Adolescent ; Epistaxis ; etiology ; Histiocytosis, Sinus ; complications ; diagnosis ; Humans ; Male

Cardiovascular Diseases ; epidemiology ; prevention & control ; Cerebrovascular Disorders ; epidemiology ; prevention & control ; Humans ; Public Health Practice

Objective To analyze the clinical manifestations and electroencephalogram (EEG)characteristics of agyria-pachygyria for its early diagnosis,treatment and prognosis judgment in clinical practice.Methods The clinical manifestations and EEG features of twenty-four patients with agyria-pachygyria who were diagnosed by CT or magnetic resonance imaging(MRI) at Pediatric Neurology of Children's Hospital of Chongqing Medical University from July 2004 to July 2013 were retrospectively analyzed.Results Of twenty-four patients,eighteen cases were diagnosed as diffuse agyria-pachygyria and six cases were diagnosed as partial agyria-pachygyria.The clinical features were mainly manifested as mental retardation (twenty-four patients),and motor retardation (twenty-four patients),and epilepsy (eighteen patients).All of the twenty-four patients had abnormal EEG pattern which were mainly three tapes.Type Ⅰ had diffused high amplitude alpha and beta activity in all cortical regions,frontal-central,or parietal-occipital region (fourteen patients).Type Ⅱ showed alternating high amplitude bursts with sharp and slow waves (seven patients).Type Ⅲ was characterized by high amplitude spike or sharp wave activity generalized or multifocal distribution and δ,θ wave mixing graphics (twelve patients).Nine of twenty-four patients showed two or three EEG characteristic patterns in an awake-asleep EEG recording.During the follow-up of 1-8 years old,twelve of the thirteen patients who were diagnosed as epilepsy in diffuse agyria-pachygyria had refractory epilepsy,mainly with infantile spasms or Lennox-Gastaut syndrome.One of the five patients who was diagnosed as epilepsy in focal agyria-pachygyria had refractory epilepsy,mainly for partial epilepsy secondary generalized seizures.There was a significant difference between them (P =0.008).Eighteen of twenty patients who had moderate-severe mental retardation or dyskinesia were diagnosed as diffuse a gyria-pachygyria,while two were focal agyria-pachygyria.Both of them had a significant difference (P =0.005).Conclusions Agyria-pachygyria is a brain malformation caused by neuronal migration abnormality.Diffuse agyria-pachygyria is presented with serious clinical manifestations and poor outcome while the clinical manifestation of focal agyria-pachygyria is relatively mild and epilepsy could be controlled by antiepileptic drugs or epilepsy surgery.These characteristics of EEG patterns along with clinical findings could provide important evidence for early diagnosis,timely treatment and prognosis judgment of agyria-pachygyria.

Objective To explore the characteristic and clinical value of Somatosensory Evoked Potential SEP and event?related potential P300 in patients with Juvenile Myoclonic Epilepsy (JME), trying to provide neuroelectrophysiological evidence for the pathogenesis, diagnosis and antiepileptic drug efficacy of this disease . Methods 28 patients with JME and 30 healthy controls were enrolled in the research. They were applied the SEP and P300 before and after one year treatment. Results (1) The amplitude of SEP in patients with JME was significantly higher than those in the control group(P=0.000), the abnormal rate was 75%(21/28), while the latency of SEP was no significant difference (P>0.05); The latency of P300 in patients with JME was significantly longer (P = 0.000), 2 out of 28 cases were poorly differentiated, 9 cases were longer (11/28, 39%), while the P300 amplitude was no significant difference(P=0.110). (2) After treatment, the amplitude of SEP was significantly lower (P<0.05), the latency of P300 was significantly shorter (P=0.001). (3) The amplitude of SEP had a positively linear relationship with the latency of P300 (r = 0.818, P = 0.000). Conclusions The SEP amplitude was significantly higher in patients with JME, often accompanied by a huge SEP, so SEP can provide electrophysiological evidence for the pathogenesis and diagnosis of this disease.And P300 may give a chance to find the subclinical cognitive abnormalities and to intervent it early. The SEP had a positively linear relationship with the P300, simultaneously dynamic monitoring the change of SEP amplitude and P300 latency may become an objective evaluation for the antiepileptic drug efficacy.

