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31.
MICHAEL C.G. WONG M.B.B.S. JONATHAN M. KALMAN M.B.B.S Ph.D. LIANG‐HAN LING M.B.B.S. CAROLINE MEDI M.B.B.S. ANDREW TEH M.B.B.S. Ph.D. GEOFFREY LEE M.B.Ch.B. SAURABH KUMAR B.Sc. /M.B.B.S. JOSEPH B. MORTON M.B.B.S. Ph.D. PETER M. KISTLER M.B.B.S. Ph.D. 《Journal of cardiovascular electrophysiology》2013,24(4):413-418
Left Septal Atrial Tachycardias. Objective: The objective was to characterize the electrocardiographic and electrophysiological features of focal atrial tachycardia (FAT) originating from the left septum (LS). Background: FAT is recognized to occur at predefined anatomic locations rather than randomly throughout the atria. We describe the ECG and EP features of ATs originating from the LS as an important site for apparent perinodal tachycardias. Methods: Nine patients presenting with LS FAT from a consecutive series of 384 underwent EP/RFA for symptomatic FAT. Results: The mean age was 56 ± 12 years; 7 female with symptoms for 36 ± 28 months. P wave morphology (PWM) was negative/positive in lead V1 and across the precordial leads and negative or negative/positive in inferior leads in all patients. Tachycardia was incessant in 6 out of 9 patients with a mean tachycardia cycle length 421 ± 56 milliseconds. His A was ahead of P wave in all patients (mean ?15 ± 5 milliseconds) and earlier than CS proximal (mean 4 ± 9 milliseconds). Successful acute focal ablation achieved at a mean of 31 ± 12 milliseconds ahead of P wave with no recurrences at a mean follow‐up of 30 ± 28 months. Conclusion: Although the left septum is an uncommon site for focal AT an awareness of this location for harboring foci is particularly important when mapping apparently right‐sided septal tachycardias. (J Cardiovasc Electrophysiol, Vol. 24, pp. 413‐418, April 2013) 相似文献
32.
Determining the Optimal Dose of Adenosine for Unmasking Dormant Pulmonary Vein Conduction Following Atrial Fibrillation Ablation: Electrophysiological and Hemodynamic Assessment. DORMANT‐AF Study
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SANDEEP PRABHU M.B.B.S. VINCENT MACKIN B.Sc. ALEX J.A. MCLELLAN M.B.B.S. Ph.D. TUONG PHAN M.B.B.S. DESMOND MCGLADE M.B.B.S. LIANG‐HAN LING M.B.B.S. Ph.D. KAH Y. PECK M.B.B.S. ALEXANDR VOSKOBOINIK M.B.B.S. BUPESH PATHIK M.B.B.S. F.R.A.C.P. CHRISHAN J. NALLIAH M.B.B.S. GEOFF R. WONG M.B.B.S. SONIA M. AZZOPARDI R.N. GEOFFREY LEE M.B.Ch.B. Ph.D. JUSTIN MARIANI M.B.B.S. Ph.D. ANDREW J. TAYLOR M.B.B.S. Ph.D. JONATHAN M. KALMAN M.B.B.S. Ph.D. F.H.R.S. PETER M. KISTLER M.B.B.S. Ph.D. F.H.R.S. 《Journal of cardiovascular electrophysiology》2017,28(1):13-22
33.
