TY - JOUR N2 - The purpose of the studies was to estimate efficiency of delivering nebulised drugs into the lower respiratory tract through endotracheal tubes (ET tubes) which are commonly used in the treatment of uncooperative patients. Water solution of Disodium Cromoglycate (DSCG) was nebulised with a constant air flow (25 l/min). Experimental studies were done for eight ET tubes with varying sizes (internal diameter, length) and made of two different materials. Size distribution of aerosol leaving ET tubes was determined with the use of aerosol spectrometer. Fine Particle Fraction (FPF) and Mass Median Aerodynamic Diameter (MMAD) were calculated for the aerosol leaving each tube. Additionally, mass of the Disodium Cromoglycate deposited into each endotracheal tube was determined. ET tubes can significantly influence the parameters of delivered aerosol depending on their diameter. FPF of aerosol delivered in to the respiratory tract is lower if small endotracheal tubes are used. However, MMAD and FPF for large endotracheal tubes are almost identical with MMAD and FPF from nebuliser. The results indicate that a substantial fraction of large droplets is eliminated from the aerosol stream in long endotracheal tubes (270 mm). In this case the mass of drug delivered through ET tubes is reduced but the content of small droplets increases (high value of FPF). L1 - http://www.czasopisma.pan.pl/Content/84804/PDF/17-paper-Penconek.pdf L2 - http://www.czasopisma.pan.pl/Content/84804 PY - 2012 IS - No 4 December EP - 696 DO - 10.2478/v10176-012-0058-2 KW - aerosol therapy KW - drug delivery KW - size distribution KW - deposition KW - endotracheal tube A1 - Moskal, Arkadiusz A1 - Penconek, Agata A1 - Odziomek, Marcin A1 - Niedzielska, Agata PB - Polish Academy of Sciences Committee of Chemical and Process Engineering DA - 2012 T1 - Delivery of Nebulised Drugs using Endotracheal Tube SP - 689 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/84804 T2 - Chemical and Process Engineering ER -