Melisa P Celaya

Interests

Research

Clinical Epidemiology of Obesity and Comorbid Chronic DiseasesClinical Trial Design and Operational Management Implementation Science in Public Health

Teaching

UME, GME, Research Education

Courses

Scholarly Contributions

Journals/Publications

• Still, C., Wood, G., Benotti, P., Petrick, A., Gabrielsen, J., Strodel, W., Ibele, A., Seiler, J., Irving, B., Celaya, M., Blackstone, R., Gerhard, G., & Argyropoulos, G. (2024). Preoperative prediction of type 2 diabetes remission after Roux-en-Y gastric bypass surgery: a retrospective cohort study..
• Blackstone, R. P., & Cortés, M. C. (2022). Metabolic acuity score: effect on major complications after bariatric surgery. Surgery for obesity and related diseases : official journal of the American Society for Bariatric Surgery, 6(3), 267-73.
  More info

  Co-morbid conditions in obese patients contribute to the incidence and severity of major complications after bariatric surgery and significantly increase the cost of the procedure. Previous publications have validated the patient factors that increase the risk of mortality; however, it is currently a rare event. The development of a metabolic acuity score (MAS) to augment the body mass index might allow for accurate preoperative assessment and optimal treatment of patients. The present study has proposed a MAS for decreasing major complications.
• Blackstone, R. P., Cortes, M. C., Messer, L. B., & Engstrom, D. (2022). Psychological classification as a communication and management tool in obese patients undergoing bariatric surgery. Surgery for obesity and related diseases : official journal of the American Society for Bariatric Surgery, 6(3), 274-81.
  More info

  Psychological evaluations are used to ascertain patient suitability for bariatric surgery and to challenge their ability to comply with therapy. The modern paradigm of obesity includes a neurobiologic component working in parallel with the limbic system of appetite and reward. To achieve the goals of surgery, an evaluation of the psychological fitness of the patient is often included in the clinical pathway. We present a psychological classification system with the goal of integrating the psychological factors into patient treatment.
• Blackstone, R., Bunt, J. C., Cortés, M. C., & Sugerman, H. J. (2022). Type 2 diabetes after gastric bypass: remission in five models using HbA1c, fasting blood glucose, and medication status. Surgery for obesity and related diseases : official journal of the American Society for Bariatric Surgery, 8(5), 548-55.
  More info

  The remission rates of type 2 diabetes mellitus (T2DM) after Roux-en-Y gastric bypass (RYGB) vary according to the glycosylated hemoglobin A1c (HbA1c), fasting blood glucose (FG), and medication status. Our objectives were to describe remission using the American Diabetes Association standards for defining normoglycemia and to identify the factors related to the preoperative severity of T2DM that predict remission to normoglycemia, independent of weight loss, after RYGB. The setting was an urban not-for-profit community hospital.
• Celaya, M. P., Lee-Iannotti, J., Mashaqi, S., Rangan, P., Gozal, D., Quan, S. F., & Parthasarathy, S. (2021). Obstructive sleep apnea and COVID-19 clinical outcomes during hospitalization: a cohort study. Journal of Clinical Sleep Medicine, 17(11), 2197-2204. doi:10.5664/jcsm.9424
• Mashaqi, S., Lee-Iannotti, J., Rangan, P., Celaya, M. P., Gozal, D., Quan, S. F., & Parthasarathy, S. (2021). Obstructive sleep apnea and COVID-19 clinical outcomes during hospitalization: a cohort study. Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine, 17(11), 2197-2204.
  More info

