Publications by authors named "Richard Firmin"

While there is evidence to support the use of extracorporeal membrane oxygenation in acute respiratory distress syndrome due to a variety of causes, its use in chlorine gas-induced acute respiratory distress syndrome has not been described in the English medical literature. We present a young girl who had severe acute respiratory distress syndrome following exposure to chlorine gas during the disinfection process at a swimming pool. She failed conventional management and underwent venovenous extracorporeal membrane oxygenation.

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The aim of the study was to systematically evaluate effect of CentriMag heart pump (Thoratec Corporation) as temporary ventricular assist device (VAD) and part of extracorporeal membrane oxygenation (ECMO) system on outcomes in patients with cardiac or cardiac-respiratory failure. A systematic search was conducted in five databases for the period 2003 to 2012. Fifty-three publications with data for 999 patients, supported with CentriMag, were included.

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Objectives: The objective of the study was to assess the cost of using different blood pumps for short-term ventricular assist device (VAD) and extracorporeal life support (ECLS) systems for cardiac and cardiorespiratory failure in the UK.

Methods: The cost analysis presented was based on evaluation of the time required to provide circulatory support for the following indications: post-cardiac surgery cardiogenic shock, postacute myocardial infarction cardiogenic shock, deteriorating end-stage heart failure (ESHF) and the ability of different blood pumps to provide support for the necessary duration. The maximum length of support for each device was based on the manufacturers' recommendations.

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Legionella-associated respiratory failure has a high mortality, despite modern ventilation modalities. Extracorporeal membrane oxygenation (ECMO) is used to achieve gas exchange independent of pulmonary function in patients with severe respiratory failure. This was a retrospective review of the management and outcome of patients with Legionella-associated respiratory failure treated with ECMO support in a large ECMO center over the past 10 years.

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Context: Extracorporeal membrane oxygenation (ECMO) can support gas exchange in patients with severe acute respiratory distress syndrome (ARDS), but its role has remained controversial. ECMO was used to treat patients with ARDS during the 2009 influenza A(H1N1) pandemic.

Objective: To compare the hospital mortality of patients with H1N1-related ARDS referred, accepted, and transferred for ECMO with matched patients who were not referred for ECMO.

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Extracorporeal membrane oxygenation (ECMO) is a modified form of cardiopulmonary bypass that allows short-term support for potentially reversible severe acute respiratory and/or cardiac failure in critically ill adults and children. There is increasing interest in veno-venous (VV) ECMO for severe acute respiratory failure in adults. The National Institute for Health and Clinical Excellence has recently updated its interventional procedure guidance, which summarises available data on efficacy and safety of this procedure and provides guidance for clinicians wishing to undertake VV ECMO.

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We present the case of a near fatal aspiration of a foreign body requiring extracorporeal membrane oxygenation (ECMO) support. The use of ECMO to support treatment for a foreign body in the distal trachea is rare and there are only two cases reported in the literature. A 13-year-old male presented with a three-weeks' history of a cough and swinging fevers.

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Objective: Panton-Valentine leukocidin expressing Staphylococcus aureus pneumonia, an infection that affects predominantly young people, has a mortality rate of > 70% despite aggressive conventional management. Little information is available on the management of patients with Panton-Valentine leukocidin expressing S. aureus pneumonia with extracorporeal membrane oxygenation support.

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Background: Existing evidence indicates that once mature neonates with severe cardio-respiratory failure become eligible for Extra Corporeal Membrane Oxygenation (ECMO) their chances of intact survival are doubled if they actually receive ECMO. However, significant numbers survive with disability. NEST is a multi-centre randomised controlled trial designed to test whether, in neonates requiring ECMO, cooling to 34 degrees C for the first 48 to 72 hours of their ECMO course leads to improved later health status.

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Congenital diaphragmatic hernia and oculocutaneous albinism are both rare birth defects that can be diagnosed in the newborn period. However, they have not been previously reported to have occurred together. This report describes a unique case of a male Asian baby with oculocutaneous albinism and a right-sided congenital diaphragmatic hernia.

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Recurrent wheezing in children is frequently due to asthma and responds to bronchodilator therapy. We report a case of a 13-year old boy with a 2-year history of presumed asthma not responding to bronchodilator therapy. Bronchoscopy revealed a right main bronchus tumor, which was diagnosed as bronchial schwannoma after resection by sleeve lobectomy.

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Background: Severe acute respiratory failure in adults causes high mortality despite improvements in ventilation techniques and other treatments (eg, steroids, prone positioning, bronchoscopy, and inhaled nitric oxide). We aimed to delineate the safety, clinical efficacy, and cost-effectiveness of extracorporeal membrane oxygenation (ECMO) compared with conventional ventilation support.

