Biomedical subjects

D Y Dong

Publications and source records attributed to D Y Dong.

3 recordsLinked to original sources

PubMed1988

Experimental permanent artificial tendon for the hand.

The aim of this study was to develop a porous silastic tube with filmy wall acting as permanent artificial tendon. Twelve mongrel dogs were used. Peronaeus longus and tibialis anticus were exposed, divided in two places, and sutured in situ; they were then covered by the silastic tube. A dog was sacrificed after 1, 2, 4, 6, 8, 10, 12, 16, 20, 24, and 44 weeks; specimens were removed. Each preparation was studied as follows: (i) gross observation and light microscopy for tendon preparations and (ii) transmission electron microscopy, scanning electron microscopy and phase microscopy for the pseudosheath. Our study showed that healing of the tendon was mainly an extrinsic mechanism and that the pseudosheath formed by the silastic tube can prevent the adhesion of the surrounding tissue; it follows that the use of an artificial tendon, including a tendon-graft coated with a silastic tube, in reconstruction of the flexor digital tendon in the hand is a feasible procedure. The appropriate porous diameter and porous distance should be studied further. Tendon gliding depends mainly upon the gliding plane between the composite body of the tendon and the loose connective tissue around it.

Animals↗

PubMedDate not supplied

Successful CPCR in two patients.

Authors have salvaged two cases suffering from respiratory and cardiac arrest with active effective cardiopulmonary cerebral resuscitation (CPCR). One was a 53-year-old woman with myasthenia gravis whose tracheostomy tube was dislodged on the way to being transferred to the ICU. Another case, a 56-year-old farmer, the victim of an anesthesia accident which occurred in the cystoscopic examination room where equipment for CPR was unavailable. The patients were discharged with complete recovery of brain function after 64 days of unconsciousness in case 1 and weaning off after 74 days of mechanical ventilation in case 2. It is very important for the success of CPR to understand and practice the technique of CPR in the order: A (airway), B (breathing) and C (circulation). Early intubation and defibrillation is effective measurements for successful CPR. Training programs of CPR must be held not only for medical personnel but also for citizens in the developing counties.

Anesthesia, Epidural↗

PubMedDate not supplied

Study of permanent artificial tendon.

The aim of the present study was to develop a porous, silastic tube with filmy wall acting as permanent artificial tendon. Twelve mongrel dogs were used. Peronaeus longus and Tibialis anticus were exposed respectively, divided in two places and sutured in situ. They were covered by the above-mentioned silastic tube. One dog each was sacrificed after 1, 2, 4, 6, 8, 10, 12, 16, 20 and 24 weeks, and 11 months; specimens were removed. Each preparation was studied as follows: gross observation and light microscopy for tendon preparation; transmission electron microscopy, scanning electron microscopy and phase microscopy for the pseudosheath. Our study showed that healing of tendon was mainly extrinsic mechanism and that the pseudosheath formed by silastic tube can prevent the adhesion of the surrounding tissue; therefore, use of the artificial tendon including a tendongraft coated with a silastic tube in reconstruction of flexor digital tendon in the hand is procedure feasible. But what the appropriate porous diameter and porous distance are, must be studied further. Tendon gliding mainly depends upon the gliding plane between the composite body of the tendon and the loose connective tissues around it.

Anastomosis, Surgical↗