PubMed Health⌕ Search

Biomedical subjects

R G Shamaskin

Publications and source records attributed to R G Shamaskin.

9 recordsLinked to original sources
PubMed1989

Intraosseous and extraosseous calcifying odontogenic cyst (Gorlin cyst).

This retrospective study of 15 central and five peripheral calcifying odontogenic cysts (COCs) was undertaken to compare the characteristics of these two lesions. The data reveal that the central COCs were more common than peripheral lesions by a 3:1 ratio and that they were usually diagnosed in the second decade of life, whereas the peripheral ones were usually noted after the age of 50. Seven of the 15 central COCs (47%) were associated with odontomas, and three (20%) with dentigerous cysts. Conservative enucleation or excision was the treatment of choice.

Adolescent↗
PubMed1987

Assessment of recovery from injury to inferior alveolar and mental nerves.

Thirty-four patients had surgery near but not transecting either the inferior alveolar nerve or mental nerve. Thermal tests revealed that between 62% and 81% of the nerves that were evaluated had sensory deficits. Sixty-seven percent of patients had abnormal intraoral and extraoral responses to fine tactile testing. The least discriminative test was two-point contact. A smaller percentage (14% to 23%) were hyperpathic to heat stimuli, and a few (5% to 15%) had completely normal thermal and tactile sensation. A high percentage (43% to 71%) of patients elected to have corrective nerve surgery.

Adolescent↗
PubMed1985

Evaluation of rebreathing in various modifications of the Mapleson-D system.

Several modifications of the Bain system for nitrous oxide analgesia or general anesthesia were tested for rebreathing and retention of CO2. The classic Bain circuit causes the most rebreathing as measured by the fractional concentration of CO2 in a sample of inspired gas (FICO2), but stimulation of the respiratory system seems to allow near normal end tidal CO2 and arterial CO2 tensions. The most predictable systems that have the least amount of rebreathing are those that have the least dead space.

Anesthesia, Dental↗
PubMed1982

Intra-articular meniscus dysfunction surgery. A preliminary report.

Surgical management of painful intra-articular functional disorders of the temporomandibular joint has become a topic of much discussion. Data concerning the results of surgery are lacking not only because of the recent renewed interest in this surgery but also because of the small number of cases reported. The present study was undertaken to review the experience at the Medical College of Virginia/Virginia Commonwealth University Temporomandibular Joint and Facial Pain Center with surgical management of intra-articular meniscus dysfunction (IMD) as a specific entity. A review of IMD, criteria for establishment of the diagnosis, initial management, rationale for the surgery, type of surgery, and postoperative results in twenty-three cases will be discussed.

Adolescent↗
PubMedDate not supplied

Analysis of cardiovascular changes and arterial blood gases in patients resistant to methohexital anesthesia.

Two studies were done to evaluate the patient who appears to be clinically resistant to incremental methohexital infusion for general anesthesia. A retrospective study revealed that 9% of the 513 patients developed resistance to methohexital maintenance and required a volatile inhalation anesthetic supplement. The cardiovascular and arterial blood gas analysis in a prospective study failed to disclose any gross changes that would explain the physiology associated with patients resistant to methohexital anesthesia. To maintain adequate anesthesia depth, doses of methohexital ranged from .07 to .12 mg/kg/min or 4.1 to 8.2 mg/min.

Adult↗
PubMedDate not supplied

Analysis of preoperative laboratory values prior to outpatient dental anesthesia.

A retrospective study of 672 ASA Class I patients undergoing outpatient general anesthesia for oral surgical procedures was performed to evaluate the significance and incidence of abnormal preoperative serum glucose and hematocrit levels. There was an 11% overall incidence of "abnormal" values. Specifically, 6% of the patients had serum glucose levels below 60 g/dl and 5% had hematocritis less than 35 mg/dl. These values are not outside the realm of normal and had no impact on the preoperative, perioperative, or postoperative anesthetic management. The results of this study and review of the suggest that routine laboratory analysis is of little value in the anesthetic management of ASA Class I patients in which a thorough history and physical examination is obtained.

Adult↗