R. Calderón

ORCID: 0000-0002-7006-6844
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Transplantation: Methods and Outcomes
  • Cerebral Venous Sinus Thrombosis
  • Tracheal and airway disorders
  • Organ and Tissue Transplantation Research
  • Infective Endocarditis Diagnosis and Management
  • Aortic Thrombus and Embolism
  • Viral Infections and Immunology Research
  • Coronary Artery Anomalies
  • Infectious Aortic and Vascular Conditions
  • Receptor Mechanisms and Signaling
  • Congenital Heart Disease Studies
  • Liver Disease Diagnosis and Treatment
  • Autoimmune and Inflammatory Disorders
  • Retinal Imaging and Analysis
  • Hearing, Cochlea, Tinnitus, Genetics
  • Organ Transplantation Techniques and Outcomes
  • Kawasaki Disease and Coronary Complications
  • Cardiac Valve Diseases and Treatments
  • Wireless Power Transfer Systems
  • Inflammatory Bowel Disease
  • Hypothalamic control of reproductive hormones
  • Platelet Disorders and Treatments
  • Head and Neck Anomalies
  • Immunodeficiency and Autoimmune Disorders
  • Cardiovascular and Diving-Related Complications

Universidad Nacional Autónoma de México
2024

Methodist Hospital
2024

University of Maryland, Baltimore
2016

University of Maryland Medical Center
2016

University of Puerto Rico, Medical Sciences Campus
2014

National Institute on Deafness and Other Communication Disorders
2008

University of Puerto Rico System
1998-2006

Galveston College
1955

Anderson Hospital
1954

The mouse cochlea emerges from the ventral pole of otocyst to form a one and three-quarter coil. Little is known about factors that control growth cochlea. Jackson circler (<i>jc</i>) recessive mutation causing deafness resulting arrest duct at day 13.5 embryonic development. Here, we identify vertebrate homolog <i>Drosophila Sobp</i> (sine oculis-binding protein) gene (named <i>Jxc1</i>) in <i>jc</i> locus. <i>Jxc1</i> encodes nuclear protein has two FCS-type zinc finger domains (PS51024)...

10.1523/jneurosci.1280-08.2008 article EN Journal of Neuroscience 2008-06-25

Tomographic study of laryngeal paralysis has received little mention in the literature. Many articles have been written describing tomographic exploration physiology larynx during phonation (1–4, 6, 8, 9–13), but only Canuyt, Gunsett and Greiner (5) dealt with appearance paralyzed larynx. While it is true that vocal cords can be diagnosed easily by mirror examination, its description interest for several reasons. In first place, there are many patients on whom indirect laryngoscopy...

10.1148/63.3.407 article EN Radiology 1954-09-01

The tolerance of tissues to radiation is an inverse function the volume irradiated. Portals should be no larger than necessary cover tumor-bearing areas. widespread practice using four or even six 15 × l0-cm. portals in external irradiation carcinoma cervix with medium voltage (200 400 kv) irradiates a large tissue unnecessarily. Delivering high doses such areas increases incidence severe complications, and eventually lowers cure rate (2,7,12). availability multimillion-volt therapy renders...

10.1148/67.3.359 article EN Radiology 1956-09-01

Abstract Reproduction in all mammalian species depends on the growth and maturation of ovarian follicles, that is, folliculogenesis. Follicular development can culminate with rupture mature follicles consequent expulsion their oocytes (ovulation) or atresia, characterized by arrest eventual degeneration. These processes are regulated different neuroendocrine signals arising at hypothalamic nuclei, including suprachiasmatic nucleus (SCN). In later, activation muscarinic receptors (mAChRs)...

10.1111/jne.13421 article EN cc-by-nc-nd Journal of Neuroendocrinology 2024-06-03

Ventricular diverticula are a rare congenital cardiac disorder presenting with an extremely low incidence. The presence of apical diverticulum the right ventricle has been associated other heart diseases such as tetralogy Fallot. An important defining characteristic ventricular that separates them from aneurysms through imaging techniques, is they possess myocardial contraction synchronous to adjacent walls, contributing stroke volume, so do not usually require surgical treatment.

