85,498 research outputs found
Needle for Hand Embroidery and similar Work.
No full textPatent for a hand embroidery needle that allows for easy swapping of different sized points
Needle Sharing and HIV Transmission: A Model with Markets and Purposive Behavior
No full textWithout well designed empirical studies, mathematical models are an important way to use data on needle infection for inferences about human infection. We develop a model with explicit behavioral foundations to explore an array of policy interventions related to HIV transmission among IDU. In our model, needle exchanges affect the spread of HIV in three ways: more HIV-negative IDUs use new needles instead of old ones; needles are retired after fewer uses; and the proportion of HIV-positive IDUs among users of both old and new needles rises owing to sorting effects. The first and second effects reduce the long-run incidence of HIV, while the third effect works in the opposite direction. We compare the results of our model with those of Kaplan and O'Keefe (1993) that is the foundation of many later models of HIV transmission among IDU.
Report of results of pleural biopsy (Needle biopsy and open biopsy) in 108 cases and 245 biopsies
No full text1. The results of 245 pleural biopsies perfomed in 108 patients including 219 pleural needle biopsies and 26 pleural open biopsies were reported. The method of pleural biopsy seems to be superior to any other currently available diagnostic procedures for the etiological diagnosis of pleurisy. 2. When the pleural needle biopsy is compared with the pleural open biopsy, the former method has definite advantages over the open biopsy. The pleural needle biopsy is simple, repeatable and has almost no complication. The method of pleural needle biopsy is the initial method of choice as Donohoe correctly stated and should be employed in every cases of the pleurisy to confirm the etiological diagnosis. The open biopsy should be reserved only for those cases in whom the needle biopsy had not proved satisfactory. 3. Utilizing the method of needle biopsy, the pathological diagnosis was made in 86 per cent of our cases at the initial biopsy. By repeated
needle biopsies, the results have improved to 91-92 per cent. 4. Most of the failures of the pleural needle biopsy were noted at the early stage of the study due to the unfamiliarity of the biopsy technique and later due to the incooperation of the patients. 5. The presence of the free pleural fluid serves as a convenient guide for the performance of the needle biopsy but successful needle biopsy was easily done without presence of pleural fluid when there is adequate pleural thickening. 6. 63-75 per cent of our diagnosed cases were proved to have granulomatous pleuritis, 13-31 per cent non-specific pleuritis and 5.4-5.8 per cent eosinophilic pleuritis due to paragonomiasis. The distribution of this pathological diagnosis seems to reflect quite well the actual picture of incidences of pleurisy of various different etiology in young adults in Korea. 7. The relationship of the success in obtaining adequate tissue by needle biopsy and interval between onset of symptom and biopsy was discussed. It was found that the interval has no significant effect on the production of adequate tissue by needle biopsy if the time elapsed is 4 weeks or more from the onset of symptom. 8. The significance of the pathological findings of ranulomatous pleuritis at one biopsy and non-specific pleuritis at another biopsy in the same patient was discussed. It is concluded that the single finding of nonspecific pleuritis at one needle biopsy cannot rule out the presence of granulomatous pleuritis and it is recommended that pleural biopsy be repeated whenever necessary. 9. The diagnostic significance of the chemical analysis of the pleural fluid was discussed in correlation with the results of the pleural needle biopsies. It is concluded that the number of examinations are not quite sufficient to draw any definite conclusion at the present stage of our study. 10. The finding of sanguinous pleural fluid in the patient of granulomatous pleuritis is quite high (72.7 %) and it was found that the sanguinous pleural fluid was most frequently found in the patients with granulomatous pleuritis in non-cancerous age. 11. Two groups of pleurisy patients with or without parenchymal lung lesion on chest X-ray were discussed in correlation with the results of the needle biopsy. It was found that the incidence of the pathological evidence of granulomatous inflammation on the biopsy specimens in these two groups is almost the same regardless of the presence of the demonstrable parenchymal lung lesion.
