研究者業績

苅尾 七臣

カリオ カズオミ  (Kazuomi Kario)

基本情報

所属
自治医科大学 医学部 内科学講座循環器内科学部門 教授
学位
(BLANK)

J-GLOBAL ID
200901026266273395
researchmap会員ID
1000220767

学歴

 2

論文

 272
  • Masafumi Nishizawa, Takeshi Fujiwara, Satoshi Hoshide, Keiko Sato, Yukie Okawara, Naoko Tomitani, Takefumi Matsuo, Kazuomi Kario
    Journal of Clinical Hypertension 21(2) 208-216 2019年2月1日  
    This study investigated the association between winter morning surge in systolic blood pressure (SBP) as measured by ambulatory BP monitoring and the housing conditions of subjects in an area damaged by the Great East Japan Earthquake. In 2013, 2 years after disaster, hypertensives who lived in homes that they had purchased before the disaster (n = 299, 74.6 ± 8.1 years) showed significant winter morning surge in SBP (+5.0 ± 20.8 mmHg, P &lt  0.001), while those who lived in temporary housing (n = 113, 76.2 ± 7.6 years) did not. When we divided the winter morning surge in SBP into quintiles, the factors of age ≥75 years and occupant-owned housing were significant determinants for the highest quintile (≥20 mmHg) after adjustment for covariates. The hypertensives aged ≥75 years who lived in their own homes showed a significant risk for the highest quintile (odds ratio 5.21, 95% confidence interval 1.49-18.22, P = 0.010). It is thus crucial to prepare suitable housing conditions for elderly hypertensives following a disaster.
  • Yasuhiro Yokoyama, Hitoshi Hachiya, Tomonori Watanabe, Ayako Yokota, Takahiro Komori, Tomoyuki Kabutoya, Yasushi Imai, Kazuomi Kario
    Journal of Electrocardiology 52 66-69 2019年1月1日  
    Idiopathic ventricular tachycardias (VTs) originating from the non-coronary cusp (NCC) are very rare. The previous reports suggested NCC-VTs were characterized by a narrower QRS duration and smaller III/II ratio than VTs originating from other coronary-cusps. We present a rare case of an NCC-VT with a local fragmented potential recorded at the NCC inconsistent with the known ECG characteristics of NCC-VTs.
  • Toshiki Kaihara, Satoshi Hoshide, Naoko Tomitani, Hiroshi Kanegae, Kazuomi Kario
    Clinical and experimental hypertension (New York, N.Y. : 1993) 41(8) 774-778 2019年  
    Background: Maximum home systolic blood pressure (maximum SBP) has been reported as a parameter of blood pressure (BP) variability. We tested the hypothesis that maximum SBP is one of the risk factors of hypertensive target organ damage (TOD).Methods: We conducted a cross-sectional study of 4,310 subjects with>1 cardiovascular risk factor. The subjects measured their home BP for 14 consecutive days. Mean and maximum SBPs were used as independent variables. As dependent variables, we used left ventricular mass index (LVMI), brachial-ankle pulse wave velocity (baPWV), maximum carotid intima-media thickness (CIMT), and urine albumin creatinine ratio (UACR).Results: In a multiple regression analysis, the subjects' mean and maximum SBPs were significantly associated with the above TOD markers. Compared to mean SBP, maximum SBP demonstrated a significantly stronger association with CIMT (p<0.001).Conclusion: Based on its clinical significance herein, measurement of maximum home SBP is warranted in addition to measurement of mean home SBP.
  • Keisuke Narita, Kazuo Eguchi, Kazuomi Kario
    Blood pressure monitoring 23(6) 283-287 2018年12月  
    OBJECTIVE: This study investigated the changes of ambulatory blood pressure (ABP) profiles on the same participants over a 19-year follow-up. PARTICIPANTS AND METHODS: This is a longitudinal study. We conducted 24-h ABP monitoring at baseline in November 1997 and at follow-up in November 2016 for the same participants who were outpatients in a solitary island clinic. To estimate ambulatory blood pressure variability (ABPV), SD, coefficient of variation, and average real variability of ABP were calculated. ABP levels and ABPV at baseline and follow-up were compared using paired t-test. RESULTS: A total of 35 participants were recruited at follow-up (79.3±6.7 years at follow-up). Mean systolic blood pressure levels in 24-h, daytime, and night-time did not change significantly. However, ABPV of systolic/diastolic blood pressure in 24-h and daytime increased at follow-up compared with baseline (P<0.01 in all variables: SD, coefficient of variation, and average real variability), whereas ABPV in night-time did not change significantly. CONCLUSION: Our observations suggested that 24-h and daytime ABPV increase with aging in community-dwelling elderly people.
