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Micronutrient and physiologic parameters before and 6 months after RYGB.
Surg Obes Relat Dis 2014 Sep-Oct; 10(5):944-51SO

Abstract

BACKGROUND

Bariatric surgery is considered an effective method for sustained weight loss, but may cause various nutritional complications. The aim of this study was to evaluate the nutritional status of minerals and vitamins, food consumption, and to monitor physiologic parameters in patients with obesity before and 6 months after Roux-en-Y gastric bypass surgery (RYGB).

METHODS

Thirty-six patients who had undergone RYGB were prospectively evaluated before and 6 months after surgery. At each phase their weight, height, body mass index (BMI), Electro Sensor Complex (ES Complex) data, food consumption, and total protein serum levels, albumin, prealbumin, parathyroid hormone (PTH), zinc (Zn), B12 vitamin (VitB12), iron (Fe), ferritin, copper (Cu), ionic calcium (CaI), magnesium (Mg), and folic acid were assessed.

RESULTS

The mean weight loss from baseline to 6 months after surgery was 35.34±4.82%. Markers of autonomic nervous system balance (P<.01), stiffness index (P<.01), standard deviation of normal-to-normal R-R intervals (SDNN) (P<.01), and insulin resistance (P<.001) were also improved. With regard to the micronutrients measured, 34 patients demonstrated some kind of deficiency. There was a high percentage of Zn deficiency in both pre- (55.55%) and postoperative (61.11%) patients, and 33.33% of the patients were deficient in prealbumin postoperatively. The protein intake after 6 months of surgery was below the recommended intake (<70 g/d) for 88.88% of the patients. Laboratory analyses demonstrated an average decrease in total protein (P<.05), prealbumin (P = .002), and PTH (P = .008) between pre- and postsurgery, and a decrease in the percentage of deficiencies for Mg (P<.05), CaI (P<.05), and Fe (P = .021).

CONCLUSION

Despite improvements in the autonomic nervous system balance, stiffness index markers and insulin resistance, we found a high prevalence of hypozincemia at 6 months post-RYGB. Furthermore, protein supplements were needed to maintain an adequate protein intake up to 6 months postsurgery.

Authors+Show Affiliations

Nutricionist Postgraduate in Nutrition in the Digestive System (UNICAMP), Campinas, São Paulo, Brazil; Faculdade de Ciências Médicas- Departamento de Cirurgia do Hospital de Clínicas UNICAMP, Campinas, São Paulo, Brazil. Electronic address: rcgobato@gmail.com.Laboratório de Nutrição e Metabolismo- Departamento de Biodinâmica do Movimento Humano-Escola de Educação Física e Esporte - USP, São Paulo, Brazil.Faculdade de Ciências Médicas- Departamento de Cirurgia do Hospital de Clínicas UNICAMP, Campinas, São Paulo, Brazil.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

25264334

Citation

Gobato, Renata Cristina, et al. "Micronutrient and Physiologic Parameters Before and 6 Months After RYGB." Surgery for Obesity and Related Diseases : Official Journal of the American Society for Bariatric Surgery, vol. 10, no. 5, 2014, pp. 944-51.
Gobato RC, Seixas Chaves DF, Chaim EA. Micronutrient and physiologic parameters before and 6 months after RYGB. Surg Obes Relat Dis. 2014;10(5):944-51.
Gobato, R. C., Seixas Chaves, D. F., & Chaim, E. A. (2014). Micronutrient and physiologic parameters before and 6 months after RYGB. Surgery for Obesity and Related Diseases : Official Journal of the American Society for Bariatric Surgery, 10(5), pp. 944-51. doi:10.1016/j.soard.2014.05.011.
Gobato RC, Seixas Chaves DF, Chaim EA. Micronutrient and Physiologic Parameters Before and 6 Months After RYGB. Surg Obes Relat Dis. 2014;10(5):944-51. PubMed PMID: 25264334.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Micronutrient and physiologic parameters before and 6 months after RYGB. AU - Gobato,Renata Cristina, AU - Seixas Chaves,Daniela Fojo, AU - Chaim,Elinton Adami, Y1 - 2014/05/20/ PY - 2013/06/17/received PY - 2014/05/12/revised PY - 2014/05/14/accepted PY - 2014/9/30/entrez PY - 2014/9/30/pubmed PY - 2015/8/4/medline KW - Bariatric surgery KW - Roux-en-Y gastric bypass surgery KW - autonomic nervous system balance KW - food intake KW - insulin resistance KW - micronutrient deficiency KW - obesity KW - stiffness index SP - 944 EP - 51 JF - Surgery for obesity and related diseases : official journal of the American Society for Bariatric Surgery JO - Surg Obes Relat Dis VL - 10 IS - 5 N2 - BACKGROUND: Bariatric surgery is considered an effective method for sustained weight loss, but may cause various nutritional complications. The aim of this study was to evaluate the nutritional status of minerals and vitamins, food consumption, and to monitor physiologic parameters in patients with obesity before and 6 months after Roux-en-Y gastric bypass surgery (RYGB). METHODS: Thirty-six patients who had undergone RYGB were prospectively evaluated before and 6 months after surgery. At each phase their weight, height, body mass index (BMI), Electro Sensor Complex (ES Complex) data, food consumption, and total protein serum levels, albumin, prealbumin, parathyroid hormone (PTH), zinc (Zn), B12 vitamin (VitB12), iron (Fe), ferritin, copper (Cu), ionic calcium (CaI), magnesium (Mg), and folic acid were assessed. RESULTS: The mean weight loss from baseline to 6 months after surgery was 35.34±4.82%. Markers of autonomic nervous system balance (P<.01), stiffness index (P<.01), standard deviation of normal-to-normal R-R intervals (SDNN) (P<.01), and insulin resistance (P<.001) were also improved. With regard to the micronutrients measured, 34 patients demonstrated some kind of deficiency. There was a high percentage of Zn deficiency in both pre- (55.55%) and postoperative (61.11%) patients, and 33.33% of the patients were deficient in prealbumin postoperatively. The protein intake after 6 months of surgery was below the recommended intake (<70 g/d) for 88.88% of the patients. Laboratory analyses demonstrated an average decrease in total protein (P<.05), prealbumin (P = .002), and PTH (P = .008) between pre- and postsurgery, and a decrease in the percentage of deficiencies for Mg (P<.05), CaI (P<.05), and Fe (P = .021). CONCLUSION: Despite improvements in the autonomic nervous system balance, stiffness index markers and insulin resistance, we found a high prevalence of hypozincemia at 6 months post-RYGB. Furthermore, protein supplements were needed to maintain an adequate protein intake up to 6 months postsurgery. SN - 1878-7533 UR - https://www.unboundmedicine.com/medline/citation/25264334/Micronutrient_and_physiologic_parameters_before_and_6_months_after_RYGB_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1550-7289(14)00212-3 DB - PRIME DP - Unbound Medicine ER -