12. Histopathological finding of granulomatous pleuritis was discussed in conjunction with the significance of two types of tubercles, the soft tubercles and hard tubercles. In all specimens diagnosed as granulomatous pleuritis granulomas were demonstrated ranging from large, conglomerate tubercles with central caseation or giant cells to small granulomas without central caseation or Langhans' giant cells. 13. Histopathological significance of the finding of non-specific pleuritis on the biopsy specimens was discussed and the existence of a specific entity of "non-specific pleuritis" which is equivalent to the non-specific inflammation of the pericardium. 14. Cases of pleurisy due to paragonomiasis were discussed and the need of specific attention for search of new cases was emphasized.</p
Efficacy of the EZ-IO (R) needle driver for out-of-hospital intraosseous access - a preliminary, observational, multicenter study
No full textBackground: Intraosseous (IO) access represents a reliable alternative to intravenous vascular access and is explicitly recommended in the current guidelines of the European Resuscitation Council when intravenous access is difficult or impossible. We therefore aimed to study the efficacy of the intraosseous needle driver EZ-IO(R) in the prehospital setting.
Methods: During a 24-month period, all cases of prehospital IO access using the EZ-IO(R) needle driver within three operational areas of emergency medical services were prospectively recorded by a standardized questionnaire that needed to be filled out by the rescuer immediately after the mission and sent to the primary investigator. We determined the rate of successful insertion of the IO needle, the time required, immediate procedure-related complications, the level of previous experience with IO access, and operator's subjective satisfaction with the device.
Results: 77 IO needle insertions were performed in 69 adults and five infants and children by emergency physicians (n=72 applications) and paramedics (n=5 applications). Needle placement was successful at the first attempt in all but 2 adults (one patient with unrecognized total knee arthroplasty, one case of needle obstruction after placement). The majority of users (92%) were relative novices with less than five previous IO needle placements. Of 22 responsive patients, 18 reported pain upon fluid administration via the needle. The rescuers' subjective rating regarding handling of the device and ease of needle insertion, as described by means of an analogue scale (0 = entirely unsatisfied, 10 = most satisfied), provided a median score of 10 (range 1-10).
Conclusions: The EZ-IO(R) needle driver was an efficient alternative to establish immediate out-of-hospital vascular access. However, significant pain upon intramedullary infusion was observed in the majority of responsive patients
Demo 19-03 Dip Needle
No full textA dip needle is a compass needle that is allowed to move in a vertical plane. When oriented parallel to the magnetic lines of force of the earth, the dip needle will align itself parallel to the magnetic lines, as shown in Figure 1, which is taken from the accompanying graphics
Failed dural puncture during needle-through-needle combined spinal–epidural anesthesia: a case series
No full textA Ram Doo,1,2 Yu Seob Shin,2,3 Jin-wook Choi,1 Seonwoo Yoo,1 Sehrin Kang,1 Ji-seon Son1,2 1Department of Anesthesiology and Pain Medicine, Chonbuk National University Medical School, Jeonju, South Korea; 2Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, South Korea; 3Department of Urology, Chonbuk National University Medical School, Jeonju, South Korea Objective: Combined spinal–epidural (CSE) anesthesia is a widely used neuraxial anesthetic technique. In clinical practice, failed dural puncture during needle-through-needle technique occasionally occurs, with incidence of 5%–29%. We radiologically evaluated four cases of failed dural puncture during needle-through-needle CSE anesthesia. Case series: Four patients received CSE anesthesia for elective orthopedic surgery. CSE procedures were performed in the same manner using a CSE device for needle-through-needle technique. An epidural needle was inserted in midline at L4/5 interspaces using loss of resistance to air whilst patients lay in the lateral decubitus position. The spinal needle was then inserted through the epidural needle for subarachnoid block, however, negative cerebrospinal flow was identified. Subsequently, radiographic imaging using C-arm fluoroscopy was performed to evaluate the status of needles. We found that epidural needles were considerably deviated from the midline, while spinal needles exited epidural needles, not through back holes, but through the Tuohy curve in three patients. In one patient, when the spinal needle was inserted to 12 mm, the anesthesiologist felt the needle touching the bony structure. The spinal needle was in contact with the superior articular process of the fifth lumbar vertebra, which was confirmed by C-arm radiography. Conclusion: Excessive paramedian deviation of the epidural needle may affect dural puncture during needle-through-needle CSE technique. Moreover, wrong passage of the spinal needle through Tuohy curve instead of the back hole, may contribute to failure of dural puncture. Keywords: combined spinal–epidural anesthesia, dural puncture, fai
Determinants of Drug Injection Behavior: Economic Factors, HIV Injection Risk and Needle Exchange Programs
No full textThis study examines the effects of local cocaine and heroin prices, AIDS rates, and needle exchange programs on drug injection and needle sharing by adult male arrestees in 24 large U.S. cities during 1989 1995. Regressions that control for personal characteristics including income, fixed city and year effects, and city-specific trends indicate that needle exchange programs decrease both injection and sharing. Increases in previous year AIDS prevalence reduce injection by both sharers and non-sharers, leaving the proportion of injectors who share unchanged. Higher cocaine prices lead to less cocaine injection and more sharing, but heroin prices do not effect injection or sharing.
