Objective To research the effects of vascular endothelial growth factor (VEGF) on the survival of reverse flow axial skin flaps. Methods A 8 cm×2 cm full thickness transverse dorsal flap based on right deep circumflex iliacartery was elevated in 20 SpragueDawley rats, which length crossing midline was 4.0 cm. The rats were randomized into two groups:experimental group (n=10), subcutaneous VEGF injections into the flap (200 ng, 200 μl) after flap elevation; controlgroup (n=10), subcutaneous saline injections into the flap (200 μl) after flap elevation. The flap was immediately sutured to its recipient beds then the injection was executed. Seven days after operation, the survival area of flaps and density of vessels were observed and measured, meanwhile its histological representation of the flaps was examined. Results After 7 days of recovery, the mean survival area of flaps was 15.55±0.27 cm2 in experimental group and 13.42±0.57 cm2 in control group. The difference was significant between experimental group and control group (P＜0.01). The mean vessel density of flaps was 21.00±3.16 in control group and 34.40±3.75 in experimental group. The difference was significant between experimental group and control group (P＜0.01). Histological analysis demonstrated that a qualitatively greater amount of granulation tissue, regular collagen fiber and a lot of fibrillated cells were observed in experimental group. Erythrocytes were leaked outfrom vessels, and inflammatory cells were observed around in control group. Conclusion In early survival of flaps, the VEGF can improve the survival of areverse flow axial skin flap through improving angiogenesis and increasing the perfusion of vessel. It is an effective method of improving the survival of reverse flow axial skin flaps that VEGF is fully injected in subcutaneous flaps by single, when flaps are elevated.
Objective To investigate the basic mechanism of venous flow in reverseflow island flap. Methods Recent relevant literature on the mechanism of venous reverse flow in reverseflow island flap wereextensively reviewed. Results The mechanism of venous reverse flow was a multifactorial phenomenon. “Communicating and collateral by pass route” and “incompetent valve route” were two theories. Conclusion The two routes of venous reverse flow in reverse-flow island flap coexistand complement each other.
Objective To share the experience of the diagnosis and treatment of children with hand-foot-mouth disease. Methods We retrospectively analyzed 31 children with hand-foot-mouth disease in our hospital from April 2007 to June 2007 in terms of epidemiology, clinical features, treatment and prognosis. Results The average age of the children was 2.8 years, and 20 out of the 31 cases were from nurseries and kindergartens. Eighteen had clear contact history. Typical signs and symptoms, including oral ulcerative herpes and blister-like rash in extremities, were found in all cases. All the children were cured after timely diagnosis and early treatment with ribavirin, without any severe complications. Conclusion Timely treatment based on early diagnosis and considerate care are important for children with hand-foot-mouth disease. Nurseries, kindergartens and primary schools should attach great importance to relevant prophylaxis and isolation. These are essential for reducing the occurrence and prevalence of this disease.
