Hormonal(Cortisol, Growth Hormone, Lutenizing Hormone, Thyroid Stimulting Hormone Changes of Rabbits Exposed to Microwaves

Following irradiation with 2.45GHz microwave, pituitary hormonal changes in rabbits were observed. A 30 rabbits (New Zealand, White, Male) were used for the experiments, 10 for each experiment immediately following one two and four weeks after irradiation with amount of 2.4 Joule/cm2, 4.8 Joule/cm2 and 7.2 Joule/cm2 respectively. The following are the results of the study as a conclusion. The secretion of cortisol hormone increased immediately after the exposure and then decrease to below that of the control group until two weeks afterwards, followed by recovery phase with secretion level approaching that of the central group in 4 weeks. Lutenizing hormone showed a tendency of increase from the first week of exposure, rather than immediately after, lasting up to over four weeks, In the irradiation group for 30 min, however, the increase began immediately after the exposure. The secretion of of growth hormone showed an insignificant, increase after the second and fourth weeks over the control group. The duration of exposure did not have much effect on the hormonal secretion. Thyroid stimulating hormone showed a different pattern changes: increase of immediately after exposure, decreased in two weeks, and then approaching the level of the control group after four weeks.

Follow-up Lumbar Spondylolisthesis after Pedicle Screw Fixation

Sixty five patients of lumbar spondylolisthesis were treated with pedicle screw fixation during last 3-years. Roy-Camille plate system has been used in 17 patients, steffee system in 41 and Puno/Winter/Byrd(PWB) system in 7. We analysed the changes of symptoms and radiological findings during follow-up observation(average 15 months). After surgery the average time for low back pain reduction was 7 months, Twenty patients(3%) complained a graft donor site pain initially, but almost except one were alleviated after 7.3 months later on an average. Radiologically the reducton degree of the displacement was from 24% on preoperative state to 12% on last follow-up and pseudoarthrosis rate was 8%. Surgical result was evaluated by our score rating system, according to that system 64.5% of the patients had satisfactory result.

The Correlations between the Hematoma Volume and the Changes of ICP, Blood Pressure & Prognosis in the Spontaneous Intraparenchymal Hemorrhage

The development of CT scan and stereotaxic surgery with urokinase irrigation made possible early diagnosis and improved survival in the patients of spontaneous intraparenchymal hemorrhage. We had clinically reviewed and analyzed 30 patients of stereotactically treated spontaneous intraparenchymal hemorrhage, according to the hematoma volume, ICP, wital signs, GCS and prognosis. The results were summarized as follows: 1) As the hematoma volume increasing, ICP was also increased(p<0.05). 2) The systolic arterial pressure was increased as the hematoma volume increasing(p<0.05). 3) Mean ADL was 55(26% and ADL level were decreased in cases of large hematoma(p<0.05). 4) As the hematoma volume increasing, the level of verbal GCS and total GCS was low(p<0.1). 5) No significant correlation was noted between the hematoma volume and complications(T test).

Combined Approach for Large CPA Tumor

With large CPA tumors, the goal of surgery is safe total removal of the tumors and preservation of nearby neural structures. Although the suboccipital approach can be made for large CPA tumors, combined approach is more preferable method for the wide exposure of the CPA including brain stem and the lower cranial nerves. We have recently experienced favorable results by combined approach. Total removal of large tumors were obtained by these approaches. The authors present surgical points of view and a brief review of literature.

Nonsurgical Management of Parasagittal Epidural Hematoma Report of 4 Cases / 영남의대학술지

Nonsurgical management of four cases of the parasagittal epidural hematoma were experienced. Patients were mildly symptomatic or minimal neurological disturbances on admission. Patients were treated conservatively because of stable neurologic sign. All patients had who diastatic fracture and / or suture have become a complete neurological recovery with satisfactory absorption of EDH over a period of 5 to 12 weeks.