OBJECTIVE To explore the predisposing factors of pharyngo-cutaneous fistulas after surgical treatment of laryngeal cancer. METHODS A retrospective study of 757 patients who underwent laryngectomy during a 10-year period was carried out. RESULTS The occurrence rate of post-laryngectomy pharyngo-cutaneous fistula was 4.2 %. Single-factor analysis showed that parameters related to the occurrence rate of post-laryngectomy pharyngo-cutaneous fistula included clinical stage of tumor, appearance of post-operative infection, undergoing of pre-operative radiotherapy, and pre-operative nutrition states. CONCLUSION Pharyngo-cutaneous fistulas appears more frequently in patients with T3 and T4 tumor and who underwent pre-operative radiotherapy. Skillful operative technique and effective prevention of post-operative infection may contribute toward reducing the incidence of pharyngo-cutaneous fistulas after surgical treatment of laryngeal cancer.

Adult ; Arterio-Arterial Fistula ; complications ; Coronary Vessels ; pathology ; Embolization, Therapeutic ; Humans ; Male ; Myocardial Ischemia ; etiology ; therapy ; Pulmonary Artery ; pathology

Brain-computer interface (BCI) system is a system that achieves communication and control among humans and computers and other electronic equipment with the electroencephalogram (EEG) signals. This paper describes the working theory of the wireless smart home system based on the BCI technology. We started to get the steady-state visual evoked potential (SSVEP) using the single chip microcomputer and the visual stimulation which composed by LED lamp to stimulate human eyes. Then, through building the power spectral transformation on the LabVIEW platform, we processed timely those EEG signals under different frequency stimulation so as to transfer them to different instructions. Those instructions could be received by the wireless transceiver equipment to control the household appliances and to achieve the intelligent control towards the specified devices. The experimental results showed that the correct rate for the 10 subjects reached 100%, and the control time of average single device was 4 seconds, thus this design could totally achieve the original purpose of smart home system.
Brain-Computer Interfaces ; Electroencephalography ; Evoked Potentials, Visual ; Humans ; Microcomputers ; Wireless Technology

Acupuncture Therapy ; Adult ; Aged ; Combined Modality Therapy ; Female ; Humans ; Male ; Middle Aged ; Moxibustion ; Punctures ; Tennis Elbow ; therapy ; Treatment Outcome

Objective:To explore the feasibility and superiority of retropubic extraperitoneal laparosco-pic simple prostatectomy with prostatic urethra preservation to treat large volume benign prostatic hyperplasia(BPH).Methods:From January 2006 to August 2009,laparoscopic simple prostatectomy with prostatic urethra preservation was performed in 45 patients with symptomatic BPH,and the age of patients was 70.5?7.2(range 47 to 83) years old.The transrectal ultrasound(TRUS) revealed BPH and calculated prostatic gland weight was 126.1?52.4(range 62 to 365) g.There were 3 cases presented with bladder calculus and 1 case presented with bladder diverticulum.The technique included retropubic extraperitoneal space produced by balloon dilation,five trocars in a reverted U shape placed,transverse prostatic capsular incision made,subcapsular plane developed,prostatic adenoma removed while prostatic urethra preserved as well as prostatic capsule sutured.Demographic,perioperative and outcome data were recorded.Results:No patient required conversion to open surgery.The mean operative time was 123.9?51.3(range 37 to 270) minutes and the estimated blood loss was 230.6?194.5(range 50 to 800) mL.Blood transfusion was not necessary in this group of patients.Bladdder irrigation was not needed except for the initial 2 cases and the average Foley catheter duration was 7.5?3.5(range 2 to 14) days.Significant improvement was noted in the maximum flow rate,the International Prostate Score Symptoms(IPSS) and the quality of life questionnaires(QOL) three months after surgery.The erectile function was preserved in all patients who were potent before surgery and the ejaculation maintained antegrade.No urinary incontinence was reported by patients.Conclusion:Laparoscopic simple prostatectomy with prostatic urethra preservation for large benign prostatic hyperplasia is feasible and reproducible.Postoperative bladder irrigation can be avoided and antegrade ejaculation is preserved.The patients have a shorter hospital stay and early return to normal activity.

AIM: To observe the effect of intravenous methylprednisolone combined with peri - orbital injection of triamcinolone acetonide for diffuse - type orbital inflammatory pseudotumor.
METHODS: Diffuse - type orbital inflammatory pseudotumor in 15 cases ( 19 eyes ) were treated. Intravenous implosive methylprednisolone therapy (0. 5g/ d) was used in the first 3d, and 0. 5g once a week in the following 3wk, ended by 0. 25g once a week in the last 6wk, which meant the total dose was 4. 5g and the whole course lasted for 10wk. At the same time, peri - orbital injection of triamcinolone acetonide ( 40mg ) was performed once in every 3wk, totally 2-4 times.
RESULTS: Eight eyes from 7 cases were completely cured, 11 eyes from 8 cases were partly cured. No recurrence and severe complications were observed in the treatment duration.
CONCLUSION: Intravenous methylprednisolone combined with peri - orbital injection of triamcinolone acetonide is effective, safe and feasible in treatment of diffuse type orbital pseudotumor with less complications.

Animals ; Apoptosis ; radiation effects ; Electromagnetic Fields ; adverse effects ; Hippocampus ; pathology ; radiation effects ; Male ; Maze Learning ; radiation effects ; Rats ; Rats, Wistar

Silicon carbide (SiC) ceramic with YAG (Y3Al5O12) additive added by sol-gel method was liquid-phase sintered at different sintering temperatures, and the sintering mechanism and microstructural characteristics of resulting silicon carbide ceramics were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and elemental distribution of surface (EDS). YAG (yttrium aluminum garnet) phase formed before the sintering and its uniform distribution in the SiC/YAG composite powder decreased the sintering temperature and improved the densification of SiC ceramic. The suitable sintering temperature was 860 ℃ with the specimen sintered at this temperature having superior sintering and mechanical properties, smaller crystal size and fewer microstructure defects. Three characteristics of improved toughness of SiC ceramic with YAG added by sol-gel method were microstructural densification, main-crack deflection and crystal ‘bridging'.

An ancient genome duplication (PPP1) that predates divergence of the cereals has recently been recognized. We report here another potentially older large-scale duplication (PPP2) event that predates monocot-dicot divergence in the genome of rice (Oryza sativa L.), as inferred from the age distribution of pairs of duplicate genes based on recent genome data for rice. Our results suggest that paleopolyploidy was widespread and played an important role in the evolution of rice.
Biological Evolution ; Chromosome Mapping ; methods ; Evolution, Molecular ; Genetic Variation ; genetics ; Genome, Plant ; Oryza ; genetics ; Polyploidy

An ancient genome duplication (PPP 1) that predates divergence ofthe cereals has recently been recognihere another potentially older large-scale duplication (PPP2) event that predates monocot-dicot divergence in the genome of rice (Oryza sativa L.), as inferred from the age distribution of pairs of duplicate genes based on recent genome data for rice. Our results suggest that paleopolyploidy was widespread and played an important role in the evolution of rice.