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Biomedical subjects

H Colstrup

Publications and source records attributed to H Colstrup.

61 records · Page 4Linked to original sources
PubMed1983

A probe for measurements of related values of cross-sectional area and pressure in the resting female urethra.

A probe for measurement of related values of cross sectional area (c.a.) and pressure in the resting female urethra has been developed. C.a. can be measured in the range 0.07 to 0.79 cm2 by means of the field gradient principle. Pressure is measured in the range 0 to 150 cm H2O. Pressure needed for inflation and deflation of the balloon ranges from +4 to -5 cm H2O with a hysteresis of 3 to 4 cm H2O. The probe is able to follow changes of the c.a. up to 0.7 cm2/sec. The method makes possible estimation of urethral stiffness/rigidity during distension of the balloon, estimation of the capability of contraction of the closure apparatus in terms of isometric and isotonic contraction, muscular work and power. Furthermore, hysteresis during inflation and deflation of the balloon can be described.

Calibration↗
PubMed1983

Adult enuresis and hyperthyroidism.

Two female patients with adult enuresis and enuretic syndrome were cured of their voiding disorders after treatment for hyperthyroidism. They were without symptoms at follow-up five and one-half and one and one-half years later. A relation between thyroid and bladder function is suggested which calls for further investigation in a controlled study.

Adult↗
PubMed1983

A new method for the investigation of the closure function of the resting female urethra.

The field-gradient principle has been used in the development of a probe for the recording of related values of cross-sectional area and pressure in the resting female urethra. The probe is used in a manner that allows pressure to be increased in steps of 10 cm. water, distending the urethra up to a cross-sectional area of 0.79 cm.2. Recordings are performed at 0.5 cm. steps throughout the urethra. The obtained parameters make possible a description of the closure function in terms of urethral rigidity, closure pressure of the noninstrumented urethra, capability of isometric and isotonic contraction, muscular function and power of the closure mechanism.

Female↗
PubMed1983

A disposable uroflowmeter for recording of maximum flow rate. Accuracy and clinical acceptability.

A disposable urinary flowmeter (Peakometer) was evaluated in regard to accuracy of measurement and acceptability by patients. Laboratory tests of measurement accuracy were made with five Peakometers as recordings of maximum flow rate and voided volume. The accuracy was found to be acceptable. A minimum voided volume of 200 ml is recommended for a reasonably exact recording of maximum flow rate. Ten patients aged 28-86 years tested the acceptability of the Peakometer. All were able to use the apparatus correctly and to register maximum flow rate and voided volume of urine in accordance with written standardized instructions. The disposable flowmeter can be recommended for patients who live far from their hospital, thus saving time and transport costs. Clinics with relatively few patients requiring urinary flow studies may use the disposable flowmeters, instead of investing in relatively expensive electronic apparatus.

Adult↗
PubMed1977

Complement C1-inactivator in the serum of patients with malignant disease.

Complement C1-inactivator (C1-IA) in serum was determined in 423 individuals. The normal range for the concentration of C1-IA in serum was calculated from values in 94 blood donors and the concentrations in the sera of 329 patients were determined in relation to this range. A significant correlation was found between widespread malignant neoplastic disease and increased quantity of C1-IA in serum. Determination of C1-IA may be used to evaluate the extent to which a malignant disease is disseminated.

Complement C1 Inactivator Proteins↗