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Prevalence of iron, folate, and vitamin B12 deficiency anemia after laparoscopic Roux-en-Y gastric bypass.
Obes Surg 2008; 18(3):288-93OS

Abstract

BACKGROUND

One of the most common bariatric operations is the laparoscopic Roux-en-Y gastric bypass (LRYGBP) in which the gastric capacity is restricted and the absorption by the small intestine is reduced. The objective of this study was to evaluate the incidence of iron, folate, and vitamin B12 deficiency anemia in patients undergoing LRYGBP.

PATIENTS AND METHODS

Clinical records of 30 patients who underwent LRYGBP between July 2003 and January 2005 and had a minimum follow up of 24 months at our outpatient clinic were included. Multivitamin supplementation was prescribed to all patients. The complete blood cell count, plasma iron, total iron-binding capacity, transferrin saturation, serum folate, and cobalamin levels before surgery, 6 months, 1, 2, and 3 years after the surgery were analyzed.

RESULTS

There were 25 women (83.4%) and five men (16.6%) with ages from 21 to 56 years. Before surgery, two patients (6.6%) presented ferropenic anemia. Iron deficiency was seen in 40 and 54.5% 2 and 3 years after surgery, respectively. Cobalamin deficiency was observed in 33.3% at 2 years and in 27.2% at 3 years. At 2-year follow-up, 46.6% of the patients had already developed anemia and 63.6% at 3 years. Folate deficiency was not observed in any patient.

CONCLUSION

Our routine scheme of vitamin supplementation is not sufficient to prevent iron and vitamin B12 deficiencies in most patients.

Authors+Show Affiliations

Department of Hematology/Oncology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Vasco de Quiroga 15, Tlalpan, 14000, México DF, Mexico.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

18214631

Citation

Vargas-Ruiz, Angel G., et al. "Prevalence of Iron, Folate, and Vitamin B12 Deficiency Anemia After Laparoscopic Roux-en-Y Gastric Bypass." Obesity Surgery, vol. 18, no. 3, 2008, pp. 288-93.
Vargas-Ruiz AG, Hernández-Rivera G, Herrera MF. Prevalence of iron, folate, and vitamin B12 deficiency anemia after laparoscopic Roux-en-Y gastric bypass. Obes Surg. 2008;18(3):288-93.
Vargas-Ruiz, A. G., Hernández-Rivera, G., & Herrera, M. F. (2008). Prevalence of iron, folate, and vitamin B12 deficiency anemia after laparoscopic Roux-en-Y gastric bypass. Obesity Surgery, 18(3), pp. 288-93. doi:10.1007/s11695-007-9310-0.
Vargas-Ruiz AG, Hernández-Rivera G, Herrera MF. Prevalence of Iron, Folate, and Vitamin B12 Deficiency Anemia After Laparoscopic Roux-en-Y Gastric Bypass. Obes Surg. 2008;18(3):288-93. PubMed PMID: 18214631.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Prevalence of iron, folate, and vitamin B12 deficiency anemia after laparoscopic Roux-en-Y gastric bypass. AU - Vargas-Ruiz,Angel G, AU - Hernández-Rivera,Gabriela, AU - Herrera,Miguel F, Y1 - 2008/01/23/ PY - 2007/08/21/received PY - 2007/09/11/accepted PY - 2008/1/25/pubmed PY - 2008/6/27/medline PY - 2008/1/25/entrez SP - 288 EP - 93 JF - Obesity surgery JO - Obes Surg VL - 18 IS - 3 N2 - BACKGROUND: One of the most common bariatric operations is the laparoscopic Roux-en-Y gastric bypass (LRYGBP) in which the gastric capacity is restricted and the absorption by the small intestine is reduced. The objective of this study was to evaluate the incidence of iron, folate, and vitamin B12 deficiency anemia in patients undergoing LRYGBP. PATIENTS AND METHODS: Clinical records of 30 patients who underwent LRYGBP between July 2003 and January 2005 and had a minimum follow up of 24 months at our outpatient clinic were included. Multivitamin supplementation was prescribed to all patients. The complete blood cell count, plasma iron, total iron-binding capacity, transferrin saturation, serum folate, and cobalamin levels before surgery, 6 months, 1, 2, and 3 years after the surgery were analyzed. RESULTS: There were 25 women (83.4%) and five men (16.6%) with ages from 21 to 56 years. Before surgery, two patients (6.6%) presented ferropenic anemia. Iron deficiency was seen in 40 and 54.5% 2 and 3 years after surgery, respectively. Cobalamin deficiency was observed in 33.3% at 2 years and in 27.2% at 3 years. At 2-year follow-up, 46.6% of the patients had already developed anemia and 63.6% at 3 years. Folate deficiency was not observed in any patient. CONCLUSION: Our routine scheme of vitamin supplementation is not sufficient to prevent iron and vitamin B12 deficiencies in most patients. SN - 0960-8923 UR - https://www.unboundmedicine.com/medline/citation/18214631/Prevalence_of_iron_folate_and_vitamin_B12_deficiency_anemia_after_laparoscopic_Roux_en_Y_gastric_bypass_ L2 - https://dx.doi.org/10.1007/s11695-007-9310-0 DB - PRIME DP - Unbound Medicine ER -