Methods: In this UK-based multicentre trial, we used an independent central randomisation service to randomly assign 180 adults in a 1:1 ratio to receive continued conventional management or referral to consideration for treatment by ECMO.

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Aortic root abscess without any involvement of the aortic valve is extremely rare. This report describes an 11-year-old girl with subperiosteal abscess due to a virulent organism called Panton-Valentine leukocidin-secreting staphylococci. Although her initial transthoracic echocardiogram did not show any cardiac abnormality, she subsequently experienced an aortic root abscess communicating with the left ventricle.

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Objective: Extracorporeal membrane oxygenation has been shown to be effective in term neonates with severe but reversible lung disease within the context of randomized, controlled trials. Extracorporeal membrane oxygenation now has been open to a wider population of infants in the United Kingdom, and other treatments have become available. The population referred for extracorporeal membrane oxygenation, therefore, has changed.

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Background: The role of extracorporeal membrane oxygenation (ECMO) in patients with congenital diaphragmatic hernia is still evolving. The use of ECMO is invasive with potential complications during instrumentation for cannulation and heparinization. There are no reliable predictors of outcome in patients requiring ECMO.

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Introduction: The inflammatory response caused by extracorporeal membrane oxygenation (ECMO) is clearly visible within the first 24 h of cannulation. The inflammatory process affects all areas of the lung, even areas previously spared by the primary disease.

Objective: To compare the change in the radiographic signs of inflammatory response to ECMO between poly-methyl pentene and silicon oxygenators.

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Background: Veno-arterial extracorporeal membrane oxygenation (ECMO) is a common modality of circulatory assist device used in children. We assessed the outcome of children who had ECMO following repair of congenital cardiac defects (CCD) and identified the risk factors associated with hospital mortality.

Methods: From April 1990 to December 2003, 53 patients required ECMO following surgical correction of CCD.

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Background: An estimated 350 adults develop severe, but potentially reversible respiratory failure in the UK annually. Current management uses intermittent positive pressure ventilation, but barotrauma, volutrauma and oxygen toxicity can prevent lung recovery. An alternative treatment, extracorporeal membrane oxygenation, uses cardio-pulmonary bypass technology to temporarily provide gas exchange, allowing ventilator settings to be reduced.

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Objective: To explore the changes in the QTc interval during mild hypothermia in neonates receiving extracorporeal membrane oxygenation (ECMO).

Design: Twenty seven neonates (median gestation 40 weeks; range 33-41 weeks) enrolled in a pilot study of mild hypothermia were studied during the first five days of ECMO. The first group (N=7) were maintained at 37 degrees C throughout the study period.

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Objective: To observe amplitude integrated electroencephalography (aEEG) in neonates receiving ECMO and to determine whether mild hypothermia influenced the aEEG recording.

Methods: Twenty-six consecutive neonates enrolled in a pilot study of mild hypothermia during ECMO were studied. The first group (N=6) was maintained at 37 degrees C throughout the study period.

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Venovenous extracorporeal membrane oxygenation with lepirudin anticoagulation was successfully used for a complicated case of Wegener's granulomatosis and heparin-induced thrombocytopenia. Interestingly, a linear correlation was found between activated partial thromboplastin time and activated clotting time during lepirudin anticoagulation.

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Cardiopulmonary bypass is usually used for rewarming and for providing cardiac support in patients with severe hypothermia and cardiovascular instability. We report the first case of accidental severe hypothermia associated with prolonged cardiac arrest that was successfully managed by venovenous extracorporeal membrane oxygenation.

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Background: It is likely that the imbalance between the pro- and anti-inflammatory cytokines will determine the outcome in infants with severe respiratory failure receiving extracorporeal membrane oxygenation (ECMO).

Aims: We determined if there was an imbalance between pro- and anti-inflammatory cytokines in serial bronchoalveolar lavage (BAL) fluid obtained from survivors and non-survivors of ECMO.

Methods: We therefore measured the cellular changes and the molar ratios of pro-inflammatory and anti-inflammatory cytokines in serial BAL fluid obtained from survivors and non-survivors of ECMO.

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Objective: To report a single case of oxygenator failure caused by clot embolism originating from the bladder; and to discuss some preventative options.

Case Report: A 2.5 kg neonate with a diagnosis of influenza A received veno-arterial (V-A) extracorporeal membrane oxygenation (ECMO) for cardiorespiratory support.

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