Complications, Reoperations, and Nutrient Deficiencies Two Years after Sleeve Gastrectomy

Table 9

Necessity of vitamin B12 supplementation during the follow-up period.

	BMI
	35–39.9 kg/m²		40–49.9 kg/m²		50–59.9 kg/m²		≥ 60 kg/m²		Total
Vitamin B12	n	%	n	%	n	%	n	%	n	%
After OP	0	0.0	0	0.0	0	0.0	1	5.6	1	1.2
After 3 months	1	16.7	4	17.4	5	14.3	1	5.6	11	13.4
After 6 months	0	0.0	1	4.3	4	11.4	1	5.6	6	7.3
After 12 months	0	0.0	1	4.3	0	0.0	1	5.6	2	2.4
After 18 months	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0
After 24 months	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0
After 2nd OP	1	16.7	2	8.7	10	28.6	5	27.8	18	22.0
Total	2	33.3	8	34.8	19	54.3	9	50.0	38	46.3