BACKGROUND: It is known that QT dispersion represents asynchronous repolarization of ventricle which is related to ventricular fibrillation. The incidence of ventricular arrhythmia is increased after acute myocardial infarction. So this study compared QT dispersion and other repolarization indexes for detection of asynchronous repolarization in acute myocardial infarction. We also investigated which portion of repolarization is the key portion of the asynchrony. METHODS: In 37 acute myocardial infarction patients and 38 angina patients dispersion of QT, JT, JTpeak and QTpeak were measured. We also measured maximum adjacent dispersion of same parameters in precordial leads. In 20 survived patients and 17 dead patients after acute myocardial infarction were also compared. We also investigated correlation of PVC's on Holter monitoring with these repolarization parameters. RESULTS: 1) All ventricular repolarization indexes(QT, QTc, JT, JTpeak, QT peak and TpeakTend dispersion) were significantly increased in acute myocardial infarction group than compared with those of angina group(p<0.05). 2) Maximal precordial dispersion(QT, QTc, JT, JTpeak and QTpeak) were also significantly increased in acute myocardial infarction group than angina group(p<0.05). 3) Dead patient group after myocardial infarction showed significantly increased QTc and TpeskTend dispersion compared with those of survived patient group(p<0.05). 4) Multivariate linear correlation showed that TpeakTend dispersion and JT dispersion was correlated with QT dispersion. CONCLUSIONS: There were asynchronous myocardial repolarization changes in acute myocardial infarction. Our study demonstrated that T wave change was major determinant of dispersion of myocardial repolarization.
Arrhythmias, Cardiac ; Electrocardiography, Ambulatory ; Humans ; Incidence ; Myocardial Infarction* ; Ventricular Fibrillation

No abstract available.
DNA* ; Lung Neoplasms* ; Lung* ; Ploidies*

No abstract available.
Causality* ; Humans ; Infant, Newborn* ; Pneumothorax*

No abstract available.
Animals* ; Korea* ; Yersinia pseudotuberculosis* ; Yersinia*

Authors investigated the possible role of intravascular hypercoagulable states on the etiology of Kegg-Clave-Perthes diesease. Forty-five patients with Legg-Clave-Perthes disease(31 avascular stages and 14 reossification stages) and twenty-two normal control patients were subjected to study for evaluation of coagulation and fibrinolysis system by means of the tests which included antiphospholipid antibody(APA), Protein C, Protein S and antithrombin- III (AT- III) for evaluation of coagulation system, and tissue type PIasminogen activator(tPA), Plasminogen activator inhibitor(PAI), D-dimer for fibrinolytic system. APA increased significantly in Legg-Clave-Perthes patients(p=0.016) as compared with control group, while Protein C(p=0.040) and Protein S(P=0.0001) decreased significantly in Legg-Clave- Perthes disease. AT- III increased in Legg-Clave-Perthes disease(p=0.0000). In contrast, there were no statistically significant differences in PAI, tPA, D-dimer between the Legg-Clave-Perthes disease and control group. There were no differences in all parameters between the avascular stage and reossification stage in patients with Legg-Clave-Perthes disease, Suggestive of possible inherent effect in coagulation system(hypercoagulable states) which does not change with time. Based on the above findings authors presumed that hypercoagulable state may contribute to the development of Legg-Calve-Perthes disease. However, to elucidate the etiology of Legg-Calve-Perthes disease, further extensive investigation should be followed, which include the familial tendency of hypercoagulable state, relationship with other multifactorial causes such as alcohol and steroids, and confirmation of intravascular thrombosis or decreased blood perfusion in the femoral head. Also, the significance of abnormally elevated AT-III on the disease should be answered.
Fibrinolysis ; Head ; Humans ; Legg-Calve-Perthes Disease ; Perfusion ; Plasminogen Activators ; Protein C ; Protein S ; Steroids ; Thrombosis

Isolated angiitis of the central nervous system is a rare clinicopathologic entity characterized by vasculitis restricted to the vessels of central nervous system without other apparent systemic vasculitis. It manifests headache, higher cortical dysfunction. focal neurologic dysfunction and cranial nerve palsies. We experienced a case of isolated angiitis of the central nervous system in 6 year-old girl who was admitted to out unit because of headache, hemiparesis and altered consciousness. The laboratory test for blood, urine, and cerebrospinal fluid are all within normal ranges. There was no evidence of systemic vasculitis. The contrast enhanced brain CT scan showed low densities along the left cerebellar hemisphere and posterior aspect of temporal lobe without enhancement, and left lateral internal carotid angiogram showed poorly contrast filling along the territory of left posterior cerebral artery due to narrowing or ischemic changes of the vessels. Axial T2WI (TR/TE, 2190/80) of magnetic resonance imaging showed multiple scattered high signal intensities at left pons with cerebellar hemisphere and diffuse high signal intensity along the left occipital lobe with enlarged surrounding gyral patterns, and axial T1WI(TR/TE, 665/25) showed intense gyral pattern contrast enhancement along the left occipital lobe. Steroid was tried with apparent benefit. We report a case of isolated angiitis of central nervous system with review of literature.
Brain ; Central Nervous System ; Cerebrospinal Fluid ; Child ; Consciousness ; Cranial Nerve Diseases ; Female ; Headache ; Humans ; Magnetic Resonance Imaging ; Nervous System* ; Neurologic Manifestations ; Occipital Lobe ; Paresis ; Pons ; Posterior Cerebral Artery ; Reference Values ; Systemic Vasculitis ; Temporal Lobe ; Tomography, X-Ray Computed ; Vasculitis*

