Martin Chapman

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PURPOSE To qualitatively explore the process of the provision of futile care in Canadian intensive care units (ICUs). MATERIALS AND METHODS A mailed, semistructured survey was sent to medical and nursing unit directors of all Canadian ICUs, asking them to estimate the frequency of provision of futile care, when care becomes "futile," the reasons such care(More)
BACKGROUND Essential tremor is the most common movement disorder and is often refractory to medical treatment. Surgical therapies, using lesioning and deep brain stimulation in the thalamus, have been used to treat essential tremor that is disabling and resistant to medication. Although often effective, these treatments have risks associated with an open(More)
BACKGROUND In the 2003 Toronto SARS outbreak, SARS-CoV was transmitted in hospitals despite adherence to infection control procedures. Considerable controversy resulted regarding which procedures and behaviours were associated with the greatest risk of SARS-CoV transmission. METHODS A retrospective cohort study was conducted to identify risk factors for(More)
This commentary represents a selective survey of developments relevant to critical care. Selected themes include advances in point-of-care diagnostic testing, glucose control, novel microbiological diagnostics and infection control measures, and developments in information technology that have implications for intensive care. The latter encompasses an early(More)
When assessing outcome studies, the beneficial portion of any therapeutic strategy may not be clearly identified, especially in a condition as complex as sepsis. In the randomized controlled trial conducted by Rivers and coworkers [1], early goal-directed therapy (EGDT) was associated with significantly improved outcomes in sepsis. The study group received(More)
BACKGROUND The authors hypothesized that craniocervical extension occurs during normal mouth opening. METHODS Twenty volunteers were studied. Interdental distance was measured at four different degrees of craniocervical extension. RESULTS Interdental distance increased from 28 mm (95% confidence interval, 25-30) in slight flexion to 46 mm (95%(More)
OBJECTIVE To compare long-term electroencephalographic (EEG) recordings of standard collodion-applied scalp disk electrodes (SDEs) with newly developed subdermal wire electrodes (SWEs) in comatose intensive care unit (ICU) patients. METHODS Ten comatose ICU patients had simultaneous recordings from 8 active SDEs and 8 active SWE for >24 h. The timing and(More)
PURPOSE The outbreak of severe acute respiratory syndrome (SARS) in 2003 presented major challenges to the safety of anesthesiologists and other healthcare workers (HCWs). This study determined the incidence of SARS transmission to HCWs who intubated patients and analyzed the concerns of HCWs regarding personal and patient safety. METHODS Healthcare(More)
Carbon dioxide has been monitored in the body using a variety of technologies with a multitude of applications. The monitoring of this common physiologic variable in medicine is an illustrative example of the different levels of evidence that are required before any new health technology should establish itself in clinical practice. End-tidal capnography(More)
We propose to harness Angluin’s L∗ algorithm for learning a deterministic finite automaton that describes the possible scenarios under which a given program error occurs. The alphabet of this automaton is given by the user (for instance, a subset of the function call sites or branches), and hence the automaton describes a user-defined abstraction of those(More)