  • Keisuke Narita, Satoshi Hoshide, Kazuomi Kario
    Expert review of cardiovascular therapy 16(12) 889-895 2018年12月  
    Randomized controlled trials and meta-analyses have established the benefits of blood pressure (BP) lowering. The 2017 American Heart Association/American College of Cardiology (AHA/ACC) guidelines for the management of hypertension established 130/80 mmHg as the threshold for the diagnosis- and treatment-target BP level. Area covered: The global trends are thought to be heading toward intensive BP-lowering management. In this paper, authors summarize the evidence on lowering the BP target in hypertensive patients with a focus on the 2017 AHA/ACC guidelines. Expert commentary: According to the results of clinical research, meta-analyses and the 2017 AHA/ACC guidelines, the target systolic BP may change from less than 140/80 mmHg to 130/80 mmHg in any other international hypertension guidelines. However, this direction of intensive BP control is still controversial.
  • Takeshi Fujiwara, Masafumi Nishizawa, Satoshi Hoshide, Hiroshi Kanegae, Kazuomi Kario
    Journal of Clinical Hypertension 20(11) 1633-1641 2018年11月1日  
    The objective of this study was to test our hypothesis that nocturnal home blood pressure (BP) measurement adapted to the chosen bedtime of participants (measurement at 2, 3, and 4 hour after the chosen bedtime) would be more reliable than measurement at fixed time points (2:00, 3:00, and 4:00 am). Forty-eight hypertensives were randomized to two groups undergoing two seven-night measurement phases in a crossover manner and were asked to measure nocturnal home BP for 14 consecutive nights using a validated automatic information/communication technology-based device. The intraclass correlation coefficients (ICCs) of systolic BP (SBP) obtained by a single measurement per night over two nights showed lower agreement than those of systolic BP obtained by multiple measurements based on a participant-specified bedtime (0.539-0.625 vs 0.675-0.768) and multiple measurements at fixed times (0.468-0.505 vs 0.661-0.790). The ICCs obtained using specific bedtime-based time points and those obtained using fixed time points showed major agreement when SBP was obtained by multiple measurements. The standard errors of measurement for SBP were similar between the bedtime-based measurement phase (1.4-1.7 mm Hg) and the fixed-time measurement phase (1.2-1.6 mm Hg). Neither a fixed bias nor a proportional bias was observed between the SBP values measured by the specific bedtime-based time points and those measured by the fixed-time measurement phase. In conclusion, the reliability of nocturnal home BP measurement appeared to be similar between nocturnal home BP adapted to the chosen bedtime of participants and that measured at fixed time points.
  • Tomoyuki Kabutoya, Yasushi Imai, Yasuhiro Yokoyama, Ayako Yokota, Tomonori Watanabe, Takahiro Komori, Kazuomi Kario
    Journal of Electrocardiology 51(6) 1099-1102 2018年11月1日  
    Background: The association between the vectorcardiographic QRS area, bundle branch pattern and clinical long-term prognosis in patients who have undergone cardiac resynchronization therapy (CRT) has been unclear. Methods: We enrolled 50 consecutive patients who underwent CRT. Vectorcardiograms were constructed from preprocedural digital 12-lead electrocardiograms using the inverse Dower method. The vectorcardiographic QRS area was defined as the root of the sum of the square in the integral between the ventricular deflection curve and the baseline from QRS beginning to end in leads X, Y, and Z. The primary endpoints were total mortality and admission due to heart failure. Results: The vectorcardiographic QRS area in