Biomedical subjects
D E Fox
Publications and source records attributed to D E Fox.
Semantic restrictions on children's passives.
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Evaluation of lumbar lordosis. A prospective and retrospective study.
Two lordotic angles were measured on roentgenograms of 973 adults in a prospective and retrospective review. The majority of the films were taken because of lumbar complaints. The mean lumbosacral (LS) angle (L2-Sacrum) was 45.05 degrees +/- .85 degrees. The mean lumbolumbar (LL) angle (L2-L5) was 29.96 degrees +/- .74 degrees. Only minor differences were found between a standardized (prospective) and a nonstandardized (retrospective) group. There was a statistically significant difference between men and women with both LS and LL angles, but no racial differences were observed. A "routine" supine lateral lumbar spine roentgenogram is a very accurate means of measuring lordotic angles. A lordotic angle of less than 23 degrees defines hypolordosis and more than 68 degrees, hyperlordosis.
An autoclavable ventilation failure alarm.
A small ventilation failure alarm which can be used with all types of lung ventilator is described. The entire patient circuit can be removed and autoclaved easily. Activation of the unit is by a removable key, a mains failure warning is provided, and alarm may be muted during aspiration of secretions from the tracheobronchial tree.
Letter: Patient air intake valve.
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An airway resistance for use in an artificial lung.
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An expiratory resistance valve.
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A device for the controlled ventilation of infants and children.
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An anti-pollution modification for the Cape-Waine anaesthetic ventilator.
Most anaesthetic equipment needs to be modified to fulfil anti-pollution recommendations. A method of modifying a Cape-Waine Anaesthetic Ventilator is described in detail showing what parts need to be replaced or removed. A list of the new parts required together with their cost is given and the modification can be made by suitably trained hospital staff or the manufacturers.