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성지동,양정훈,조수진,홍선희,허은희,박승우 대한의학회 2009 Journal of Korean medical science Vol.24 No.5
Arterial stiffness is an important contributor to the development of cardiovascular disease. We investigated the effect of short duration exercise using the treadmill test on arterial stiffness in the presence of coronary artery disease. We enrolled patients with and without coronary artery diseases (CAD and control group, 50 patients each) referred for treadmill testing. Brachial-ankle pulse wave velocity (baPWV) were measured before and after treadmill testing. Values of baPWV were significantly reduced at 10 min after exercise in both groups, more in the CAD group than in the control group (baseline baPWV and post-exercise change [㎝/sec]: 1,527±245 and -132±155 in the CAD group, 1,439±202 and -77±93 in the control group, respectively, P for change in each group <0.001, P for difference in changes between the two groups <0.001). These findings persisted after adjusting for age, body mass index, systolic blood pressure, mean arterial pressure (MAP), MAP decreases, and baseline baPWV. Significant post-exercise baPWV reductions were observed in both groups, and more prominently in the CAD group. This finding suggests that short-duration exercise may effectively improve arterial stiffness even in patients with stable coronary artery disease.
Medication Event Monitoring System을 이용한한국 고혈압 환자의 약물 치료 순응도 연구
성지동,최진호,온영근,이상철,박승우,권현철,전은석,김준수,김덕경,이상훈,홍경표,박정의,서정돈 대한심장학회 2005 Korean Circulation Journal Vol.35 No.11
Background and Objectives:Compliance to a prescribed antihypertensive regimen influences the managementof hypertension in various steps, but studies on this issue are very rare in Korea. The medication event monitoringsystem (MEMS) is the gold standard in measurement of compliance, which is a special pill container, designed toelectronically monitor drug intake patterns. Here, the authors investigated the compliance to the antihypertensiveregimen in the cardiology practice of a tertiary care hospital using the MEMS. Subjects and Methods:Monitoringusing the MEMS was performed in 80 hypertensive patients during monotherapy. Demographic, clinical andpsychological profiles were collected through a standardized questionnaire. The parameters used for compliancewere the percentage of doses taken (PDT) and the percentage of doses taken correctly (PDTc), according to theprescribed regimen. Results:The mean age of the patients and duration of monitoring were 53±10 years and60±26 days, respectively. The median and range for the PDT and PDTc were 97% (88-100%) and 92% (80-97%), respectively. About 16% of patients showed relatively poor compliance (PDT<80%). Predicting factors forpoor compliance were a recent history of self-discontinuation of drug treatment, not currently being on medicationand a young age (p<0.05). Agreement between intuitive prediction by the physician and the actual compliancewas closer to what would be expected by chance (κ coefficient=-0.11). Conclusion:Although average complianceto the single drug antihypertensive regimen was relatively high in the cardiology practice of the tertiary care hospitalin this study, a significant proportion of patients show low compliance. Special consideration should be given topatients with factors predictive of poor compliance. Investigation of compliances in other clinical settings is alsowarranted.
성지동 대한의사협회 2010 대한의사협회지 Vol.53 No.3
Treatment of dyslipidemia is apparently one of the most important measures for prevention of atherosclerotic cardiovascular diseases. Recent trend reflecting several study results after publication of the ATP-III guideline in 2001 recommends more aggressive target LDL goals in very high risk patients. On the other hand, public health approaches, such as life style modification, to low risk group should not be neglected for primary prevention to avoid life-long medication in undesirably large number of people. Intensity of the treatment must be adjusted after a careful consideration of each patient's global risk, not just by lipid level alone. More attention to dyslipidemia management is needed for both clinical and public health perspectives.
Relationship between Blood Pressure Variability and the Quality of Life
성지동,김원,임승건,정안수,우종민 연세대학교의과대학 2014 Yonsei medical journal Vol.55 No.2
Purpose: Blood pressure variability (BPV) is emerging as an important cardiovascularprognostic factor in addition to average blood pressure level. While there have been some suggestions for the determinants of the blood pressure variability, little is known about the relationship between the blood pressure variability and health-relatedquality of life (QOL). Materials and Methods: Fifty-six men and women with mild hypertension were enrolled from local health centers in Republic of Korea,from April to October 2009. They self-monitored their blood pressure twice daily for 8 weeks. Pharmacological treatment was not changed during the period. Standard deviation and coefficient of variation of blood pressure measurements were calculated as indices of BPV. Measurements of QOL were done at initial and at 8-week follow-up visits. Results: Study subjects had gender ratio of 39:41 (male:female) and the mean age was 64±10 years. The mean home blood pressure’s at week 4 and 8 did not differ from baseline. Total score of QOL at follow-up visit and change of QOL among two measurements were negatively correlated to BPV indices, i.e., higher QOL was associated with lower BPV. This finding persisted afteradjustment for age, gender and the number of antihypertensive agents. Among dimensions of QOL, physical, mental and hypertension-related dimensions were associated particularly with BPV. Conclusion: QOL may be a significant determinantof BPV. Improvement of QOL may lead to favorable changes in BPV.