نتایج جستجو برای: perforated diaphragm

تعداد نتایج: 18659  

2017
En-Pei Lee Shao-Hsuan Hsia Hsiu-Feng Hsiao Min-Chi Chen Jainn-Jim Lin Oi-Wa Chan Chia-Ying Lin Mei-Chin Yang Sui-Ling Liao Shen-Hao Lai

BACKGROUND The recovery of diaphragmatic function is vital for successful extubation from mechanical ventilation. Recent studies have detected diaphragm atrophy in ventilated adults by using ultrasound, but no similar report has been conducted in children. In the current study, we hypothesized that mechanically ventilated children may also develop diaphragm atrophy and diaphragmatic dysfunction...

Journal: :Respiratory care 2016
Michele Umbrello Paolo Formenti

The majority of patients admitted to the ICU require mechanical ventilation as a part of their process of care. However, mechanical ventilation itself or the underlying disease can lead to dysfunction of the diaphragm, a condition that may contribute to the failure of weaning from mechanical ventilation. However, extended time on the ventilator increases health-care costs and greatly increases ...

2009
V. Mohammadi M. H. Sheikhi

Multilayer thin-film PZT diaphragm has been designed and modeled. Commercial Finite element software, ANSYS was implemented to model the diaphragm. This multi-layer diaphragm can be used as both sensor and actuator. A simplified model is introduced to reduce the CPU time. Dynamic characteristics of the multilayer diaphragm have been investigated. The important parameters of the multilayer PZT d...

Journal: :Obstetrics and gynecology 2015
Jill L Schwartz Debra H Weiner Jaim Jou Lai Ron G Frezieres Mitchell D Creinin David F Archer Lynn Bradley Kurt T Barnhart Alfred Poindexter Maggie Kilbourne-Brook Marianne M Callahan Christine K Mauck

OBJECTIVE To estimate contraceptive efficacy, safety, acceptability, and fit of a single-size diaphragm used with contraceptive gel. METHODS We conducted a multicenter trial in which 450 couples used the single-size diaphragm, 300 randomized to acid-buffering gel and 150 to nonoxynol-9, for at least 190 days and six menstrual cycles. Visits were at enrollment and after menstrual cycles 1, 3, ...

Journal: :American journal of physiology. Heart and circulatory physiology 2007
Hieronymus W H van Hees Henricus F M van der Heijden Coen A C Ottenheijm Leo M A Heunks Cindy J C Pigmans Freek W A Verheugt Rene M H J Brouwer P N Richard Dekhuijzen

Diaphragm weakness commonly occurs in patients with congestive heart failure (CHF) and is an independent predictor of mortality. However, the pathophysiology of diaphragm weakness is poorly understood. We hypothesized that CHF induces diaphragm weakness at the single-fiber level by decreasing myosin content. In addition, we hypothesized that myofibrillar Ca(2+) sensitivity is decreased and cros...

Journal: :BMC Gastroenterology 2004
Ahmed Shafik Ali A Shafik Olfat El Sibai Randa M Mostafa

BACKGROUND The role of the crural diaphragm during increased intra-abdominal pressure is not exactly known. We investigated the hypothesis that the crural diaphragm undergoes reflex phasic contraction on elevation of the intra-abdominal pressure with a resulting increase of the lower esophageal pressure and prevention of gastro-esophageal reflux. METHODS The esophageal pressure and crural dia...

Journal: :Journal of applied physiology 2005
Gerald S Supinski Leigh A Callahan

Heart failure evokes diaphragm weakness, but the mechanism(s) by which this occurs are not known. We postulated that heart failure increases diaphragm free radical generation and that free radicals trigger diaphragm dysfunction in this condition. The purpose of the present study was to test this hypothesis. Experiments were performed using halothane-anesthetized sham-operated control rats and r...

Journal: :Arquivos brasileiros de oftalmologia 2007
José Américo Bonatti Samir Jacob Bechara Marcelo Wesley Lopes Dall'Col Fernando Betty Cresta Pedro Carlos Carricondo Newton Kara-José

PURPOSE To report a specific line of research developed at the University of São Paulo/Brazil on fibrin glue used for sealing corneal perforations and the perspectives of use on non-perforated corneal ulcers and photorefractive keratectomy-operated corneas. METHODS To describe fibrin glue manufacture, development of a device to test the glued perforated corneal area resistance, subsequent exp...

2013
Mohammad Vaziri Abdolreza Pazouki Zeinab Tamannaie Farshid Maghsoudloo Mohadeseh Pishgahroudsari Shahla Chaichian

BACKGROUND Delay in diagnosis and treatment of perforated appendicitis may cause life-threatening complications.The aim of this study was to determine and compare pre-operative total and direct bilirubin levels incases of simple and perforated acute appendicitis in order to improve the clinical decision making. METHODS This prospective observational study included eighty patients who underwen...

2014
JRA Skipworth AEE Fanshawe MJ West A Al-Bahrani

INTRODUCTION Gastrointestinal stromal tumours (GISTs) are the most common connective tissue neoplasms of the gastrointestinal tract, the most common clinical presentation of which is with abdominal pain or gastrointestinal bleeding. METHODS We describe a case of a perforated gastric GIST as well as reviewing the relevant published literature. RESULTS A 51-year-old woman presented to the acu...

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