Therapeutic Effect and Mechanism of Negative Pressure Wound Therapy with Huoxue Shengji Decoction Instillation for Chronic Skin Ulcers

Table 7

Effects of different treatments on microangiogenesis of ulcer granulation.

Group	Number	Microvessel count (pieces/200x field of vision)		t
		Before the first repair and reconstruction operation	The 5th day after the operation
A	20	21.50 ± 2.16	34.50 ± 3.85^ΔΔ	−13.825	≤0.001
B	20	19.95 ± 3.38	26.25 ± 4.41^ΔΔ	−5.570	≤0.001
C	20	20.00 ± 3.36	28.00 ± 5.03	−6.107	≤0.001
F		1.701	17.050
		0.192	≤0.001
Comparison	value for microvessel count
	Before the first repair and reconstruction operation		The 5th day after the operation
A-B	0.330		≤0.001
A-C	0.365		≤0.001
B-C	1.000		0.657

Group A: HXSJ decoction instillation combined with NPWT. Group B: continuous saline instillation combined with NPWT. Group C: NPWT. between groups A and C. between groups A and C. ^Δ between groups A and B. ^ΔΔ between groups A and B. ^# between groups B and C. ^## between groups B and C.