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  • Chen, Edward W  (3)
  • Dai, Xing  (3)
  • Goldstein, Eric D  (3)
  • Haines, Philip  (3)
  • Yaghi, Shadi  (3)
  • 2020-2024  (3)
Materialart
Person/Organisation
Sprache
Erscheinungszeitraum
  • 2020-2024  (3)
Jahr
Fachgebiete(RVK)
  • 1
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 54, No. Suppl_1 ( 2023-02)
    Kurzfassung: Recent studies have failed to reveal benefit of anticoagulation over antiplatelet therapy in the prevention of recurrent stroke in Embolic Stroke of Undetermined Source (ESUS) patients. This is attributed to significant heterogeneity in underlying mechanisms of ESUS. Atrial fibrillation (AF) is a potential cause of ESUS, and evaluating left atrial (LA) function by measuring LA strain by speckle tracking echocardiography (STE) is an emerging technique to assess LA biomechanics. Our study investigates the relationship between LA strain and AF detection in ESUS patients. We included hospitalized patients with ESUS subtype who underwent STE. LA function by assessing three phases of LA strain (reservoir, conduit and contractile) were retrospectively quantified and evaluated. Several patients were discharged with mobile cardiac telemetry that was retrospectively reviewed for AF detection. Descriptive statistical methods and both unadjusted and adjusted regression models were used. Among 325 ESUS patients, mean age was 66.5±15.0, 49% were male, 49% had outpatient cardiac monitoring, and 25% had AF detected. LA reservoir (25.17±13.4 vs 32.43±18.13), LA contractile (11.95±9.66 vs 16.67±10.94) and LA conduit (13.08±6.47 vs 17.20±12.21) strains were significantly lower in patients with AF detected compared to patients without AF detected. In the unadjusted binary logistic regression analysis, patients with AF detected had significantly lower LA reservoir (OR 0.967, 95% CI 0.941-0.994), LA contractile (OR 0.957, 95% CI 0.918-0.997) and LA conduit (OR 0.961, 95% CI 0.925-0.998) strains. This significance was lost after adjusting for age. Our study demonstrates that reduced LA strain is associated with subsequent detection of AF in ESUS patients. We believe that routine LA strain measurement can aid clinicians in identifying ESUS patients with high AF prevalence and thereby appropriately target patients for anticoagulation therapy to prevent subsequent strokes.
    Materialart: Online-Ressource
    ISSN: 0039-2499 , 1524-4628
    RVK:
    Sprache: Englisch
    Verlag: Ovid Technologies (Wolters Kluwer Health)
    Publikationsdatum: 2023
    ZDB Id: 1467823-8
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 2
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 54, No. Suppl_1 ( 2023-02)
    Kurzfassung: Introduction: Diastolic dysfunction, particularly with elevated left ventricle filling pressure (LVFP) is known to be a strong independent predictor of all-cause mortality and major cardiac events. There is limited data on the role of diastolic function in ischemic stroke. We hypothesize that diastolic dysfunction with elevated LVFP is more likely to be present in patients with Embolic stroke of undetermined source (ESUS) compared to non-cardioembolic stroke and is associated with AF on cardiac monitoring in the ESUS group. Methods: This is a single center retrospective study that included adult patients with a diagnosis of acute ischemic stroke from 2014 to 2016. We excluded patients with confirmed cardioembolic stroke and those with indeterminate diastolic function. ESUS was defined as no ipsilateral stenoses ≥ 50%, cardiac telemetry for at least two weeks without evidence of atrial fibrillation or atrial flutter, and a LVEF ≥ 30%. A transthoracic echocardiogram was performed and interpreted by cardiologists. Baseline patient characteristics and clinical variables were compared among patients with and without diastolic dysfunction. Potential associations between diastolic dysfunction, ESUS and AF detection in ESUS patients were assessed using logistic regression. Results: There were 509 patients, the mean age was 64.19, 54.81% were male, and 146 had LVFP data. Diastolic dysfunction overall was not associated with ESUS (adjusted OR 1.44, 95% CI 0.91-2.28, p = 0.125) or AF detection on cardiac monitoring (adjusted OR 1.87, 95% CI 0.75-4.70, p = 0.183). However, diastolic dysfunction and elevated LVFP was associated with ESUS subtype (adjusted OR 2.26, 95% CI 1.03-4.93, p = 0.041) and AF detection on cardiac monitoring (adjusted OR 3.58, 95% CI 1.07-12.01, p = 0.039). Conclusion: Our study suggests that diastolic dysfunction with elevated LVFP is associated with ESUS stroke subtype and AF detection on cardiac monitoring. Therefore, the presence of diastolic dysfunction with elevated LVFP may identify a population of stroke patients more likely to have ESUS, particularly in the setting of occult AF. Studies are needed to confirm our findings and test the safety and efficacy of anticoagulation in patients with ESUS and diastolic dysfunction with elevated LVFP.
    Materialart: Online-Ressource
    ISSN: 0039-2499 , 1524-4628
    RVK:
    Sprache: Englisch
    Verlag: Ovid Technologies (Wolters Kluwer Health)
    Publikationsdatum: 2023
    ZDB Id: 1467823-8
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 3
    In: Circulation, Ovid Technologies (Wolters Kluwer Health), Vol. 146, No. Suppl_1 ( 2022-11-08)
    Kurzfassung: Embolic stroke of undetermined source (ESUS) accounts for 20% of all ischemic strokes with at least 30% having biomarkers of atrial cardiopathy. Traditional parameters of left atrial (LA) structure and function (particularly Left Atrial Volume Index) are similar in ESUS and non-cardioembolic (NCE) stroke subtypes. LA strain measured by speckle tracking echocardiography (STE) is an emerging non-invasive technique to assess LA structure, function, and biomechanics. Our study evaluates whether LA strain differs between patients with ESUS and NCE and whether LA strain magnitude predicts diagnosis of atrial fibrillation (AF) in ESUS. Hospitalized patients with ESUS and NCE stroke subtypes who underwent in-hospital echocardiography were included. STE was performed, and three phases of LA strain (reservoir, conduit, and contractile) were measured. Binary logistic regression analyses were performed to determine the association between different phases of LA strain and stroke subtypes (ESUS vs NCE) as well as AF detection in ESUS patients. A total of 685 patients met the inclusion criteria. Mean age was 65 years; 55% were men; 49% of strokes were NCE; and 51% were ESUS. In patients with ESUS, 57% (189/330) underwent cardiac monitoring. AF was detected in 17.4% (33/189). In fully adjusted binary logistic regression analysis, patients with ESUS had lower LA reservoir strain (adjusted OR 0.99, 95% CI 0.98-0.99, p = 0.039) and LA contractile strain (adjusted OR 0.98, 95% CI 0.97-1.00, p = 0.089). Furthermore, lower LA reservoir strain was associated with AF detection in ESUS patients (OR 0.96, 95% CI 0.93-0.99, p = 0.028). In conclusion, all phases of LA strain were reduced in ESUS compared to NCE. This suggests the presence of atrial cardiopathy in ESUS stroke patients. Furthermore, atrial strain was significantly reduced in ESUS patients found to have AF. These findings may carry mechanistic significance in stroke development and AF detection in ESUS patients.
    Materialart: Online-Ressource
    ISSN: 0009-7322 , 1524-4539
    Sprache: Englisch
    Verlag: Ovid Technologies (Wolters Kluwer Health)
    Publikationsdatum: 2022
    ZDB Id: 1466401-X
    Standort Signatur Einschränkungen Verfügbarkeit
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