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Biomedical subjects

G C Lulenski

Publications and source records attributed to G C Lulenski.

5 recordsLinked to original sources

Management of the flap tracheostomy. An experimental study.

The flap tracheostomy was studied in 25 adult canines to further investigate its best management. Tracheostomies were performed by employing the inverted U flap incision in the trachea. After decannulation, the flap was either formally resewn to the trachea, bluntly dissected from the surrounding soft tissues, or left in place. The time required for epidermal closure over the tracheostomy site was measured, along with fixation of skin to soft tissues in the area. Histologic examinations were made, and tracheal dimensions were calculated on sections through the stomal area. More rapid skin closure and less soft tissue fixation occurred in animals that underwent resuturing or release of the tracheal flap. In all groups, cartilage viability and regrowth were noted. Tracheal diameters were maintained in all groups, but smoother contouring was seen with resuturing. Additional support for the flap tracheostomy is provided from this animal experimentation.

Animals

Pseudoforeign bodies of the cervical region.

Previous reports have enumerated a large variety of foreign bodies in the upper airway and digestive passages. Clinical emphasis has stressed diligence in detecting any possible foreign object. Three cases are presented in which a diagnosis of a foreign body in the cervical region was made and endoscopy advised. In each case, there was some discrepancy between the physical findings and the location of the foreign body. Further study revealed these presumed objects to be ossification centers within one of the laryngeal cartilages. The existence of these centers is stressed as a reminder in the evaluation of a patient with a history suggesting foreign-body ingestion.

Adult

Tracheal incision as a contributing factor to tracheal stenosis. An experimental study.

Tracheostomies were performed on 25 mongrel dogs, employing either a vertical or inverted U flap incision in the trachea. Following cannulation for 14 days, the animals were maintained for three months and endolarygeal photographs were taken. At the time of autopsy, comparisons of the gross specimens were carried out, as well as histological sectioning through the tracheal stomal area. Both endolaryngeal examination and study of the gross specimens at autopsy revealed less distortion of the tracheal lumen following the flap versus vertical tracheostomy, especially in those animals having the flap of cartilage resewn to the trachea at the time of decannulation. Measurements of the cross sectional area at the tracheal stoma were also made. In animals having a flap tracheostomy, the stomal lumen was preserved, regardless of resuturing the flap. However, animals having a vertical tracheostomy lost an average of 18% of the tracheal area when compared with those having a flap incision. Histological examination revealed cartilaginous growth across the tracheostomy incision only in animals having the flap tracheostomy. Support for the flap tracheostomy is provided from animal experimentation.

Animals