Research Article

Insulin-induced Lipohypertrophy in Patients with Type 1 Diabetes Mellitus Treated with an Insulin Pump

Table 1

Patients characteristics.

VariableAll patients (n = 79)Patients with HbA1c <7% (n = 30)Patients with HbA1c ≥ 7% (n = 48)

Age, years28 (24–30.5)29 (24.3–33.8)25.5 (24–30)0.21
Men, n (%)40 (50.6)16 (53.3)23 (47.9)0.82
Diabetes duration, years15.0 (9–20)12 (9–19)16.5 (8.8–20)0.44
Time in CSII, years8.5 ± 4.89.2 ± 5.18.2 ± 4.60.37
HbA1c, %; mmol/mol7.1 (6.7–8.1) 54 (51–65)6.5 (6.3–6.8) 47.5 (45.4–50.8)7.7 (7.3–8.8) 60.7 (56.3–72.7)<0.001
BMI, kg/m224.5 ± 3.524.2 ± 3.224.7 ± 3.70.54
MDI before insulin pump, years3 (2–8)2 (1–5.8)4 (2–12.3)0.01
Hypothyroidism, n (%)14 (17.7)5 (16.7)8 (16.3)0.99
≥5 LH lesions on US, n (%)41 (51.8)13 (43.3)24 (58.3)0.29

HbA1c, hemoglobin A1c; CSII, continuous subcutaneous insulin infusion; BMI, body mass index; MDI, multiply insulin injection; LH, lipohyperthropy. For the comparison of patients with HbA1c < 7% and ≥7%.