A device for the female urinary outflow tract.
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Female↗
Biomedical subjects
R D Steventon
Publications and source records attributed to R D Steventon.
A comparison between diuresis renography and the Whitaker test in 64 kidneys.
Fifty-seven patients have provided 64 dilated pelvicaliceal units for study by diuresis renography and the Whitaker test. Of 45 kidneys showing a type I or type IIIa renographic response (unobstructed), 32 were, according to Whitaker's criteria, obstructed, 8 fell into an equivocal zone and only 5 were unobstructed. Thirty-five of these kidneys--33 of which were associated with moderate or severe loin pain--were operated on for presumed obstruction with generally excellent symptomatic and renographic result. Thus the detection of a type I or type IIIa response in a dilated, painful system cannot be taken to exclude obstruction. Better correlation was obtained between renography and the Whitaker test in patients exhibiting a type IIIb or type II renographic response. Diuresis renography is a sensitive indicator of urodynamic disturbance in the upper urinary tract and an ideal means of evaluating post-operative progress. The Whitaker test provides a reliable means of selecting patients who will benefit from pyeloplasty.
Adolescent↗
An evaluation of the vitalograph pulmonary monitor.
The Vitalograph pulmonary monitor has recently been altered by the manufactures to read in litres per minute. In 200 pairs of measurements comparing the monitor to the Wright peak flow meter (PFM) the mean difference between the instrument was 0.57 litres/min and there was a strong positive correlation (r = 0.92). The mean within subject coefficient of variation was 5.8% (range 2.6% to 10.7%). There was a statistical difference (P less than 0.05) in measurements obtained with different monitors but in practical terms this difference was small. The monitor is pocket-sized and light and is therefore suitable for following changes in peak expiratory flow away from the physiology laboratory.
Evaluation Studies as Topic↗
Facemask or mouthpiece for delivery of nebulized bronchodilator aerosols?
Two methods of administering nebulized bronchodilator solution were compared in 15 patients with chronic airflow obstruction. There was no significant difference between facemask and mouthpiece as far as breathlessness, wheezing or improvement in peak expiratory flow were concerned. Ten patients preferred facemasks, three preferred mouthpieces; two preferred mouthpieces except when severely breathless, when they preferred the facemask. It is suggested that the patients be allowed to use either mask or mouthpiece depending on their preference.
Adult↗
A comparison of efficiency of three types of crutches using oxygen consumption.
Because the axillary crutch can cause axillary artery thrombosis and crutch palsy, the elbow crutch is more frequently used. Canadian crutches combine features of both the axilla and elbow crutches. A previous study examined any advantages in terms of energy cost using heart rate. The present study re-evaluates the energy cost by using the measurement of oxygen consumption. The study further suggests that the Canadian crutches have advantages in terms of energy cost.
Adult↗
The use of a portable oxygen consumption meter (Oxylog) for assessing the efficiency of crutch walking.
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Adult↗
Servicing nebulisers.
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Airway Obstruction↗