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Biomedical subjects

H Inada

Publications and source records attributed to H Inada.

At least 127 records · Page 7Linked to original sources
PubMed1987

Recent morbidity trends in myocardial infarction in Japan: investigation of death certificates and the survival rates at coronary care units.

To elucidate recent trends in the mortality and morbidity of myocardial infarction (MI), we investigated death certificates and changes in the survival rate of MI patients at coronary care units (CCUs), which may affect the death rates. For all cases of MI, acute heart failure (AHF), heart failure (HF) as underlying cause, and hypertension as underlying cause with HF or AHF (categorized as hypertensive heart disease) on death certificates in two rural and two urban populations between 1981 and 1984, medical records were reviewed and case histories obtained from interviews with patients' families to validate the diagnosis. The number of MI deaths on the death certificates was not underestimated because some MI deaths were misdiagnosed as AHF, HF and hypertensive heart disease and some MI death certificates were misdiagnosed. Survival of MI patients at CCUs improved in several major cities, Tokyo, Osaka, Wakayama and Asahikawa between 1978 and 1984; a total of 4318 MI deaths were estimated to be averted by CCUs in 1984 compared with the number of deaths in 1978. Therefore, improvement of MI cases at CCUs may be one of the factors attenuating the rise in death rates in all of Japan.

Coronary Care Units↗
PubMed1985

[Surgical treatment for thoracoabdominal and suprarenal abdominal aortic aneurysm].

We experienced 4 cases of thoracoabdominal and suprarenal abdominal aortic aneurysm in the last 6 months. There were 3 males and 1 female ranging in age from 43 to 66 years, 2 with an etiology of aortitis syndrome, 1 with non-specific inflammation and 1 with atherosclerosis. In all cases the modified Hardy procedure was employed. A 18 to 22mm X 9 to 11mm bifurcation, double velour woven dacron graft was sutured from the side of the lower descending thoracic aorta to the side of both common iliac arteries. Grafts of the same kind as above 6 to 7mm in size were attached from the main graft to major visceral arteries by end-to-end or end-to-side anastomosis. A permanent aortic-excluding clamp was attached to the normal aorta just proximal to the aneurysm. Another clamp, or double ligature with silk, was placed on the lower abdominal aorta or both common iliac arteries distal to the aneurysm. No renal and spinal preservation of any kind was employed, but renal failure and paraplegia were not recognized in any of the cases. One patient died 2 days and another 21 days after the operation due to uncontrollable bleeding and multiple organ failure. The other two are doing well.

Adult↗
PubMed1984

Computer-assisted education system for arrhythmia (CAESAR).

A computer-assisted education system for arrhythmia (CAESAR) was developed for students to acquire the ability to logically diagnose complicated arrhythmias. This system has a logical simulator of cardiac rhythm using a mathematical model of the impulse formation and conduction system of the heart. A simulated arrhythmia (ECG pattern) is given on a graphic display unit with simulated series of the action potential of five pacemaker centers and the "ladder diagram" of impulse formation and conduction, which show the mechanism of that arrhythmia. For the purpose of the evaluation of this system, 13 medical students were given two types of tests concerning arrhythmias before and after 2-hr learning with this system. The scores they obtained after learning increased significantly from 73.3 +/- 11.9 to 93.2 +/- 3.0 (P less than 0.001) in one test and from 47.2 +/- 17.9 to 64.9 +/- 19.6 (P less than 0.001) in another one. These results proved that this CAI system is useful and effective for training ECG interpretation of arrhythmias.

Arrhythmias, Cardiac↗
PubMed1984

[Surgical treatment of abdominal aortic aneurysm in the elderly].

Because of the increasing longevity of man, more elderly patients of abdominal aortic aneurysm are being considered for surgical treatment. It is the purpose of this report to provide the data based on analysis of 23 patients, 70 years of age or older, compared with 26 patients, under 70 years of age, seen at our institution during the last 8-year period so that a rational decision can be made regarding abdominal aortic aneurysm operation in the elderly. Operation in the elderly group (n = 17) and in the younger group (n = 25) was associated with 5.9% and 4.0% operative mortality, respectively. Calculated actuarial survival at 5 years was 69.2% for operated elderly, 0% for non-operated elderly and 57.8% for operated younger groups. Rupture of abdominal aortic aneurysm was a high cause of death (40%) in the non-operated elderly group. Considering operative mortality, long-term survival and natural history of unoperated abdominal aortic aneurysms, our conclusion is that regardless of age of patients and size of aneurysms, operation should be recommended as a general rule for the elderly as for the younger patients.

Adult↗