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Biomedical subjects

M Okajima

Publications and source records attributed to M Okajima.

At least 55 records · Page 3Linked to original sources
PubMed1987

Study on congenital complete heart block in children by 24-hour ambulatory electrocardiographic monitoring.

Ambulatory electrocardiographic monitoring was performed in 18 children with a congenital complete heart block (CCHB). They had no cardiac structural anomalies. These patients could be divided into 3 groups according to the pattern of fluctuations in beat-to-beat ventricular rates. Type 1 patients showed rapid and transient fluctuations and demonstrated a high correlation between atrial and ventricular rates. Type 3 patients showed a constant ventricular rate and little variation through the 24 hour period and there was no appreciable correlation between atrial and ventricular rates. Twelve of 18 patients had additional arrhythmias. A few sporadic ventricular premature contractions (VPCs) were found in 9 patients, and bigeminy of VPCs or ventricular tachycardias were seen in 2 patients during exercise. Frequent and sudden prolongation of RR intervals was found during sleep in 3 patients. The longest intervals of ventricular asystoles were 7.2, 3.2 and 3.2 sec, respectively. The mechanism of this phenomenon appeared to be not only an exit block, but also arrest or a lack of automaticity of a subsidiary pacemaker. One of these patients developed frequent Stokes-Adams attacks. Type 3 patients with sudden prolongation of RR intervals and/or frequent ventricular arrhythmias should be under careful observation. Ambulatory electrocardiographic monitoring is recommended for children with CCHB for evaluation of potential risk factors for Stokes-Adams attacks.

Adolescent↗
PubMed1985

Anatomical and microscopic study of the volar dermal ridges of the rat (Rattus norvegicus).

The epidermal ridges of the rat (Rattus norvegicus), which are distributed only on the volar pads and digital apices, were studied. Examination of the ridges was difficult on the epidermal surface, as the undulations expressed on the epidermis are weak. Therefore, the dermal surface, prepared by alkaline solution treatment, was inspected by scanning electron microscopy and staining with toluidine blue. The dermis of the pads and digital apices is composed of ridged and rippled areas. The ridged area, where sweat ducts are distributed, is constructed of grooves and ramparts. Frequently, the sweat duct is surrounded by a dermal collar, and the groove is separated by a dermal partition. The grooves and ramparts display dermatoglyphic configurations, such as whorls, loops, cusps, triradii, and some other patterns, which are peculiar to each pad and digital apex and comparable to dermatoglyphic patterns of man and other primates.

Animals↗
PubMed1985

Usefulness of long-term ambulatory electrocardiography in heart disease screening system for school children and high school students.

Long-term ambulatory electrocardiography was utilized in a heart disease screening system for elementary school children and junior and senior high school students in Nagoya, Japan. The elementary school children, and junior and senior high school students who have serious arrhythmias or potential risk of syncope and sudden death are the subjects of ambulatory monitoring. Of 42 school children and students taking ambulatory electrocardiography for frequent ventricular premature contractions, 8 had Lown's grade 4A, 4B or 5. The cases with third-degree AV block showed ventricular tachycardia or frequent ventricular premature contractions during exercise in ambulatory electrocardiograms. These complex ventricular arrhythmias are possible risk factors of sudden death. It has been proved that ambulatory monitoring is beneficial in the screening and management of serious arrhythmias in the heart disease screening system.

Adolescent↗
PubMed1984

Dermatoglyphic examination of the dermal surface of bodies in advanced postmortem condition.

A new technique was applied to examine dermatoglyphic characteristics in dead bodies in advanced postmortem conditions. For this purpose, the volar skin was first fixed in formalin, incubated in 1 N potassium hydroxide solution, and then the dermis was exposed. Dermatoglyphic features were inspected on the dermal surface by staining with toluidine blue solution. This technique may be useful in cases in which the regular examination process does not provide favourable results because of advanced decomposition of the skin.

Adult↗
PubMed1984

Successful replantation of a leg--a 7-year follow-up.

This paper presents the 7-year follow-up of successful replantation in a patient whose right leg was amputated. The patient's daily activities surpass those that would have otherwise been attained by the use of an artificial leg. The authors believe that this patient is one of the most successful cases of replantation of the leg, with a long follow-up period.

Adult↗
PubMed1984

Quantitative and genetic features of epidermal ridge minutiae on the palm of twins.

The total minutia count (TMC) and fork index (FI), i.e., the proportion of forks in total minutiae, were examined in palm prints of 20 pairs each of monozygotic and dizygotic Japanese twins. No bilateral difference was found in either trait. The mean of the TMC was higher in males than in females, but the FI showed no sex difference. Both traits presented relatively high intraclass correlation coefficients between monozygotic twins, and genetic control of these traits is suggested. However, no correlation was observed between these two traits. A slight correlation was observed between the TMC and the total palmar interdigital ridge count. Some methodological problems concerned with classification criteria were discussed.

Child↗
PubMed1982

[Electrocardiography].

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Diagnosis, Computer-Assisted↗