Biomedical subjects

H Kazuma

Publications and source records attributed to H Kazuma.

8 recordsLinked to original sources

PubMed1996

[The shock patients with the cardiac tamponade resulting from acute type A aortic dissection].

Twelve patients with acute type A aortic dissection were admitted at Ohta-Nishinouti Hospital from Jan. 1991 to Mar. 1994. Three of these 12 cases were in shock with cardiac tamponade on arrival at the hospital. Immediate resuscitative management was necessary for these patients, but pericardiocentasis was fruitless in the first case and emergent thoracotomy had led to the aortic rupture. While the second case was the thrombosed type aortic dissection and successfully performed pericardiocentasis, CT findings showed recanalization of the pseudolumen after a day, then we performed the urgent operation. By means of these experiences, the third case was operated quickly in spite of the thrombosed type aortic dissection, and had good result. We concluded that immediate surgical intervention should be taken to the shock patients with cardiac tamponade resulted from acute type A aortic dissection.

Acute Disease↗

PubMed1994

[Asymptomatic bilateral spontaneous pneumothorax].

Two surgical cases of bilateral pneumothorax founded at a medical examination were reported. Case 1; A 15-year-old male was admitted to our hospital pointed out left spontaneous pneumothorax without complaints. The interval between the first and the contralateral pneumothorax was 3 weeks. He was treated with a one-stage operation through a bilateral axillary incision. Case 2; A 19-year-old male was admitted to our hospital pointed out left spontaneous pneumothorax without complaints. Surgical operation was performed with a left axillary incision. One year after the treatment, he was pointed out right spontaneous pneumothorax on his chest X-ray film. Partial resection of the right lung was performed with a right axillary incision. Of the 261 pneumothorax patients, 28 had bilateral pneumothorax in our hospital. The majority of these patients had complaints which were chest pain, dyspnea and cough. Of the 28 patients, 2 had no complaints at the time of admission. We conclude that we have to follow up carefully the patients with hemilateral spontaneous pneumothorax.

Adolescent↗

PubMed1994

[Coronary artery bypass grafting to total occlusion of all three coronary vessels].

We studied total occlusion of all three coronary arteries. From 1975 to 1992, a total of 4,100 patients underwent coronary arteriography at Show University Hospital. Of these, four patients (0.1%) had complete occlusion of all three coronary arteries and all of them underwent coronary artery bypass grafting (CABG). The mean numbers of coronary risk factors were only 2.3 but history of angina of effort were long-standing such as 4 to 29 years (mean 16.3 yr). All cases had previous episodes of myocardial infarction. Three cases (75%) had aortic aneurysm. One case was also diagnosed as Leriche syndrome besides coexisting aneurysm. Coronary arteriogram showed total occlusion of right coronary artery, left anterior descending artery and left circumflex artery in the segment of 1.6 or 7 and 11 respectively. All cases had intracoronary anastomosis and intercoronary anastomosis. Among 12 occluded coronary arteries of all four cases, 11 were distally visualized with contrast medium via collateral flow but good opacification of the distal coronary trees were not seen. Also proper assessments of cardiac performance including viability of myocardium were not established because all cases were in the state of C.C.S grades IV. But significant clinical recovery were obtained in all cases after CAGB of three or four bypass. We conclude that these results might be a useful suggestion for the treatment of total occlusion of all three coronary arteries.

Aged↗

PubMed1993

International cooperation of Japanese pediatricians with Cairo University Pediatric Hospital.

In connection with 'Child Year' in 1980, an agreement on the construction and donation of a pediatric hospital was concluded between the Egyptian and Japanese Governments. Under this agreement, the Cairo University Pediatric Hospital (CUPH) was opened in March 1983, as a four-storey building with 240 beds, and including four operating rooms, an intensive care unit (ICU) and neonatal ICU. The technical cooperation and supply of medical equipment in all areas of CUPH is ongoing during this project. The subject matter of technical cooperation is as follows. (1) Dispatch of Japanese experts to Egypt for short and long terms. (2) Acceptance of Egyptian trainees to Japan. (3) Supply of medical equipment and materials. Through the first 5 years of this cooperation, the management of ICU, operating theaters, medical and surgical wards has improved markedly with great efforts from the Egyptian and Japanese staff. Based on this successful cooperation, the Pediatric Cardiovascular Center was established in 1988 with a two-storey extension in the hospital including two cardiac operation theaters, ICU and other special facilities. Now, CUPH has become the center of pediatric medical care in not only Egypt but also the surrounding Arabic countries, supported by the friendly and close relationship between Egypt and Japan.

Child↗

PubMed1993

[Single selective cerebral perfusion for aortic arch replacement].

