Ana Marcella Rivas

ORCID: 0000-0003-2241-467X
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About
Contact & Profiles
Research Areas
  • Pituitary Gland Disorders and Treatments
  • Thyroid Disorders and Treatments
  • Thyroid Cancer Diagnosis and Treatment
  • Ion channel regulation and function
  • Neuroendocrine Tumor Research Advances
  • Growth Hormone and Insulin-like Growth Factors
  • Thyroid and Parathyroid Surgery
  • Adrenal and Paraganglionic Tumors
  • Neuroblastoma Research and Treatments
  • Liver Disease Diagnosis and Treatment
  • Nosocomial Infections in ICU
  • Lipid metabolism and disorders
  • Gestational Trophoblastic Disease Studies
  • Liver Diseases and Immunity
  • Sexual Differentiation and Disorders
  • Testicular diseases and treatments
  • Alkaline Phosphatase Research Studies
  • Cardiac electrophysiology and arrhythmias
  • Pancreatic and Hepatic Oncology Research
  • Pharmacology and Obesity Treatment
  • Rabies epidemiology and control
  • Restraint-Related Deaths
  • Takotsubo Cardiomyopathy and Associated Phenomena
  • Obstructive Sleep Apnea Research
  • Head and Neck Surgical Oncology

Texas Tech University
2013-2020

Texas Tech University Health Sciences Center
2013-2020

University of Colorado Anschutz Medical Campus
2017

Mayo Clinic in Florida
2016-2017

WinnMed
2017

Christiana Care Health System
2017

Creighton University
2017

The association between hypothyroidism and sleep apnea (SA) has been studied, but results are conflicting based mostly on small studies.To determine whether there is a positive SA in the US population.Cross-sectional study.US National Health Nutrition Examination Survey, 2007-2008.We included all subjects ≥18 years old who met inclusion criteria. Participants not antithyroid medication with TSH >5.6 mIU/L those thyroid hormone replacement regardless of were categorized as hypothyroid. or had...

10.1210/jc.2019-01132 article EN The Journal of Clinical Endocrinology & Metabolism 2019-07-15

The syndrome of impaired sensitivity to thyroid hormone, also known as hormone resistance, is an inherited condition that occurs in 1 40,000 live births characterized by a reduced responsiveness target tissues due mutations on the receptor. Patients can present with symptoms hyperthyroidism or hypothyroidism. They usually have elevated hormones and normal thyroid-stimulating level. Due their nonspecific symptomatic presentation, these patients be misdiagnosed if primary care physician not...

10.1080/08998280.2016.11929421 article EN Baylor University Medical Center Proceedings 2016-04-01

The authors' institution-a safety net, university, and tertiary-care hospital located in West Texas-has a high number of admissions for complicated thyrotoxicosis. It was hypothesized that unfavorable socioeconomic conditions result increased risk poor outcomes hyperthyroid patients, rates hospitalization thyrotoxicosis Texas. primary aim this study to identify factors associated with admission patients living the Panhandle Llano Estacado Texas.A retrospective chart review aged ≥18 years...

10.1089/thy.2018.0353 article EN Thyroid 2018-12-07

AbstractWe describe a 26-year-old man with metastatic choriocarcinoma who presented hyperthyroidism associated elevated β-human chorionic gonadotropin (B-HCG) and respiratory failure secondary to diffuse lung metastasis. After the first cycle of chemotherapy, concentration B-HCG dramatically decreased patient became euthyroid, allowing us discontinue antithyroid medications. The patient's was caused by stimulation thyroid gland high levels, as shown marked improvement function panel after...

10.1080/08998280.2016.11929353 article EN Baylor University Medical Center Proceedings 2016-01-01

A 32-year-old man presented with agitation, headache, and confusion. He was immunocompetent had been living multiple cats for many years. His vital signs were stable. afebrile. Multiple blood tests did not show any serious problem. Brain magnetic resonance imaging (MRI) revealed ring-enhancing white matter lesions. Cerebrospinal fluid analysis of infection. Based on a presumptive diagnosis sclerosis, high-dose corticosteroid treatment started. However, this caused worsening the symptoms...

10.7759/cureus.1103 article EN Cureus 2017-03-19

We aimed to evaluate changes in thyroid gland size during the treatment of malignancies outside head and neck with chemotherapy and/or external beam radiation. performed a retrospective review records adult patients treated at our institution radiation chest taxanes, alkylating agents, topoisomerase II inhibitor. Neck computed tomography (CT) images were used calculate volume before after therapy, using Vitrea® software or volumetric ellipsoid method. Thirty-seven included. After treatment,...

10.1080/08998280.2020.1786227 article EN Baylor University Medical Center Proceedings 2020-07-21

The standard treatment of complicated thyrotoxicosis and thyroid storm with the concomitant use antithyroid medication, iodine, beta-blockers, corticosteroids is successful in most cases. However, options are limited when antithyroidal drugs cannot be used or cases that refractory to treatment. Plasmapheresis provides a safe effective strategy initial fails, facilitating transition definitive treatments such as thyroidectomy. We present two adults successfully treated plasmapheresis bridge...

10.1080/08998280.2020.1852007 article EN Baylor University Medical Center Proceedings 2020-12-14

Acute necrotizing esophagitis, also known as "black esophagus," is typically characterized by a circumferential, friable black mucosal surface and preferentially involves the distal esophagus. It predominantly affects elderly men presents an upper gastrointestinal bleed. We describe 60-year-old man with acute bleed sepsis subsequently esophagitis.

10.1080/08998280.2018.1488494 article EN Baylor University Medical Center Proceedings 2018-09-28

Pneumocephalus (PNC) is a rare complication of transsphenoidal surgery that can result from cerebrospinal fluid (CSF) leak, allowing air entry into the CSF. We report case 49-year-old female patient who presented to emergency department three weeks after pituitary tumor resection, with symptoms generalized throbbing headache associated nausea. The was alert and oriented without any focal neurological deficit. A head computed tomography (CT) scan showed in subarachnoid space ventricles. She...

10.7759/cureus.3104 article EN Cureus 2018-08-05

Objective Hypertension can cause significant morbidity and reduced life expectancy. Most patients with hypertension have primary hypertension; however, 10% to 15% secondary hypertension. Endocrine disorders as a occur in approximately of hypertension, thyroid account for 1% all The identification hyperthyroidism has important benefits these particular patients. objective this study was examine the occurrence high blood pressure hyperthyroidism. Methods We reviewed clinical information...

10.14423/smj.0000000000001186 article EN Southern Medical Journal 2020-12-01

The aim of this cross-sectional study was to estimate the frequency and prevalence obesity its association with diabetes mellitus, systemic hypertension, hyperlipidemia, coronary artery disease, myocardial infarction, obstructive sleep apnea in West Texas adults. Data were extracted from 9528 clinic patients: 2287 (24.4%) normal weight or underweight, 7057 (75.5%) overweight obese (28.9% 46.6%, respectively). We observed a lower any degree men compared women (43.8% vs 48.6%). Diabetes...

10.1080/08998280.2019.1668667 article EN Baylor University Medical Center Proceedings 2019-10-14

The incidence of hypertriglyceridemia in acromegaly is three times higher than the normal population, and it most common dyslipidemia acromegaly. We present a case hypertriglyceridemic pancreatitis confirmed by imaging, with pancreatic enzymes. Hypertriglyceridemia this patient was likely secondary to appears be somatotrophic pituitary adenoma.

10.1080/08998280.2014.11929038 article EN Baylor University Medical Center Proceedings 2014-01-01
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