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Charitha Reddy, MD

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Specialties

Cardiology

Work and Education

Professional Education

University of California at Irvine School of Medicine Registrar, Irvine, CA, 6/11/2011

Residency

Childrens Hospital Los Angeles Pediatric Residency, Los Angeles, CA, 06/30/2014

Fellowship

Lucile Packard Childrens Hospital Advanced Cardiology Fellowships, Palo Alto, CA, 06/30/2018

Stanford University Pediatric Cardiology Fellowship, Palo Alto, CA, 06/30/2017

Board Certifications

Pediatric Cardiology, American Board of Pediatrics

Pediatrics, American Board of Pediatrics

All Publications

50 is the new 70: Short ventriculoatrial times are common in children with atrioventricular reciprocating tachycardia. Heart rhythm Ceresnak, S. R., Doan, L. N., Motonaga, K. S., Avasarala, K., Trela, A. V., Reddy, C. D., Dubin, A. M. 2015; 12 (7): 1541-1547

Abstract

One of the basic electrophysiological principles of atrioventricular reciprocating tachycardia (AVRT) is that ventriculoatrial (VA) times during tachycardia are >70 ms. We hypothesized, however, that children may commonly have VA times <70 ms in AVRT.This study sought to determine the incidence and characteristics associated with short-VA AVRT in children.A retrospective single-center review of children with AVRT from 2000 to 2014 was performed. All patients 18 years of age with AVRT at electrophysiology study were included. Patients with persistent junctional reciprocating tachycardia, atrioventricular nodal reentry tachycardia, and tachycardia not unequivocally proven to be AVRT were excluded. VA time was defined as the time between earliest ventricular activation and earliest atrial activation in any lead and was confirmed by 2 electrophysiologists. Patients with VA times <70 ms (SHORT-VA) and those with standard VA times 70 ms (STD-VA) were compared. Logistic regression analysis identified characteristics of SHORT-VA patients.A total of 495 patients with AVRT were included (mean age 11.7 4.1 years). There were 265 patients (54%) with concealed accessory pathways (APs) and 230 (46%) with Wolff-Parkinson-White syndrome. AP location was left-sided in 301 patients (61%) and right-sided in 194 (39%). The mean VA time in AVRT was 100 33 ms. A total of 63 patients (13%) had VA times <70 ms (SHORT-VA). The shortest VA time during AVRT was 50 ms. There was no difference in age, AV nodal block cycle, or body surface area between SHORT-VA and STD-VA patients, but SHORT-VA patients had lower weight (43 17 vs 51 23 kg, P = .02), lower AV nodal effective refractory period (AVNERP; 269 50 vs 245 52 ms, P < .01), and more left-sided APs (50 [79%] vs 251 [58%]; P < .01]. On multivariate logistic regression, factors associated with SHORT-VA included left-sided AP (odds ratio [OR] 5.79, confidence interval [95% CI] 2.21-15.1, P < .01), shorter AVNERP (OR 0.99, CI 0.98-0.99, P < .01), and lower weight (OR 0.97, CI 0.95-0.99, P < .01).Children with AVRT can frequently have VA times <70 ms, with 50 ms being the shortest VA time. This finding debunks the classic electrophysiology principle that VA times in AVRT must be >70 ms. SHORT-VA AVRT was more common in children with left-sided APs.

View details for DOI 10.1016/j.hrthm.2015.03.047

View details for PubMedID 25828598

Testosterone concentrations in early pregnancy: relation to method of conception in an infertile population REPRODUCTIVE BIOMEDICINE ONLINE Lathi, R. B., Moayeri, S. E., Reddy, C. D., Gebhardt, J., Behr, B., Westphal, L. M. 2012; 24 (3): 360-363

Abstract

This prospective cohort study of infertility patients compared testosterone concentrations in early pregnancy in infertility patients who conceived naturally or after treatment. Although all groups demonstrated some increase in pregnancy testosterone from baseline concentrations, subjects who conceived following ovulation induction showed a significantly increased rise in testosterone as compared with controls (P<0.01).

View details for DOI 10.1016/j.rbmo.2011.11.018

View details for PubMedID 22285241