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Teoretično izhodišče: Za zmanjševanje zdravstvenega tveganja vseh prisotnih v operacijski dvorani je potrebno odsesavanje anestezijskih plinov iz dihalnih sistemov. Osrednji namen študije je bil raziskati, kako je izvedeno odsesavanje iz linearnih dihalnih sistemov. Metodologija raziskovanja: Kvantitativno eksperimentalno študijo smo izvedli v simulacijskem okolju, kjer smo merili ustrezne tlake in pretoke znotraj sistemov odsesavanja. Uporabili smo analizator plinov Fluke VT plus HP in Dräger SAMOS basic. Eksperimente smo izvajali na anestezijski delovni postaji Dräger Primus in na Mapleson linearnih sistemih proizvajalca Intersurgical. V kliničnem okolju smo preverili, kakšno je obstoječe stanje na področju odsesavanja anestezijskih plinov. Rezultati raziskave: Ugotavljamo, da se v kliničnem okolju največkrat uporablja aktivni sistem odsesavanja. Varnostno komponento predstavlja merilec vleka v obliki plavača ter filter za prašne delce, ki ga nekatere različice imajo, druge pa ne. Pri linearnem dihalnem sistemu je novost na tržišču sistem z varnostnim ventilom, ki se priključi na sprejemni sistem in odpre pri tlaku 5 cm H2O. Vlek v sprejemni sistem se je gibal med 47 in 50 l/min. Sklep: Zaradi zamašenega filtra lahko kontaminiramo operacijsko dvorano predvsem pri uporabi funkcije visokih pretokov izpiranja (O2 FLUSH). Sklenemo lahko, da za učinkovito odsesavanje iz linearnih sistemov potrebujemo sprejemni sistem z dodatno spojko (30 mm), na katero lahko priključimo prenosni sistem, le-tega pa na APL ventil preko varnostnega ventila. Background: efficient eliminating of waste anesthetic gases from anesthetic breathing systems is essential for reducing healthy hazards of all attendants in operating theatres. The main objective of the study was to analyze elimination of waste anesthetic gases in linear breathing systems. Materials and methods: We performed an experimental quantitative study with pressure and flow measurments in linear breathing system in the simulation laboratory. We used gas flow analyzers Fluke VT plus HF and Dräger SAMOS basic. Experiments were performed on anesthesia apparatus Dräger Primus and Mapleson linear breathing system manufactured by Intersurgical Ltd. We also revised clinical practise in our hospital for anesthesia gas scavenging. Results: In our clinical practise we mostly use an active scavenging system. The safety components in breathing systems are bowl with suction indicator (floating ball) and a dust filter, not present in all available versions. In linear breathing systems a new safety feature was recently introduced. The safety valve can be attached to the collecting system that opens at the pressure of 5 cm H2O. The flow to the collecting system was measured between 47 and 50 l/min. Conclusions: Blocked dust filter could be responsible for polluting the operating room especially when high flows are used (O2 FLUSH). We can assume that efficient and safe scavenging of waste anesthesia gases requires a collecting system with an additional conector (30 mm) for a transfer system that is attached to the APL-valve over an additional safety valve. |
