Left Atrial Appendage Morphology in Patients with Suspected Cardiogenic Stroke without Known Atrial Fibrillation
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{"title"=>"Left atrial appendage morphology in patients with suspected cardiogenic stroke without known atrial fibrillation", "type"=>"journal", "authors"=>[{"first_name"=>"Miika", "last_name"=>"Korhonen", "scopus_author_id"=>"56247329500"}, {"first_name"=>"Antti", "last_name"=>"Muuronen", "scopus_author_id"=>"57154551200"}, {"first_name"=>"Otso", "last_name"=>"Arponen", "scopus_author_id"=>"56247282000"}, {"first_name"=>"Pirjo", "last_name"=>"Mustonen", "scopus_author_id"=>"36931000800"}, {"first_name"=>"Marja", "last_name"=>"Hedman", "scopus_author_id"=>"35743275900"}, {"first_name"=>"Pekka", "last_name"=>"Jäkälä", "scopus_author_id"=>"57196556584"}, {"first_name"=>"Ritva", "last_name"=>"Vanninen", "scopus_author_id"=>"7003680579"}, {"first_name"=>"Mikko", "last_name"=>"Taina", "scopus_author_id"=>"55994850100"}], "year"=>2015, "source"=>"PLoS ONE", "identifiers"=>{"issn"=>"19326203", "scopus"=>"2-s2.0-84930001219", "pui"=>"604166170", "doi"=>"10.1371/journal.pone.0118822", "isbn"=>"1932-6203 (Electronic)\\r1932-6203 (Linking)", "sgr"=>"84930001219", "pmid"=>"25751618"}, "id"=>"a60eb20e-b650-3ef6-83d6-63569ad55deb", "abstract"=>"The left atrial appendage (LAA) is the typical origin for intracardiac thrombus formation. Whether LAA morphology is associated with increased stroke/TIA risk is controversial and, if it does, which morphological type most predisposes to thrombus formation. We assessed LAA morphology in stroke patients with cryptogenic or suspected cardiogenic etiology and in age- and gender-matched healthy controls. LAA morphology and volume were analyzed by cardiac computed tomography in 111 patients (74 males; mean age 60 ± 11 years) with acute ischemic stroke of cryptogenic or suspected cardiogenic etiology other than known atrial fibrillation (AF). A subgroup of 40 patients was compared to an age- and gender-matched control group of 40 healthy individuals (21 males in each; mean age 54 ± 9 years). LAA was classified into four morphology types (Cactus, ChickenWing, WindSock, CauliFlower) modified with a quantitative qualifier. The proportions of LAA morphology types in the main stroke group, matched stroke subgroup, and control group were as follows: Cactus (9.0%, 5.0%, 20.0%), ChickenWing (23.4%, 37.5%, 10.0%), WindSock (47.7%, 35.0%, 67.5%), and CauliFlower (19.8%, 22.5%, 2.5%). The distribution of morphology types differed significantly (P<0.001) between the matched stroke subgroup and control group. The proportion of single-lobed LAA was significantly higher (P<0.001) in the matched stroke subgroup (55%) than the control group (6%). LAA volumes were significantly larger (P<0.001) in both stroke study groups compared to controls patients. To conclude, LAA morphology differed significantly between stroke patients and controls, and single-lobed LAAs were overrepresented and LAA volume was larger in patients with acute ischemic stroke of cryptogenic or suspected cardiogenic etiology.", "link"=>"http://www.mendeley.com/research/left-atrial-appendage-morphology-patients-suspected-cardiogenic-stroke-without-known-atrial-fibrilla", "reader_count"=>27, "reader_count_by_academic_status"=>{"Unspecified"=>1, "Librarian"=>1, "Student > Doctoral Student"=>5, "Researcher"=>4, "Student > Ph. D. Student"=>5, "Student > Postgraduate"=>3, "Student > Master"=>3, "Other"=>2, "Student > Bachelor"=>1, "Lecturer"=>1, "Professor"=>1}, "reader_count_by_user_role"=>{"Unspecified"=>1, "Librarian"=>1, "Student > Doctoral Student"=>5, "Researcher"=>4, "Student > Ph. D. Student"=>5, "Student > Postgraduate"=>3, "Student > Master"=>3, "Other"=>2, "Student > Bachelor"=>1, "Lecturer"=>1, "Professor"=>1}, "reader_count_by_subject_area"=>{"Engineering"=>3, "Unspecified"=>5, "Nursing and Health Professions"=>1, "Materials Science"=>1, "Agricultural and Biological Sciences"=>2, "Medicine and Dentistry"=>10, "Neuroscience"=>1, "Design"=>1, "Computer Science"=>3}, "reader_count_by_subdiscipline"=>{"Design"=>{"Design"=>1}, "Engineering"=>{"Engineering"=>3}, "Materials Science"=>{"Materials Science"=>1}, "Medicine and Dentistry"=>{"Medicine and Dentistry"=>10}, "Neuroscience"=>{"Neuroscience"=>1}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>2}, "Computer Science"=>{"Computer Science"=>3}, "Nursing and Health Professions"=>{"Nursing and Health Professions"=>1}, "Unspecified"=>{"Unspecified"=>5}}, "reader_count_by_country"=>{"Poland"=>1, "United Kingdom"=>1, "Italy"=>1, "Spain"=>1}, "group_count"=>5}