Malignancy risk analysis in patients with inadequate fine needle aspiration cytology (FNAC) of the thyroid
No full textBackground
Thyroid fine needle aspiration cytology (FNAC) is the standard diagnostic modality for thyroid nodules. However, it has limitations among which is the incidence of non-diagnostic results (Thy1). Management of cases with repeatedly non-diagnostic FNAC ranges from simple observation to surgical intervention. We aim to evaluate the incidence of malignancy in non-diagnostic FNAC, and the success rate of repeated FNAC. We also aim to evaluate risk factors for malignancy in patients with non-diagnostic FNAC.
Materials and Methods
Retrospective analyses of consecutive cases with thyroid non diagnostic FNAC results were included.
Results
Out of total 1657 thyroid FNAC done during the study period, there were 264 (15.9%) non-diagnostic FNAC on the first attempt. On repeating those, the rate of a non-diagnostic result on second FNAC was 61.8% and on third FNAC was 47.2%. The overall malignancy rate in Thy1 FNAC was 4.5% (42% papillary, 42% follicular and 8% anaplastic), and the yield of malignancy decreased considerably with successive non-diagnostic FNAC. Ultrasound guidance by an experienced head neck radiologist produced the lowest non-diagnostic rate (38%) on repetition compared to US guidance by a generalist radiologist (65%) and by non US guidance (90%).
Conclusions
There is a low risk of malignancy in patients with a non-diagnostic FNAC result, commensurate to the risk of any nodule. The yield of malignancy decreased considerably with successive non-diagnostic FNAC
Space Needle Restaurant menu, approximately 1962
No full textSpace Needle Restaurant, Seattle, WA.
The Space Needle is distinctive in the Seattle skyline at 603 feet. It was constructed for the 1962 "Century 21" Seattle World's Fair and is still one of Seattle's main attractions today. The Restaurant is near the top of the Needle on the widest part, and revolves once per hour, so patrons watch the entire landscape from their table. The Drink Menu is also round, listing novelty drinks such as "Cloud Buster," "'Round the World" and "Panorama Punch." "The Space Needle" cocktail comes in a Space Needle-shaped container that may be purchased. The reverse of the Drink Menu shows a map of Washington State with the Space Needle at its center. It has compass points around it and small drawings depicting and describing something of interest at every point on the compass, such as "Whidbey Island: Second longest island in the United States" and "Queen Anne Hill: TV Towers and High School" to the North, or "Mt. St. Helens:9,671feet, 165 miles from here" to the South. A patron would align the compass with his/her location and identify the points of interest from the table.
PH Coll 617 Series IV. Restaurants: Seattle:Q-Z.The Sixties Illustrated Menus Novelty Menus Map
muts-needle-plot: Mutations Needle Plot v0.8.0
No full text<p>A needle-plot (aka stem-plot or lollipop-plot) plots each data point as a big dot and adds a vertical line that makes it appear like a needle.</p>
<p>Changelog: v0.8.0 * Optimization for download: Standard styling in SVG, interaction in external .css</p>
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