72 research outputs found
Gli effetti sul flusso aereo nasale della turbinoplastica inferiore in corso di rinosettoplastica
La rinoplastica è una procedura chirurgica molto comune e al tempo stesso di elevata complessità. Uno degli aspetti più discussi di tale chirurgia sono gli insoddisfacenti esiti funzionali dovuti spesso ad un eccessivo restringimento dell’area della valvola nasale. Alcune procedure, come la turbinoplastica inferiore, possono favorire la prevenzione di tali problematiche ostruttive. L’intento del presente studio è quello di indagare gli effetti della turbinoplastica inferiore sulla resistenza nasale e sull’ostruzione respiratoria. In 50 pazienti è stata effettuata un’analisi preoperatoria e sei mesi dopo rinoplastica con turbinoplastica inferiore mediante rinomanometria anteriore attiva. Nessuno dei pazienti ha lamentato sintomatologia ostruttiva nasale nel preoperatorio o nel corso del postoperatorio. In accordo con i dati rinomanometrici sia le resistenze inspiratorie che quelle espiratorie hanno presentato valori migliori nel postoperatorio, ma solo le resistenze espiratorie hanno presentato una significatività statistica (p = 0,034). Le differenze in termini di flusso nasale fra maschi, femmine e differenti gruppi di età non sono state significative (p > 0,05). In conclusione dai dati del nostro studio emerge che la rinosettoplastica, associate a turbinoplastica parziale non ha un impatto negativo sulla funzionalità nasale ed in particolare sul flusso aereo attraverso le cavità nasali
A comparative study on the equine and camelid antivenoms upon cardiovascular changes induced with Hemiscorpius lepturus venom in rats
Objective(s): In this study, the neutralizing abilities of the equine and the recently introduced camelid antivenoms on the hemodynamic parameters (inotropism, chronotropism, and arrhythmogenicity) were assessed following envenomation by Hemiscorpius lepturus venom in rats. Materials and Methods: At first, the electrophoretic profiles of both products were obtained by using the SDS-PAGE method (12.5%) and stained with Coomassie blue and silver nitrate. Secondly, different doses of the camelid antivenom (10, 50, and 100 μl) were given intravenously in 10 min before venom injection (400 μg/rat). The neutralizing potencies of camelid and equine antivenoms were measured by preincubation (100 μl) with H. lepturus venom for 30 min at room temperature. Finally, equal amounts of the antivenoms were injected intravenously to observe the hemodynamic changes. Results: Based on the electrophoretic profile, it was evident that undesired proteins significantly decreased in equine antivenom, owing to impurities. Pretreatment with the camelid antivenom (100 μl), neutralized the elevation of the mean arterial pressure evoked with scorpion venom injection (88.15±4.56 versus 10.2±1.23 percent at the 8th min). The Incubation of the venom and the camelid antivenom counteracted the hemodynamic changes, but the equine product had no effect. The intravascular injection of the equine antivenom transiently increased the mean arterial pressure as compared to the control (108.67±8.63 mmHg versus 52.67±1.93 mmHg at the 10th min). Conclusion: The most obvious finding emerging from this study was that the camelid antivenom neutralized the hemodynamic changes in rats significantly, but in comparison, the equine antivenom had just a minor ability
Phytochemical properties of Iranian organic saffron stigma: antioxidant, anticancer and apoptotic approaches
Application of scheduling models for utility management of process plants and its extension to DG networks
Decentralized vs. centralized management of abnormal situations in a multi-plant enterprise using an agent-based approach
10.1016/S1570-7946(10)28204-4Computer Aided Chemical Engineering28C1219-122
Mitigating Supply Disruption for a Global Chemical Supply Chain-Application of Agent-based Modeling
10.1016/B978-0-444-59506-5.50045-6Computer Aided Chemical Engineering311070-107
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