【Abstract】 Objective To investigate the anti-infection and bone repair effects of cationic l i posome-encapsulatedvancomycin combined with the nano-hydroxyapatite/chitosan/konjac glucomannan (n-HA/CS/KGM) composite scaffold invivo. Methods Fifty-one 6-month-old New Zealand white rabbits, weighing 1.5-3.0 kg, were selected to prepare chronicinfectious tibia bone defect model by using Staphylococcus aureus. After 4 weeks, 48 survival rabbits were randomly divided into 4 groups (n=12). After debridement, defect was treated with nothing in group A, with n-HA/CS/KGM composite scaffold in group B, with vancomycin and n-HA/CS/KGM composite scaffold in group C, and with cationic l i posome-encapsulated vancomycin and n-HA/CS/KGM composite scaffold in group D. After 8 weeks of treatment, general observation, X-ray, HE staining, the bacterial culture, and the measurement of the longest diameter of bone defect were done. Results At 4 weeks after modeling, 48 rabbits were diagnosed as having osteomyelitis, including periosteal new bone formation, destruction of bone, and soft tissue swell ing. The Norden score was 3.83 ± 0.52. At 8 weeks after treatment, sinus healed in groups C and D, but sinus was observed in groups A and B; the gross bone pathologieal scores of group D were significantly better than those of groups A and B (P lt; 0.05). Bone defects were repaired completely in group D, the results of the longest diameter of bone defects in group D was significantly better than those in the other 3 groups (P lt; 0.05). New bone formation was observed in groups C and D, but periosteal reactionand marrow low-density shadow were observed in groups A and B; Norden score in group D was significantly better than those in groups A, B, and C (P lt; 0.05). HE staining showed that there were a large number of trabecular bone formation and fibrosis, with no obvious signs of infection in groups C and D, but neutrophil accumulation was observed in groups A and B; Smeltzer scores in groups C and D were significantly better than those in groups A and B (P lt; 0.05). Bacteriological results showed higher negative rate in groups C and D than in groups A and B (P lt; 0.05). Conclusion Cationic l iposome-encapsulated vancomycin and n-HA/CS/KGM composite scaffold can be a good treatment for infectious bone defects in rabbits, providing a new strategy for the therapy of bone defects in chronic infection.
Objective To assess the clinical efficacy of ultrasonic atomization of penicillin combined with erythromycin in children with acute suppurative tonsillitis. Methods From July 2007 to December 2007, 70 children with a confirmed diagnosis of acute suppurative tonsillitis were randomized into two groups. Thirty-one patients in the control group received continuous 5-day treatment of routine intravenous drip of penicillin (200000units/ (kg?d)), twice a day, while 39patients in the trial group received, in addition to the routine treatment, another 5-day treatment of ultrasonic atomization of 0.1 g erythromycin and 10ml saline diluted by 10ml sterile water, 15min for each treatment, twice a day. Observation of the clinical efficacy of the two groups and statistical analyses were conducted. Results The cure rate and total effective rate of the trial group were 61.54% and 97.44%, and those of the control group were 35.48% and 77.42%, respectively. The pyretolysis rates at 48 h and 72 h in the trial group were 75.36% and 89.74%, and those in the control group were 45.16% and 61.29%, respectively. The improvement rates of pharyngodynia at 48 h and 72 h in the trial group were 76.92% and 92.31%, and those in the control group were 48.39% and 70.97%, respectively. The results of both rank sum test and chi-square test revealed significant differences between the trial group and the control groups (Plt;0.05), which indicated that the trial group was superior to the control group in terms of cure rate, total effectiveness rate, pyretolysis rate and improvement of pharyngodynia. During ultrasonic atomization, 3 patients experienced mild nausea and vomiting, all of which disappeared after rest. No other adverse reactions were recorded. Conclusions Ultrasonic atomization of penicillin combined with erythromycin for children with acute suppurative tonsillitis is worthy of clinical application due to its better efficacy and safety profile.
ObjectiveTo investigate the effectiveness of butterfly shaped locking compression plate for the treatment of complex distal radius fractures. MethodsBetween June 2011 and January 2013, 20 cases of complex distal radius fractures were treated with butterfly shaped locking compression plate fixation. There were 11 males and 9 females with an average age of 54 years (range, 25-75 years). Injury was caused by falling in 10 cases, by traffic accident in 7 cases, and by falling from height in 3 cases. All of fractures were closed. According to AO classification system, there were 8 cases of type C1, 8 cases of type C2, and 4 cases of type C3. Of them, 9 cases had radial styloid process fracture, 4 cases had sigmoid notch fracture, and 7 cases had both radial styloid process fracture and sigmoid notch fracture. The mean interval between injury and operation was 5.2 days (range, 3-15 days). ResultsAll incisions healed by first intention; no complications of infection and necrosis occurred. All cases were followed up 14 months on average (range, 10-22 months). All factures healed after 9.3 weeks on average (range, 6-11 weeks). No complications such as displacement of fracture, joint surface subsidence, shortening of the radius, and carpal tunnel syndrome were found during follow-up. At last follow-up, the mean palmar tilt angle was 10.2°(range, 7-15°), and the mean ulnar deviation angle was 21.8°(range, 17-24°). The mean range of motion of the wrist was 45.3°(range, 35-68°) in dorsal extension, 53.5°(range, 40-78°) in palmar flexion, 19.8°(range, 12-27°) in radial inclination, 26.6°(range, 18-31°) in ulnar inclination, 70.2°(range, 45-90°) in pronation, and 68.4°(range, 25-88°) in supination. According to the Dienst scoring system, the results were excellent in 8 cases, good in 10 cases, and fair in 2 cases, and the excellent and good rate was 90%. ConclusionTreatment of complex distal radius fractures with butterfly shaped locking compression plate can reconstruct normal anatomic structures, especially for radial styloid process and sigmoid notch fractures, and it can get good functional recovery of the wrist and the distal radioulnar joint.
