BACKGROUND: Radiofrequency catheter ablation was introduced the curative method of supraventricular tachycardia in patients with accessory pathways. The success of catheter ablation depends on the accurate localization of accessory pathway and the destruction of accessory pathways. METHOD: We analyzed the local electrograms in 35 patients to be underwent the successful catheter ablation and measured the catheter stability, A/V ratio, AV interval, Accessory pathway potential, and the interval from the onset of RF energy to loss of accessory pathway from local electrograms at the successful ablation sites. RESULTS: The ratio of A wave and V wave range from 0.06 to 6.33 and the mean of A/V ratio is 0.62. The shortest AoVo interval is 20 msec and the longest AoVo interval is 120 msec and the mean of AoVo interval is 58.23 msec. The shortest ApVp interval is 20 msec and the longest ApVp interval is 100 msec and the mean of this interval is 51.88 msec. The incidence of accessory pathway potential among 35 successful ablation sites in 25%. The mean of time from RF energy to loss of accessory pathway is 4.48 sec. CONCLUSION: We concluded that the finding of local electrogram during catheter ablation is very important for shortening of procedure time and the successful procedure.
Catheter Ablation* ; Catheters ; Electrophysiologic Techniques, Cardiac* ; Humans ; Incidence ; Tachycardia, Supraventricular

No abstract available.
Humans* ; Joints*

No abstract available.
Humans ; Mucocele*

No abstract available.
Humans* ; Membranes*

BACKGROUND: In vitro epidermal keratinocytes(EKs) culture systems are widely used in studying skin biology and differentiation. Recently a monolayer culture method of nail matrix cells(NMCs) has been developed. OBJECTIVE: This study was designed to establish a method of culture of NMCs and compared its characteristics with those of EKs. METHODS: Human NMCs were isolated and cultured in a defined medium. Phase contrast microscopic examination, growth rate and ketatin expression were evaluated. RESULTS: In in vitro monolayer culture, NMCs had a similar growth pattern and morphological features as EKs. The synthesis of hard keratins was detected. CONCLUSION: These observations suggest that the NMCs culture model may be useful for the study of nail properties and the effects of drugs.
Biology ; Humans ; In Vitro Techniques ; Methods ; Skin

No abstract available.
Forehead* ; Orbit*

No abstract available.
Alcoholics* ; Humans

No abstract available.

No abstract available.
Tomography, X-Ray Computed*

Although several kinds of instrumentation systems are available for the transpedicular screw fixation in the treatment of spondylolisthesis, the clinical results and the difference between them remdins unclear. In order to study the feasibility of Zielke instrumentation system for that purpose, the author analysed the clinical results of 73 patients with mild or moderate degree of spondylolisthesis who were instrumented with the systems and followed up 25 months in average(Min. 12Ms). The results between the groups with different rod thickness in the system, 3.2mm(20 patients), 4mm(33 patients) and 5mm(20 patients), were compared to study the most appropriate thickness. Reduction of the deformity were done by aid of temporarilly applied Harrington system in 3.2mm group. Inlayed reduction potential coming from the jointing mechanism was utilized in the cases with less than 30% of slippage in 4 and 5mm group. Percentage of slippage was changed from 20% preoperatively, to 4% postoperatively and 6% at the end of follow up. The methods of fusion after reduction and fixation were anterior in 25 and posterolateral in 48. Bony fusion was achieved in all but one with pathological spondylolisthesis. Rod failures were observed in two of 3.2mm and one of 4mm group, and loosening of the joint were developed in three of 5mm group. Clinically, 93% of the patient showed excellent and good results at the end of follow up. From the results, we concluded that the instrumentation is a efficient method of treatment with several advantages in the reduction capacity and the stability of fixation. However, this system has several points in its mechanics that needs to be improved.
Congenital Abnormalities ; Follow-Up Studies ; Humans ; Joints ; Mechanics ; Methods ; Spondylolisthesis