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T Suzutani

Publications and source records attributed to T Suzutani.

68 records · Page 4Linked to original sources
PubMed1978

[Studies on the estimation of the postmortem interval. 2. The postmortem lividity (author's transl)].

The authors have investigated the relationship between the postmortem interval and the postmortem lividity of 430 persons who had died at known times and had been subjected to medico-legal autopsies. 1) For determining the postmortem interval from the postmortem lividity, the examination of the fading of the lividity upon pressure is most reliable. Among various methods of pressing, the pressing by means of a narrow side-edge of a hard instrument such as a pincette offers more accurate results than those by means of the fingerpressure which is commonly adopted in the present medico-legal practice. 2) The rate of nonfading is higher in summer among the cadavers within 6-12 hours after death, while over 12 hours it does not show any seasonal variation. Considering the influence of the cause of death, death by asphyxia and death by intracranial injuries show lower nonfading rate than death by exsanguination and natural death. These differences are observed merely within 24 hours after death. 3) Nonfading occupies one-third of cases during 6-12 hours after death and exceeds a half during 12-24 hours and exceeds two-thirds during 1-3 days and occupies almost all cases over 3 days. Namely, complete fading is observed within 3 days after death.

Adolescent↗
PubMed1978

Studies on the estimation of the postmortem interval. 3. Rigor mortis (author's transl).

The authors have devised a method for classifying rigor mortis into 10 types based on its appearance and strength in various parts of a cadaver. By applying the method to the findings of 436 cadavers which were subjected to medico-legal autopsies in our laboratory during the last 10 years, it has been demonstrated that the classifying method is effective for analyzing the phenomenon of onset, persistence and disappearance of rigor mortis statistically. The investigation of the relationship between each type of rigor mortis and the postmortem interval has demonstrated that rigor mortis may be utilized as a basis for estimating the postmortem interval but the values have greater deviation than those described in current textbooks.

Adolescent↗
PubMed1978

[Studies on the estimation of the postmortem interval. 5. The turbidity of the cornea (author's transl)].

The authors have investigated the relationship between the postmortem interval and the turbidity of the cornea of 410 persons who had died at known times and had been subjected to medico-legal autopsies in our laboratory. The conclusions are as follows: 1) Differences due to the states of the eyelids of cadavers, either open or closed, gave rise to slight variations of the turbidity of the cornea only within 12 hours after death. Slight variations due to age and sex were seen only from 12 to 24 hours after death and only in the age group of 0 to 19 years. Seasonal variation was not seen on the cadavers which had remained indoors at the Hokkaido districts. 2) In death from exsanguination none became a state of the strong turbidity. In death from intracranial injuries and asphyxia the strong turbidity developed earlier than in the other types of death. 3) When the cornea is transparent, the time which has elapsed since death is less than 36 hours, with few exceptions, with eyelids either open or closed. On the cadavers with closed eyelids, the week turbidity of the cornea is seen between 6 hours and 3 days, the moderate turbidity between 12 hours and 2 weeks and the strong turbidity over 18 hours.

Adolescent↗
PubMed1978

[Studies on the estimation of the postmortem interval. 6. The putrefaction (author's transl)].

The authors have investigated ten kinds of putrefactive findings on 368 cadavers which were subjected to medico-legal autopsies in our laboratory and have come to the following conclusions. 1) Concerning the occurrence of the putrefactive findings, seasonal variation was not seen on the cadavers which had remained indoors in the Hokkaido districts. No variation due to age and sex was seen. The occurrence of the findings was less frequent in death from exsanguination, traumatic shock and cardiac tamponade. 2) The putrefactive findings can be utilized as a criterion for estimating the postmortem interval; the interval is estimated to be over 6 hours when the pericardial fluid is turbid, over 12 hours when exudation of putrefactive fluid, gas formation, blood-stained peritoneal fluid or blood-stained pericardial fluid is present, over 18 hours when greenish discoloration of the skin, network of the skin or blood staining of the endocardium or the endothelium is seen, over 2 days when bullae is present on the skin, over 5 days when the pericardial cavity is dry, within 6 days when none of them are present.

Adolescent↗
PubMed1978

[Studies on the estimation of the postmortem interval 7. Cadavers in the water and privy (author's transl)].

The authors have investigated 17 kinds of findings of 34 cadavers in the water and 17 newborn-infant cadavers in liquid feces-urine mixture in privies which had remained at known postmortem interval and had been subjected to medico-legal autopsies in our laboratory. The conclusions are as follows: The progress of the cadaveric phenomena in the water and liquid feces-urine mixture is slower than in the air. The time ratio of the progress of the phenomena in the media to those in the air is not the same for all kinds of the findings, and hence it is not possible to apply the criterion of the estimation of the postmortem interval for the cadavers in the air to those in the water and liquid feces-urine mixture by any correction.