Objective To provide evidence for timely diagnosis and treatment of Kawasaki disease through assessing the relationship between the duration of fever and the incidence of coronary artery lesion in patients with Kawasaki disease. Methods To retrospectively analyze the clinical information of 352 inpatients with Kawasaki disease (including typical Kawasaki disease, incomplete Kawasaki disease, and non-responsive to intravenous immunoglobulin treatment Kawasaki disease ) from January 1997 to December 2007. The relationship between the duration of fever and the incidence of coronary artery lesion was presented by a linear trend plot, using Cochran-Armitage trend test. A value of P lt; 0.05 was considered statistically significant. Results Among 352 patients with Kawasaki disease, 88 had coronary artery lesions. Sixty-eight out of 294 patients with typical Kawasaki disease, 20 out of 58 patients with incomplete Kawasaki disease, and 18 out of 44 patients with non-responsive Kawasaki disease had coronary artery lesions. Linear trend analysis showed that the duration of fever in all 352 patients with Kawasaki disease and 294 cases with typical Kawasaki disease was positively correlated with the incidence of coronary artery lesion (Plt;0.05). However, in patients with incomplete Kawasaki disease and non-responsive Kawasaki disease, the relationship between the duration of fever and the incidence of coronary artery lesion was not significant (Pgt; 0.05). Conclusion The longer the duration of fever was in patients with Kawasaki disease, higher the risk of coronary artery lesion.
ObjectiveTo discuss the clinical result of extrinsic radioulnar tether combined with anchoring nail fixation for treating chronic dorsal instability of the distal radioulnar joint (DRUJ). MethodsBetween July 2011 and December 2012, 6 patients with chronic dorsal instability of the DRUJ were treated with extrinsic radioulnar tether combined with anchoring nail fixation. There were 1 male and 5 females with the average age of 27.3 years (range, 22-35 years). All of 6 patients had a wrist trauma history. The average disease duration was 4.8 years (range, 6 months to 15 years). Radiographs were taken postoperatively to observe the anchoring nail loosening. The stress test and forearm rotation test were used to evaluate the function of DRUJ. The complications, the grip power, range of motion, and visual analogue scale (VAS) scores were recorded at last follow-up. And the joint function was evaluated by disability of arm, shoulder, and hand (DASH) score. ResultsPrimary healing of incision was obtained in all cases, without any complications such as infection and ulnar neck fracture. All 6 patients were followed up 6-24 months (mean, 13.7 months). Stability was achieved in all patients. Radiographs showed that the joint space was widened and dislocation of the ulnar head was improved at 3 and 6 months after operation. The results of the stress test and forearm rotation test were negative. At last follow-up, the grip power, DASH score, VAS score, and range of motion of the wrist were significantly improved when compared with preoperative ones (P<0.05). ConclusionExtrinsic radioulnar tether combined with anchoring nail fixation is an easy method of surgical revision to treat chronic dorsal instability of DRUJ, which can maintain the stability and protect the blood supply of triangular fibrocartilage complex.