Problems of cuff deflation
نویسندگان
چکیده
منابع مشابه
Cuff Deflation During HFOV
High frequency oscillatory ventilation takes advantage of unique principles of gas flow when respiratory frequencies exceed 3 Hz (180 breaths per minute). These gas flow principles enable the alveolar gas turnover at volumes below or equal to physiologic deadspace. One of these principles is call asymmetrical velocity profile. As Froese and Bryan described in their “State of the Art” article on...
متن کاملLaryngeal mask airway performance: effect of cuff deflation during anaesthesia.
We studied the effect of deflating the laryngeal mask airway (LMA) cuff in situ on recorded respiratory tidal ventilation in 30 spontaneously breathing anaesthetized patients. Another 26 patients were studied in whom the LMA cuff was undisturbed. Deflation of the cuff to a pressure of 22 mm Hg (below an estimated arteriolar perfusion pressure of the pharyngeal mucosa), by removing approximately...
متن کاملCorrective measures for compromised oxygen delivery during endotracheal tube cuff deflation with high-frequency percussive ventilation.
OBJECTIVE To determine the effect of endotracheal-tube cuff deflation on airflow and F(IO2) during high-frequency percussive ventilation (HFPV), and explore methods of correcting the cuff-deflation-associated decrease in mean airway pressure and F(IO2) at the carina. METHODS Using a mechanical lung model in our respiratory research laboratory, we measured circuit pressure near the connection ...
متن کاملEfficient Deflation Methods Applied to 3-d Bubbly Flow Problems
Abstract. For various applications, it is well-known that deflated ICCG is an efficient method to solve linear systems with an invertible coefficient matrix. Tang and Vuik [J. Comput. Appl. Math., 206 (2007), pp. 603– 614] proposed two equivalent variants of this deflated method, which can also solve linear systems with singular coefficient matrices that arise from the discretization of the Poi...
متن کاملA Novel Deflation Technique for Solving Quadratic Eigenvalue Problems
In this paper we propose numerical algorithms for solving large-scale quadratic eigenvalue problems for which a set of eigenvalues closest to a fixed target and the associated eigenvectors are of interest. The desired eigenvalues are usually with smallest modulo in the spectrum. The algorithm based on the quadratic Jacobi-Davidson (QJD) algorithm is proposed to find the first smallest eigenvalu...
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ژورنال
عنوان ژورنال: Anaesthesia
سال: 1973
ISSN: 0003-2409,1365-2044
DOI: 10.1111/j.1365-2044.1973.tb00521.x