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Biomedical subjects

P N Henderson

Publications and source records attributed to P N Henderson.

17 recordsLinked to original sources
PubMed1996

An alternative method of closed silicone intubation of the lacrimal system.

An alternative method of closed lacrimal intubation is described, the basis of which is to place the end of a piece of silicone tubing over the end of a small-diameter metal introducer, stretch the silicone tubing back along the introducer, and then pass the introducer together with the tubing through the lacrimal system into the nasal cavity. The tubing is visualized in the inferior meatus, from where it is retrieved, and then the introducer is withdrawn. The other end of the tubing is passed in a similar fashion. The technique is easily mastered, inexpensive, and less traumatic than other described techniques.

Child↗
PubMed1985

A modified trephining technique for the insertion of Jones tube.

The functional success of a Jones Pyrex tube depends on the accurate positioning of the tube. The modified trephining technique for the insertion of a Jones tube ensures accurate positioning by using a guide wire to maintain the selected position and direction of the tube while a 1.5-mm-diameter trephine cuts a cylindrical track around the guide wire, down which a straight Pyrex tube is threaded. The snug fit between the tube and the trephined track has minimized postoperative extrusion (5%) and migration (7%). This technique has been used to insert 93 tubes in 84 patients aged 7 to 83 years.

Conjunctivitis↗
PubMed1980

Actinomycotic canaliculitis.

Actinomycotic infection should always be considered in any patient with persistent purulent conjunctivitis of chronic canaliculitis. The clinical features, investigation including macrodacryocystography, and treatment in four patients with actinomycotic canaliculitis are presented. The difficulty of microbiological diagnosis is stressed and the occurrence of associated lacrimal obstruction is reported.

Actinomyces↗