BACKGROUND: Free flap reconstruction was first introduced in 1959 and has since been used for reconstruction of various defects in the head and neck. It has been shown to be the most reliable and efficient way of restoring tissue in the head and neck region secondary to surgical or traumatic defects. It has allowed single stage reconstruction of even complex defects with high flap viability rates. Here in the Philippine setting, free flaps have not been the reconstructive option of choice. It is viewed as a special option for selective cases not amenable to pedicled reconstruction. OBJECTIVE: To describe the experience of one microvascular team in head and neck reconstruction using free flaps from 1996 to March 2004. DESIGN AND SETTING: Retrospective chart review of all patients who underwent free flap reconstruction of head and neck defects from 1996 to March 2004 at six tertiary hospitals in Manila. PATIENTS AND METHODS: Atotal of 69 patients who underwent 71 free-flap reconstructions of the head and neck for various pathologies and with a range of bony and soft tissue defects from 1996 to March 2004 were included in the study. All free flap reconstructions were done by only one microvascular team. The success and viability of free tissue transfer, length of hospital stay, length of operation, complications and morbidities encountered and functional outcome based on length of time to removal of the nasogastric tube and decannulation were reviewed. RESULTS: Of the 71 free flap reconstructions that were performed, 64 flaps were viable leading to an overall success rate of 90 percent. The first 36 cases had a success rate of 86 percent while the subsequent 35 cases had a success rate of 94 percent. Average length of hospital stay was 24 days and the average length of operation was 13 hours 40 minutes. There were 6 mortalities secondary to medical problems and 7 patients had major surgical complications. Twenty-one patients (29 percent) did not have any complication post-operation. Average time post-operation to decannulation was 14 days while return to oral diet was noted at 17 days post-operation. There were 8 patients who were discharged with either a nasogastric tube or percutaneous endoscopic gastrostomy. The results are at par with the review of literature reviewed. CONCLUSIONS: The success of the use of free flaps in head and neck reconstruction was demonstrated in this series. There were minimal complications noted. All patients were decannulated with majority able to return to an oral diet. (Author)
HEAD NECK

OBJECTIVE: To design a cost effective, handy, easy to fabricate, ergonomic nasal speculum with a built-in light source. DESIGN: Instrumentation SETTING: Tertiary Government Hospital MATERIALS AND METHODS: Two 3cc syringes were mounted on each side of a nasal speculum to serve as battery cases for the two 1.5 volts battery. A laryngoscope bulb, connected to a metallic plate, made from the two long arms of a paper fastener, was then suspended from the speculum screw, with the bulb positioned in between the speculum blades. An electric wire connected the batteries and the metallic plate. The upper negative pole wire was connected to a ballpen spring and was glued near the fulcrum. The device illuminates automatically with opening of the speculum blades. RESULTS: Nasal speculite provided comparable visualization of the nasal cavity as that with a nasal speculum with head mirror and light source. The illumination was adequate and there was no more need for light focusing. There were no complaints of discomfort from the subjects. CONCLUSION: The Nasal speculite is a cost effective, handy, easy to fabricate ergonomic instrument that can be used by the ENT specialist at his/her own convenience, obviating the need for head mirrors and light source, in the examination of the nasal cavities. (Author)
NASAL CAVITY SURGICAL INSTRUMENTS

The aim of this work was to study radiation and the effects of temperature on conductivity properties of polyvinyl alcohol (PVA)-based potassium hydroxide (KOH) and propylene carbonate (PC), where the ionic conduction preferentially occurs in the amorphous phase by free radicals ions through gamma-irradiation. Alkaline composite polymer electrolyte (ACPE) consisting of PVA, KOH and PC of different concentration ratios were prepared by solvent-casting technique. The ACPE were irradiated with different doses from 5 kGy up to 200 kGy. The conductivity properties of the electrolyte films were measured at different frequencies in the range 20 Hz to 1 MHz using LCR meter. The results showed that the conductivity properties were dependent on the radiation dose, temperature and the concentration of the polymer blends.
Radiation ; asparaginase/prednisone/vincristine ; Personal Computers ; Temperature ; Concentration

p style=text-align: justify;strongOBJECTIVE:/strong To evaluate the necessity of placing a drain in post-thyroidectomy patients, we aimed to determine whether insertion of a passive drain as compared to no drain in post-thyroidectomy patients would significantly affect hematoma formation, wound infection, wound dehiscence and length of hospital stay.METHODS:br /Design:/strong Prospective randomized controlled trialbr /strongSetting:/strong Tertiary government training hospitalbr / strongSubjects:/strong Patients who underwent thyroidectomy for various pathologies were divided into two postoperative treatment arms: one group with insertion of a passive drain, and another group without a drain. Hematoma, wound infection, wound dehiscence and length of hospital stay were the outcomes measured per treatment arm.RESULTS:/strong A total of 66 patients were evaluated. There were 54 females (81.81%) and 12 males (18.18%). The mean age for the drain group was 44.88 years and 43.67 years for the no drain group. Four patients developed complications in the drain group and two developed complications in the no drain group. The rate of complications between both groups was not statistically significant. The mean hospital stay of the drain group was 3.15 days which in the no drain group was 2.51 days. The difference in length of hospital stay was statistically significant.CONCLUSIONS:/strong There was no difference in the development of complications among the drain and no drain group. Thyroidectomy without surgical drains was associated with a significant reduction in hospital stay compared to thyroidectomy with routine placement of drains./p
Human ; Male ; Female ; Aged 80 and over ; Aged ; Middle Aged ; Adult ; Thyroid Diseases ; Thyroidectomy-surgery ; Drainage ; Postoperative Care ; Thyroid Gland ; Postoperative Complications ; Hematoma

High-quality DNA extraction is a crucial step in metagenomic studies.Bias by different isolation kits impairs the comparison across datasets.A trending topic is,however,the analysis of multiple metagenomes from the same patients to draw a holistic picture of microbiota associated with diseases.We thus collected bile,stool,saliva,plaque,sputum,and conjunctival swab samples and performed DNA extraction with three commercial kits.For each combination of the specimen type and DNA extraction kit,20-gigabase(Gb)metagenomic data were generated using short-read sequencing.While profiles of the specimen types showed close proximity to each other,we observed notable differences in the alpha diversity and composition of the microbiota depending on the DNA extraction kits.No kit outperformed all selected kits on every specimen.We reached consistently good results using the Qiagen QiAamp DNA Microbiome Kit.Depending on the specimen,our data indicate that over 10 Gb of sequencing data are required to achieve sufficient resolution,but DNA-based identification is superior to identification by mass spectrometry.Finally,long-read nanopore sequencing confirmed the results(correlation coefficient＞0.98).Our results thus suggest using a strategy with only one kit for studies aiming for a direct comparison of multiple microbiotas from the same patients.