R. Pérez

ORCID: 0000-0003-2117-6286
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About
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Research Areas
  • Congenital Heart Disease Studies
  • Pregnancy and preeclampsia studies
  • Tracheal and airway disorders
  • Fetal and Pediatric Neurological Disorders
  • Congenital Diaphragmatic Hernia Studies
  • Cardiovascular Issues in Pregnancy
  • Prenatal Screening and Diagnostics
  • Assisted Reproductive Technology and Twin Pregnancy
  • Congenital Anomalies and Fetal Surgery
  • Urological Disorders and Treatments
  • Gestational Diabetes Research and Management
  • Birth, Development, and Health
  • Neonatal Respiratory Health Research
  • Ovarian cancer diagnosis and treatment
  • Infant Development and Preterm Care
  • Vascular anomalies and interventions
  • Adenosine and Purinergic Signaling
  • Retinal Imaging and Analysis
  • Stress Responses and Cortisol
  • CNS Lymphoma Diagnosis and Treatment
  • Intracranial Aneurysms: Treatment and Complications
  • Bartonella species infections research
  • Brain Metastases and Treatment
  • Parvovirus B19 Infection Studies
  • Rabies epidemiology and control

Hospital Clínico San Carlos
2025

Hospital General Universitario Gregorio Marañón
2004-2017

Universidad Complutense de Madrid
2013-2014

University of Puerto Rico System
2003

Hospital Universitari Germans Trias i Pujol
1996

Hôpital américain de paris
1980

Introduction: Type 2 Diabetes Mellitus (T2DM) causes insulin resistance and can lead to complications like Diabetic Retinopathy (DR), affecting vision. Optical Coherence Tomography (OCT) enables early detection. Objective: The study aimed compare neuroretinal alterations between patients with without evidence of (DR) a healthy control group. Methodology: included 220 eyes from 110 T2DM DR controls. Detailed interviews, comprehensive ophthalmologic evaluations, were used measure the thickness...

10.52379/mcs.v9.496 article EN cc-by Medicina Clínica y Social 2025-02-27

Abstract Objectives The main objective of this study was to determine whether fetal thymic measurements could be obtained in twins, with a secondary goal from uncomplicated singleton and twin pregnancies are comparable. Methods transverse diameter perimeter the thymus were measured prospectively 678 56 pregnancies, their relationships gestational age determined compared between groups. Results Thymic possible 757 (95.8%) 790 fetuses. Measurements not 19 singletons (2.8%) 14 112 (12.5%) twins...

10.1002/uog.7578 article EN Ultrasound in Obstetrics and Gynecology 2010-02-03

Bacillary angiomatosis (BA) is a recently discovered multisystem bacterial infectious disease seen in the setting of immune suppression due to human immunodeficiency virus (HIV). A case an HFV-infected patient with osteolytic bone involvement reported.

10.1093/rheumatology/35.9.901 article EN Lara D. Veeken 1996-01-01

To describe an extended algorithm CASSEAL for exploring the fetal cardiovascular system at level of abdomen and thorax by ultrasound (US) axial views features concerning its clinical application. was applied in a cross-sectional study on 429 singleton multiple gestations from second trimester attending our unit routine US examination or because suspected abnormality. Using common 5 to evaluate de heart (Yagel) as starting point, we extend exploration area caudally, adding 3 assess hepatic...

10.1002/uog.11240 article EN Ultrasound in Obstetrics and Gynecology 2012-09-01

Estudiar las caracteristicas clinicas, maternas y neonatales del conjunto de recien nacidos con edad gestacional ≤ 28 semanas en funcion sexo Del total 25.552 partos atendidos el Servicio Obstetricia Ginecologia Hospital General Universitario Gregorio Maranon, 322 (1,26%) tenian una durante periodo comprendido entre enero 1995 junio 2001. Se ha descartado a 46 ninos (14,3%) que habian muerto intrautero. Realizando estudio sobre 276 nacidos, se encontro 111 (40,8%) femenino 165 (59,2%)...