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Figshare

  • {"files"=>["https://ndownloader.figshare.com/files/1941877"], "description"=>"<p><sup>a</sup> According to LAA quantitative measurements: Cactus, ChickenWing, CauliFlower, WindSock</p><p><sup>b</sup> According to LAA external appearance: Cactus, ChickenWing, CauliFlower, WindSock</p><p><sup>c</sup> According to LAA tip orientation and external appearance: Horseshoe, Hand-finger, Fan, Wing, Hook, Wedge, Swan</p><p><sup>d</sup> According to LAA external appearance: Tube, Claw, Sphere-like, Tadpole, Willow-leaf, Sword, Duckbill, Irregular</p><p>AF = atrial fibrillation; ASD = atrial septal defect; CAD = coronary artery disease; cCT = cardiac CT; CT = computed tomography; CTA = CT angiography; LAA = left atrial appendage; MDCT = multidetector CT; MRI = magnetic resonance imaging; NA = not applicable; PAF = paroxysmal AF; SCI = silent cerebral ischemia; SD = standard deviation; TEE = transesophageal echocardiogram</p><p>Left Atrial Appendage (LAA) Morphology and Increased Stroke Risk in the Literature.</p>", "links"=>[], "tags"=>["LAA morphology", "morphology types", "cardiogenic etiology", "Ischemic stroke", "control group", "LAA morphology types", "intracardiac thrombus formation", "stroke patients", "stroke subgroup", "Left Atrial Appendage Morphology", "stroke study groups", "af"], "article_id"=>1330110, "categories"=>["Biological Sciences"], "users"=>["Miika Korhonen", "Antti Muuronen", "Otso Arponen", "Pirjo Mustonen", "Marja Hedman", "Pekka Jäkälä", "Ritva Vanninen", "Mikko Taina"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0118822.t003", "stats"=>{"downloads"=>2, "page_views"=>31, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Left_Atrial_Appendage_LAA_Morphology_and_Increased_Stroke_Risk_in_the_Literature_/1330110", "title"=>"Left Atrial Appendage (LAA) Morphology and Increased Stroke Risk in the Literature.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2015-03-09 14:45:27"}
  • {"files"=>["https://ndownloader.figshare.com/files/1941874"], "description"=>"<p>Prevalence of single-lobed LAA and multiple lobe (≥ 2) LAA in the three study groups.</p>", "links"=>[], "tags"=>["LAA morphology", "morphology types", "cardiogenic etiology", "Ischemic stroke", "control group", "LAA morphology types", "intracardiac thrombus formation", "stroke patients", "stroke subgroup", "Left Atrial Appendage Morphology", "stroke study groups", "af"], "article_id"=>1330107, "categories"=>["Biological Sciences"], "users"=>["Miika Korhonen", "Antti Muuronen", "Otso Arponen", "Pirjo Mustonen", "Marja Hedman", "Pekka Jäkälä", "Ritva Vanninen", "Mikko Taina"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0118822.g003", "stats"=>{"downloads"=>0, "page_views"=>12, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Prevalence_of_single_lobed_LAA_and_multiple_lobe_8805_2_LAA_in_the_three_study_groups_/1330107", "title"=>"Prevalence of single-lobed LAA and multiple lobe (≥ 2) LAA in the three study groups.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-03-09 14:45:27"}
  • {"files"=>["https://ndownloader.figshare.com/files/1941873"], "description"=>"<p>Prevalence of LAA morphologies among the three study groups.</p>", "links"=>[], "tags"=>["LAA morphology", "morphology types", "cardiogenic etiology", "Ischemic stroke", "control group", "LAA morphology types", "intracardiac thrombus formation", "stroke patients", "stroke subgroup", "Left Atrial Appendage Morphology", "stroke study groups", "af"], "article_id"=>1330106, "categories"=>["Biological Sciences"], "users"=>["Miika Korhonen", "Antti Muuronen", "Otso Arponen", "Pirjo Mustonen", "Marja Hedman", "Pekka Jäkälä", "Ritva Vanninen", "Mikko Taina"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0118822.g002", "stats"=>{"downloads"=>2, "page_views"=>8, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Prevalence_of_LAA_morphologies_among_the_three_study_groups_/1330106", "title"=>"Prevalence of LAA morphologies among the three study groups.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-03-09 14:45:27"}
