Biomedical subjects

Liang-Yu Lin

Publications and source records attributed to Liang-Yu Lin.

3 recordsLinked to original sources

PubMed2006

Measuring heart rate variability with wavelet thresholds and energy components in healthy subjects and patients with congestive heart failure.

BACKGROUND: Analysis of wavelet thresholds and energy components can be used to differentiate patients with congestive heart failure (CHF) from healthy subjects and to demonstrate the improvement of heart rate variability after treatment with beta-blockers in the patient group. METHODS: Nine patients with CHF without concurrent beta-blocker therapy and 15 healthy volunteers were recruited and received 24-hour Holter recording. Wavelet thresholds and energy components were calculated. The patients with CHF were then treated with atenolol for 3 months. Another Holter recording was repeated and associated wavelet parameters were estimated. RESULTS: Wavelet thresholds were statistically higher in normal subjects than those derived from patients with CHF (62.40 +/- 20.65 vs. 16.90 +/- 9.72, p < 0.001). The difference was still significant after control of heart rate and the total number of heart beats (74.85 +/- 22.68 vs. 32.51 +/- 18.73, p < 0.001). The energy component of HRV in the finest wavelet domain was also significantly higher in the normal subjects (243.01 +/- 237.69 x 10(-6) vs. 40.65 +/- 39.65 x 10(-6), p = 0.001). These two measures increased after treatment with beta-blockers in the patients with CHF, but not to the extent of those of normal subjects. CONCLUSION: Analysis of wavelet thresholds and energy components has provided robust and accurate measurements for background HRV.

Adrenergic beta-Antagonists↗

PubMed2005

Diffuse soft tissue emphysema in anorexia nervosa: a case report.

OBJECTIVE: Anorexia nervosa (AN) is an eating disorder that occurs mainly among young females and its prevalence has increased in recent decades. METHODS: We reported a patient with AN with spontaneous diffuse soft tissue emphysema and bicytopenia, both of which are very rare complications of AN. Our patient, a 20-year-old woman, had lost 41.6% of her previous body weight within 9 months. Her body mass index was 10.8 and amenorrhea had persisted for 5 months. RESULTS: After admission, she was diagnosed with AN-restrictive subtype. She was noted to have crunching sounds in the neck and upper chest wall during hospitalization. A chest X-ray and chest computed tomography scan both revealed diffuse soft tissue emphysema including subcutaneous emphysema, pneumomediastinum, and pneumoretroperitoneum. DISCUSSION: Diffuse soft tissue emphysema improved gradually and completely resolved on the 21st day of hospitalization. This condition seems to be benign and only a short period of hospitalization is required.

Adult↗

PubMed2005

Chronic myeloid leukemia after treatment with 131 for thyroid carcinoma.

A 27-year-old male developed Philadelphia chromosome-positive chronic myeloid leukemia (CML) 13 years after a first dose of radioiodine (131I) therapy for papillary thyroid carcinoma. He had received a cumulative 131I dose of 670 mCi, in 8 divided doses over 8 years, up to April 1998, for ablation of 131I avid tissues over the anterior neck region. The leukemogenic potential of radioactive iodine has been pointed out by many authors, but most reported cases have been acute leukemias. A literature review disclosed only 9 cases similar to ours. At present, there is no evidence to prove whether the development of CML after thyroid carcinoma represents a treatment-induced complication, a coincidence, or an increased susceptibility to secondary malignancies due to the malignant process itself.

Child↗