Selected publications from PubMed
The Future of Obesity Care: Exploring Synergies Between Metabolic Bariatric Surgery, Interventional Endoscopy and Pharmacotherapy.
Brown WA, Sumithran P, Cowley M, Cohen R, Le Roux C, Schauer P, Agarwal S, Ard J, Boza C, Cargiuolo JL, Ceccarelli L, Coverdale J, Dunkin B, Finucane F, Gupta K, Kaplan LM, Kurian M, Lingvay I, Miras A, Pearlman C, Petry T, Pournaras D, Purnell J, Ruiz R, Schiavon C, Tahrani A, Tarek H, Tomaszewski J, Tumik S, Younes R
Obes Surg. 2026 Jun;36(6):3326-3337 doi: 10.1007/s11695-026-08692-4.
Cardiometabolic Surgery for Treatment of Hypertension.
Schiavon CA, Drager LF
Curr Hypertens Rep. 2026 Jan 8;28(1):8 doi: 10.1007/s11906-025-01355-2.
Gut Microbiota Composition and Arterial Hypertension Improvement Post-Roux-en-Y Gastric Bypass: GATEWAY Trial Sub-Analysis After 5 Years.
Bersch-Ferreira ÂC, Fonseca DC, Tramujas L, Schiavon CA, Nakagawa Santos RH, V Machado RH, Biasi Cavalcanti A, Marcadenti A
Obes Surg. 2025 Dec;35(12):5346-5356 doi: 10.1007/s11695-025-08355-w.
Paired Comment Regarding Early Successful Experiences of Surgical Conversion of Endoscopic Gastric Plication to Roux-en-Y gastric Bypass.
Schiavon CA
Obes Surg. 2024 Jul;34(7):2291-2292 doi: 10.1007/s11695-024-07272-8.
Randomized Trial of Effect of Bariatric Surgery on Blood Pressure After 5 Years.
Schiavon CA, Cavalcanti AB, Oliveira JD, Machado RHV, Santucci EV, Santos RN, Oliveira JS, Damiani LP, Junqueira D, Halpern H, Monteiro FLJ, Noujaim PM, Cohen RV, de Sousa MG, Bortolotto LA, Berwanger O, Drager LF
J Am Coll Cardiol. 2024 Feb 13;83(6):637-648 doi: 10.1016/j.jacc.2023.11.032.
The three sides of the tale about gastroesophageal reflux and sleeve gastrectomy: yours, mine and the truth, Conversion from SG to RYGBP and Panel discussion & closing remarks.
With Johnson & Johnson MedTech
Published
Jan 2023
The main aspects of nutrition when managing patients who have undergone SG and RYGB are presented. Pre-surgery screening: Vitamin D and calcium have Grade A recommendation for screening as deficiency can be as high as 90%. Vitamin B12 has Grade B recommendation for screening as deficiency can be as high as 2-18% and 6-30% for patients taking PPIs. Folic Acid and Iron have Grade B recommendation for screening as deficiency can be as high as 54% and 45%, respectively. Thiamin, Vitamins A, E, K, zinc and copper have a grade C or D recommendation and should be considered on a case by case basis. Signs and symptoms: Dry and wet beriberi are early signs of Thiamin deficiency. Wernicke’s encephalopathy and Wernicke-Korsakoff syndrome are advanced and more serious signs of this deficiency. Pernicious anemia, numbness and paresthesia in extremities, ataxia, changes in reflexes, Light-headedness or vertigo, shortness of breath, tinnitus and palpitations are early signs of B12 deficiency. Angina and symptoms of congestive failure and altered mental status are advanced signs of this deficiency. Fatigue, microcytic anemia, glossitis and dysphagia, spoon-shaped nails and palpitations are signs of iron deficiency. Screening: Screening should be individualized, but as a rule, it should be conducted every 3-6 months in the first year and annually thereafter. Nutrition: Protein ingestion should be individualized. Carbohydrates, mainly complex ones, should constitute 50% of the daily caloric intake. Fat, mainly unsaturated fats, should constitute 20-35% of the daily caloric intake. RYGB and SG show differences in micronutrient deficiencies after surgery, but supplementation should be provided in both procedures. Multivitamin plus minerals including at least Vitamins B1, B9, B12, A, D, E and K and, Minerals Iron, Calcium, Zinc and Cooper. B12 and D should be supplemented in addition to the multivitamin. Female patients of childbearing age should receive iron and folic acid. Endorsed by: [Image]
With Johnson & Johnson MedTech
Published
May 2021
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