Poly-D,L-lactic acid (PDLLA) is widely used in facial rejuvenation as a collagen stimulator, with a lower risk of granuloma formation compared to poly-L-lactic acid (PLLA). However, granulomas may still occur. In this case, a 58-year-old woman developed firm, non-tender, bilateral infraorbital granulomas 2 months after her third PDLLA injection for infraorbital hollowing. The lesions were unresponsive to intralesional trichloroacetic acid (TCA) and intense pulsed light therapy, necessitating surgical removal. Histopathological analysis confirmed foreign-body granulomas caused by the PDLLA filler. This case highlights the need for caution when injecting PDLLA into thin-skinned areas like the infraorbital region, where granulomas can be more visible due to limited tissue volume. Although PDLLA fillers are generally safe, granuloma formation remains a potential complication. Early diagnosis and treatment with non-surgical methods, such as intralesional TCA, should be prioritized. If these methods fail, surgical excision, aimed at preserving as much normal tissue as possible, may be necessary for optimal outcomes.

Poly-D,L-lactic acid (PDLLA) is widely used in facial rejuvenation as a collagen stimulator, with a lower risk of granuloma formation compared to poly-L-lactic acid (PLLA). However, granulomas may still occur. In this case, a 58-year-old woman developed firm, non-tender, bilateral infraorbital granulomas 2 months after her third PDLLA injection for infraorbital hollowing. The lesions were unresponsive to intralesional trichloroacetic acid (TCA) and intense pulsed light therapy, necessitating surgical removal. Histopathological analysis confirmed foreign-body granulomas caused by the PDLLA filler. This case highlights the need for caution when injecting PDLLA into thin-skinned areas like the infraorbital region, where granulomas can be more visible due to limited tissue volume. Although PDLLA fillers are generally safe, granuloma formation remains a potential complication. Early diagnosis and treatment with non-surgical methods, such as intralesional TCA, should be prioritized. If these methods fail, surgical excision, aimed at preserving as much normal tissue as possible, may be necessary for optimal outcomes.

Poly-D,L-lactic acid (PDLLA) is widely used in facial rejuvenation as a collagen stimulator, with a lower risk of granuloma formation compared to poly-L-lactic acid (PLLA). However, granulomas may still occur. In this case, a 58-year-old woman developed firm, non-tender, bilateral infraorbital granulomas 2 months after her third PDLLA injection for infraorbital hollowing. The lesions were unresponsive to intralesional trichloroacetic acid (TCA) and intense pulsed light therapy, necessitating surgical removal. Histopathological analysis confirmed foreign-body granulomas caused by the PDLLA filler. This case highlights the need for caution when injecting PDLLA into thin-skinned areas like the infraorbital region, where granulomas can be more visible due to limited tissue volume. Although PDLLA fillers are generally safe, granuloma formation remains a potential complication. Early diagnosis and treatment with non-surgical methods, such as intralesional TCA, should be prioritized. If these methods fail, surgical excision, aimed at preserving as much normal tissue as possible, may be necessary for optimal outcomes.

Poly-D,L-lactic acid (PDLLA) is widely used in facial rejuvenation as a collagen stimulator, with a lower risk of granuloma formation compared to poly-L-lactic acid (PLLA). However, granulomas may still occur. In this case, a 58-year-old woman developed firm, non-tender, bilateral infraorbital granulomas 2 months after her third PDLLA injection for infraorbital hollowing. The lesions were unresponsive to intralesional trichloroacetic acid (TCA) and intense pulsed light therapy, necessitating surgical removal. Histopathological analysis confirmed foreign-body granulomas caused by the PDLLA filler. This case highlights the need for caution when injecting PDLLA into thin-skinned areas like the infraorbital region, where granulomas can be more visible due to limited tissue volume. Although PDLLA fillers are generally safe, granuloma formation remains a potential complication. Early diagnosis and treatment with non-surgical methods, such as intralesional TCA, should be prioritized. If these methods fail, surgical excision, aimed at preserving as much normal tissue as possible, may be necessary for optimal outcomes.