No abstract available.
Hepatitis* ; Humans

Osteoid osteoma is a distinctive benign lesion characterized by a less then 2 cm, pea-like mass of abnormal bone (nidus). The common sites of osteoid osteoma are femur, tibia, humerus, spine and talus. Mastoid tip, clavicle, acetabulum, coccyx, rib, hamate, scapula and scaphoid are rare sites of osteoid osteoma. Osteoid osteoma of the patella is also very rare and on review of literatures we could find only one reported case which was treated by surgical excision. We also experienced one case of osteoid osteoma located at the patella, so we report this case with review of literatures.
Acetabulum ; Clavicle ; Coccyx ; Femur ; Humerus ; Mastoid ; Osteoma, Osteoid* ; Patella* ; Ribs ; Scapula ; Spine ; Talus ; Tibia

This study aimed to investigate the existence of GABA receptor and the mechanisms of action of GABA and diazepam of the trachealis muscle isolated from dog. Horizontal muscle strips of 2mm×15mm were prepared from canine trachea, and isometric myography in isolated muscle chamber bubbled with 95/5%-O₂/CO₂ at 36℃, at the pH of 7.4 was performed. Muscle strips contracted responding to the electrical field stimulation (ESP) by 2~20 Hz, 20 msec, monophasic square wave of 60 VDC. GABA and diazepam suppressed the EFS-induced contractions to the similar extent, significantly. (p<0.05). Bicuculline, a GABA(A) receptor antagonist blocked both GABA- and diazepam-inhibitions; but DAVA, a GABA(B) receptor antagoinst did not affect either of them. These results suggest than in the canine trachealis muscle, there may be only GABA(A) receptor, and GABA and diazepam inhibit the contractility via GABA(A) receptor.
Animals ; Bicuculline ; Diazepam ; Dogs ; gamma-Aminobutyric Acid* ; Hydrogen-Ion Concentration ; Myography ; Receptors, GABA ; Receptors, GABA-A ; Trachea

No abstract available.

The occurrence of atrial fibillation during an electrophysiologic study or catheter ablation in patients with accessory pathways is a common problem and sometimes complicates the localization and ablation procedure of accessory pathways. In patients with sustained atrial fibrillation, it is often time-consuming to terminate atrial fibrillation by drugs or electrical cardioversion. We performed successful radiofrequency catheter ablation in a patient with right-sided accessory pathway during atrial fibrillation requiring repeated electrical cardioversion. The target site was determined by activation mapping and morphology of unipolar electrogram at a site of early ventricular activation.
Atrial Fibrillation* ; Catheter Ablation ; Electric Countershock ; Humans

The long QT syndrome is believed to result from abnormalities of cardiac sympathetic innervation and of myocardial repolarization. The therapeutic modalities for patients with ventricular arrhythmias due to the long QT syndrome include beta blocker, cardiac sympathetic denervation, pacemaker and ICD implantation. Recently, we underwent transvenous ICD implantation in a patient with this syndrome who had recurrent syncopal episodes due to rapid polymorphic ventricular tachycardia and strong family history of sudden death.
Arrhythmias, Cardiac ; Death, Sudden ; Humans ; Long QT Syndrome* ; Sympathectomy ; Syncope ; Tachycardia, Ventricular

The long QT syndrome is believed to result from abnormalities of cardiac sympathetic innervation and of myocardial repolarization. The therapeutic modalities for patients with ventricular arrhythmias due to the long QT syndrome include beta blocker, cardiac sympathetic denervation, pacemaker and ICD implantation. Recently, we underwent transvenous ICD implantation in a patient with this syndrome who had recurrent syncopal episodes due to rapid polymorphic ventricular tachycardia and strong family history of sudden death.
Arrhythmias, Cardiac ; Death, Sudden ; Humans ; Long QT Syndrome* ; Sympathectomy ; Syncope ; Tachycardia, Ventricular

Fibro-osseous pseudotumor is an extremely rare benign lesion which is fast-growing and painful. It is often misdiagnosed as a malignancy, but it is a noninvasive entity and can be cured by simple resection. We report a case of fibro-osseous pseudotumor of the distal phalanx of great toe in 20-year-old female patient who present with painful mass.
Female ; Humans ; Toes ; Young Adult

This study was aimed at investigation of the stimulatory innervations on the rat urinary bladder. Detrusor muscle strips of 15 mm long were suspended in isolated muscle chambers containing 1 ml of PSS maintained at 37℃ and aerated with 95% O²/5% Co². Isometric myography was performed, and the results were as followings: Muscle strips showed “on-contraction” by electric field stimulation (EFS) frequency-dependently. The EFS-induced contraction was not affected by hexamethonium, a ganglion blocker, but abolished by tetrodotoxin, a nerve conduction blocker. Physostigmine, a cholinesterase inhibitor enhanced the EFS-induced contraction which was inhibited by hemicholinium, an inhibitor of choline uptake at the cholinergic nerve ending. Such an EFS-induced contraction was antagonized by atropine only partially, and the atropine-resistant portion was completely abolished by the desensitization of purinergic receptors by prolonged incubating of the strips in the presence of high concentration of ATP. Bethanechol, a cholinergic agonist, elicited concentration-dependent contraction. Adenosine triphosphate (ATP), a purinergic agonist, induced a weak but concentration-dependent contraction of short duration. Bethanechol-induced contraction was not affected by ATP-desensitization, and ATP-induced contraction was not affected by tetrodotoxin. These results suggest that there are at least two main stimulatory components of innervations in the detrusor muscle, cholinergic muscarinic and purinergic; and those receptors are independent each other.
Adenosine Triphosphate ; Animals ; Atropine ; Bethanechol ; Choline ; Cholinergic Agonists ; Cholinesterases ; Ganglion Cysts ; Hemicholinium 3 ; Hexamethonium ; Myography ; Nerve Endings ; Neural Conduction ; Physostigmine ; Rats* ; Receptors, Purinergic ; Tetrodotoxin ; Urinary Bladder*

The operative treatment of intraarticular calcaneal fractures has three principal aims; restoration of the height and width of the calcaneus, reconstruction of the subtalar and calcaneocuboid joint surfaces, and stable osteosynthesis. The purpose of this study is to demonstrate the effectiveness of the open reduction and internal fixation by the extended lateral approach for the treatment of the intraarticular calcaneal fractures. Twenty-one calcaneal fractures of 20 patients were treated by open reduction and internal fixation using an extended lateral approach from April, 1993 to March, 1994. The autogenous iliac bone graft was done in all patients. These patients were evaluated from 12 to 24 months (average 15.2 months) after surgery. The following results were obtained; 1. Seventecn cases (80%) out of 21 were estimated as good or excellent result. 2. Preoperative Bohler's angles, Gissane's angles and inclination angles were observed as average -0.5degrees, 101degrees and 38degrees respectively, and these were improved as average 23.3degrees, 117degrees and 54degrees, postoperatively. 3. There were two cases of skin necrosis as complication. In conclusion, the extended lateral approach is one of the good methods for the treatment of intraarticular calcaneal fractures. We think that accurate reduction of the posterior facet, acceptable recovery of Bohler's angle and early postoperative mobilization are the most important things for the best result of the intraarticular calcaneal fracture surgery.
Calcaneus ; Humans ; Intra-Articular Fractures ; Joints ; Necrosis ; Skin ; Transplants