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Compressed air injury causing pneumo-orbit and xanthopsia
... In rare cases, OA may be serious because of a significant increase in intraocular pressure that may result in occlusion of the central artery of the retina or optic nerve compression neuropathy [12]. ...
Orbital emphysema is typically a benign condition that occurs following forceful injection of air into the orbital soft tissue spaces. The authors report a frequent case of post traumatic orbital emphysema, we insist on the clinical aspects, radiological and therapeutic, and on the complications of this benign pathology.
... L'EO est souvent bénin et transitoire [5] se résorbant spontanément dans un délai variable (quelques jours le plus souvent, mais peut persister durant des semaines [6]) sans laisser de séquelles [7]. Dans de rares cas, l'EO peut être gave en rapport à une augmentation importante de la pression intraoculaire pouvant entraîner une occlusion de l'artère centrale de la rétine ou une neuropathie par compression du nerf optique [8]. Tous ces mécanismes vont contribuer, à des degrés variables, à la baisse de l'acuité visuelle objectivée au cours des stades avancés de la pneumorbitie. ...
In this study, pure, Zn, Cu, Zn,Cu co-doped WO3 nanoparticles samples were prepared by precipitation and co-precipitation methods. These nanoparticles were characterized by field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), energy dispersive X-ray spectrometer (EDX), Dynamic light scattering (DLS), UV–visible and photoluminescence (PL) spectroscopy. The synthesized pure, Zn, Cu, Zn,Cu co-doped WO3 nanoparticles have smart optical properties and average sizes with 3.2, 3.12, 3.08 and 2.97 eV of band-gap, 18.1, 23.2, 25.7 and 30.2 nm, respectively. Photocatalytic activity of four nanoparticles was studying towards degradation of gentamicin antibiotic under ultraviolet and visible light irradiation. The result showed that Zn,Cu co-doped WO3 possessed high photocatalytic activity. The photocatalytic activity of WO3 nanoparticles could be remarkably increased by doping the Zn and Cu impurity. This can be attributed to the fact that the red shift of absorption edge and the trapping effect of the mono and co-doped WO3 nanoparticles. The research result presents a general and effective way to prepare different photocatalysts with enhanced visible and UV light-driven photocatalytic performance. Antibacterial activity of four different WO3 nanoparticles against Escherichia coli bacterium has been assessed by the agar disc method under light irradiation and dark medium. It is concluded from the present findings that WO3 nanoparticles can be used as an efficient antibacterial agent.
We have successfully grown a-axis-oriented p-type BaSi2 films on Si(111) by in situ boron (B) doping using molecular beam epitaxy (MBE). The hole concentration in B-doped BaSi2 was controlled in the range between 1017 and 1019 cm−3 at room temperature by changing the temperature of the B Knudsen cell crucible. The acceptor level was estimated to be approximately 23 meV.
Background
Laparoscopic colorectal resection has been gaining in popularity over the past two decades. However, studies about laparoscopic rectal surgery in elderly patients with long-term oncologic outcomes are limited. In this study, we evaluated the short-term and long-term outcomes of laparoscopic and open resection in patients with rectal cancer aged 70 years and older.
Methods
From 2007 to 2012, a total of 294 consecutive patients with rectal cancer from a single institution were included, 112 patients undergoing laparoscopic rectal resection were compared with 182 patients undergoing open rectal resection.
Results
Seven(6.3%) patients in the laparoscopic group required conversion to open surgery. The two groups were well balanced in terms of age, gender, body mass index (BMI), American society of anesthesiologists (ASA) scores, site and stage of the tumors. Laparoscopic surgery was associated with significantly longer median operating time (220 vs 200min; P=0.005), less estimated blood loss(100 vs 150ml; P＜0.001), a shorter postoperative hospital stay (8 vs 11days), lower overall postoperative complication rate(15.2% vs 26.4%; P=0.025) and wound-related complication rate(7.14% vs 17.03%; P=0.015), less need of blood transfusion(8.04% vs 16.5%; P=0.038) and surgical intensive care unit(SICU) after surgery(12.5% vs 22.0%; P=0.042) when compared with open surgery. Mortality, quality of surgical specimen, lymph nodes harvested, positive distal and circumferential margin rate were not significantly different between two groups. The estimated 3-year survival rates were similar between two groups.
Conclusions
Laparoscopic rectal surgery is safe and feasible in patients older than 70 years and is associated with better short-term outcomes when compared with open surgery.
Air at 75 lbs/sq in from an air compressor hose struck a 19-year-old man in his right eye. Injected through a superior conjunctival laceration, the air entered subcutaneous, mediastinal, and bilateral orbital and intracranial spaces. High-resolution computed tomography scanning of the head and orbits revealed air adjacent to the right optic nerve throughout the orbit. We hypothesize that air was injected intracranially, but extradurally, through the superior orbital fissure. The patient suffered no visual loss.
A six-year-old boy who developed optic atrophy after an injury with the inner tube stem of a truck tire is described. The air stem penetrated the inferonasal portion of the left orbit and discharged air. The patient presented for evaluation within one hour and had no light perception in the involved eye. Computed tomography of the orbit revealed multiple small air bubbles surrounding the optic nerve sheath without direct optic nerve edema. It is postulated that the etiology of optic atrophy is related to the air surrounding the optic nerve, which interrupted its vascular supply. Proper covering of the air stem can prevent similar accidents.
- M I Khan
M.I. Khan et al. / Injury Extra 42 (2011) 11–12