Jonathan N. Johnson
Mayo Clinic
QT intervalInternal medicineSurgeryCardiologyRetrospective cohort studyIntensive care medicinePediatricsVentricular tachycardiaHeart failureCardiomyopathyHeart transplantationDuchenne muscular dystrophyLong QT syndromeHeart diseaseHypertrophic cardiomyopathyPopulationTransplantationAnesthesiaMedicineCohortEjection fraction
Publications 164
#1Talha NiazH-Index: 8
#2Jonathan N. Johnson (Mayo Clinic)H-Index: 30
Last. Donald J. Hagler (Mayo Clinic)H-Index: 89
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1. Talha Niaz, MBBS* 2. Jonathan N. Johnson, MD*,† 3. Frank Cetta, MD*,† 4. Timothy M. Olson, MD*,† 5. Donald J. Hagler, MD*,† 1. *Division of Pediatric Cardiology, Department of Pediatric and Adolescent Medicine, and 2. †Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN * Abbreviations: AHA : : American Heart Association BAV : : bicuspid aortic valve TTE : : transthoracic echocardiography Bicuspid aortic valve is the most common congenital heart defect in children, adolescents, ...
#1Nowell M. Fine (U of C: University of Calgary)H-Index: 22
#1Nowell FineH-Index: 9
Last. Jonathan N. Johnson (Mayo Clinic)H-Index: 30
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ABSTRACT Background Cardiac allograft vasculopathy (CAV) is an important adverse prognostic factor for pediatric heart transplant (HT) recipients. Invasive coronary angiography (ICA) is the gold standard for CAV detection but lacks sensitivity for early microvascular changes and cumulative radiation exposure is of concern. Real-time myocardial contrast echocardiography (RTMCE) using ultrasound enhancing (contrast) agents performed during dobutamine stress echocardiography (DSE) can assess myocar...
#1Victor Y Levy (TTUHSC: Texas Tech University Health Sciences Center)H-Index: 1
#2Shazia Bhombal (Stanford University)H-Index: 7
Last. John M. Costello (MUSC: Medical University of South Carolina)H-Index: 18
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While outcomes for neonates with congenital heart disease have improved, it is apparent that substantial variability exists among centers with regard to the multidisciplinary approach to care for this medically fragile patient population. We endeavored to understand the landscape of neonatal cardiac care in the United States. A survey was distributed to physicians who provide neonatal cardiac care in the United States regarding (1) collaborative efforts in care of neonates with congenital heart ...
1 CitationsSource
#1Editt N Taslakian (University of Washington Medical Center)
#2Chung-Il Wi (Mayo Clinic)H-Index: 3
Last. Bong Seok Choi (KNU: Kyungpook National University)
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To assess the longitudinal incidence of Kawasaki disease (KD) within the well-defined predominantly White population of Olmsted County, MN. This retrospective cohort study used a population-based medical record linkage system and manual chart reviews to identify children with KD in Olmsted County, MN between January 1, 1979-December 31, 2016. Age- and gender-adjusted incidence rates were calculated using the 2010 U.S. White population. 124 children with KD were confirmed during the study period ...
#1Kari A. Phillips (Mayo Clinic)H-Index: 3
#2Joseph A. Dearani (Mayo Clinic)H-Index: 95
Last. Charlotte S. Van Dorn (Mayo Clinic)H-Index: 5
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Introduction: Ebstein anomaly (EA) is a rare congenital heart defect characterized by abnormalities of the tricuspid valve (TV) leaflets and right ventricular (RV) cardiomyopathy. The current treatment for most patients with EA is cone reconstruction (CR) surgery. However, timing of repair has been highly variable, ranging from infancy to adulthood. Historically, surgical intervention for EA in the presence of severe RV failure has been associated with a longer intensive care unit course, increa...
#1Muhammad Yasir Qureshi (Mayo Clinic)H-Index: 10
#2Marc C. Patterson (Mayo Clinic)H-Index: 40
Last. Ralitza H. Gavrilova (Mayo Clinic)H-Index: 15
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BACKGROUND (+)-Epicatechin (EPI) induces mitochondrial biogenesis and antioxidant metabolism in muscle fibers and neurons. We aimed to evaluate safety and efficacy of (+)-EPI in pediatric subjects with Friedreich's Ataxia (FRDA). METHODS This was a Phase II, open-label, baseline-controlled single-center trial including ten participants ages 10-22 with confirmed FA diagnosis. (+)-EPI was administered orally at 75 mg/day for 24 weeks, with escalation to 150 mg/day at 12 weeks for subjects not show...
2 CitationsSource
#1Juan Villafane (Cincinnati Children's Hospital Medical Center)
#2Jacob R. Miller (WashU: Washington University in St. Louis)H-Index: 11
Last. Devyani ChowdhuryH-Index: 12
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In the very young child (less than eight years of age), transient loss of consciousness represents a diagnostic and management dilemma for clinicians. While most commonly benign, syncope may be due to cardiac dysfunction which can be life-threatening. It can be secondary to an underlying ion channelopathy, cardiac inflammation, cardiac ischemia, congenital heart disease, cardiomyopathy, or pulmonary hypertension. Patients with genetic disorders require careful evaluation for a cardiac cause of s...
#1Talha Niaz (Mayo Clinic)H-Index: 8
#2Kyle D. Hope (BCM: Baylor College of Medicine)H-Index: 3
Last. Devyani ChowdhuryH-Index: 12
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Coronavirus disease 2019 (COVID-19) has affected patients across all age groups, with a wide range of illness severity from asymptomatic carriers to severe multi-organ dysfunction and death. Although early reports have shown that younger age groups experience less severe disease than older adults, our understanding of this phenomenon is in continuous evolution. Recently, a severe multisystem inflammatory syndrome in children (MIS-C), with active or recent COVID-19 infection, has been increasingl...
2 CitationsSource