Frequency of Gestational Diabetes Mellitus Reappearance or Absence during the Second Pregnancy of Women Treated at Mayo Clinic between 2013 and 2018

Table 1

Clinical parameters for data analysis 1.

Clinical parameter	1st pregnancy w/ GDM; ()	2nd pregnancy w/ GDM; ()	2nd pregnancy w/o GDM; ()
Age	Range 19-43 years; Mean SD	Range 24-39 years; Mean SD	Range 21-32 years; Mean SD
Weight	Mean 79.79 kg; ±24.88 SD	Mean 81.94 kg; ±17.41	Mean 81.96 kg; ±25.23
BMI (body mass index)	Mean 29.67 kg/m^2; ±8.59 SD	Mean 31.07 kg/m^2; ±6.53	Mean 30.47 kg/m^2; ±8.91
1 hr glucose level	Mean of 189.05 mg/dL; ±23.67 SD	Mean of 203.09 mg/dL; ±21.16 SD	Normal treatment procedures for pregnancy
2 hr glucose level	Mean of 178.83 mg/dL; ±24.00 SD	Mean of 199.55 mg/dL; ±36.85 SD	Normal treatment procedures for pregnancy
3 hr glucose level	Mean of 130.72 mg/dL; ±34.32 SD	Mean of 130.91 mg/dL; ±24.27 SD	Normal treatment procedures for pregnancy
Postparturition glucose levels	Mean of 108.47 mg/dL; ±33.05 SD	Mean of 99.77 mg/dL; ±13.02 SD	Normal treatment procedures for postpregnancy

Mayo Clinic basis for a GDM diagnosis is as follows: requires 3 consecutive glucose level tests. If 2 of 3 tests are greater than normal, the woman is diagnosed with GDM. Glucose level of less than 180 mg/dL is considered normal. Glucose level of less than 155 mg/dL is considered normal. Glucose level of less than 140 mg/dL is considered normal. Glucose level tested to insure normal glucose levels returned post-GDM.