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Biomedical subjects

J J Wallace

Publications and source records attributed to J J Wallace.

4 recordsLinked to original sources
PubMed2000

Predictive validity of the Neurobehavioural Cognitive Status Examination (NCSE) in a post-acute rehabilitation setting.

Within the context of a post-acute rehabilitation setting, association and agreement between results from the Neurobehavioural Cognitive Status Examination (NCSE) and from the neuropsychological (NP) evaluation are examined. All participants (n = 48) had sustained a severe traumatic brain injury and NCSE testing preceded NP testing by an average of 1 month. A significant relationship and fair classification agreement (i.e. presence or absence of cognitive impairment) was found between the overall results from NCSE and NP evaluation. Significant relationships were also observed between most NCSE subtests and paired NP tests thought to be assessing the same cognitive domains. However, the classification agreement (i.e. the presence or absence of deficient performance) between most NCSE subtests and paired NP tests was poor. The findings are discussed from the standpoint of individual treatment planning.

Adolescent↗
PubMed1998

Anaesthesia and mitochondrial disease.

Mitochondrial diseases, or encephalomyopathies, are an uncommon, heterogeneous group of disorders with variable clinical course and presentation. Many of these patients present for surgery, or undergo anaesthesia in the course of investigation of their illness. Unfortunately, little information exists on their management in anaesthetic texts and the literature. We report on the anaesthetic management of a paediatric patient with mitochondrial disease, and briefly discuss the pathophysiology and anaesthetic implications of these disorders.

Anesthesia, Inhalation↗
PubMed1993

An experimental single-sideband acoustical re-injection test method for Doppler systems.

An experimental acoustical re-injection system based on a wideband single-sideband generator has been developed. This has been used to present a clinical Doppler system with a simulated Doppler shift, as would be obtained from a unidirectional moving reflector. Development of this approach should permit independent electronic testing of forward and reverse channels, including mean and peak frequency calculations and measurement of channel separation. Sideband suppression of 28 dB minimum has been obtained for a range of ultrasound frequencies from 2.5 MHz to 10 MHz and audio frequency shifts up to 10 kHz.

Equipment and Supplies↗