  • {"files"=>["https://ndownloader.figshare.com/files/1941876"], "description"=>"<p>Note: Significance assessed using the Mann-Whitney U-test</p><p><sup>a</sup><i>P</i><0.05</p><p><sup>b</sup><i>P</i><0.001</p><p>SD = standard deviation</p><p>Comparison of Morphology-related Variables in Specific Left Atrial Appendage (LAA) Morphology Types in the Main Stroke Group (n = 111).</p>", "links"=>[], "tags"=>["LAA morphology", "morphology types", "cardiogenic etiology", "Ischemic stroke", "control group", "LAA morphology types", "intracardiac thrombus formation", "stroke patients", "stroke subgroup", "Left Atrial Appendage Morphology", "stroke study groups", "af"], "article_id"=>1330109, "categories"=>["Biological Sciences"], "users"=>["Miika Korhonen", "Antti Muuronen", "Otso Arponen", "Pirjo Mustonen", "Marja Hedman", "Pekka Jäkälä", "Ritva Vanninen", "Mikko Taina"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0118822.t002", "stats"=>{"downloads"=>4, "page_views"=>19, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Comparison_of_Morphology_related_Variables_in_Specific_Left_Atrial_Appendage_LAA_Morphology_Types_in_the_Main_Stroke_Group_n_111_/1330109", "title"=>"Comparison of Morphology-related Variables in Specific Left Atrial Appendage (LAA) Morphology Types in the Main Stroke Group (n = 111).", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2015-03-09 14:45:27"}
  • {"files"=>["https://ndownloader.figshare.com/files/1941875"], "description"=>"<p>Data are given as n (%) or mean ± SDAF = Atrial Fibrillation; AFl = Atrial Flutter; CT = Computed Tomography; ECG = Electrocardiography; NA = Not assessed; ns = not significant; TEE = Transesophageal echocardiogram</p><p><sup>a</sup> Statistical significance between matched stroke subgroup and control group</p><p><sup>b</sup> n = 109</p><p><sup>c</sup> n = 37</p><p><sup>d</sup> n = 79</p><p><sup>e</sup> n = 31</p><p><sup>f</sup> n = 98</p><p><sup>g</sup> n = 38</p><p><sup>h</sup> n = 90</p><p><sup>i</sup> n = 30</p><p>Clinical Characteristics of the Main Stroke Group (n = 111), the Matched Stroke Subgroup (n = 40) and Control Group (n = 40).</p>", "links"=>[], "tags"=>["LAA morphology", "morphology types", "cardiogenic etiology", "Ischemic stroke", "control group", "LAA morphology types", "intracardiac thrombus formation", "stroke patients", "stroke subgroup", "Left Atrial Appendage Morphology", "stroke study groups", "af"], "article_id"=>1330108, "categories"=>["Biological Sciences"], "users"=>["Miika Korhonen", "Antti Muuronen", "Otso Arponen", "Pirjo Mustonen", "Marja Hedman", "Pekka Jäkälä", "Ritva Vanninen", "Mikko Taina"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0118822.t001", "stats"=>{"downloads"=>0, "page_views"=>12, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Clinical_Characteristics_of_the_Main_Stroke_Group_n_111_the_Matched_Stroke_Subgroup_n_40_and_Control_Group_n_40_/1330108", "title"=>"Clinical Characteristics of the Main Stroke Group (n = 111), the Matched Stroke Subgroup (n = 40) and Control Group (n = 40).", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2015-03-09 14:45:27"}
  • {"files"=>["https://ndownloader.figshare.com/files/1941872"], "description"=>"<p>LAA length was measured from the orifice area (dashed orange line) to the farthest point of the LAA via the center of the main lobe. The bend angle was measured with an imaginary vertical line (red dashed line) and a line between the main lobe and the farthest point of the LAA. Cactus has a dominant central lobe, one or more secondary lobes, and total length less than 4 cm. ChickenWing has only one lobe, total length more than 4 cm, and a bend angle less than 100°. WindSock has one dominant lobe with several secondary, or even tertiary lobes, total length more than 4 cm, and a bend angle of over 100°. CauliFlower has a total length less than 4 cm and complex internal structures.</p>", "links"=>[], "tags"=>["LAA morphology", "morphology types", "cardiogenic etiology", "Ischemic stroke", "control group", "LAA morphology types", "intracardiac thrombus formation", "stroke patients", "stroke subgroup", "Left Atrial Appendage Morphology", "stroke study groups", "af"], "article_id"=>1330105, "categories"=>["Biological Sciences"], "users"=>["Miika Korhonen", "Antti Muuronen", "Otso Arponen", "Pirjo Mustonen", "Marja Hedman", "Pekka Jäkälä", "Ritva Vanninen", "Mikko Taina"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0118822.g001", "stats"=>{"downloads"=>7, "page_views"=>235, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_LAA_morphology_types_based_on_Wang_8217_s_classification_with_Kimura_8217_s_quantitative_limits_/1330105", "title"=>"LAA morphology types based on Wang’s classification with Kimura’s quantitative limits.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-03-09 14:45:27"}

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{"start_date"=>"2015-01-01T00:00:00Z", "end_date"=>"2015-12-31T00:00:00Z", "subject_areas"=>[]}
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