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Biomedical subjects

M Murdock

Publications and source records attributed to M Murdock.

28 records · Page 2Linked to original sources
PubMed1991

Making continuous quality improvement a reality: innovation skills.

Creativity and innovation, according to Grudin, "lie near the heart of humanity." If CQI is to be the force that will transform healthcare organizations into more systems-conscious and customer-driven endeavors, creativity and innovation must be encouraged and practiced. Given that they have a responsibility to introduce new products and services to their organization, materiel management professionals are particularly well-suited to practice and encourage creativity and innovation.

Creativity↗
PubMed1988

The role of IVP in blunt trauma.

To investigate the role of the IVP, we studied 139 patients with blunt abdominal trauma and hematuria. Multivariate analysis of clinical parameters was utilized in attempt to predict which patients would have abnormal IVP's and which would eventually require genitourinary operation. Thirty-four patients (25%) demonstrated abnormalities on IVP; however, no combination of clinical findings (including degree of hematuria) could reliably predict which patients would have abnormal IVP's. On the other hand, in 90% of the patients, the necessity for genitourinary operation could be reliably predicted based on: presence of blood at the urethral meatus, degree of hematuria, patient age, Injury Severity Score, and number of rib fractures. We conclude that to detect IVP abnormalities, IVP's need to be performed on all blunt trauma patients with hematuria. However, patients likely to have injuries requiring operative repair can be predicted. Those patients unlikely to have genitourinary injury requiring repair, therefore, may have IVP performed on a nonurgent basis.

Abdominal Injuries↗
PubMed1987

Pulse-modulated light source for psychometric and vision experiments.

Light-emitting diodes (LED) of various colours were used to produce accurately controllable light sources. Variable light intensity was obtained by applying 800-ns current pulses to the LEDs at frequencies 1-1000 kHz using a single potentiometer. These current pulses were generated from an oscillator which was voltage-controlled from a potentiometer and an antilogarithmic amplifier. Its output was gated to produce an optional flicker of 1-100 Hz. The light intensity was indicated by a frequency meter connected to the oscillator. The reading of this was found to linearly indicate light intensity.

Color Perception Tests↗