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Biomedical subjects

T O Cheng

Publications and source records attributed to T O Cheng.

At least 325 records · Page 18Linked to original sources
PubMed1996

Paradoxic embolism.

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Echocardiography, Transesophageal↗
PubMed1996

Four-dimensional echocardiography: methods and clinical application.

4DE (i.e., dynamic three-dimensional) echocardiography is a new developing technique in recent years. In our study, a three-dimensional echo scan computer system was used to acquire and store the two-dimensional information, then to reconstruct the stereoscopic image of the heart according to its space-time continuum. It can yield a better approach, which can help identify the various structures of the heart and great arteries and facilitate understanding of spatial relations and motion. In addition, it can display physiologic information such as the direction, course, size, and shape of the blood flow. We have examined 138 patients by both transthoracic and transesophageal approaches. Our preliminary experience shows that 4DE is of great value in diagnosing congenital heart disease and valvular disease.

Adolescent↗
PubMed1996

Successful treatment by percutaneous balloon angioplasty of Budd-Chiari syndrome caused by membranous obstruction of inferior vena cava: 8-year follow-up study.

OBJECTIVES: This study sought to report the long-term result (up to 8 years) of percutaneous transluminal balloon angioplasty (PTBA) for Budd-Chiari syndrome (BCS) caused by membranous obstruction of the inferior vena cava (MOVC). BACKGROUND: We previously reported on this nonoperative form of therapy in a smaller series of patients and found the short-term results to be excellent. METHODS: We studied the long-term results of PTBA in the treatment of BCS caused by MOVC in 42 patients who underwent PTBA with the Inoue balloon catheter between June 1988 and February 1996. There were 28 men and 14 women with a mean age of 35.6 years (range 16 to 56). MOVC was incomplete in 27 patients and complete in 15. PTBA was successful in 38 patients (91%). The longest follow-up period was 8 years. RESULTS: All 38 patients who successfully underwent PTBA showed marked symptomatic improvement. Immediately after PTBA, the diameter of the inferior vena cava at the MOVC increased from 1.7 +/- 2 to 19.9 +/- 3.5 mm (p < 0.0001), the caval pressure below the MOVC decreased from 23.6 +/- 8.5 to 12.0 +/- 6.5 mm Hg (p < 0.0001), and the enlarged liver size decreased from 6.5 +/- 1.5 to 2.0 +/- 1.5 cm below the right costal margin at the midclavicular line (p < 0.0001). Over a follow-up period of up to 8 years (7 to 8 years in 4 patients, 5 to 7 years in 12, 3 to 5 years in 11, 2 to 3 years in 6 and < 2 years in 9), MOVC returned in only 1 patient. This patient, our first, required a second PTBA 3 years later and a third 4.25 years after the second PTBA, in combination with stent placement for recurrence of stenosis. CONCLUSIONS: PTBA with the Inoue balloon catheter is an effective, safe and long-lasting alternative to surgical treatment of patients with BCS due to MOVC.

Adolescent↗
PubMed1996

Anorexia nervosa.

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Anorexia Nervosa↗