left bundle branch block (N = 13), right bundle branch block (N = 13), interventricular conduction delay (N = 11) and pacemaker rhythm (N = 13) were 218 ± 99, 97 ± 44, 90 ± 40, and 131 ± 58 μVs, respectively (ANOVA p &lt 0.001). During the mean follow-up period of 28 (2–86) months, 13 primary endpoints occurred. We divided patients into two groups: a large QRS area group (QRS area ≥114 μVs, N = 25) and a small QRS area group (QRS area &lt 114 μVs, N = 25) by the median. The large QRS area group had a significantly lower rate of the primary endpoint compared with that of the small QRS area group (log rank 4.35, p = 0.037). The Cox regression analysis revealed that a QRS area &lt 114 μVs was a significant predictor of the primary endpoint (HR 3.98, 95% CI 1.01–15.63, p = 0.048). Conclusions: A larger preprocedural vectorcardiographic QRS area was associated with left bundle branch block and good prognosis in patients who underwent CRT.
  • Nobuo Sasaki, Michiaki Nagai, Hiroyuki Mizuno, Mitsuo Kuwabara, Satoshi Hoshide, Kazuomi Kario
    Hypertension (Dallas, Tex. : 1979) 72(5) 1133-1140 2018年11月  
    Research suggests that oxygen desaturation and sleep stage during obstructive sleep apnea (OSA) are related to the magnitude of high blood pressure (BP) in a laboratory setting. However, in a clinical setting, these associations have not been well studied. We used a noninvasive oscillometric BP measurement device to investigate the association between oxygen-triggered BP levels at the end of each OSA episode and the characteristics of the preceding OSA episode. In 42 newly diagnosed OSA patients (average age, 63.5±12.5 years; average apnea-hypopnea index, 32.6±18.2 per hour), 258 BP measurements were obtained at the end of OSA episodes. Hypoxia-peak systolic BP (SBP), defined as the maximum oxygen-triggered SBP value, was significantly higher in rapid eye movement sleep (144.9±19.9 mm Hg) than in non-rapid eye movement stage 1 sleep (129.5±15.1 mm Hg; P<0.001) and non-rapid eye movement stage 2 sleep (129.4±14.7 mm Hg; P<0.001). In a multivariate-linear mixed model, the lowest oxygen saturation percentage during each OSA episode was associated with increased hypoxia-peak SBP (-0.501 mm Hg; P<0.001), nocturnal SBP surge (-0.395 mm Hg; P<0.001), defined as the difference between the hypoxia-peak SBP and the mean nocturnal SBP, and maximum value of SBP surge (-0.468 mm Hg; P<0.001), defined as the difference between the hypoxia-peak SBP and the minimum nocturnal SBP independent of sleep stage. These values were not associated with the duration of each OSA episode. The contribution of rapid eye movement sleep and severe oxygen desaturation to OSA-related BP elevation measured with a noninvasive oscillometric method was determined in a clinical setting.
  • Kotruchin P, Hoshide S, Kanegae H, Pongchaiyakul C, Kario K
    Journal of human hypertension 2018年10月  査読有り
  • Oba Y, Hoshide S, Kabutoya T, Kario K
    American journal of hypertension 31(10) 1106-1112 2018年9月  査読有り
  • Kawauchi D, Hoshide S, Kario K
    American journal of hypertension 2018年9月  査読有り
  • Kario K, Saito K, Sato K, Hamasaki H, Suwa H, Okura A, Hoshide S
    Blood pressure monitoring 2018年9月  査読有り
  • Kabutoya T, Hoshide S, Davidson KW, Kario K
    Hypertension research : official journal of the Japanese Society of Hypertension 2018年9月  査読有り
  • Fukutomi M, Toriumi S, Ogoyama Y, Oba Y, Takahashi M, Funayama H, Kario K
    Catheterization and cardiovascular interventions : official journal of the Society for Cardiac Angiography & Interventions 93(5) e27896 2018年9月  査読有り
  • Kario K, Hoshide S, Okawara Y, Tomitani N, Yamauchi K, Ohbayashi H, Itabashi N, Matsumoto Y, Kanegae H
    Journal of clinical hypertension (Greenwich, Conn.) 2018年9月  査読有り
  • Fujiwara T, Yano Y, Hoshide S, Kanegae H, Hashimoto J, Kario K
    American journal of hypertension 31(9) 995-1001 2018年8月  査読有り
  • Fujiwara T, Yano Y, Hoshide S, Kanegae H, Kario K
    JAMA cardiology 3(7) 583-590 2018年7月  査読有り
  • Taki M, Ishiyama Y, Mizuno H, Komori T, Kono K, Hoshide S, Kario K
