Biomedical subjects

M Soutsu

Publications and source records attributed to M Soutsu.

4 recordsLinked to original sources

PubMed1988

[Auditory brain stem responses of knocked-out boxers].

We studied about ABRs of boxers, who receive repeated impact to the head and are often concussed, immediately after bouts or training in order to reveal the influence of knock-out or repeated mild head injuries. Forty-six male professional boxers ranged from 18 to 28 years old, were examined at the stadium and the boxing gymnasium. 85 recordings were done since some boxers were examined more than once. 27 cases of pre-exertion group (resting: 5, pre-sparing: 10, pre-training: 12) were compared with post-bout group (35 cases). The I-V IPL (interpeak latency) of pre-exertion group was 4.30 +/- 0.18 m sec and that of post-bout group was 4.02 +/- 0.15 m sec. The latter showed significantly shorter (p less than 0.01) IPL. Among 35 cases of post-bout group, the I-V IPL of knocked-out group (14 cases) was 4.04 +/- 0.11 m sec, and that of non-knocked-out group (21 cases) was 4.01 +/- 0.17 m sec. There was no significant difference. The I-V IPL of pre-sparing state was 4.24 +/- 0.15 m sec, and that of post-sparing state was 4.10 +/- 0.13 m sec. The difference was significant between these two groups (p less than 0.01). After training without impacts to the head, I-V IPLs were shortened in all 12 cases. IPL of pre-training state was 4.34 +/- 0.22 m sec, and that of post training state was 4.19 +/- 0.22 m sec. This also showed significant difference (p less than 0.01). On one boxer, we recorded ABRs during disturbance of consciousness. He was knocked-out by a blow to the face in the first round, and was completely unconscious. ABRs were recorded twice immediately after he had been laid on the bed.(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗

PubMed1988

[Latency changes in auditory brainstem response correlated with tympanic membrane temperature].

We had examined auditory brainstem responses (ABRs) of boxers in order to study human cerebral concussion. ABRs were not prolonged after bouts or knock-out but were unexpectedly shortened after any exertion with or without impact to the head. It was supposed that hyperthermia induced by exertion shortened brainstem conduction velocity as it occurred in peripheral nerve. We investigated correlation of ABR latency and tympanic membrane temperature, which indicated hypothalamic temperature or central nervous temperature, during exertion and body heating. I. Exertion group Six young males aged from 21 to 24 years old were examined (the two were examined twice). T ty (tympanic membrane temperature) and T rec (rectal temperature) were monitored. ABRs and carotid blood flow were examined (QFM). Then subjects were covered with PVC clothes and exercised on bicycle ergometer for 12 approximately 38 min. After T ty reached approximately one degree higher (degrees C) than base line, ABRs and carotid blood flow were recorded in the course of cooling down. T ty was elevated by 0.82 +/- 0.27 degrees C T rec, 0.60 +/- 0.26 degrees C after exertion. ABR I-V IPL was shortened from 4.24 +/- 0.60 to 4.10 +/- 0.11 msec (p less than 0.01) and it was correlated with T ty change rather than T rec or carotid blood flow. ABR IPL returned to base line as T ty came down. II. Heating group Six young males were examined. Hyperthermia was induced by electrical blanket or immersing in hot water (41 +/- 1 degrees C).(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗

PubMed1984

[Surgical treatment of cerebral paragonimiasis miyazakii].

An operated case of cerebral paragonimiasis miyazakii was reported. A 25-year-old man was admitted to our hospital on Jan. 25, 1982, because of weakness, sensory disorder and focal convulsion of the right upper limb. He complained of slight headache but had no sign of meningeal irritation nor inflammation. CT scan revealed a left parietal low density mass with irregular ring-like contrast enhancement. Left carotid angiogram showed stretched arteries around the mass. Laboratory findings were normal except for eosinophilie (17%). Chest X-P was normal. Operation was performed under diagnosis of glioblastoma on Aug. 6, 1982. The tumor was well-circumscribed and had a firm capsule which containing necrotic substance. The tumor was removed totally and the bone flap was also removed since slight brain swelling was seen. Histologically it proved to be a granuloma and four eggs of helminth were found in the necrotic tissue. Post operative state of the patient was satisfactory and cranioplasty was performed 3 weeks later. On Aug. 31, he began to complain of chest pain, cough and hemosputum, and chest X-P disclosed a nodular shadow in the lower lobe of the right lung. Paragonimiasis was strongly suspected because he had a history of having three fresh-water crabs (Potamon dehaani) 18 months before. But not egg was found in either sputum nor stool. Skin test with paragonimus westermani antigen was highly positive.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗

PubMed1982

[Anatomical asymmetries of the frontal and parietal lobes (author's transl)].

The anatomical asymmetries of the cerebral hemispheres were described by several investigators. These evaluations were done in postmortem condition. With the introduction of the CT scan, the cytoarchitecture of the human brain in vivo are well appreciated. The purpose of this study is to demonstrate the functional and anatomical asymmetries on the frontal and parietal lobes.

Adolescent↗