10.1016/s0304-5013(03)75919-6 article ES Progresos de Obstetricia y Ginecología 2003-01-01

The aim of this study was to evaluate the postnatal course fetal ovarian cysts in relation sonographic parameters. We retrospectively analysed pre and data 16 diagnosed 15 fetuses by transabdominal ultrasound. mean gestational age at diagnosis 33 weeks (range, 28 36 weeks). In 7 cases (47%) cyst on left side, right side one fetus (6%) had bilateral cysts. value for largest diameter 41 mm. 20 80 mm.). Eleven (69%) measured less than 50 Three (19%) increased size serial ultrasound follow-up...

10.1002/uog.2168 article EN Ultrasound in Obstetrics and Gynecology 2005-09-01

To make a comparison of the images in axial views obtained by fetal ultrasound (US) and magnetic resonance imaging (MRI) application Cardiovascular System Sonographic Evaluation Algorithm (CASSEAL). CASSEAL is an US algorithm based on acquisition 9 different abdomen chest, from umbilical vein to subclavian arteries, designed for deep assessment super extended cardiovascular system. Feasibility reproducibility have already been proved; however, its MRI has not established. We performed 25...

10.1002/uog.15541 article EN Ultrasound in Obstetrics and Gynecology 2015-09-01

To evaluate the diagnostic capability of CASSEAL in ultrasound detection congenital cardiovascular anomalies second trimester pregnancy. is an algorithm for exploring fetal super extended system and it based on acquisition 9 different axial views, from umbilical vein to subclavian arteries. was applied a cross-sectional study singleton/multiple gestations 19–22 weeks attending our unit routine US examination along 6 months period. When anomaly detected, affected views were registered....

10.1002/uog.15540 article EN Ultrasound in Obstetrics and Gynecology 2015-09-01

The abnormal anatomical origin of the right-subclavian artery (RSA) may be associated with an increased risk for aneuploidy and heart abnormalities (Zapata et al. 1993; Chaoui 2005; Borenstein 2010). In this study we sought to determine clinical utility antenatal evaluation. We performed 875 consecutive intended evaluations RSA using Chaoui's methodology. success rate investigation was 97% 7 aberrant cases detected (0.8%)(Figure 1). 2 seven (28.6%) another US abnormality found not either...

10.1002/uog.9292 article EN Ultrasound in Obstetrics and Gynecology 2011-09-14

Three sonographic shapes of the fetal main portal vein and sinus anastomosis have been described: T-in 68%; X-in 12%; H-in 15% cases (Yagel et al2010). We sought to examine extent which these variants could affect newborn weight. reviewed our antenatal ultrasound data base matched for gestational age 30-cases with each variant. Neonatal outcome variables were then ANOVA used make comparisons between groups. In table we summarize findings. The 3 types can be seen from 20 weeks gestation....

10.1002/uog.9377 article EN Ultrasound in Obstetrics and Gynecology 2011-09-14

To study the prevalence of fetal aberrant right subclavian artery (ARSA) in our population and its association with chromosomal congenital defects. A prospective was carried out between February 2011 March 2012 pregnant women attending Fetal Medicine Unit for routine ultrasound examination or because a suspected abnormality. The patients were evaluated presence ARSA following methodology transverse view described by Chaoui. Longitudinal coronal views acquired to complete diagnosis. All cases...

10.1002/uog.11348 article EN Ultrasound in Obstetrics and Gynecology 2012-09-01

The prenatal detection of the fetal aberrant right subclavian artery (ARSA) can be achieved by transverse, longitudinal and coronal views at thorax. objective is to describe frequency visualization ARSA in a view after its common axial plane. A series 25 fetuses which was diagnosed using transverse found group pregnant women (between 16–36 weeks pregnancy) attending our Fetal Medicine Unit for ultrasound examination (Figure 1A). After view, visualized sweeping probe level thorax plane...

10.1002/uog.12115 article EN Ultrasound in Obstetrics and Gynecology 2012-09-01
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