  Obstructive sleep apnea (OSA) is an extremely common sleep disorder. A potential association between OSA and coronavirus disease 2019 (COVID-19) severity has been proposed on the basis of similar comorbid medical conditions associated with both OSA and COVID-19.
• Celaya, M. P. (2018). Emergency department volunteers: Defining the position and its effect on the patient experience. American Journal of Emergency Medicine.
• Samaddar, K. K., Samaddar, R. K., Heller, P. A., & Celaya, M. (2018). Emergency department volunteers: Defining the position and its effect on the patient experience. AMERICAN JOURNAL OF EMERGENCY MEDICINE, 36(8), 1513-1513.
• Samaddar, K. K., Samaddar, R. K., Heller, P. A., & Celaya, M. (2018). Emergency department volunteers: Defining the position and its effect on the patient experience. The American journal of emergency medicine, 36(8), 1513.
• Celaya, M. P. (2014). Feasibility of implementing a meditative movement intervention with bariatric patients. Applied Nursing Research.
• Celaya, M. P. (2014). Preoperative prediction of type 2 diabetes remission after Roux-en-Y gastric bypass surgery: A retrospective cohort study. The Lancet Diabetes and Endocrinology.
• Smith, L. L., Larkey, L., Celaya, M. C., & Blackstone, R. P. (2014). Feasibility of implementing a meditative movement intervention with bariatric patients. Applied nursing research : ANR, 27(4), 231-6.
  More info

  Successful interventions are needed to help improve obesity rates in the United States. Roughly two-thirds of adults in the United States are overweight, and almost one-third are obese. In 1991, the National Institutes of Health released a consensus statement endorsing bariatric surgery as the only means for sustainable weight loss for severely obese patients. However, approximately one-third of bariatric patients will experience significant post surgical weight gain.
• Still, C. D., Wood, G. C., Benotti, P., Petrick, A. T., Gabrielsen, J., Strodel, W. E., Ibele, A., Seiler, J., Irving, B. A., Celaya, M. P., Blackstone, R., Gerhard, G. S., & Argyropoulos, G. (2014). Preoperative prediction of type 2 diabetes remission after Roux-en-Y gastric bypass surgery: a retrospective cohort study. The lancet. Diabetes & endocrinology, 2(1), 38-45.
  More info

  About 60% of patients with type 2 diabetes achieve remission after Roux-en-Y gastric bypass (RYGB) surgery. No accurate method is available to preoperatively predict the probability of remission. Our goal was to develop a way to predict probability of diabetes remission after RYGB surgery on the basis of preoperative clinical criteria.
• Celaya, M. P. (2012). Type 2 diabetes after gastric bypass: remission in five models using HbA1c, fasting blood glucose, and medication status.. Surgery for obesity and related diseases : official journal of the American Society for Bariatric Surgery.
  More info

  BACKGROUND: The remission rates of type 2 diabetes mellitus (T2DM) after Roux-en-Y gastric bypass (RYGB) vary according to the glycosylated hemoglobin A1c (HbA1c), fasting blood glucose (FG), and medication status. Our objectives were to describe remission using the American Diabetes Association standards for defining normoglycemia and to identify the factors related to the preoperative severity of T2DM that predict remission to normoglycemia, independent of weight loss, after RYGB. The setting was an urban not-for-profit community hospital. METHODS: We performed a retrospective analysis of prospectively collected data from a cohort of 2275 patients who qualified for bariatric surgery (2001-2008). Five different models for defining remission (no diabetes medication and a FG
• Celaya, M. P. (2010). Psychological classification as a communication and management tool in obese patients undergoing bariatric surgery.. Surgery for obesity and related diseases : official journal of the American Society for Bariatric Surgery.
  More info

  BACKGROUND: Psychological evaluations are used to ascertain patient suitability for bariatric surgery and to challenge their ability to comply with therapy. The modern paradigm of obesity includes a neurobiologic component working in parallel with the limbic system of appetite and reward. To achieve the goals of surgery, an evaluation of the psychological fitness of the patient is often included in the clinical pathway. We present a psychological classification system with the goal of integrating the psychological factors into patient treatment. METHODS: All patients (Roux-en-Y gastric bypass, n = 1814; laparoscopic adjustable gastric banding, n = 589) were evaluated using psychological testing/interview and assigned to groups 1-4 before surgery. The group 1 patients (n = 788; 32.8%) did not necessitate intervention, group 2 (n = 1110; 46.2%) were requested to attend the support group, groups 3A (n = 394; 16.4%) and 3B (n = 111; 4.6%) required intervention to continue to surgery, and group 4 patients were not recommended for surgery. The main outcome measures, including complication, readmission, and reoperation rates, were analyzed for differences among the psychological groups. RESULTS: After comparing the outcome measures between each classification, no significant differences were found in the major complication rates, readmissions, reoperations, or length of stay among the groups. Groups 3A and 3B were able to achieve similar rates of success, despite their psychosocial impairment at the initial evaluation. CONCLUSION: The assignment of a psychological classification can facilitate bariatric team recognition of the unique psychological factors that affect the success of surgery. Assessing the patient's psychological composition and addressing potential psychosocial barriers before surgery can increase the positive long-term outcomes and reduce the incidence of complications after bariatric surgery.
• Celaya, M. P. (2009). Metabolic acuity score: effect on major complications after bariatric surgery.. Surgery for obesity and related diseases : official journal of the American Society for Bariatric Surgery.
  More info

