Complications

Prevalence

Study Design

Country

Bariatric Surgery Procedure

Etiologies

References

Peripheral Neuropathies after Bariatric Surgery

2% [4];

16% [5];

54% [9];

67% [15].

Cross sectional study [4];

Retrospective study [5];

Non-systematic review [9]; Non-Systematic review [15].

U.S.A [4,5,9].

Gastric bypass (GB), vertical banded gastroplasty (GP), sleeve gastrectomy [4]; GB, GP, pancreaticobiliary by-pass and jejunoileal bypass [9,13].

Cobalamin, Thiamine, Folate, Vitamin E and Copper deficiencies [14,15].

[4,5,9,14,15].

Polineuropathies 

Large Fibers

Due Vitamin B1 deficiency

1% [3],

30% [13].

Non-Systematic review [3];

Retrospective study [13].

U. S. A

[3,13].

Roux-en-Y

gastric bypass, Restrictive Surgery and malabsorptive surgery [3]; Roux-en-Y gastric bypass [13].

Vomiting and excessive weight loss [13]; [17]

[3]; [13]; [17].

Due Vitamin B12 deficiency

20% [3],

0,4% [4];

70% [15].

Non-Systematic review [3]; Cross sectional study [4]; Non-Systematic review [15].

U.S.A

[3,4]

Roux-en-Y gastric bypass, Restrictive Surgery and malabsorptive surgery [3]; GB, GP and sleeve gastrectomy [4]

Decrease of Intrinsic Factor and stomach acid [3]

[3]; [4]; [15].

Guillain-Barré-Syndrome

0,4% [4]

Cross sectional study [4].

U.S.A [4].

GB, GP and sleeve gastrectomy [4]

Axonal degeneration [26]

[5]; [26]

Small fibers

Unknown

Unknown

Unknown

Unknow

Copper, Thiamine, Cobalamin and Riboflavin (B2) deficiencies [3]; [8]; [16]; [20]; .

[3]; [8]; [11]; [16]; [20]; .

Focal neuropathies

Meralgia paresthetica

Unknown

Unknown

Unknown

Unknow

Position during surgery [4].

[4].

Cubital syndrome

5% [9]

Retrospective study [9].

U.S.A [9].

GB, GP, pancreaticobiliary by-pass and jejunoileal bypass [9].

Position during surgery [9].

[9].