Publications by authors named "Maroun Chedid"

Article Synopsis
  • The study aimed to analyze how negative social and behavioral factors (SBDH) affect health care usage among heart failure patients at a safety-net community hospital.
  • Out of 4,594 heart failure patients analyzed, 21% faced at least one adverse social or behavioral determinant, with a notable demographic skew towards younger Black males on Medicaid.
  • Those with adverse SBDH experienced higher rates of hospitalizations and emergency department visits, indicating that these factors are linked to increased healthcare usage and serve as independent predictors for hospital readmissions.
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Background: Tolvaptan is the only US Food and Drug Administration-approved drug to slow the progression of autosomal dominant polycystic kidney disease (ADPKD), but it requires strict clinical monitoring due to potential serious adverse events.

Objective: We aimed to share our experience in developing and implementing an electronic health record (EHR)-based application to monitor patients with ADPKD who were initiated on tolvaptan.

Methods: The application was developed in collaboration with clinical informatics professionals based on our clinical protocol with frequent laboratory test monitoring to detect early drug-related toxicity.

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Polymorphic ventricular tachycardia (PVT) and ventricular fibrillation (VF) are life-threatening complications of takotsubo syndrome (TTS). Data regarding risk factors for PVT/VF based on the TTS variant are lacking. This study aimed to identify demographic and clinical factors associated with PVT and VF in patients with TTS.

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Background: Balloon Tipped Temporary Pacemakers (BTTP) are the most used temporary pacemakers; however, they are associated with a risk of dislodgement and thromboembolism. Recently, Temporary Permanent Pacemakers (TPPM) have been increasingly used. Evidence of outcomes with TPPM compared to BTTP remains scarce.

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Background: Autosomal dominant polycystic kidney disease (ADPKD) presents with variable disease severity and progression. Advanced imaging biomarkers may provide insights into cystic and non-cystic processes leading to kidney failure in different age groups.

Methods: This pilot study included 39 ADPKD patients with kidney failure, stratified into three age groups (<46, 46-56, >56 years old).

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BACKGROUND Autosomal dominant polycystic kidney disease (ADPKD) is the leading genetic cause of kidney failure worldwide. It is characterized by cyst formation and growth, kidney parenchymal destruction, and complications including cyst infection, nephrolithiasis, cyst rupture, and cyst hemorrhage. Cyst bleeding is typically a self-limited event.

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ADPKD is caused by pathogenic variants in or , encoding polycystin-1 and -2 proteins. Polycystins are expressed in osteoblasts and chondrocytes in animal models, and loss of function is associated with low bone mineral density (BMD) and volume. However, it is unclear whether these variants impact bone strength in ADPKD patients.

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Introduction: Cardiovascular disease leads to high morbidity and mortality in patients with kidney failure. Autosomal Dominant Polycystic Kidney Disease (ADPKD) is a systemic disease with various cardiac abnormalities. Details on the cardiovascular profile of patients with ADPKD who are undergoing kidney transplantation (KT) and its progression are limited.

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Background: Autosomal dominant polycystic kidney disease (ADPKD) has phenotypic variability only partially explained by established biomarkers that do not readily assess pathologically important factors of inflammation and kidney fibrosis. We evaluated asymptomatic pyuria (AP), a surrogate marker of inflammation, as a biomarker for disease progression.

Methods: We performed a retrospective cohort study of adult patients with ADPKD.

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Rationale & Objective: Hereditary hypophosphatemic rickets with hypercalciuria (HHRH) is a rare monogenic disorder caused by pathogenic variants. HHRH is characterized by kidney phosphate wasting, hypophosphatemia, hypercalciuria, an elevated 1,25-dihydroxyvitamin D level, nephrocalcinosis, and urinary stone disease. Previously, we reported a 100% prevalence of kidney cysts in the related CYP24A1 deficiency.

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Introduction: Autosomal dominant polycystic kidney disease (ADPKD) is caused mainly by pathogenic variants in PKD1 or PKD2 encoding the polycystin-1 and -2 proteins. Polycystins have shown to have an essential role in cardiac development and function in animal models. In the current study, we describe the clinical association between ADPKD and congenital heart disease (CHD).

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Article Synopsis
  • Computed tomography coronary angiography (CTCA) shows a higher negative predictive value (NPV) for diagnosing coronary artery disease (CAD) compared to stress echocardiography (SE), indicating it’s more reliable for ruling out the disease.
  • The study analyzed patients who underwent SE and CTCA, finding that a combination of normal SE and a zero calcium score (CTCS) achieved a 100% NPV for obstructive CAD and 92% for any CAD across different cohorts.
  • The results suggest that CTCS enhances risk assessment, particularly in low-risk patients, emphasizing its value in detecting and quantifying coronary artery calcification.
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