Renjie Chi

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In order to improve the curative effects of laryngotracheal stenosis, 261 patients treated for laryngotracheal stenosis during the last twenty years were retrospectively reviewed. Glottic reconstruction, fence-form laryngotracheal reconstruction and laryngotracheotomy with autogenous tissue or hydroxylapatite rings were selectively used for one-stage(More)
Complete healing of full-thickness tracheal mucosal wounds of different sizes was studied in three groups of dogs. No stricture was observed when the mucosal wounds were less than 20 x 15 mm. Obvious stricture, however, occurred when the wounds were 20 x 25 mm. Normal epithelium regenerated on the wounded areas in all of the three groups within seven weeks.
The microvasculature of the human fetal trachea was studied in vascular casts viewed in a scanning electron microscope (SEM). The trachea is supplied by longitudinal vascular bundles running at both sides of the organ, including both longitudinal tracheoesophageal arteries and veins. They are the source of the segment vascularization of the trachea. Due to(More)
The tracheal mucosa of fourteen dogs was denuded and resected in sizes of 20mm x 25mm respectively. The raw surfaces were managed with mucosal flaps. The healing process of denuded area was observed by microscope, light microscope and scanning electron microscope. The outcomes were compared with those of control group. From this experiment it was(More)
Upconversion emission has been obtained from Er-focused ion-beam (FIB) implanted GaN. Visible green emission at the 522- and 546-nm range were excited with infrared (IR) laser sources at either 840 or 1000 nm, or with both lasers simultaneously. By implanting closely spaced patterns with the FIB, we demonstrated the concept of storing data in Er-implanted(More)
OBJECTIVE To investigate the expression pattern of hypoxia-inducible factor 1alpha (HIF-1alpha) in experimental secondary spinal cord injury (SSCI) in rats and its potential effects on SSCI. METHODS A total of 66 SD rats (female or male) with weight (250 +/- 20) g were randomly divided into 3 groups: normal control group (group A, n = 6), pseudo injury(More)
One hundred and thirty-seven cases of cicatricial laryngotracheal stenosis have been treated within the past 10 years. Our cases were classified into 4 types according to the destruction of the cartilagenous frame and stenosis of the airway, they were: obstructive (or blocking), collapsed, centripetally constricted and obliterative. Operative designs(More)
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