نتایج جستجو برای: threshold mask
تعداد نتایج: 143685 فیلتر نتایج به سال:
BACKGROUND The key to successful neonatal resuscitation is effective ventilation. Little evidence exists to guide clinicians in their choice of manual ventilation device or face mask. The expiratory tidal volume measured at the mask (V(TE(mask))) is a good estimate of the tidal volume delivered during simulated neonatal resuscitation. AIM To compare the efficacy of (a) the Laerdal infant resu...
OBJECTIVE To measure the imposed power of breathing (imposed work of breathing per minute) associated with spontaneous breathing through an active impedance threshold device and a sham impedance threshold device. DESIGN Prospective randomized blinded protocol. SETTING University medical center. PATIENTS Nineteen healthy, normotensive volunteers (10 males, 9 females, age range 20-56 y, mea...
Background and purpose: control of intraocular pressure has specific role in ophthalmic surgery but ËTT as a common access to airway in general anesthesia lead to increase in ÏÔP, so, many study have been done to evaluate an alternative access to airway such as laryngeal mask. We conducted this study to evaluate intraocular pressure changes subsequent to insertion of laryngeal mask airway and...
Background: Cuffed pharyngeal tube is a device designed for ventilation of anesthetized patients. CPT has advantages over face mask including: maintaining of face mask can be difficult and boring after several minutes and mobility of the practitioner is reduced due to involvement of hands. Mask pressure can cause soft tissue and nerve damage around the nose. Anesthetic gas leakage from the mask...
A recent article by D'Zmura and Knoblauch (1998) argued from experiments using sectored noise that chromatic detection is subserved by multiple post-receptoral mechanisms, and not solely by mechanisms tuned to specific cone-opponent 'red – green' and 'blue– yellow' directions as has been proposed previously. An important feature of their analysis is their use of angles within a threshold-scaled...
Abstract Quickly and conveniently identifying buildings in disaster areas plays an important role assessment. To achieve the technical requirements of flood relief projects, this paper proposes a building extraction method for use with remote sensing images that combines traditional digital image processing methods convolution neural networks. First, threshold segmentation is used to select con...
the technique of applying mask is one of the most important techniques in arabic contemporary poetry in which the ancient characters would be recalled by mentioned technique in order to express the desired concepts. this literary technique plays an important role in egyptian modernism contemporary poetry. thus the present research intends to survey the lexical and expressional meaning of mask a...
Background and Aim: Bioaerosols are one of the most important agents that cause post operating infections in hospitals. Surgical masks are recommended for prevention of bioaerosols transmition in operating rooms. This study aimed at evaluation of submicron particle filtration efficiency of domestic and imported surgical masks. Materials and Methods: In this cross sectional study, 5 types of...
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