10.4330/wjc.v16.i12.760 article EN World Journal of Cardiology 2024-11-25

Resumen: La Enfermedad de Kawasaki (EK) es una vasculitis aguda, febril, sistemica, etiologia desconocida y que se presenta principalmente en ninos menores cinco (5) anos edad. Actualmente la principal causa cardiopatia adquirida infancia paises desarrollados. Objetivo: este trabajo conocer evolucion un grupo cuarenta (40) admitidos el Hospital del Nino Panama con diagnostico Kawasaki. Material Metodos: Estudio descriptivo serie casos EK entre junio 2011 abril 2014 Panama. Resultados: El...

10.37980/im.journal.rmdp.2015174 article EN Revista Médica de Panamá - ISSN 2412-642X 2015-10-08

Resumen El dolor precordial agudo es una patologia comun en ninos. Se presentan cien casos atendidos el Hospital del Nino consecutivamente. analiza su etiologia, diagnostico y tratamiento. propone un protocolo de manejo sencillo, facil seguimiento por los pacientes familiares. Colaboracion la Academia Panamena Medicina Cirugia e Infomedic International S,A. 2006-2013. Derechos reservados. www.revistasmedicas.org Etiology, diagnosis and treatment of chest pain ACUTE IN...

10.37980/im.journal.rmdp.2013110 article ES Revista Médica de Panamá - ISSN 2412-642X 2013-05-29

El diagnostico preciso y precoz de la insuficiencia cardiaca tiene cada vez mas importancia en cardiologia actual. Recientemente se ha descrito un nuevo metodo para el estudio funcion cardiaca, denominado indice Tei, que permite sistolica diastolica forma combinada puede ser aplicado ambos ventriculos. proposito este trabajo es analizar Tei conocer los valores ninos panamenos normales con cardiopatias. Colaboracion Academia Panamena Medicina Cirugia e Infomedic International S,A. 2006-2013....

10.37980/im.journal.rmdp.2012107 article ES Revista Médica de Panamá - ISSN 2412-642X 2012-01-01

A 25-year-old man with dilated cardiomyopathy and epilepsy presented to the emergency department because of sudden onset slurred speech weakness right-sided extremities. He had been diagnosed 5 months prior this incident, when he signs symptoms congestive heart failure a two-dimensional echocardiogram demonstrated global hypokinesia, severe mitral regurgitation, an estimated ejection fraction 20%. One month admission, apical thrombus, patient was started on warfarin. Initial examination...

10.1097/00042871-200701010-00541 article EN Journal of Investigative Medicine 2007-01-01

P637 Background: Heart transplantation is the best therapeutic option for patients with End Stage Failure refractory to medical therapy. The Cardiovascular Center of Puerto Rico and Caribbean was certified as a transplant center by UNOS in November 1998. first heart performed June 1999. Methods: Between 1999 March 2004, 54 have been performed. demographic these patients, pre-transplant clinical characteristics, post- outcomes were reviewed. Results: There 39 (72%) male 15 (28%) female...

10.1097/00007890-200407271-01133 article EN Transplantation 2004-07-01

<h3></h3> Coarctation of aorta is strongly asssociated with bicuspid aortic valves. This a risk factor for infective endocarditis. Aneurysm sinus Valsalva rare defect prevalence 0.09% and associated in 10% cases valves less frequently coarctation atrial septal defect. The association an rare. the first case reported Puerto Rico adult patient ruptured aneurysm 22 year old male diagnosed since childhood, who was admitted at Cardiovascular Center due to endocarditis secondary teeth infection...

10.2310/6650.2005.00006.80 article EN Journal of Investigative Medicine 2005-01-01
Coming Soon ...