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Biomedical subjects

T Wisborg

Publications and source records attributed to T Wisborg.

72 records · Page 4Linked to original sources
PubMed1986

New syringes for arterial blood sampling.

Two new syringes for arterial blood sampling were compared. Fifty syringes of each type were randomly tested in awake patients and no significant differences were found regarding time taken to collect samples, or the pain experienced by the patient. Air bubbles were found in, and blood leaked, from the Pulsator syringes significantly more often than from the Radiometer B 129 syringes (p less than 0.005).

Arteries↗
PubMed1985

Resistance of tracheal tubes 3.0 and 3.5 mm internal diameter. A comparison of four commonly used types.

The resistance of RAE, Rüsch, Mallinckrodt paediatric and Portex plain nasal and oral tracheal tubes with internal diameters 3.0 mm and 3.5 mm was calculated at air flows of 1 to 10 litres per minute. The flow resistance profiles of RAE and Rüsch tracheal tubes was generally higher than those of Mallinckrodt paediatric and Portex plain tubes. All RAE and Rüsch nasotracheal tubes of size 3.0 mm internal diameter and orotracheal tubes 3.0 mm internal diameter had a flow resistance exceeding 3.0 kPa litres/second at an air flow of 4 litres/minute. It is concluded that these tracheal tubes ought only to be used with assisted or controlled ventilation.

Equipment Design↗
PubMed1985

Does intravenous lidocaine prevent laryngospasm after extubation in children?

One hundred otherwise healthy children undergoing tonsillectomy were investigated in a double-blind study to examine the effect of intravenous lidocaine in preventing laryngospasm upon extubation. The children were anesthetized with N2O-O2-halothane and orally intubated. They were randomly given lidocaine, 1.5 mg/kg, or saline intravenously prior to extubation, which took place at the same depth of anesthesia, namely when there were signs of swallowing activity. Eleven children (2%) in each group of 50 developed laryngospasm. From our findings it is concluded that lidocaine, 1.5 mg/kg, does not prevent laryngospasm upon extubation when extubation is carried out at the start of swallowing activity.

Child↗
PubMed1981

Relation of estriol in saliva to serum estriol during normal pregnancy.

As saliva is an easily accessible biological material, compared with 24-hour urine and blood, the salivary concentration of estriol was studied from the 30th to the 41st week of gestation in 268 samples from 124 normal pregnancies. At the same time, venous blood samples were drawn and analyzed for total and unconjugated estriol. The mean values for the concentration of total estriol in saliva in the 30th and 41st weeks were 2.8 and 7.2 nmol/l respectively. The salivary estriol concentration appears to increase in perfect conformity with its serum concentration in the course of gestation. If estriol in saliva also reflects low serum values and an impaired function of the feto-placental unit, analyses of the saliva may be applicable as a screening procedure in high-risk pregnancies.

Adolescent↗