The Left Atrial Septal Pouch: A New Stroke Risk Factor?
Cryptogenic stroke
Inter-atrial septum
Ischemic stroke
Left atrial septal pouch
Transesophageal echocardiogram
Journal
Translational stroke research
ISSN: 1868-601X
Titre abrégé: Transl Stroke Res
Pays: United States
ID NLM: 101517297
Informations de publication
Date de publication:
04 2021
04 2021
Historique:
received:
21
04
2020
accepted:
16
09
2020
revised:
31
08
2020
pubmed:
5
1
2021
medline:
14
1
2022
entrez:
4
1
2021
Statut:
ppublish
Résumé
The left atrial septal pouch (LASP) occurs due to incomplete fusion of septa primum and secundum at the inter-atrial septum, creating an open flap that may serve as a thromboembolic source. Prior studies have demonstrated increased prevalence of LASP in cryptogenic strokes. The aim of the current study was to validate the above findings in a separate, larger group of stroke and non-stroke patients. We examined transesophageal echocardiograms (TEEs) performed between July 2011 and December 2018. LASP prevalence was determined in TEEs referred for ischemic stroke or transient ischemic attack ("stroke") and compared with LASP prevalence in patients undergoing TEEs for other reasons ("non-stroke"). Stroke subtyping was performed using the Trial of Org 10172 in Acute Stroke Treatment (TOAST) criteria. There were 306 TEEs from 144 non-stroke and 162 stroke patients. Mean age and sex distribution were 56 ± 1 (mean ± SE) and 65% male in the non-stroke group and 58 ± 1 and 54% male in the stroke group. The overall prevalence of LASP was 31%. The prevalence of LASP was 28% (41/144) in non-stroke patients, 25% (24/95) in non-cryptogenic stroke patients, and 43% (29/67) in cryptogenic stroke patients. LASP prevalence was significantly higher in the cryptogenic subgroup compared with the non-cryptogenic subgroup (p = 0.02). These findings demonstrate a significant association of LASP with risk of cryptogenic stroke, suggesting that LASP may serve as a thromboembolic nidus. Additional studies are needed to determine the generalizability of these findings, and their therapeutic implications, supporting LASP as a stroke risk factor.
Identifiants
pubmed: 33393056
doi: 10.1007/s12975-020-00864-3
pii: 10.1007/s12975-020-00864-3
pmc: PMC7925453
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
205-211Références
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