Deflexión de agujas dentales 30G: comparación de cinco marcas comerciales / Deflection of dental needles 30G: comparison of five trademarks

Abstract Introducción: El grado o nivel de deflexión de la aguja dental, en la mayoría de los casos, puede determinar el éxito o fracaso en la técnica de anestesia dental. Objetivo: Medir el grado de deflexión de la aguja dental, comparando 5 diferentes marcas disponibles en la ciudad de Hermosillo, Sonora, México. Métodos: Se realizó un estudio experimental, en el que con ayuda de un modelo creado con un nivel profesional y una jeringa tipo cárpul, se realizaron diversas punciones en un trozo de carne de res, simulando la realización de una técnica lineal de anestesia bucodental. Se tomaron radiografías periapicales de cada una de las punciones, y con ayuda de una malla milimetrada, se realizaron las mediciones. Dentro de cada grupo de agujas, se presentaron diferentes medidas de deflexión, y se obtuvo un promedio de cada marca. El rango abarcó desde los .65 mm hasta 2.1 mm de deflexión, tomando como referencia un plano recto. Conclusiones: Se demostró que la de la marca Septodont®, fue la que presentó menor deflexión a la punción. Es recomendable verificar y examinar el estado de las agujas antes de ser utilizadas para realizar procesos quirúrgicos, y así disminuir riesgos y/o complicaciones postoperatorias.

Resumen Introduction: The degree or level of deflection of the dental needle, in most cases, can determine the success or failure of the dental anesthesia technique. Objective: Measure the degree of deflection of the dental needle, comparing 5 different brands available in the city of Hermosillo, Sonora, Mexico. Method: An experimental study was carried out, with a model created with a professional level and a carpul syringe, various punctures were made in a piece of beef, simulating the performance of a linear technique of oral anesthesia. Periapical radiographs of each of the punctures were taken, and with the help of a millimeter mesh, measurements were made. Within each group of needles, different deflection measures were presented, and an average of each brand was obtained. The range ranged from .65 mm to 2.1 mm of deflection, taking as reference a straight plane. Conclusions: It was shown that the Septodont® brand was the one that presented the lowest puncture deflection. It is advisable to verify and examine the condition of the needles before being used to perform surgical procedures, and thus reduce risks and / or postoperative complications.

A Case of a Corneal Stromal Penetrating Injury via an Ejected Needle during Stromal Hydration

PURPOSE: We report a case of a horizontally penetrating injury of corneal stroma via an ejected irrigating needle during stromal hydration in cataract surgery. CASE SUMMARY: A 79-year-old woman presented with decreased visual acuity in her right eye. Her best corrected visual acuity in the right eye was 0.3. The cataract score of her right eye was nuclear opacity 3, cortical opacity 1−2, and posterior subcapsular opacity 1. She underwent phacoemulsification using a clear corneal approach while under topical anesthesia, and an intraocular lens was successfully implanted in the bag. A plastic syringe with an irrigating needle was used to hydrate the corneal stroma at the clear cornea site. As a result of the increased pressure applied to the connection between the syringe and irrigating needle, the loosened irrigating needle was forcefully ejected toward the corneal endothelium, horizontally penetrating the stroma without injuring the corneal epithelium. On the 1st postoperative day, her right eye exhibited a visual acuity of 0.5, astigmatism of −1.25 diopter (D) cyl., corneal edema with Descemet's folds, and insignificant scarring of the corneal endothelium. Three weeks after surgery, the visual acuity was 0.9, the astigmatism was −0.50 D, and any other abnormalities such as corneal opacity were no longer present. CONCLUSIONS: Despite a penetrating needle injury through the corneal endothelium and stroma, the corneal wound healing process did not result in corneal opacity or worsened astigmatism. To prevent sequela due to an ejected irrigating needle, operators and assistants should be actively aware of tight locking between the needle and syringe.

Deflexión de agujas dentales 30G: comparación de cinco marcas comerciales

Introducción: El grado o nivel de deflexión de la aguja dental, en la mayoría de los casos, puede determinar el éxito o fracaso en la técnica de anestesia dental. Objetivo: Medir el grado de deflexión de la aguja dental, comparando 5 diferentes marcas disponibles en la ciudad de Hermosillo, Sonora, México. Métodos: Se realizó un estudio experimental, en el que con ayuda de un modelo creado con un nivel profesional y una jeringa tipo cárpul, se realizaron diversas punciones en un trozo de carne de res, simulando la realización de una técnica lineal de anestesia bucodental. Se tomaron radiografías periapicales de cada una de las punciones, y con ayuda de una malla milimetrada, se realizaron las mediciones. Dentro de cada grupo de agujas, se presentaron diferentes medidas de deflexión, y se obtuvo un promedio de cada marca. El rango abarcó desde los .65 mm hasta 2.1 mm de deflexión, tomando como referencia un plano recto. Conclusiones: Se demostró que la de la marca Septodont®, fue la que presentó menor deflexión a la punción. Es recomendable verificar y examinar el estado de las agujas antes de ser utilizadas para realizar procesos quirúrgicos, y así disminuir riesgos y/o complicaciones postoperatorias.

