2. Infants can actively tighten their abdominal muscles that can prevent gas entering the lungs during inflation; often termed ‘splinting’ [3]. Forced expiration and splinting cause hypoxemic episodes due to low lung volume and low VT delivery, causing obstruction’ and ‘low VT’ alarms. Fig. 1 shows a recording from a 1000-g baby ventilated with assist control (AC) and VG ventilation at a rate o...

Mitral valve closure during cardiopulmonary resuscitation may result from direct cardiac compression. An alternative hypothesis is that with a rise in intrathoracic pressure, mitral valve closure can occur but may be influenced by whether the lungs are inflated or deflated. To test this hypothesis, we placed a large-bore cannula into the thoraces of 11 dogs. Intrathoracic pressure was changed b...

Low-tidal-volume ventilation strategies are clearly beneficial in patients with acute lung injury and acute respiratory distress syndrome, but the optimal level of applied positive end-expiratory pressure (PEEP) is uncertain. In patients with high pleural pressure on conventional ventilator settings, under-inflation may lead to atelectasis, hypoxemia, and exacerbation of lung injury through "at...

In their review on mechanical ventilation in severe asthma, Stather and Stewart [1] raise a concern that use of external positive end-expiratory pressure (PEEP) will result in increased total PEEP and worsened gas trapping [1]. Of critical importance to our understanding of whether application of external PEEP will be beneficial is assessment of the presence or absence of expiratory flow limita...

Introduction: This study aimed to evaluate the effects of four-time inflation of the stent balloon at nominal pressure on optimal stent expansion in resistant lesions. Materials and Methods: This interventional study was conducted on 39 patients with coronary artery lesions, in whom Zotarolimus-eluting stents (N=20), Paclitaxel-eluting stents (N=11) and other stents (N=8) were deployed four tim...

HAINSWORTH, R. Circulatory YeSponSeS from hng in.ation in anesthetized dogs. Am. J. Physiol. 226(2) : 247-255. 1974.-Responses from inflation of one lung with different pressures were studied L using a) relatively intact dogs, b) dogs with denervated aortic baroreceptors and a controlled pressure to the carotid baroreceptors, and c) dogs with open chests and the inflated lung artifiSally perfus...

this paper tries to survey and estimate non-accelerating inflation rate of unemployment (nairu) and potential output. it uses the unobserved components model to propose a new method. the model consists of ukan law equations and philips curve. it uses unobservable key economic variable in the form of unobserved random trends in an equation system of three variables namely unemployment, gross dom...

BACKGROUND Pneumatic tourniquets are medical devices that occlude blood flow to distal part of extremities and are commonly used in upper limb surgeries to provide a dry, clean and bloodless field. To decrease pressure-related injuries and potential risk of complications subjected to the high inflation pressure of pneumatic tourniquet, minimal inflation pressures are recommended. METHODS A ne...

CONTEXT Endotracheal tube cuff pressure (ETCP) is recommended to be maintained between 20-30 cm H2O limits. While insufficient inflation of ETC may cause aspirations, over-inflation of it may lead to damage in tracheal epithelium. AIMS We planned to investigate the effects of user experience and cuff pressure inflation method differences following endotracheal tube cuff pressure and complaint...

We have compared ease of insertion, oropharyngeal leak pressure, directly measured pharyngeal mucosal pressure and anatomical position (assessed fibreoptically) for the size 4 and size 5 laryngeal mask airway (LMA) in 20 male and 20 female patients. Microchip pressure sensors were attached to the LMA at locations corresponding to the piriform fossa, hypopharynx, base of the tongue, lateral and ...