Biomedical subjects

P Randall

Publications and source records attributed to P Randall.

At least 73 records · Page 4Linked to original sources

PubMed1977

Immunological components of rabbit fallopian tube fluid.

Explore the source record for details and available documents.

Alcohol Oxidoreductases↗

PubMed1976

Craniofacial surgery: present and future.

The possibilities for radical craniofacial restructuring have increased dramatically in the past 6 years with the development of craniofacial surgery. The field developed from a background of patients with major craniofacial birth defects allowing orderly planning and expansion to correction of a multitude of other craniofacial structural problems. The procedures concentrate upon changing the skeletal structures using extensive subperiostial dissection of soft tissue, and adding bone to fill in areas of deficiency. There are three grades of complexity in craniofacial procedures. After extensive soft tissue sub-periostial stripping about the orbits and upper face, the simplest form consists of onlay bone grafts. The next most complicated involves osteotomies to shift the face into a more normal position. In its most complicated form, abnormal proportions of bone are removed and the orbits or cranium are shifted into a new or normal position. We have had experience with 69 patients since September, 1972. Thirty-six have had intracranial procedures. Infection has been the most serious problem, and there have been no instances of death or blindness. A number of lesser problems occur. Future applications of craniofacial surgery are appearing with great frequency as more experience is gained with its uses. It has particular application in acute and late reconstruction of patients with traumatic defects about the face. Preventive osteotomies are an area with great potential, by releasing stenotic areas of bone and allowing the developing brain to mold the upper face and orbits. There is also applicability in surgery of tumors about the craniofacial structure and in cosmetic surgery.

Adolescent↗

PubMed1976

Preservation of a posterior pharyngeal flap during maxillary advancement.

In maxillary advancement procedures, a previously existing posterior pharyngeal flap can be preserved by lengthening it. A technique for this and its results in two cases are presented.

Adolescent↗

PubMed1976

Airway hazards associated with pharyngeal flaps in patients who have the Pierre Robin syndrome.

We describe 3 patients with the Pierre Robin Syndrome who developed severe problems of airway obstruction after having the cleft palate closed and a pharyngeal flap done simultaneously. We now believe that, even at a later age, pharyngeal flaps should be done in these patients only after a most careful assessment of the airway competence.

Airway Obstruction↗

PubMed1975

Structural goals in craniofacial surgery.

Major craniofacial abnormalities can be considered as a group for purposes of operative planning. Known normal relations define what is abnormal and indicate goals to be achieved with the craniofacial operative procedures. The principle syndromes with significant facial structural changes amenable to such surgical corrective procedures are craniofacial stenoses, hypertelorism, mandibulofacial dysostoses, median facial clefts, residua of encephaloceles, and trauma. Deformities primarily involve the middle and upper thirds of the face. In planning, abnormal relations and structures must be clearly defined utilizing patient examination, x-rays, dental study models, and photography. Standards of norm indicating goals for the corrective procedure are also based on studies using these tools, data from previous publications, and measurements directly from skulls. Precise measurements about the orbits and maxillary-mandibular relation are the keystone for planning. Soft tissue, nose, and ear alterations are based on already widely known concepts of norm and symmetry. Bony interocular distance, medial intercanthal distance, height and width at the orbital rim of the bony orbits, orbital shape, orbital axis, and orbital volume as determined by measurement with an exophthalmometer are useful in determining what is to be done about the orbits. Cribiform plate level, anterior cranial base, length and contour, and size of the zygomatic arches are important dimension considerations. Paranasal sinus size and location is important. These considerations are essential prior to any major facial structural changes.

Adult↗

PubMed1975