Search PubMed⌕ Search

Biomedical subjects

T Iwa

Publications and source records attributed to T Iwa.

At least 271 records · Page 15Linked to original sources
PubMed1980

Simultaneous repair of anomalous origin of the left coronary artery from the pulmonary artery and mitral regurgitation.

A 20-month-old boy with anomalous origin of the left coronary artery from the pulmonary artery was successfully treated by combining aortic implantation of the left coronary artery and simultaneous mitral valve replacement. We describe our operative technique and emphasize that in the definitive treatment of this anomaly, it is advisable to not only correct the malformation but also repair the mitral valve damage caused by secondary changes due to infarction.

Angiocardiography↗
PubMed1980

Simultaneous surgery for Wolff-Parkinson-White syndrome combined with Ebstein's anomaly. Interruption of multiple accessory conduction pathways.

We detail the simultaneous surgical treatment of Ebstein's anomaly combined with Wolff-Parkinson-White syndrome in a patient who presented with multiple accessory conduction pathways. The extensively deformed tricuspid valve was replaced by a Hancock xenograft and the atrialized ventricle was plicated. Surgery was performed under the beating heart condition and this made possible electrical mapping which facilitated the localization of both accessory pathways. By the method presented here, all existing accessory pathways can be pinpointed during open heart surgery and the time of their interruption can be established. Two and a half years after surgery, chest X-ray revealed marked reduction of the cardiothoracic ratio and the patient experienced no postoperative tachycardia episodes.

Adolescent↗
PubMed1980

Double pacemaker implantation.

A demand-type pacemaker and an inductive radiofrequency atrial pacemaker were implanted in four patients presenting with sick sinus syndrome, bradycardia-tachycardia syndrome, Wolff-Parkinson-White syndrome, atrial flutter, and paroxysmal atrial tachycardia, and in one patient having ventricular tachycardia with ectopic ventricular beats. Our follow-up of these patients showed that double implantation is feasible and effective in controlling different types of arrhythmia occurring in the same patient.

Aged↗
PubMed1980

Localization and interruption of accessory conduction pathway in the Wolff-Parkinson-White syndrome.

We operated upon 36 patients with Wolff-Parkinson-White (WPW) syndrome between 1969 and July, 1979. The relationship between the electrocardiogram (ECG), particularly the delta wave, and localization of the accessory conduction pathway (ACP) was analyzed, and the value of preoperative examinations such as vectorcardiography, echocardiography, body surface mapping, intracavitary potential study, and cardiac pacing were demonstrated. Epicardial mapping was indispensable as an intraoperative study and represented the most effective method for localizing the ACP. In some cases, endocarial potential study was found to be efficacious. Detachment of the atrium from the ventricle by an incision along the anulus at the area of earliest pre-excitation, resulted in complete correction in 26 of 28 patients operated upon between 1973 and July, 1979. In five patients multiple ACPs was corrected, although four of them required a second operation. The surgical indications in the WPW syndrome should be expanded in view of the high success rate and the safety of the operation.

Adolescent↗
PubMed1979

Unusual combination of pulmonary sequestration and funnel chest.

Cases of pulmonary sequestration and cases of funnel chest are frequently accompanied by other anomalies, although the combination of pulmonary sequestration and funnel chest is rare. In this study, we report ten cases of pulmonary sequestration, nine of which had the combination of pulmonary sequestration and other anomalies; four evidenced the unusual combination of pulmonary sequestration and funnel chest.

Abnormalities, Multiple↗