Comprehensive treatment of deep frostbite of multiple fingers after trauma: A case report

Table 1 Abnormal laboratory results at the patient's first admission

Item	Value	Reference range
Lymphocytes (%)	6.2	20.0-40.0
Neutrophils (%)	85.6	50.0-75.0
White blood cells (L)	9.95 × 109	3.50-9.50
Red blood cells (L)	3.14 × 1012	4.00-5.50
Hemoglobin (g/L)	115	120-160
Prothrombin time (s)	12.9	10.4-12.6
D-dimer (mg/L FEU)	3.18	0-0.55
C-reactive protein	30.40	≤ 8.00
Amylase (U/L)	537	35-135
Total bilirubin (μmol/L)	43.6	5.1-22.2
Direct bilirubin (μmol/L)	16.3	≤ 6.8
Myoglobin (μg/L)	1043	≤ 110
Creatine kinase (U/L)	3022	24-195
Creatine kinase-mass (μg/L)	43.3	≤ 5.0

Table 2 Treatment plan for the patient's injured right index finger

Date	Therapeutic process
Day 2	The wound appeared red and well-circumscribed. After applying a thick layer of bacitracin ointment, it was covered with petroleum gauze, and the dressing was changed daily
Day 3-6	Epidermal growth factor gel, silver ion gel, and povidone-iodine were used to cover the calcium alginate dressing to prevent wound infection. Ulcer oil gauze and plain gauze were wrapped around the wound (Figure 1C and D)
Day 7	Epithelialization of the wound was performed (Figure 2C).
Day 9	The newly regenerated epidermis underwent crust formation (Figure 2D)
Days 12-16	The scab gradually shed off from initial formation to complete detachment (Figure 3D)