ostium shape, ostium diameter and functional depth. LAA of sixty-five cadaveric hearts were examined. The prevalence of Cauliflower, Windsock, Cactus and Chicken wing type of LAA were 27.7%, 27.7%, 26.1% and 18.5% respectively. LAA with two lobes was the most common. All specimens showed no accessory LAA. The relation of the ostium to the LSPV was found in two types which were mid-type (LAA ostium was at the same level as LSPV) in 29 cases (44.6%) and inferior type (LAA ostium was below the level of LSPV) in 36 cases (55.4%). The shapes of LAA ostium were oval and round with a prevalence of 55.4% and 44.6% respectively. The diameter of round type ranged from 9.53- 21.51 mm with a mean of 14.56±2.6 mm. While in oval type, the long and short diameters ranged from 11.61-31.71 mm with a mean of 14.23 ± 4.2 mm and 6.70- 23.90mm with a meanof 11.66 ± 3.5mm, respectively. The surface area of the ostiumwas calculated from the ostium diameter, range from 71.29-594.92 mm2with a mean of 169.56±84.73 mm2. There was no statistically significant difference of the surface area between LAA types. The mean functional depth of LAA was 11.57±4.43 mm. The functional depth of the Windsock-type appeared to be statistically significant from the others. However, there was no correlation between the functionaldepth and the ostium surface area. This morphometric data might be beneficial for deployment of LAA closure device in the Thai population.

Abstract

This study aims to investigate the left atrial appendage (LAA) regarding external morphology, positional relation of the ostium of LAA to the left superior pulmonary vein (LSPV), ostium shape, ostium diameter and functional depth. LAA of sixty-five cadaveric hearts were examined. The prevalence of Cauliflower, Windsock, Cactus and Chicken wing type of LAA were 27.7%, 27.7%, 26.1% and 18.5% respectively. LAA with two lobes was the most common. All specimens showed no accessory LAA. The relation of the ostium to the LSPV was found in two types which were mid-type (LAA ostium was at the same level as LSPV) in 29 cases (44.6%) and inferior type (LAA ostium was below the level of LSPV) in 36 cases (55.4%). The shapes of LAA ostium were oval and round with a prevalence of 55.4% and 44.6% respectively. The diameter of round type ranged from 9.53- 21.51 mm with a mean of 14.56±2.6 mm. While in oval type, the long and short diameters ranged from 11.61-31.71 mm with a mean of 14.23 ± 4.2 mm and 6.70- 23.90mm with a meanof 11.66 ± 3.5mm, respectively. The surface area of the ostiumwas calculated from the ostium diameter, range from 71.29-594.92 mm2with a mean of 169.56±84.73 mm2. There was no statistically significant difference of the surface area between LAA types. The mean functional depth of LAA was 11.57±4.43 mm. The functional depth of the Windsock-type appeared to be statistically significant from the others. However, there was no correlation between the functionaldepth and the ostium surface area. This morphometric data might be beneficial for deployment of LAA closure device in the Thai population.

Get Citation

Keywords

functional depth of LAA, left atrial appendage, left atrial appendage closure, left superior pulmonary vein, ostium diameter, ostium shape, ostium surface area

About this article
Title

Morphometric study of the left atrial appendage related to closure device deployment: A cadaveric study in Thai population

Journal

Folia Morphologica

Issue

Ahead of Print

Published online

2019-05-28

DOI

10.5603/FM.a2019.0066

Pubmed

31162625

Keywords

functional depth of LAA
left atrial appendage
left atrial appendage closure
left superior pulmonary vein
ostium diameter
ostium shape
ostium surface area

Authors

Maethas Panyawongkhanit
Pimpika Fuktongphan
Vilai Chentanez

Important: This website uses cookies. More >>

The cookies allow us to identify your computer and find out details about your last visit. They remembering whether you've visited the site before, so that you remain logged in - or to help us work out how many new website visitors we get each month. Most internet browsers accept cookies automatically, but you can change the settings of your browser to erase cookies or prevent automatic acceptance if you prefer.

By  "Via Medica sp. z o.o." sp.k., Świętokrzyska 73, 80–180 Gdańsk, Poland

tel.:+48 58 320 94 94, faks:+48 58 320 94 60, e-mail:  viamedica@viamedica.pl