    Circulation journal : official journal of the Japanese Circulation Society 82(8) 2096-2102 2018年7月  査読有り
  • Taki M, Hoshide S, Kono K, Kario K
    Pulse (Basel, Switzerland) 6(1-2) 1-8 2018年7月  査読有り
  • Hoshide S, Komori T, Ogata Y, Eguchi K, Kario K
    Pulse (Basel, Switzerland) 6(1-2) 98-102 2018年7月  査読有り
  • David E Kandzari, Michael Böhm, Felix Mahfoud, Raymond R Townsend, Michael A Weber, Stuart Pocock, Konstantinos Tsioufis, Dimitrios Tousoulis, James W Choi, Cara East, Sandeep Brar, Sidney A Cohen, Martin Fahy, Garrett Pilcher, Kazuomi Kario, Jiro Aoki, Bryan Batson, Michael Böhm, James W. Choi, Debbie L. Cohen, George Dangas, Shukri David, Justin Davies, Chandan M. Devireddy, David Kandzari, Kazuomi Kario, David P. Lee, Philipp C. Lurz, Vasilios Papademetriou, Manesh Patel, Kiritkumar Patel, Roland E. Schmieder, Andrew S.P. Sharp, Jasvindar Singh, Konstantinos Tsioufis, Antony Walton, Thomas Weber, Joachim Weil, Thomas Zeller, Khaled Ziada, Kengo Tanabe, Robert Wilkins, Felix Mahfoud, Cara East, Robert Wilensky, Johanna Contreras, Susan Steigerwalt, Neil Chapman, Janice P. Lea, Denise Reedus, Satoshi Hoshide, Adrian Ma, Karl Fengler, Ping Li, Laura Svetkey, Anjani Rao, Axel Schmid, Anthony F Watkinson, Angela Brown, Dimitrios Tousoulis, Ingrid Hopper, Markus Suppan, Tolga Agdirlioglu, Elias Noory, Craig Chasen, SPYRAL HTN-ON MED Trial Investigators
    The Lancet 391(10137) 2346-2355 2018年6月9日  査読有り
    Background: Previous catheter-based renal denervation studies have reported variable efficacy results. We aimed to evaluate safety and blood pressure response after renal denervation or sham control in patients with uncontrolled hypertension on antihypertensive medications with drug adherence testing. Methods: In this international, randomised, single-blind, sham-control, proof-of-concept trial, patients with uncontrolled hypertension (aged 20–80 years) were enrolled at 25 centres in the USA, Germany, Japan, UK, Australia, Austria, and Greece. Eligible patients had an office systolic blood pressure of between 150 mm Hg and 180 mm Hg and a diastolic blood pressure of 90 mm Hg or higher a 24 h ambulatory systolic blood pressure of between 140 mm Hg and 170 mm Hg at second screening and were on one to three antihypertensive drugs with stable doses for at least 6 weeks. Patients underwent renal angiography and were randomly assigned to undergo renal denervation or sham control. Patients, caregivers, and those assessing blood pressure were masked to randomisation assignments. The primary efficacy endpoint was blood pressure change from baseline (measured at screening visit two), based on ambulatory blood pressure measurements assessed at 6 months, as compared between treatment groups. Drug surveillance was used to assess medication adherence. The primary analysis was done in the intention-to-treat population. Safety events were assessed through 6 months as per major adverse events. This trial is registered with ClinicalTrials.gov, number NCT02439775, and follow-up is ongoing. Findings: Between July 22, 2015, and June 14, 2017, 467 patients were screened and enrolled. This analysis presents results for the first 80 patients randomly assigned to renal denervation (n=38) and sham control (n=42). Office and 24 h ambulatory blood pressure decreased significantly from baseline to 6 months in the renal denervation group (mean baseline-adjusted treatment differences in 24 h systolic blood pressure −7·0 mm Hg, 95% CI −12·0 to −2·1 p=0·0059, 24 h diastolic blood pressure −4·3 mm Hg, −7·8 to −0·8 p=0.0174, office systolic blood pressure −6·6 mm Hg, −12·4 to −0·9 p=0·0250, and office diastolic blood pressure −4·2 mm Hg, −7·7 to −0·7 p=0·0190). The change in blood pressure was significantly greater at 6 months in the renal denervation group than the sham-control group for office systolic blood pressure (difference −6·8 mm Hg, 95% CI −12·5 to −1·1 p=0·0205), 24 h systolic blood pressure (difference −7·4 mm Hg, −12·5 to −2·3 p=0·0051), office diastolic blood pressure (difference −3·5 mm Hg, −7·0 to −0·0 p=0·0478), and 24 h diastolic blood pressure (difference −4·1 mm Hg, −7·8 to −0·4 p=0·0292). Evaluation of hourly changes in 24 h systolic blood pressure and diastolic blood pressure showed blood pressure reduction throughout 24 h for the renal denervation group. 