Objective To investigate the effect of ketamine on the synaptic long-term potentiation(LTP) in the CA1 area of rat hippocampal slices,and to elucidate the mechanisms underlying the effect of ketamine on memory.Methods Hippocampal slices(400 ?m thick) were obtained from the brains of male Sprague-Dawley rats(2 months old) weighing 200-250 g that were decapitated.The slices were incubated in artificial cerebrospinal fluid(ACSF) at room temperature for at least 120 min before use.Forty-nine slices were randomly divided into 7 groups(n=7):control group,ketamine 1,5,10,30,50 and 100 ?mol?L-1 groups.All the slices in each group were perfused with ACSF,ketamine 1,5,10,30,50 or 100 ?mol?L-1,respectively.The slices in each group were performed to record evoked population spikes(PS) using extracellular microelectrode recording technique.Another forty-nine slices were randomly divided into 7 groups(n=7):LTP group,ketamine-LTP 1,5,10,30,50 and 100 ?mol?L-1 groups.All the slices in each group were perfused with ACSF,ketamine 1,5,10,30,50 or 100 ?mol?L-1,respectively.PSs were recorded for at least 30 min before LTP in each group.For LTP induction,high-frequency stimulation(HFS) conditioning pulses(100 Hz?s-1) were applied to the Schaffer collateral-commissural pathway of hippocampus using a bipolar stimulating electrode.The changes in PS amplitude after HFS were analyzed in each group.Results The PS amplitude of the rat hippocampal slices in ketamine 1,5,and 10 ?mol?L-1 groups had no significant difference compared with control group.The PS amplitude in ketamine 30,50 and 100 ?mol?L-1 groups decreased compared with control group(P

Objective To assess the effect of different ages on sufentanil pharmacokinetics in patients undergoing cardiac valve replacement.Methods Sixteen NYHA Ⅱ or Ⅲ patients undergoing selective cardiac valve replacement were randomly divided into two groups:elderly group (aged 65-69 years,group Ⅰ,n =8) and young adult group (aged 36-45 years,group Ⅱ,n =8).Intravenous and intra-arterial cannulae were placed.Sufentanil 5 μg/kg injected intravenously during anesthesia induction.Blood samples from the radial artery were obtained at 1,3,5,10,20,30,60,120,180,240 and 360 min after sufentanil injection (3 ml each).Then 1 ml plasma was immediately separated from the 3 ml blood sample and stored at - 80 ℃ until being assayed.Plasma sufentanil concentration was determined with liquid chromatography mass spectrometry and pharmacokinetic parameters were calculated with 3P97 pharmacologicl program.Results Plasma sufentanil concentration versus the time decay curve in patients undergoing cardiac valve replacement before cardiopulmonary bypass (CPB) was fitted to a twocompartment model and could be expressed by bi-exponential equations:Cp (t) =27.4 e-0.41t + 3.2 e-0.029t in group Ⅰ and Cp (t) =14.4 e-0.51t +3.4 e-0.032t in group Ⅱ,respectively.There were significant differences in t 1/2 α,t1/2 β and CL between the two groups ( P ＜ 0.05 or 0.0l ).During CPB,plasma sufentanil concentration versus the time decay curve in patients undergoing cardiac valve replacement was fitted to a three-compartment model and could be expressed by tri-exponential equations:Cp(t) =22 e-0.51t + 3.5 e-0.045t + 0.21 e-0.0029 t in group Ⅰand Cp(t) =15 e-0.52t + 3.9 e-0.048t + 0.32 e-0.004t in group Ⅱ,respectively.There were no significant differences in pharmacokinetic parameters between the two groups ( P ＞ 0.05).Conclusion There are significant differences in sufentanil phannacokinetic characteristics before CPB but different ages have no obvious influence on sufentanil pharmaco-kinetics during CPB.