The patients underwent aortic arch replacement for aneurysmal disease from 1988 to 1993 using a simplified cardiopulmonary bypass (CPB) technique with single selective cerebral perfusion (single SCP). Recently cold cerebral perfusion technique was also used. In order to study the effect of this technique, we monitored bilateral carotid artery pressure, blood oxygen saturation of jugular vein and brain oxygenation by near infrared spectroscopy during CPB. Of the ten patients with arch aneurysm, five had urgent operation for ruptured aneurysm. The cold single SCP was accomplished by perfusion to the right axillary artery using separate pump and separate heat exchanger (flow 10-15 ml/kg/min, pressure 40-60 mmHg, perfusion temperature under 12 degrees C) under the low CPB flow (1,000-1,500 ml/min), moderate systemic cooling (23-25 degrees C) and retro-grade cardioplegia. There were no strokes caused by this technique. This simplified technique of cold single SCP was simple and attractive method, provide satisfactory cerebral protection.

Aged↗

PubMed1991

[Evaluation of treatment of lung cancer combined with the disease which has needed a semi-emergency operation].

Six cases of lung cancer combined with the disease which has needed semi-emergency operation, two cases of unstable angina, two of ileus due to colon cancer, one of impending rupture of abdominal aortic aneurysm and one of purulent cholecystitis with cholelithiasis, were discussed. Mean age was 62.0 years (range, 36 to 73); four were male and two were female. Case 1 and 2 were admitted with anterior chest pain, Case 3 with lumbago and abdominal pain, Case 4 and 5 with an abnormal shadow on chest x-ray film and Case 6 with abdominal pain. Of the two with unstable angina, one was operated on with right upper lobectomy during the first months after aorto-coronary bypass. Of the two with colon cancer, one was operated on with right upper lobectomy during about 5 weeks after right hemi-colectomy. Case 3 with abdominal aortic aneurysm operated on with left upper lobectomy during 4 weeks after replacement of abdominal aorta. Case 4 with cholecystitis was operated on with left pneumonectomy during about 3 weeks after cholecystectomy. The postoperative course of 4 cases and the post-chemotherapy condition of 2 cases were uneventful.

Adenocarcinoma↗

PubMed1991

[The development of an antimony electrode with a built-in thermocouple and a temperature-compensated pH meter for the determination of intramyocardial pH during open-heart surgery].

Myocardial acidosis as reflected in pH measured by a glass (G) electrode during ischemic arrest may adversely affect postoperative cardiac function. However, (G) is slow in response and fragile. We report the development of an antimony electrode (Sb) and a pH meter based on our investigation and the results of their clinical application. As a biological material, CPD blood was chosen and subjected to a series of experiments determine its pH by (Sb) and (G). There was a small (within 0.1), but statistically significant difference in pH between (Sb) and (G). To simulate myocardial cooling during operation, CPD blood was cooled and its pH measured by (Sb) and (G). (Sb) showed significantly different behaviour from (G), i,e, the pH tended to fall with the falling temperature, whereas with (G) it tended to rise as had been previously known. The thermodynamic property of (Sb) was checked in appropriate buffer solutions by varying their temperatures. There was an almost linear correlation between EMF by (Sb) and the temperature of the buffer solutions (1 mV/1 degree C, or 0.017 pH/1 degree C). Accordingly, a pH meter incorporating an electronic circuit compensating for the temperature-depending EMF and a (Sb) with a built-in-thermocouple were constructed. Utilizing the new apparatus, CPD blood was again tested and it was proved that the new electrode and the pH meter worked in similar manner to (G). The new apparatus was applied to a series of measurement of intramyocardial pH during open-heart surgery and the results compared with that previously obtained by (G). There were no significant differences either between control pH or rate of its fall in the initial 10 minutes. following aortic cross-clamping and the administration of the cardioplegic solution. It is concluded that although (Sb) is not as accurate as (G), it is a reasonable alternative for the determination of the intramyocardial pH during open-heart surgery.

Cardiac Surgical Procedures↗

PubMed1991

[Successful surgical treatment of total anomalous pulmonary venous connection (supracardiac Ib type) showing an unusual shape of the pulmonary veins in an infant].

An experience of a 9-month-old infant with Darling's type Ib of total anomalous pulmonary venous connection is presented. In this case, the left pulmonary vein traveled horizontally behind the atrium, entered the right thoracic cavity and drained into the SVC together with the right lower, middle and upper pulmonary veins. The patient was treated with repair using Gersony-Malm's method and plasty of SVC because of the stenosis of the common pulmonary vein's entrance to the SVC. Her postoperative course was uneventful, and the result was satisfactory. To our knowledge, our case is the first successful correction not associated with other complex cardiac anomalies in the world.

Female↗