BACKGROUND: No currently used tracheal tube offers full protection against aspiration of oropharyngeal secretions into the lower airways. OBJECTIVE: We developed a tracheal tube equipped with two polyvinylchloride (PVC) cuffs with a supplementary port opening between the cuffs through which a continuous positive pressure of 5 cmH2O is provided [double-cuffed PVC (PVCdc)]. We compared this PVCdc with four different cuff types (cylindrical PVC, conical PVC, cylindrical polyurethane and conical polyurethane). DESIGN: A comparison study using an in-vitro benchtop model of an artificial rigid trachea. INTERVENTIONS: Tracheal tubes were placed in the artificial trachea. Both cuffs were kept inflated at 25 cmH2O. Total 3 ml dyed water was placed above the cuff and leakage recorded under static and dynamic [5 cmH2O positive end-expiratory pressure (PEEP) alone or positive pressure ventilation plus 5 cmH2O PEEP] conditions. At the end of the dynamic experiments, PEEP was zeroed (PEEP alone) or the tracheal tubes were disconnected from the ventilator (positive pressure ventilation plus PEEP). RESULTS: In the static model, leakage flows [medians (range)] were 9.8 (6.2 to 20) for the cylindrical PVC, 1.3 (0.2 to 3.8) for the conical PVC, 0.03 (0.007 to 0.1) for the cylindrical polyurethane, 0.04 (0.003 to 0.2) for the conical polyurethane and 0.0 (0.0 to 0.0) ml min−1 for the PVCdc cuff (P
http://ift.tt/2qWUUeh
Εγγραφή σε:
Σχόλια ανάρτησης (Atom)
Δημοφιλείς αναρτήσεις
-
Abstract BACE1 is an indispensable enzyme for generating β-amyloid peptides, which are excessively accumulated in brains of Alzheimer'...
-
Rhinoplasty is perhaps the most challenging and elegant procedure within all of plastic surgery. In this issue of JAMA Facial Plastic Surger...
-
This Viewpoint discusses variances in cardiovascular prevention guidelines from the United States, Europe, and Canada and the debate surroun...
-
Symptom Presentation and Prescription of Sleep Medications for Veterans With Posttraumatic Stress Disorder. J Nerv Ment Dis. 2017 Jan ...
-
Objectives Oral health inequality in children is a widespread and well-documented problem in oral healthcare. However, objective and reliabl...
-
Use of communication coaching that included a question prompt list —or structured lists of questions given to patients prior to consultation...
-
International Journal of Environmental Research... Latest Results for Sleep and BreathingIntermitt... Evolutionary Biology News -- S...
-
Regulatory T cells (Treg) represent a minor sub-population of T lymphocytes which is crucial for the maintenance of immune homeostasis. Here...
-
from #AlexandrosSfakianakis via Alexandros G.Sfakianakis on Inoreader http://ift.tt/2jleE3p via IFTTT
Δεν υπάρχουν σχόλια:
Δημοσίευση σχολίου