Polyurethane foam has numerous applications, from furniture to medical field. As a wound dressing creates a moisture environment that promotes epithelialization and diminishes pain. A prospective study was realized to evaluate polyurethane foam efficacy in treating chronic wounds due to venous, arterial or diabetic causes. Our evaluation showed good results with an accelerated epithelialization.
Negative pressure wound therapy is one of the newest methods of treatment used in wound healing. An important role of the system has a foam dressing that connects the wound with the vacuum. In general the sponge used in vacuum assisted therapies is made of polyurethane foam. We present the case of a 51-year-old male patient with a history of deep vein thrombosis (known for about 3 years) diagnosed with necrotizing fasciitis (NF). In this patient, after each step of the surgical treatment (large debridement and skin grafting) negative pressure wound therapy using polyurethane foam was used.
Chronic wounds have a long period of healing, being impeded by numerous factors, as infections. Polyhexanidine is a new broad spectrum antiseptic with non-toxic action which is used lately in wound cleaning solutions. A case control study was realized with two groups of patients treated with silver sulfodiazine and with polyhexanidine, the last group having an accelerated healing evolution. Besides the bactericide action, polyhexanidine has also no cytotoxicity, good tolerability and anti-inflammatory proprieties.
Purpose: To evaluate the influence of Intraocular Lens (IOL) material and design on Posterior Capsule Opacification (PCO) and Neodymium-YAG (Nd-YAG) rates in eyes implanted with different Posterior Chamber Intraocular Lenses (PC IOLs) designs at the end of uncomplicated cataract surgeries. Setting: Oculus Eye Clinic, Bucharest, Romania. Design: Retrospective, observational study. Methods: This study comprised 4805 eyes operated for cataract in 2012 and 2013 with a post-operative average follow up of 40 ± 6,15 months (27-54 months). The PCO and Nd-YAG rates were recorded and compared among different IOL materials and designs and among different pathology groups. Results: From 4805 IOLs implanted, 2560 (53,27%) were hydrophilic and 2245 (45,73%) hydrophobic, 2937 (61%) were aspherical and 1868 (39%) spherical. We found statistical significant differences in the PCO and Nd-YAG rates between hydrophilic (18% and 14% respectively) and hydrophobic lenses (4% and 2% respectively) (p<0.0001). There were also statistically significant differences in the sub-group of hydrophilic aspheric IOLs, finding lower PCO and Nd:YAG rates with the C-loop haptics configuration (12,6% and 3,3% respectively) compared with the broad optic/ haptic junction (29,75% and 24,73% respectively) (p<0.001). No statistically significant differences on PCO and Nd:YAG rates were found for the different associated pathologies (p>0.05). Conclusions: Hydrophilic lenses showed statistically higher PCO and Nd:YAG rates than hydrophobic lenses. In contrast, the optic asphericity and the associated pathologies had no influence on the PCO and Nd:YAG rates. IOL design and material seem to be the main characteristics influencing PCO and Nd-YAG rates.
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