Karla Veronica Chavez Tostado

Dr. Karla Veronica Chavez Tostado

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Research Focus & Metrics

Academic Career Length

10Years (2017-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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4 October 2017 in Updates in Surgery
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Journal Article
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KTKarla Veronica Chavez Tostado
Karla Veronica Chavez Tostado
HMHoracio Márquez-González
Horacio Márquez-González
IAItzé Aguirre
Itzé Aguirre
JOJuan C. Orellana
Juan C. Orellana

28 June 2021 in Frontiers in Surgery
Verified
Journal Article
Open access
KTKarla Veronica Chavez Tostado
Karla Veronica Chavez Tostado
HMHoracio Márquez-González
Horacio Márquez-González
MCMariana Chavez-Tostado
Mariana Chavez-Tostado
Introduction: Secondary hyperparathyroidism (SHPT) is a multisystemic syndrome that affects calcium and bone homeostasis in patients with chronic kidney disease (CKD). Despite medical treatment, 1–2% of patients require parathyroidectomy annually. The use of an intraoperative parathormone protocol (IOPTH) to predict cure is still in debate, due to the lack of standardized protocols, the use of different assays, and uneven PTH clearance. This study aimed to determine the diagnostic accuracy of an IOPTH in patients with SHPT for predicting successful surgery after parathyroidectomy.Methods: About 30 patients were enrolled. A prospective observational study (cohort) was performed in patients who were submitted to parathyroidectomy by an endocrine surgeon for SHPT. All were submitted to a bilateral neck exploration with a subtotal parathyroidectomy. Three IOPTH determinations were withdrawn: at anesthetic induction (PTH0), 15 min (PTH15), and 30 min (PTH30) after completion of gland resection. Another sample was taken 24 h after the procedure (PTH24), values 90% at 30 min was the most significant factor [Odds Ratio (OR) 3.0 (1.5–4) IC 95%].Conclusions: This study points toward a stricter and staggered IOPTH protocol to predict a successful surgery. Our results suggest taking a PTH15 expecting a PTH drop of >90%. If this is not achieved, reexploration and a PTH30 sample are suggested to accurately predict success.

18 January 2022 in General Thoracic and Cardiovascular Surgery
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Journal Article
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KTKarla Veronica Chavez Tostado
Karla Veronica Chavez Tostado
APAdriana Simoneta Pimienta-Ibarra
Adriana Simoneta Pimienta-Ibarra
HMHoracio Máruquez-González
Horacio Máruquez-González
JFJuan Carlos Flores-Garcés
Juan Carlos Flores-Garcés
EPErica Sagrario Peña-Mirabal
Erica Sagrario Peña-Mirabal
FBFrancina Valezka Bolaños-Morales
Francina Valezka Bolaños-Morales

4 April 2024 in Journal of Cardiothoracic Surgery
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Journal Article
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CVChavez Karla Veronica
Chavez Karla Veronica
KTKarla Veronica Chavez Tostado
Karla Veronica Chavez Tostado
PGPeña-Rivera Adriana Graciela
Peña-Rivera Adriana Graciela
CGCervantes-Perez Gabino
Cervantes-Perez Gabino
BVBolaños-Morales Francina Valezka
Bolaños-Morales Francina Valezka
Hyperparathyroidism (HPT) is a disease caused by hypersecretion of one or more parathyroid glands, it can be associated with ectopic mediastinal parathyroid glands (MEPA) in 2% of cases. The use of video-assisted thoracoscopic surgery (VATS) for the surgical resection of these glands is a safe, cost-effective, and low morbidity option for patients with MEPA. We report a case series of patients with this disease managed with VATS, the first in Mexico and Latinamerica. From 2008 to 2022, a retrospective study involving patients with MEPA and treated by VATS approach was performed in a tertiary hospital in Mexico city. Relevant biochemical and clinical variables such as imaging studies, pre and postoperative laboratory results, surgical strategy, outcomes and pathological analysis were analyzed. Four cases of mediastinal parathyroid adenomas causing HPT were included. All patients were female with a median age of 52.5 years-old (range 46–59 years), half of the patients had primary HPT and the others tertiary HPT after kidney transplant. 75% of cases had a MEPA in the medium mediastinum, all had a preoperative positive SPECT-CT 99mTc Sestamibi scan. Mean preoperative PTH was 621.3pg/mL (182-1382pg/mL). All patients successfully underwent parathyroidectomy with a VATS approach, no deaths were reported. VATS is a minimally invasive surgery that provides adequate access to mediastinal located glands, optimal visualization of mediastinal structures and has a high resection success rate with less complications and morbidity than open approaches.