  BACKGROUND: Co-morbid conditions in obese patients contribute to the incidence and severity of major complications after bariatric surgery and significantly increase the cost of the procedure. Previous publications have validated the patient factors that increase the risk of mortality; however, it is currently a rare event. The development of a metabolic acuity score (MAS) to augment the body mass index might allow for accurate preoperative assessment and optimal treatment of patients. The present study has proposed a MAS for decreasing major complications. METHODS: Prospectively collected outcomes of 2416 patients undergoing Roux-en-Y gastric bypass (n = 1821) or laparoscopic adjustable gastric banding (n = 595) in a community hospital were evaluated for the incidence of major complications, readmissions, and reoperations. Beginning in August of 2006, 1072 patients were divided into MAS groups of 1-4 according to age, body mass index, weight, history of deep vein thrombosis/pulmonary embolism, sleep apnea, diabetes, hypertension, immobility, heart disease, and psychological classification. The acuity groups were compared with each other and with 1344 patients who underwent treatment before the MAS was implemented. RESULTS: A significant decrease occurred in the readmission rates within 30 days after the MAS was put into practice (8.5% before MAS versus 1.7% after MAS, P

Proceedings Publications

• Ghai, M. B., Yang, J., Aponte-Pieras, J., Li, J., Bayoumi, M., Celaya, M. P., Zenhausern, F., & Wassef, W. (2023, October 2023).

  S107 A New Approach to Evaluating the Microbiome of the Pancreas

  . In American College of Gastroenterology, 118, S88-S89.
• Chan, S., Rangan, P., Celaya, M. P., Bocelli, L., & Wassef, W. (2021, October).

  S74 Pancreatitis Quality of Life Comparison in Patients With Chronic Pancreatitis

  . In The American Journal of Gastroenterology, 116, s32.

Presentations

• Celaya, M. P. (2023, February). Researcher Identity. Research Office for Medical Education Journal Club. Phoenix: UA College of Medicine - Phoenix.
• Celaya, M. P. (2023, November). Readiness + Mindfulness + Habit Stacking: A Pathway to Wellness for Patients with Obesity. Department of Medicine Grand Rounds. Phoenix: University of Arizona College of Medicine - Phoenix.
• Celaya, M. P. (2023, Spring). Nuts and Bolts of MedEd Research. o Academy of Medical Scholars (AMES). Tucson: UA College of Medicine - Tucson.

Poster Presentations

• Celaya, M. P., Mashaqi, S., Rangan, P., & Lee-Iannotti, J. (2023, October). Baseline Assessment of Behavioral Factors Related to Consciousness in Personal Transformation and Well-Being of Patients with Obstructive Sleep Apnea and Obesity. Harvard Consciousness- Science, Spirituality, and Social Impact Conference. Boston: Harvard.
• Chilukuri, P., Bergin, C., Celaya, M. P., & Omalley, C. W. (2023, October). SPLIT: An Innovative Approach to Residency Recruitment. Research Office for Medical Education (ROME) Forum. Phoenix: UA College of Medicine - Phoenix.
• Celaya, M. P., Dennis, L. K., Harris, R. B., Roe, D., & Foote, J. A. (2019, November). Prediction of Attrition From a Medical Weight Loss Intervention With Community Hospital Employees. Obesity Week 2019 - TOS.