HUANG Y.-G.; WONG K. C.; YIP W.-H.; McJAMES S. W.; PACE N. L. 《British journal of anaesthesia》1995,74(5):583-590
We have studied the cardiovascular effects of incremental dosesof three catecholamines in dogs subjected to lactic (LAC) andhydrochloric (HCl) acidosis. Fifty-four dogs were allocatedrandomly to one of three groups: control, LAC and HCl acidosis(n = 18 each group). In the acidotic models, 2 mol litre1of lactic acid (4 ml kg1 h1 or 2 mol litre1of HCl (1 ml kg1 h1) was infused i.v. until arterialpH was reduced to 7.00±0.1. Within each group, six dogsreceived one of three different drugs in logarithmically incrementaldoses: adrenaline 0.1, 0.2, 0.4, 0.8, 1.6, 3.2 µg kg1min1, noradrenaline 0.1, 0.2, 0.4, 0.8, 1.6, 3.2 µgkg1 min1 and dobutamine 5, 10, 20, 40, 80, 160µg kg1 min1 Cardiovascular variables weremonitored, with periodic measurements of plasma electrolyteand lactate concentrations. The pH reduction induced by HClor lactic acid was associated with a statistically significantincrease in mean pulmonary arterial pressure (MPAP), prominentespecially in the LAC group where MPAP increased from mean 18(SD 5) to 27 (6) mm Hg. In the acidotic models, the reductionin myocardial responsiveness to adrenaline or noradrenalinewas more prominent than that for the control for correspondingdoses of drugs. In the LAC group mean cardiac index decreasedsignificantly from 5.2 (1.8) to 2.2 (0.7) litre min1m2 after infusion of adrenaline 3.2 µg kg1min1 and decreased from 5.1 (1.1 to 2.4 (0.9) litre min1m1 after infusion of noradrenaline 3.2 µg kg1min1. In contrast, dobut amine showed dose-dependentincreases in cardiac index and heart rate in control, as wellas acidotic groups. The acute HCl acidosis induced greater hyperkalaemiathan the lactic acidosis. (Br. J. Anaesth. 1995; 74: 583590) 相似文献
34.
35.
Fiona HEGI-JOHNSON Gabriel GABRIEL rew KNEEBONE Cyril WONG Bin JALALUDIN Sharon BEHAN Michael BARTON 《Asia-Pacific Journal of Clinical Oncology》2007,3(3):134-142
Background and purpose: Despite evidence for the efficacy of radiotherapy in stages II and III rectal cancer, utilization rates remain low. The aim of this study is to examine patient, provider and service factors affecting utilization of radiotherapy in rectal cancer patients. Materials and methods: Patients with a diagnosis of curable rectal cancer were identified from the colorectal tumor databases of three Sydney Area Health Services between 1994 and 2001. Data were collected on tumor characteristics such as site and stage, provider factors such as type of surgery and surgeon caseload, and patient factors including socioeconomic status and access to radiotherapy. Results: Thirty‐five percent of stage II and 57% of stage III rectal cancer patients received radiotherapy. Independent determinants of utilization were age less than 70 years (odds ratio, 2.96; 95% confidence interval, 1.75–5.03), high‐volume surgeons (OR, 1.95; 95% CI, 1.17–3.24), stage III disease (OR, 2.06; 95% CI, 1.25–3.41) and abdominoperineal resections (OR, 3.67; 95% CI, 1.94–6.94). Conclusion: Radiotherapy utilization rates remain low. Age, and being referred to a surgeon with a high caseload, has a greater impact on radiotherapy utilization than other provider, socioeconomic or service factors. 相似文献
36.
Objective To investigate possible mechanisms underlying the antioxidant property(1)and the in vitro vasodilator effects(2)of the two ginsenosides,Rb1 and Rg1,in isolated rat renal and cerebral arteries.Methods Arterial rings were mounted in a multi-channel myograph for recording of isometric tension.To examine the antioxidant activity,some rings were exposed to a free radical-generating reaction(hypoxanthine and xanthine oxidase)with and without pre-treatment with ginsenosides.The calcium antagonistic effects were tested on rings contracted by membrane depolarization in elevated extracellular potassium ions,a condition that promoted Ca2+ influx in vascular smooth muscle cells.Results Ginsenosides protected endothelial function(endothelial nitric oxide-dependent relaxation)against oxidative stress;(2)ginsenoside Rb1 reduced the high K+-induced contractions of both renal and cerebral arteries while ginsenoside Rg1 relaxed the rat cerebral artery but not the renal artery.Conclusions Ginsenosides are vaso-protective via(1)the antioxidant activity which protects endothelial cell function and(2)the inhibition of Ca2+ influx through voltage-sensitive Ca2+ channels in vascular smooth muscle.The vasodilator effects may suggest the potential preventive or therapeutic values of ginsenosides against stroke and renal hypertension. 相似文献
37.