26 February 2025 in Journal of Clinical Medicine
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Journal Article
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GCGabino Cervantes-Guevara
Gabino Cervantes-Guevara
BVBlanca Ernestina Vázquez-López
Blanca Ernestina Vázquez-López
LMLisset Citlalic Magaña
Lisset Citlalic Magaña
FSFernanda Monserrat Rendón Serrano
Fernanda Monserrat Rendón Serrano
CFClotilde Fuentes-Orozco
Clotilde Fuentes-Orozco
Mariana Chávez-TostadoMariana Chávez-Tostado
Mariana Chávez-Tostado
Introduction: Malnutrition is a critical issue among cancer patients, leading to adverse clinical outcomes, including increased treatment toxicity, reduced physical function, and decreased survival. Nutritional screening is essential to identify patients at risk and provide timely interventions. Objectives: This study aimed to assess the effectiveness of various nutritional screening tools in identifying the risk of malnutrition and obesity in Mexican cancer outpatients. Methods: A cross-sectional study was conducted with 396 adult cancer outpatients at a public hospital in Mexico. Nutritional risk was evaluated using NRS-2002, MUST, MST, NUTRISCORE, and PG-SGA, while malnutrition was assessed using GLIM criteria and PG-SGA. Anthropometric and demographic data were collected. Sensitivity, specificity, and kappa coefficients were calculated to determine the performance of the screening tools. Results: Nutritional risk was identified in 22.7–26.5% of patients, with the highest agreement observed between MUST and PG-SGA (k = 0.64). Malnutrition prevalence was higher using GLIM criteria (37.4%) compared to PG-SGA (25.8%, p < 0.001). Overweight and obesity affected 37.1% and 23.5% of patients, respectively. Low BMI and reduced HGS were strongly associated with nutritional risk and malnutrition (p < 0.001). Conclusions: MUST and PG-SGA are reliable tools for nutritional screening in cancer outpatients, while GLIM criteria detect a higher prevalence of malnutrition than PG-SGA. The high rates of overweight and obesity highlight the complex nutritional challenges in this population, emphasizing the need for tailored nutritional assessments and interventions.

19 July 2023 in Medicina
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Journal Article
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Mariana Chávez-TostadoMariana Chávez-Tostado
Mariana Chávez-Tostado
KTKarla Veronica Chavez Tostado
Karla Veronica Chavez Tostado
GCGabino Cervantes-Guevara
Gabino Cervantes-Guevara
GCGuillermo A. Cervantes-Cardona
Guillermo A. Cervantes-Cardona
DHDiana Mercedes Hernandez-Corona
Diana Mercedes Hernandez-Corona
AGAlejandro González-Ojeda
Alejandro González-Ojeda
Background: Breastfeeding is a characteristic process of mammals that ensures delivery of an adequate nutritional supply to infants. It is the gold standard food source during an infant’s first months of life. Since the onset of the COVID-19 pandemic in 2020, people in quarantine have experienced a wide range of feelings, which may make isolation challenging in terms of maternal health. This study focused on the prevalence of breastfeeding practices and postpartum depression (PPD) among Mexican women during the COVID-19 pandemic. Materials and Methods: This cross-sectional study included 586 postpartum women who completed an online survey 4−8 weeks after delivery from April to December 2020 in Guadalajara, Mexico. The aim was to identify potentially depressed mothers according to the Edinburgh Postnatal Depression Scale (EPDS) and describe their breastfeeding practices. Results: The mean maternal age was 30.4 ± 4.6 years, the mean EPDS score was 9.6 ± 5.0, and the PPD prevalence according EPDS scores was 27.1%. Exclusive breastfeeding (EBF) was reported by 32.3% of mothers in the first 48 h and by 70.3% of mothers 48 h after delivery. EBF was associated with a lower prevalence of PPD during the first 48 h (p = 0.015) and after the first 48 h (p = 0.001) after delivery. Skin-to-skin contact (SSC) was reported by 385 (65.7%) mothers. PPD was less frequent in mothers practicing SSC (20.3%) than it was in those not practicing SSC (40.3%) (p = 0.001). A higher percentage of mothers practiced SSC breastfed (66.9%) and used EBF (150, 79.4%) (p = 0.012 and 0.001, respectively). Conclusions: Results suggest that the pandemic emergency and restrictions imposed on the population significantly affected the well-being of mothers after birth, and that these effects may have posed risks to the mental health and emotional stability of postpartum mothers. Therefore, encouraging BF or EBF and SSC may improve or limit depressive symptoms in postpartum mothers.