A.R. Manara
Frenchay Hospital
23 Papers
337 Citations
A.R. Manara is an academic researcher from Frenchay Hospital. The author has contributed to research in topics: Intensive care & Intensive care unit. The author has an hindex of 15, co-authored 23 publications.
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Papers
Cerebral near infrared spectroscopy: emitter-detector separation must be increased.
TL;DR: Compared to scalp hyperaemia induced by inflation and release of a pneumatic scalp tourniquet, increases in oxyhaemoglobin became significantly smaller with increasing optode separation, and support the concept of using multi-detector NIRS to separate intra- and extracranial NIR signal changes.
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The impact of percutaneous tracheostomy on intensive care unit practice and training
TL;DR: The proportion of patients receiving intensive care who underwent tracheostomy doubled from a median of 8.5% to 16.8% following the introduction of the percutaneous technique with the procedure being undertaken significantly earlier during the intensive care stay.
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Extracerebral absorption of near infrared light influences the detection of increased cerebral oxygenation monitored by near infrared spectroscopy.
TL;DR: This study shows that the Invos 3100 monitor is sensitive to tissue oxygenation but does not reliably detect changes in cerebral oxygenation as a result of profound cerebral hyperaemia.
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Behaviour of near-infrared light in the adult human head: implications for clinical near-infrared spectroscopy.
TL;DR: The assumptions that extracerebral tissues contribute little to attenuation of NIR light in the adult head and that most of this attenuation occurs superficially in the scalp are drawn into question by this study.
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Mortality from percutaneous dilatational tracheostomy. A report of three cases.
B. McCormick,A.R. Manara +1 more
TL;DR: While bronchoscopy is now used routinely during percutaneous tracheostomy insertion in most units, it is speculated that ultrasound examination of the neck is more likely to identify major vascular structures at risk and there is little evidence that either bronChoscopy or ultrasound scanning reduces the incidence of complications.
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