Introduction: The degree or level of deflection of the dental needle, in most cases, can determine the success or failure of the dental anesthesia technique. Objective: Measure the degree of deflection of the dental needle, comparing 5 different brands available in the city of Hermosillo, Sonora, Mexico. Method: An experimental study was carried out, with a model created with a professional level and a carpul syringe, various punctures were made in a piece of beef, simulating the performance of a linear technique of oral anesthesia. Periapical radiographs of each of the punctures were taken, and with the help of a millimeter mesh, measurements were made. Within each group of needles, different deflection measures were presented, and an average of each brand was obtained. The range ranged from .65 mm to 2.1 mm of deflection, taking as reference a straight plane. Conclusions: It was shown that the Septodont® brand was the one that presented the lowest puncture deflection. It is advisable to verify and examine the condition of the needles before being used to perform surgical procedures, and thus reduce risks and / or postoperative complications.

Lymphangiectatic Pilomatricoma Following an Intramuscular Injection / 대한피부과학회지

No abstract available.

Effect evaluation of safety closed indwelling needle on prevention of needle injury / 中国实用护理杂志

Objective To investigate the application effect of safety closed indwelling needle in pediatric transfusion.Methods A total of 500 cases from a pediatric respiratory ward were randomly divided into two groups:the Y-type indwelling needle group and the injury prevention group,each group contained 250 cases.The incidence of needle injury,success rate of puncture,length of indwelling,the condition of prolapse,obstruction and exosmosis were observed.Results The differences of the incidence of needle injury,success rate of puncture,length of indwelling,the condition of prolapse,obstruction and exosmosis in two groups were not statistically significant,the success rate of puncture depended on the vessel condition and the needle type,safety closed indwelling needle could completely avoid the incidence of needle injury.Conclusions Safety closed indwelling needle can avoid needle injury,which should be widely used in clinic.

Unrecognized intraneural injection as a possible cause of nerve injury associated with axillary block : A case report

A 71-year-old man who had a laceration on his right fifth finger underwent an emergency explorative operation under brachial plexus block that was performed by using transaxillary artery technique.During axillary block, no elicitation of paresthesia was presented.Postoperatively he complained numbness on his right arm along the dermatome of 7th cervical nerve distribution.Two weeks later the evidence of nerve injury was found on EMG and NCV carried by the department of neurology. Observing closely for another two weeks, the symptoms and signs were gradually improved.On 42nd postoperative day, the patient complained no neurologic problems and the findings of EMG and NCV returned to normal.Considering the method of anesthesia, operation time, tourniquet time and patient position, we conclude that the direct needle injury and intraneural injection during axillary block are the highly suggestive causes of nerve injury.

Unrecognized intraneural injection as a possible cause of nerve injury associated with axillary block : A case report

A 71-year-old man who had a laceration on his right fifth finger underwent an emergency explorative operation under brachial plexus block that was performed by using transaxillary artery technique.During axillary block, no elicitation of paresthesia was presented.Postoperatively he complained numbness on his right arm along the dermatome of 7th cervical nerve distribution.Two weeks later the evidence of nerve injury was found on EMG and NCV carried by the department of neurology. Observing closely for another two weeks, the symptoms and signs were gradually improved.On 42nd postoperative day, the patient complained no neurologic problems and the findings of EMG and NCV returned to normal.Considering the method of anesthesia, operation time, tourniquet time and patient position, we conclude that the direct needle injury and intraneural injection during axillary block are the highly suggestive causes of nerve injury.

Investigation of Needlestick Injury in Medical care workers / 中华医院感染学杂志

OBJECTIVE To study the risk factors and control measures for needle injury,so that to provide relevant information for epidemiological studies of needle injury.METHODS The Needle injury of the worker′s age,type,location,operation links,workload and the spread exposed source were investigated,in the medical staff from Jan 2005 to Dec 2007 including 155 cases of needle injury(125 medical staff).RESULTS The survey showed that the risk factors of needle injury were short working age,lack understanding of needle injury,needles being putted cap back again,naked needles and busy working.CONCLUSIONS The control measures for Needle injury are to strengthen occupational training,dispose contaminated needles timely,avoid needles being naked,forbid needles being putted cap back again,and assign people reasonably.