Adolescent↗
PubMed1978

[Studies on the estimation of the postmortem interval. 8. Burned bodies (author's transl)].

The authors have investigated 15 kinds of findings of 30 bodies burned at known times and autopsied in our laboratory. The conclusions are as follows: As the criteria for determining the time of death, external findings of cadavers burned lose value considerably, but internal findings, especially undigested food in the stomach remain as valuable as in ordinary circumstances. The usual criteria can be applied with the same degree of success to burned bodies, because appearances of findings caused by cadaveric phenomena show neither acceleration nor retardation in bodies burned so far as they are not severely destroyed.

Adolescent↗
PubMed1977

[Chemico-analytical studies on the water content of the human tissues. 2. Significance of the variation of water content (author's transl)].

The authors have calculated the amounts of solid matters from the values of water contents determined on 14 sorts of tissues of 41 cadavers and have found that the variation of amounts of solid matters among the same sort of tissue are very big. Accordingly it may be rational to express the values of concentration based on dry weight as to the substances mainly bound to solid matters in tissues and based on fresh weight as to those mainly dissolved in water in tissues.

Adolescent↗
PubMed1977

[Interaction between electrode mercury of polarography and dissolved oxygen in sample solution (author's transl)].

The dissolved oxygen in sample solution produces the reduction wave with remarkable maximum by D.C. polarograph. The height of the maximum wave decreases with the increase of surface and duration of contact with electrode mercury. It has been demonstrated that the decrease of height of maximum wave depends on the decrease of dissolved oxygen in sample solution and the authors have assumed that the decrease of dissolved oxygen is due to the adsorption of oxygen on electrode mercury.

Adsorption↗
PubMed1977

[Studies on the estimation of the postmortem interval. 1. The temperature of cadaver (author's transl)].

The relationship was investigated between the postmortem intervals and the rectal temperatures of 35 persons who had died at known times and had been subjected to medico-legal autopsies after exposed to changed environments. The influence of air temperature, body size and cause of death upon the cooling rate of cadaver has been found to be complex and not to be analyzed quantitatively. It has been concluded that the time of death cannot be estimated merely by means of the temperature reading of cadaver.

Adolescent↗
PubMed1976

[A statistical study of autopsy cases in the department of legal medicine, Hokkaido University School of Medicine, during the last 10 years (author's transl)].

The mediocolegal autopsies performed in the Department of Legal Medicine, Hokkaido University School of Medicine, during the 10-year period, 1965-1974 were 617 cases, 87 of them in newborns, 530 in infants and adults. Of cases autopsied as homicidal or suspicious deaths in infants and adults, 88.5% were recognized to be due to external causes, 9.1% to disease conditions and 2.5% undetermined. Of neonatal deaths, 10.3% were stillbirth, 78.2% live birth and 11.5% undetermined. Among the deaths due to external causes in infants and adults, 43.3% were homicidal, 7.2% suicidal, 32.6% accidental and 16.6% undetermined. Of external factors causing death, 42.9% were force, 36.8% asphyxiaton, 8.0% chemical substances and 8.0% heat. The causes of homicidal deaths inflicted with cutting or piercing instruments were circulatory disturbance, asphyxia and infection. In deaths inflicted with blunt instruments, they were mostly injuries of central nervous system and circulatory disturbance in the minority. All categories of causes of death were recognized in accidental deaths. All neonatal deaths were due to external causes. Their causes of death were mostly asphyxia and blunt force injuries of head.

Adolescent↗
PubMed1976

[Chemico-analytical studies on the water content of the human tissues. 1. Investigation of the method of oven-drying at 105 degrees C (author's transl)].

By heating at 105 degrees C in a constant temperature electric oven, a 35 ml crucible becomes completely dry in an hour and 2 grams of human tissue in 48 hours. Within 5 minutes after taken out from an oven and allowed to stand in a room, a dried crucible and tissue become wet with moisture in the air and their water content reaches equilibrium and saturation. Thereafter the weight of the crucible remains constant for 5 days, that of the tissue for 30 minutes. A major portion of increased weight of a crucible containing tissue by moisture depends on the moisture of a crucible, whereas the moisture of tissue is extremely small being under 1.0%. Consequently it is sufficient to cool samples taken out from an oven in a room and to weigh within 30 minutes. There is no necessity for cooling them in a desiccator.

Body Water↗