Publications by authors named "Sayah D"

Aspiration is one of many risk factors for chronic lung allograft dysfunction, which continues to limit survival in lung transplant recipients. Oropharyngeal dysphagia (OPD) occurring after lung transplant surgery increases the risk of antegrade aspiration. While the incidence and risk factors for OPD have been well described in cardiac surgery, there is less known in the lung transplant population.

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We present a patient with a history of lung transplantation who subsequently underwent dual heart-kidney transplantation for nonischemic cardiomyopathy and chronic kidney disease, becoming one of the rare cases of triple-organ transplantation. This case underscores the evolving challenges and successes in managing complex transplant recipients.

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Purpose: To assess the relationship between the pulsatile choroidal volume change (ΔV) and ocular rigidity (OR), an important biomechanical property of the eye.

Design: This is a prospective cross-sectional study.

Subjects: Two hundred seventeen participants (235 eyes) were included in this study.

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Purpose: Visual prognosis and treatment burden for macular neovascularization (MNV) can differ between myopic macular degeneration (MMD) and age-related macular degeneration (AMD). We describe and compare MNV associated with MMD and AMD using swept-source (SS)-OCTA.

Patients And Methods: Adult patients with documented MNV associated with MMD or AMD were consecutively recruited.

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Background/aims: We sought to evaluate widefield swept-source optical coherence tomography angiography (WF SS-OCTA) among eyes with concomitant age-related macular degeneration (AMD) and diabetes mellitus or diabetic retinopathy (DM/DR).

Methods: This cross-sectional, comparative study consisted of three study groups: eyes with (1) AMD and DM/DR, (2) AMD alone and (3) DM/DR alone. WF SS-OCTA (3×3, 6×6 and 12×12 mm) images were captured.

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Background: Ex-situ lung perfusion (ESLP) can be used to assess and rehabilitate donor lungs, potentially expanding the donor pool. We examined the characteristics and outcomes of lung transplants performed with ESLP in the United States.

Methods: Retrospective review of the United Network for Organ Sharing registry of primary adult lung transplant recipients from February 28, 2018, to June 30, 2021, was performed, comparing baseline characteristics, in-hospital outcomes, and 1-year survival of ESLP vs no ESLP lung transplants.

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Purpose: To evaluate the relationship between contrast sensitivity (CS) and widefield swept-source optical coherence tomography angiography (WF SS-OCTA) vascular metrics in diabetic macular edema (DME) was the purpose.

Methods: This prospectively enrolled cross-sectional observational study included 61 eyes of 48 patients that were tested with the quantitative CS function (qCSF) test on the same day as imaging with WF SS-OCTA (PLEX® Elite 9000, Carl Zeiss Meditec) 3 × 3, 6 × 6, and 12 × 12 mm scans. Outcomes included visual acuity (VA) and multiple qCSF metrics.

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Background: As lung transplantation (LT) expands to older recipients, objective approaches to evaluate the aging are needed to optimize posttransplantation outcomes. Frailty assessment and sarcopenia have shown promise as tools for predicting clinical outcomes.

Methods: Patients older than 55 years undergoing evaluation for LT were enrolled in an institutional review board-approved study.

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Article Synopsis
  • Lung transplantation can save lives for patients with serious lung diseases, but complications like primary graft dysfunction (PGD) limit outcomes.
  • A study analyzing samples from the first day after transplant found that certain immune indicators (NKG2D ligands) were linked to severe PGD and poorer recovery metrics.
  • The research suggests that targeting the immune response, specifically NKG2D receptors, could help manage PGD and improve patient outcomes.
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Ocular rigidity (OR) is an important biomechanical parameter of the eye accounting for the material and geometrical properties of the corneoscleral shell. This study used a literature search to review the role of ocular rigidity and the application of potential therapies targeting this parameter in glaucoma and myopia. Biomechanical modeling and improved understanding of the biochemistry, and molecular arrangement of sclera and its constituents have yielded important insights.

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Introduction: Transbronchial lung cryobiopsy (TBLC) has emerged as a promising alternative to surgical lung biopsy for the diagnosis of interstitial lung disease. However, uncertainty remains regarding its overall complications due to a lack of procedural standardization including the size of cryoprobe utilized.

Methods: This is a prospective cohort study of a protocolized transbronchial cryobiopsy program utilizing a 2.

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Background: The COVID-19 pandemic has caused significant morbidity and mortality in solid organ transplant (SOT) recipients. However, it remains unclear whether the risk factor for SOT patients is the immunosuppression inherent to transplantation versus patient comorbidities.

Methods: We reviewed outcomes in a cohort of SOT (n = 129) and non-SOT (NSOT) patients (n = 708) admitted to the University of California, Los Angeles for COVID-19 infection.

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The medical care of patients awaiting lung transplantation is complex and requires the treatment of active medical conditions, including lung disease, while at the same time maintaining candidacy for transplantation. Some medications that would otherwise be considered routine may create undesirable challenges or complications in the perioperative setting. Therefore, a comprehensive assessment of the risks and benefits of these medications must take into account both their potential utility in managing a patient's current disease state, as well as the risks of compromising postlung transplant outcomes.

