Patients with ventricular tachyarrhythmias exhibit a number of abnormalities that must coexist in order for the arrhythmia to become manifest. The """"""""late potentials"""""""" detected by the signal averaged electrocardiogram represent the substrate for reentrant type ventricular arrhythmias. Given the appropriate substrate, changes in autonomic tone may serve as the triggers for inititation of ventricular arrhythmias. To date, no studies have systematically examined the effects of autonomic activity on """"""""late potenitals."""""""" Our preliminary data show that B- adrenergic stimulation with epinephrine infusion prolongs the QRS duration, presumably related to conduction slowing. Because myocardial infarction may lead to autonomic denervation in the surviving myocardium adjacent to the infarction, resulting in supersensitivity of this tissue to catecholamines, B-adrenergic stimulation with epinephrine might be expected to have a more pronounced effect on late potentials which arise from this area. Our data also suggest that the end diastolic volume affects the QRS duration. This protocol is designed to comprehensively evaluate a variety of factors (autonomic tone, left ventricular end diastolic volume and systolic function, heart rate, serum potassium, and blood pressure) that may affect the signal averaged electrocardiogram and late potentials.
| Sherenian, Michael G; Singh, Anne M; Arguelles, Lester et al. (2018) Association of food allergy and decreased lung function in children and young adults with asthma. Ann Allergy Asthma Immunol 121:588-593.e1 |
| Baron, Kelly Glazer; Reid, Kathryn J; Malkani, Roneil G et al. (2017) Sleep Variability Among Older Adults With Insomnia: Associations With Sleep Quality and Cardiometabolic Disease Risk. Behav Sleep Med 15:144-157 |
| Makhija, Melanie M; Robison, Rachel G; Caruso, Deanna et al. (2016) Patterns of allergen sensitization and self-reported allergic disease in parents of food allergic children. Ann Allergy Asthma Immunol 117:382-386.e1 |
| Gupta, Ruchi S; Walkner, Madeline M; Greenhawt, Matthew et al. (2016) Food Allergy Sensitization and Presentation in Siblings of Food Allergic Children. J Allergy Clin Immunol Pract 4:956-62 |
| Raghanti, Mary Ann; Edler, Melissa K; Stephenson, Alexa R et al. (2016) Human-specific increase of dopaminergic innervation in a striatal region associated with speech and language: A comparative analysis of the primate basal ganglia. J Comp Neurol 524:2117-29 |
| Slama, Laurence; Jacobson, Lisa P; Li, Xiuhong et al. (2016) Longitudinal Changes Over 10 Years in Free Testosterone Among HIV-Infected and HIV-Uninfected Men. J Acquir Immune Defic Syndr 71:57-64 |
| Ye, Wen; Rosenthal, Philip; Magee, John C et al. (2015) Factors Determining ?-Bilirubin Levels in Infants With Biliary Atresia. J Pediatr Gastroenterol Nutr 60:659-63 |
| Arroyo-Ávila, Mariangelí; Santiago-Casas, Yesenia; McGwin Jr, Gerald et al. (2015) Clinical associations of anti-Smith antibodies in PROFILE: a multi-ethnic lupus cohort. Clin Rheumatol 34:1217-23 |
| Nodzenski, Michael; Muehlbauer, Michael J; Bain, James R et al. (2014) Metabomxtr: an R package for mixture-model analysis of non-targeted metabolomics data. Bioinformatics 30:3287-8 |
| Scholtens, Denise M; Muehlbauer, Michael J; Daya, Natalie R et al. (2014) Metabolomics reveals broad-scale metabolic perturbations in hyperglycemic mothers during pregnancy. Diabetes Care 37:158-66 |
Showing the most recent 10 out of 189 publications
