نتایج جستجو برای: needle
تعداد نتایج: 39478 فیلتر نتایج به سال:
background in surgical pathology, atypical small acinar proliferation is commonly detected in prostate biopsies. most studies on atypical small acinar proliferation have examined morphological characteristics and the utility of immunohistochemical studies.however, these resources are not available to many pathology departments. we have found that examining additional sections is a simple and in...
BACKGROUND Atrial fibrillation (AF) ablation requires transseptal puncture to gain entry to the left atrium (LA). On rare occasions, LA entry cannot be achieved or cardiac perforation results in pericardial tamponade. OBJECTIVE This study sought to compare a new radiofrequency (RF) transseptal needle with the standard needle. METHODS We evaluated 1,550 AF ablations in 1,167 patients. We com...
Background and aims: One of the most important and preventable hazard related to Healthcare Workers (HCWs) are Needle Stick Injuries (NSI). Biologic outcomes of these injuries can be so hazardous and can cause to transmission of disease such as AIDS, Hepatitis B and C. The aim of this study was determination of occupational exposure to needle stick and its risk factors in one of Sabzevar’...
The tip asymmetry of a bevel-tip needle results in the needle naturally bending when it is inserted into soft tissue. This enables robotic needle steering, which can be used in medical procedures to reach subsurface targets inaccessible by straight-line trajectories. However, accurate path planning and control of needle steering requires models of needle-tissue interaction. Previous kinematic m...
OBJECTIVE The study was designed to compare the insertion characteristics and incidence of PDPH between 25 gauge Quincke needle and 26 gauge Eldor needle for spinal anaesthesia in elective c/s. METHOD 60 pregnant women (aged 19-35 yrs and weighing 58 -67 kg) undergoing elective caesarean section were randomized into group A (Quincke spinal needle group) or group B (Eldor spinal needle group)....
Background & Aims of the Study: The Sharp Injuries (SIs) are a percutaneous piercing wound caused by a sharp instrument. Needle Sticks and Sharp Injuries (NSSIs) can increase the incidence of cases of Hepatitis B, C and HIV. The purpose of this study was to Investigation of the relative frequency of NSSIs in healthcare workers (HCWs) in Ahvaz, Iran (Razi hospital) over 3-year p...
BACKGROUND Controversy exists over whether or not single-needle liver biopsies are sufficient to compare histological parameters in patients with non-alcoholic fatty liver disease. AIMS To identify sampling variability, we biopsied four liver specimens per patient, based on biopsy size (needle vs wedge) and location (left vs right lobe), immediately prior to bariatric Roux-en-Y gastric bypass...
Introduction. In traditional Chinese acupuncture, needle sensation (deqi) is purported to contribute to a therapeutic outcome. While researchers have attempted to define deqi qualitatively, few have examined the effects of needling parameters on its intensity. Methods. 24 healthy subjects completed eight interventions scheduled at least one week apart, which involved manual acupuncture to LI4 o...
BACKGROUND AND PURPOSE The aim of CT-guided CTSI is to inject medication into the foraminal region where the nerve root is inflamed. The optimal location for needle placement and therapeutic delivery, however, remain uncertain. The purpose of this study was to investigate how needle positioning and angle of approach impact the transforaminal distribution of injectate. MATERIALS AND METHODS We...
Placebo control is a useful method for determining the efficacy of a therapy. In acupuncture researches, the preferred method for placebo control is acupuncture using a placebo needle that has a blunt tip and achieves no skin penetration. We performed a crossover study to validate the blinding effect of a new type of placebo needle. Sixty volunteers were randomized to receive acupuncture using ...
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