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Objective: Evidence suggests that ocular blood flow dysregulation in patients with vasospasticity could occur in response to biomechanical stimuli, contributing to optic nerve head susceptibility in glaucoma. We evaluate the role of vasospasticity in the association between ocular rigidity (OR) and neuroretinal damage, hypothesizing that low OR correlates with greater glaucoma damage in patients with vasospasticity.

Design: Cross-sectional study.

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Background: Venovenous (VV) extracorporeal membrane oxygenation (ECMO) has been used as a bridge to lung transplantation with acceptable outcomes. We hypothesized that venoarterial (VA) ECMO, as part of a multidisciplinary ECMO program, yields similar outcomes as VV ECMO as a bridge in lung transplantation.

Methods: Records of all patients who had undergone ECMO with the intention to bridge to lung transplantation at University of California, Los Angeles, from January 1, 2012, to March 31, 2020, were reviewed.

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Background: Chronic lung allograft dysfunction (CLAD) phenotype determines prognosis and may have therapeutic implications. Despite the clarity achieved by recent consensus statement definitions, their reliance on radiologic interpretation introduces subjectivity. The Center for Computer Vision and Imaging Biomarkers at the University of California, Los Angeles (UCLA) has established protocols for chest high-resolution computed tomography (HRCT)-based computer-aided quantification of both interstitial disease and air-trapping.

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Despite the common detection of non-donor specific anti-HLA antibodies (non-DSAs) after lung transplantation, their clinical significance remains unclear. In this retrospective single-center cohort study of 325 lung transplant recipients, we evaluated the association between donor-specific HLA antibodies (DSAs) and non-DSAs with subsequent CLAD development. DSAs were detected in 30% of recipients and were associated with increased CLAD risk, with higher HRs for both de novo and high MFI (>5000) DSAs.

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Article Synopsis
  • - Sweet's Syndrome (SS) is an inflammatory skin condition characterized by the presence of neutrophils and is a type of neutrophilic dermatosis.
  • - There are fewer than 50 documented cases of respiratory complications related to SS, but this article discusses a unique case involving lung transplantation (LT).
  • - The study highlights the clinical journey of the first patient who underwent LT for pulmonary SS and suggests that the lung disease may recur in the transplanted organ.
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The association of autoimmune disease (AI) with transplant-free survival in the setting of Group 3 pulmonary hypertension and pulmonary fibrosis remains unclear. We report cases of severe pulmonary hypertension (mean pulmonary artery pressure ≥35 mmHg right ventricular dysfunction) and extensive pulmonary fibrosis after pulmonary arterial hypertension-specific therapy. We used multivariate regression to determine the clinical variables associated with transplant-free survival.

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Extrinsic compression of the left main coronary artery (LMCA) by a dilated pulmonary artery (PA) in the setting of pulmonary arterial hypertension (PAH) is an increasingly recognized disease entity. LMCA compression has been associated with angina, arrhythmia, heart failure, and sudden cardiac death in patients with PAH. Recent studies suggest that at least 6% of patients with PAH have significant LMCA compression.

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Purpose: Ocular rigidity (OR) is an important biomechanical property, thought to be relevant in the pathophysiology of open-angle glaucoma (OAG). This study aims to evaluate the relationship between OR and neuroretinal damage caused by glaucoma.

Methods: One hundred eight subjects (22 with healthy eyes, 23 with suspect discs, and 63 with OAG) were included in this study.

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Unlabelled: Telehealth platforms with remote phlebotomy and biomarker implementation represent a novel paradigm for surveillance after lung transplantation (LT). In a pilot study, we investigated donor-derived cell-free DNA (dd-cfDNA) in plasma using a clinical-grade "next-generation sequencing" assay.

Methods: dd-cfDNA levels determined in biorepository venous plasma samples obtained during the lung allograft rejection gene expression observation study, implementing a clinical-grade next-generation sequencing assay.

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Background/aims: To evaluate the non-invasive measurement of ocular rigidity (OR), an important biomechanical property of the eye, as a predictor of intraocular pressure (IOP) elevation after anti-vascular endothelial growth factor (anti-VEGF) intravitreal injection (IVI).

Methods: Subjects requiring IVI of anti-VEGF for a pre-existing retinal condition were enrolled in this prospective cross-sectional study. OR was assessed in 18 eyes of 18 participants by measurement of pulsatile choroidal volume change using video-rate optical coherence tomography, and pulsatile IOP change using dynamic contour tonometry.

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Retinopathy of prematurity (ROP) is the leading cause of blindness in neonates. Inflammation, in particular interleukin-1β (IL-1β), is increased in early stages of the disorder, and contributes to inner and outer retinal vasoobliteration in the oxygen-induced retinopathy (OIR) model of ROP. A small peptide antagonist of IL-1 receptor, composed of the amino acid sequence, rytvela, has been shown to exert beneficial anti-inflammatory effects without compromising immunovigilance-related NF-κB in reproductive tissues.

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