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Biomedical subjects

A Furuse

Publications and source records attributed to A Furuse.

At least 199 records · Page 11Linked to original sources
PubMed1986

Conduction disturbance and tachyarrhythmia in postoperative ventricular septal defect and tetralogy of Fallot.

The importance of conduction disturbances and tachyarrhythmias as the determining factors of the late results of postoperative patients with ventricular septal defect and tetralogy of Fallot was reconfirmed in this follow-up study. It was found, however, that the incidences of complete heart block, bilateral bundle-branch block, and ventricular tachyarrhythmia have decreased significantly since the establishment of cold cardioplegia. This has certainly contributed to the remarkable improvement in late follow-up results of postoperative patients with ventricular septal defect or tetralogy of Fallot.

Arrhythmias, Cardiac↗
PubMed1986

[Mitral valve prolapse: surgical approaches].

Surgical approaches currently used for the complication of mitral valve prolapse; i.e., for mitral regurgitation (MR), are either replacement or repair of the mitral valve. Recently, the latter has proved to be superior in view of the late results, and should be recommended thereafter. Repair of the mitral valve in cases without MR has been attempted in some Repair of the mitral valve in cases without MR has been attempted in some institutions. The results had benefit to relieve the prolapse, but symptoms and signs were not always abolished completely.

Adult↗
PubMed1985

Clinicopathological correlation of IgA nephropathy in children.

22 patients with IgA nephropathy aged 7-16 years, 15 of whom were found by mass urine screening of school children, were divided into three groups based on the degree of their proteinuria at admission: group A (n = 6) below 0.5 g/day of urine protein, group B (n = 7) between 0.6 and 3.0, and group C (n = 9) above 3.0 g/day of urine protein. The degree of proteinuria seemed to be related to the severity of pathological changes of the glomerular basement membrane; most severe in group C, moderate in group B, and minimal in group A. IgA deposits in the mesangial area were found in all groups of patients, but those in the capillary walls were most frequently found in group C. In addition to electron-dense deposits in the mesangial area, which was found in all groups of patients, the subendothelial and subepithelial deposits were the most remarkable changes found in group C. During the clinical observation period, which was between 2.0 and 7.1 years, no patient belonging to group A progressed to groups B or C. 4 cases in group C developed chronic renal failure, but none in the other groups did. The amount of urine protein might be used as a valuable parameter of the pathological damage of the glomerulus in children with IgA nephropathy.

Adolescent↗
PubMed1985

[Coronary sinus type atrial septal defect diagnosed by two-dimensional color Doppler echocardiography: a case report].

This is a case report of coronary sinus type atrial septal defect (ASD) diagnosed preoperatively by two-dimensional color Doppler echocardiography. A 22-year-old asymptomatic woman was admitted for preoperative cardiac evaluation. A cardiac murmur and cardiomegaly had been noted at a routine examination which included electrocardiography and chest radiography, and M-mode echocardiography suggested the presence of a secundum type ASD. Color Doppler echocardiography revealed a left to right atrial shunt flow through the coronary sinus ostium into the right atrium. By peripheral contrast echocardiography, a negative contrast echo from the coronary sinus ostium was observed within the right atrium and persistent left superior vena cava was excluded. At operation, a 2 X 3 cm defect was demonstrated at the interatrial septum in the vicinity of the coronary sinus ostium. This is the first reported case of a coronary sinus type ASD diagnosed preoperatively by color Doppler echocardiography.

Adult↗
PubMed1985

[Experimental study on intrahepatic gas tensions measured by mass spectrometry: effect on temporary occlusion of the afferent hepatic circulation].

In 24 mongrel dogs, a mass spectrometer was utilized to measure intrahepatic pO2 and pCO2 levels subjected to various degrees of inspired oxygen concentration, or interruption of the afferent hepatic circulation. The mean intrahepatic pO2 and pCO2 levels in dogs breathing 70% O2 were 46.0 +/- 13.3(SD) mmHg and 27.4 +/- 13.0mmHg, respectively. Progressive rise of the intrahepatic pO2 and pCO2 was observed with increase in the arterial pO2 and pCO2 when the hepatic circulation was kept constant. When the hepatic artery was interrupted, mean intrahepatic pO2 fell rapidly to 20% of the control value, and mean intrahepatic pCO2 rose to 200%. Rather wide dispersion of the values among the experimental animals during the hepatic artery interruption was speculated to reflect the variety of collateral hepatic arterial supply and various degrees of congestion of portal blood flow. Transient decrease in the mean intrahepatic pO2 was observed following interruption of the portal vein. Intrahepatic pO2 rapidly fell to zero and pCO2 increased in a lineal fashion when the total hepatic circulation was interrupted. The latter rose to 453% of the control value 30 minutes after interruption, then the rate of rise gradually decreased until a plateau was reached one hour later. This decrease in the rate of rise in intrahepatic pCO2 was regarded to reflect the reduction of energy production through the anerobic pathway due to irreversible hepatic parenchymal degeneration. It is suggested that the measurement of intrahepatic gas tensions under various conditions by a mass spectrometer technique is useful for evaluating changes of intrahepatic microcirculation and dynamic aspects of anerobic metabolism of the liver.

Animals↗
PubMed1984

Clinical evaluation of the microporous hollow fiber oxygenator.

This report concerns a clinical evaluation for a newly devised hollow fiber oxygenator, Capiox II. It functions on a one-pump system, and is simple to set up and operate. This equipment was used for 118 patients undergoing cardiac surgery at Tokyo University Hospital from February 1982 through February 1983. The gas transfer capacity proved to be satisfactory. The employment of an air-oxygen blender prevented overoxygenation, and reasonable levels of PaO2 and PaCO2 were demonstrated with a FiO2 0.7, V/Q ratio 0.7 at normothermia. The destruction of platelets was much less with the use of this oxygenator, as compared to findings with the BOS-10. Hemolysis by Capiox II appeared to be lower than that by BOS-10, but the difference was not statistically significant. Differences were distinct in the amount of microbubbles; strikingly, no bubble was evidenced in Capiox II by the ultrasound bubble detector, during general procedures. We conclude that Capiox II is of excellent clinical value, and should be used especially for infants as well as adult patients with possible long perfusions. The merits and demerits of this equipment are given attention.

Adolescent↗