AIM: (1) To investigate the effect of amniotic membrane transplantation (AMT) on rabbit conjunctival surface reconstruction with severe alkali burns. (2) To evaluate the possibility of AMT treatment for ocular alkali burns during recovering stage.METHODS: Animal models were established on 30 eyes of rabbits by creating severe alkali burns on the conjunctiva from the upper corneal limbus to the upper conjunctival fornix.Preserved human amniotic membrane transplantations and reconstruction of conjunctival fornix were performed at one week after injury (recovering stage). Epithelium growth of burned area after transplantation was observed using light microscope at 1, 2, 3, 4, and 8 weeks. Conjunctival tissue in transplantation area was collected at 1, 4 and 8 weeks. The ultrastructure of the collected tissue was studied by electron microscope. The results were compared with control group,which received only vitamin C subconjunctival injection and antibiotic eye drops as treatment for alkali burn. Exterior eye pictures were also taken at the end of the observation, the width from upper corneal limbus to the edge of upper fornix was measured. Data was analyzed statistically.RESULTS: 1) Tn the transplant group, conjunctival epithelium growth was observed in the area of AMT under both light and electron microscope 1 week after surgery. At 4weeks, conjunctival epithelium with goblet cells that resembled normal conjunctival tissues was observed in the whole amniotic membrane area. At 12 weeks, the conjunctival epithelium on the amniotic membrane was well formed, and the connective tissue under the epithelium was loose at the fornix. No fibrosis was identified. In contrast, conjunctival epithelium necrosis was observed in the control group at 2weeks after alkali burns. Re-epithelization did not occur through the 12-week observation. Severe fibrosis with inflammatory cells infiltration was observed between 4 to 8weeks. At 12 weeks, fibrosis of the connective tissue at the fornix developed and there were no conjunctival epithelium covering the burned area. 2) In the transplant group, the conjunctiva in transplanted area had no scarring and appeared smooth at 12 weeks. Upper fornix was reconstructed. The depth of fornix was 7.9±0.3mm (7.6-8.2mm), which was approximate to the normal depth 8.2±0.2mm (8.0-8.4 mm,P＞.05). While in the control group, the burned area appeared rough with granuloma formation and severe scarring. Upper fornix became shallow. The depth of fornix was 3.1±1.7mm(1.0 to 4.5mm.), and significant difference was found between control and transplant group (P＜0.01).CONCLUSION: Human amniotic membrane preserved in glycerin can promote cell adhering, migrating and differentiating of normal conjunctival epithelium.Reconstruction of conjunctival surface in early stage of alkali burn can be achieved by AMT. AMT can effectively prevent symblepharon formation.

Objective To describe a novel surgical technique for male long-segment urethral stric- ture after pelvic trauma using the intact and pedieled pendulous urethra to replace the bulbar and membra- nous urethra,and then reconstructing anterior urethra.Methods Three patients with long-segment post- traumatic bulbar and membranous urethral strictures with short left pendulous urethras who had undergone several failed previous surgeries were treated with staged pendulous-prostatic anastomotic urethroplasty fol- lowed by reconstruction of the anterior urethra.This procedure was divided into 3 stages.The first-stage sur- gery was mobilization of anterior urethra down to the coronary sulcus and then re-routing the prostatic urethra followed by pendulous-prostatic anastomotic urethroplasty with transposition of penis to perineum.The sec- ond-stage surgery was transecting the anterior urethra at the site of coronary sulcus 6 months later when it was re-vaseularized,then straightening the penis and performing urethroperineostomy.The third-stage surgery was reconstruction of anterior urethra 6 months later.Results Case 1 reported satisfactory voiding postopera- tively.Retrograde urethrography showed that the urethra was patent with no post-voiding residual urine (PVR),and bilateral vesicoureteral reflux almost disappeared.The Qmax was 18.8ml/s,and 18ml/s after the third stage surgery and at 2-year follow-up.Case 2 also had satisfactory voiding.A 22F urethral catheter could smoothly pass through the urethra,and Qmax was 19.5 ml/s with no PVR at 2-year follow-up.Case 3 underwent the first stage surgery through perineal and pubic routes.The urethrorectal and urethroperineal fis- tulas were excised and repaired simultaneously.After operation the fistulas healed,but the stenostomia resul- ting from wound infection needed further treatment.Conclusions This procedure is effective for men with complex long-segment post-traumatic bulbar and membranous urethral strictures,especially for those undergo- ing failed previous surgical treatment.

OBJECTIVETo investigate the emergency treatment for large amputated ear defect.

METHODSFrom Feb. 2010 to Oct. 2013, 5 cases with large unilateral amputated ear defects were treated. The amputated auricular cartilage was replanted subcutaneously in mastoid area at the first stage. Cranioauricular sulcus was reconstructed and skin grafting was performed at the second stage.

RESULTSAll cases were followed up for 3-6 months with satisfactory result. The reconstructed helix, scapha and cavity of auricular concha had similar color and elasticity as the ear at healthy side. Scar at donor sites, such as inguinal region and armpit, was inconspicuous.

CONCLUSIONSThe method of auricular cartilage replantation is an effective way for emergency treatment of large amputated auricular defect with less morbidity at donor site.

Adolescent ; Adult ; Ear Cartilage ; transplantation ; Ear, External ; injuries ; surgery ; Female ; Follow-Up Studies ; Humans ; Male ; Replantation ; Treatment Outcome ; Young Adult