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Fukamizu S.,Tokyo Metropolitan Hiroo Hospital | Sakurada H.,Tokyo Metropolitan Health and Medical Treatment Corporation | Hayashi T.,Tokyo Metropolitan Hiroo Hospital | Hojo R.,Tokyo Metropolitan Hiroo Hospital | And 6 more authors.
Journal of Cardiovascular Electrophysiology | Year: 2013

Introduction: Macroreentrant atrial tachycardia (MRAT) has been described most frequently in patients with prior cardiac surgery. Left atrial tachycardia and flutter are common in patients who undergo atrial fibrillation ablation; however, few reports describe left atrial MRAT involving the regions of spontaneous scarring. Here, we describe left atrial MRAT in patients without prior cardiac surgery or catheter ablation (CA) and discuss the clinical and electrophysiological characteristics of tachycardia and outcome of CA. Methods and Results: An electrophysiological study and CA were performed in 6 patients (3 men; age 76 ± 6 years) with MRAT originating from the left atrial anterior wall (LAAW). No patient had a history of cardiac surgery or CA in the left atrium. Spontaneous scars (areas with bipolar voltage ≤ 0.05 mV) were observed in all patients. The activation map showed a figure-eight circuit with loops around the mitral annulus (4 counterclockwise and 2 clockwise) and a low-voltage area with LAAW scarring. The mean tachycardia cycle length was 303 ± 49 milliseconds. The conduction velocity was significantly slower in the isthmus between the scar in the LAAW and the mitral annulus than in the lateral mitral annulus (0.17 ± 0.05 m/s vs 0.94 ± 0.35 m/s; P = 0.003). Successful ablation of the isthmus caused interruption of the tachycardia and rendered it noninducible in all patients. Conclusion: Spontaneous LAAW scarring is an unusual cause of MRAT, showing activation patterns with a figure-eight configuration. Radiofrequency CA is a feasible and effective treatment in such cases. © 2012 Wiley Periodicals, Inc. Source

OBJECTIVES & SUBJECTS: The change in IGRA (interferon-gamma release assay, with QuantiFERON-TB Gold, QFT) responses was followed up for one year in a group of contacts of healthcare workers who had been exposed to tuberculosis (TB) infection for a relatively short period in a hospital. The observation was made of a total of 59 close contacts of the index case, where 16 showed positive QFT-conversion and 7 showed the intermediate response ranging 0.1 to 0.35 IU/mL. Three of the conversion cases developed active TB. 67% of the QFT conversions occurred within 2 months of exposure and the others between 2 to 9 months. Those having converted later than 2 months after the exposure showed generally weaker QFT responses than the earlier converters. In response to the treatment to converters (either to latent TB infection or to active TB), 80% of the cases reversed to negative or intermediate. The geometric means of the response values for ESAT-6 and CFP-10 also showed significant decline over the treatment time. The time profile of responses in the intermediate responders revealed an obviously distinct pattern from that of the negative responders with the values remaining uniformly at very low level throughout, which suggests that this group includes somehow exceptional responders either with or without infection. Source

Asami R.,Tokyo Metropolitan Health and Medical Treatment Corporation
Kansenshōgaku zasshi. The Journal of the Japanese Association for Infectious Diseases | Year: 2010

We studied the relationship between features of beta-hemolytic streptococci (n = 45) isolated from blood in adult invasive infection and the clinical background factors observed from January 2001 through August at a hospital for the elderly. The meanage of subjects having invasive streptococcal infection with 22 invasive Streptococcus dysgalactiae subspecies equisimilis (SDSE) strains, 2 S. pyogenes isolates, and 21 S. agalactiae (GBS) was 80 years, and 85.7% and 86.4% had underly diseases in the GBS and SDSE infections. SDSE-infected were mainly emergency woman outpatients and GBS infected were mainly man inpatients. The clinical syndrome involved pneumonia, urosepsis, and cellulitis. GBS mortality was 14.3% and SDSE mortality 27.3%. Compared to survivors, nonsurvivors had more thrombocytopenia and marked serum C-reactive protein elevation when blood culture were performed. No difference was seen in white blood cell count between bath groups. Our observations suggest that blood culture should be obtained before antimicrobials administration in elderly individuals with underlying illness who are seen at the emergency department and have laboratory blood data suggestive of infectious disease. Source

Ando M.,Tokyo Metropolitan Health and Medical Treatment Corporation
Gan to kagaku ryoho. Cancer & chemotherapy | Year: 2012

It is common to use systemic chemotherapy, instead of hepatic arterial infusion (HAI) of 5-fluorouracil (5-FU) or other cytotoxic agents, for unresectable hepatic metastases in colorectal cancer patients. Nevertheless, systemic administration of anticancer agents such as FOLFOX or FOLFIRI is sometimes difficult to continue for infirm patients. A 71-year-old female who had undergone sigmoidectomy for sigmoid colon cancer received HAI for 12 months because of big bilobar hepatic metastases and poor performance status. Thereafter, a two-stage hepatectomy(first, left lobe: second, S7+8 and S5) was performed successfully. She has been alive for 2.5 years after the first operation but with two small lung metastases in the left lobe. Because of bad performance status and her weak social and familial conditions, treatment with standard systemic chemotherapy could not be continued. In such cases, HAI should be performed if the metastases are limited to the liver. Source

Takasaki J.,Tokyo Metropolitan Health and Medical Treatment Corporation
Gan to kagaku ryoho. Cancer & chemotherapy | Year: 2012

Purpose: Radiofrequency ablation(RFA) is minimally invasive and is easy to perform. In the RFA procedure, puncture and passing of the electrical current are painful. Therefore, some facilities use general anesthesia for RFA. In order to evaluate the use of general anesthesia for RFA of hepatocellular carcinoma, a questionnaire survey was conducted. Methods: With the cooperation of Tokyo liver-tomo-no-kai(Tokyo Liver Association), a questionnaire survey was conducted for patients who underwent RFA. In the survey, data on the following were obtained "type of anesthesia used", "number of RFA treatment points", "duration of treatment", "length of impact of pain", and "if you need to receive RFA treatment again, how would you feel about this." Results: The ratio of local anesthesia (LA) to general anesthesia (GA) was 113:24. The ratios of the numbers of patients who felt pain to those who felt no pain were 64:49 (LA) and 0:24 (GA). The ratios of the patients who wished to not receive RFA again to the patients who were comfortable with receiving RFA were 65:45 (LA) and 4:20 (GA). Conclusion: GA achieves better pain control compared to LA, and the patients who receive GA have greater tolerance of RFA. Source

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