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Biomedical subjects

T Sueda

Publications and source records attributed to T Sueda.

At least 199 records · Page 11Linked to original sources
PubMed1988

[Surgical reconstruction for subclavian arterial obstruction at its origin].

The authors, having experienced 17 cases of subclavian arterial obstruction at its origin in Montpellier, France and in Japan, performed direct anastomosis between the divided end of the proximal subclavian artery and the ipsilateral common carotid artery (transposition technique) in 12 cases. Our series of 17 patients ranging in age from 30 to 73 years who were evaluated for variety of symptoms: 8 had subclavian steal syndrome; 12 had claudication of upper extremity; 1 had visual disturbance; 3 had vertigo; and 1 had ear throbbing. Twelve patients were treated surgically with division of the proximal subclavian artery and its anastomosis to the common carotid artery by means of supraclavicular cervicotomy. One was treated with carotid subclavian bypass grafting, and 4 were placed aorto-carotid-subclavian bypass grafting with median sternotomy because of the proximal occlusive lesions at the origins of common carotid and subclavian artery due to aortitis syndrome. All the patients were relieved from the symptoms which had been existed in pre-operative stage. The transposition technique is simple, effective and few complications.

Adult↗
PubMed1987

Transvenous mitral commissurotomy examined with transesophageal echocardiography.

Transvenous mitral commissurotomy (TMC) was conducted with transesophageal echocardiography (TEE) in two patients with mitral stenosis. It was possible to see clearly not only the intracardiac structures to be examined by TMC, such as the right and left atria, interatrial septum, and mitral valve, but also the instruments used in TMC, such as the catheter, guidewire, and balloon. It was possible to determine the positional relation between the intracardiac structures and instruments. We could observe all procedures other than Brockenbrough's procedure by both TEE and fluoroscopy at the same time. Although safety and reliability cannot be confirmed from just the two present cases, TEE appears to be applicable to TMC.

Aged↗
PubMed1986

Electrophysiological effects of diphenylhydantoin in patients with sinus node dysfunction.

The electrophysiological effects of intravenous administration of diphenylhydantoin (DPH) (5 mg/Kg, maximum 250 mg) were studied in 20 patients with sinus node dysfunction (SND). DPH shortened spontaneous cycle length (SCL) in 3 patients and lengthened it in 3. Maximum corrected sinus node recovery time (max CSRT) was prolonged in 7 patients and shortened in 3. Estimated sinoatrial conduction time was prolonged in 3 patients and shortened in 2 of 10 patients in whom this measurement was possible. However, these changes were not statistically significant. Neither were there any significant changes in PA, AH and HV intervals nor refractory periods of the atrium, the AV node and the ventricle. DPH prolonged SCL and/or max CSRT in 9 of 20 patients with SND, and it was suggested that DPH has depressant effects on the sinus node in some patients with SND. Thus, this drug should be used with caution in the treatment of ventricular arrhythmias accompanied by sinus node dysfunction.

Adult↗
PubMed1985

Effects of intracoronary thrombolysis therapy on left ventricular function after acute myocardial infarction.

To treat the acute phase of myocardial infarction, nitroglycerin and urokinase were injected directly into the infarct-related coronary artery. Left ventricular ejection fraction and regional ejection changes were significantly preserved in the chronic phase, compared with conventional therapy in patients with obstruction at the same site. Comparing left ventricular function in the acute and chronic phases, left ventricular ejection fraction, regional ejection changes and left ventricular end-diastolic pressure were significantly improved in the chronic phase in patients with reperfusion within 6 hours. On the other hand, in patients who had no reperfusion in either the acute or chronic phase, left ventricular ejection fraction deteriorated in the chronic phase. Even in patients with reperfusion in the acute phase, reocclusion later meant a worse left ventricular ejection fraction in the chronic phase. These results suggest that intracoronary thrombolysis with urokinase within 6 hours gives a good chance of recovery from myocardial damage in patients with myocardial infarction.

Angioplasty, Balloon↗