Text this: Huolong pot comprehensive moxibustion combined with Chinese herbal medicine wound dressing and TDP electromagnetic wave irradiation in the treatment of stage 4 pressure injuries in a patient with multiple injuries and complete paraplegia (火龙罐综合灸联合生肌玉红膏换药和特定电磁波谱照射治疗1例多发伤并完全性截瘫伴4期压力性损伤患者的护理)