老年患者用药不依从性原因分析及对策 总被引:4,自引:0,他引:4
目的 探讨老年患者的用药特点,为更好地增加老年患者用药依从性,提高老年患者生活质量提供科学依据.方法 对我国老年患者用药不依从性的表现及其危害进行分析,探讨影响老年患者服药不依从性的主要原因并提出对策.结果 老年患者具有慢性病多、病程长、并发症多的特点,多种药物联合应用比例高并且复杂,对药物的耐受性降低,对药物治疗的依从性下降.结论 用药依从性是合理用药的组成部分,只有严格遵守医嘱用药的患者,才有可能达到安全、合理、有效和经济用药的目的. 相似文献
38.
Benny ZEE Chuwen HUANG Suzanne MAK Jonathan WONG Eunice CHAN Winnie YEO 《Asia-Pacific Journal of Clinical Oncology》2008,4(4):218-226
Aim: To examine the association between a broad array of characteristics and sexuality in breast cancer patients in Hong Kong. Method: We collected data on demographic and clinical factors, psychosocial well‐being, quality of life (QOL), body image and sexual health of breast cancer patients presented to the Department of Clinical Oncology, Prince of Wales Hospital from November 2005 to February 2006. Results: More than 40% of Chinese breast cancer patients experienced moderate problems in sexual health. Their medical treatment had a greater influence on their sexual functioning in a change in their social activities, whereas more support from their partner predicted less influence. The presence of a child and more support from their partner predicted greater sexual satisfaction. Undergoing the menopause related to a longer time to resume sexual activity after cancer treatment. A change of relationship with their partner and a loss of self‐confidence were strong predictors of sexual problems influencing their QOL. Patients who had experienced a change in their relationship with their partner or had greater sexual problems were more likely to perceive greater benefit from professional intervention on sexual problem. Conclusion: An improvement in their intimate relationships and enhanced psychosocial functioning should improve the sexual health of Chinese women with breast cancer. 相似文献
39.
A unique case of a Chinese boy with Wiskott-Aldrich syndrome (WAS) associated with Takayasu's arteritis is reported. He had eczema, epistaxis and recurrent infections since early infancy and was found to have thrombocytopenia, negative delayed-type skin hypersensitivity, low T cell number and impaired lymphocyte proliferation to phytohaemagglutinin and concanavalin A. He had high normal serum immunoglobulin (Ig)G and IgA with low IgM and isohaemagglutinin. He presented with hypertensive encephalopathy at 5.5 years of age and an aortogram demonstrated abdominal aortic aneurysm with bilateral stenosis of renal arteries resulting in renovascular hypertension. His hypertension was difficult to control medically and autotransplant of his kidneys to the iliac arteries was performed, but he died in the immediate postoperative period. The relationship between immunodeficiency and collagen-vascular disease was discussed. 相似文献
40.
K. P. FUNG MB BS MRCP DCH Senior Lecturer H. Y. S. Ngan MB BS MRCOG Senior Medical Officer .J. S. K. WOO MB BS MRCOG Senior Lecturer .T. W. WONG MB BS FACOM Senior Lecturer . 《Journal of paediatrics and child health》1988,24(3):184-185
Partial and multiple regression analysis was performed to find out the correlation between birthweight and maternal anthropometric variables. Pearson regression analysis revealed significant dependence of birthweight on gestation of pregnancy, maternal weight, symphysis-sternal distance and height, but not on armspan and skin thickness. However, the only maternal variable bearing significant influence on birthweight in partial regression analysis was bodyweight. The effects of maternal determinants on birthweight, though some of them were statistically significant, were clinically unimportant. 相似文献