3 month blood pressure reductions were not significantly different between groups. Medication adherence was about 60% and varied for individual patients throughout the study. No major adverse events were recorded in either group. Interpretation: Renal denervation in the main renal arteries and branches significantly reduced blood pressure compared with sham control with no major safety events. Incomplete medication adherence was common. Funding: Medtronic.
  • Kario K
    Hypertension (Dallas, Tex. : 1979) 71(6) 997-1009 2018年6月  査読有り
  • Kazuomi Kario
    Journal of Clinical Hypertension 20(6) 1073-1077 2018年6月1日  査読有り
  • Mitsuo Kuwabara, Naoko Tomitani, Toshikazu Shiga, Kazuomi Kario
    Journal of Clinical Hypertension 20(6) 1039-1048 2018年6月1日  査読有り
    Obstructive sleep apnea causes blood pressure (BP) surges during sleep, which may lead to increased sleep-onset cardiovascular events. The authors recently developed an oxygen-triggered nocturnal BP monitoring system that initiates BP measurements when oxygen desaturation (SpO2) falls below a variable threshold. The association between nocturnal BP parameters obtained by nocturnal BP monitoring and simultaneously examined polysomnography-derived sleep parameters in 116 patients with obstructive sleep apnea (mean age 57.9 years, 85.3% men) was studied. In multivariable analysis with independent factors of age, body mass index, sex, and polysomnography-derived measures (apnea-hypopnea index, apnea index, arousal index, lowest SpO2, and SpO2 &lt  90%), apnea-hypopnea index (β =.26, P =.02) and lowest SpO2 (β = −.34, P &lt .001) were independent determinants of hypoxia-peak systolic BP (SBP), defined as the maximum SBP value measured by nocturnal BP monitoring. Similarly, apnea-hypopnea index (β =.21, P =.04) and lowest SpO2 (β = −.49, P &lt .001) were independent determinants of nocturnal SBP surge, defined as the difference between the hypoxia-peak SBP and the average of the SBP values within 30 minutes before and after the hypoxia-peak SBP, measured by the fixed-interval function in the manner of conventional ambulatory BP monitoring. In conclusion, in polysomnography-derived parameters, lowest SpO2, defined as the minimum SpO2 value during sleep, is the strongest independent determinant of hypoxia-peak SBP and nocturnal SBP surge measured by nocturnal BP monitoring. Our findings suggest that the severity of the decrease in SpO2 and the frequency of such decreases would be important indicators to identify high-risk patients who are likely to develop cardiovascular events specifically during sleep.
  • Hoshide S, Yano Y, Kanegae H, Kario K
    Journal of the American College of Cardiology 71(24) 2858-2859 2018年6月  査読有り
  • Kanegae H, Oikawa T, Suzuki K, Okawara Y, Kario K
    Journal of clinical hypertension (Greenwich, Conn.) 20(5) 880-890 2018年5月  査読有り
  • Tomoyuki Kabutoya, Satoshi Hoshide, Kazuomi Kario
    Journal of the American Society of Hypertension 12(5) 340-345.e2 2018年5月1日  査読有り
    The integrated flow-mediated vasodilation (FMD) response has been associated with cardiovascular (CV) risk factors, but the association between the integrated FMD response and subsequent CV events has been unclear. We enrolled 555 patients who had at least one CV risk factor (hypertension, dyslipidemia, diabetes, or smoking). We measured the peak percentage change in diameter (ΔFMD), and integrated FMD response calculated as the area under the dilation curve over a 120-second dilation period (FMD-AUC120). Elderly patients (age ≥ 65 years, N = 270) in the lowest tertile of FMD-AUC120 (FMD-AUC120 &lt 5.6) had a higher rate of CV events compared with those in the two higher tertiles (FMD-AUC120 ≥ 5.6) (log rank 4.15, P =.041). The association remained significant after adjusting for covariates (hazard ratio 3.84, P =.007). In the 285 middle-aged patients (age &lt 65 years), the CV event rates were similar between patients in the lowest tertile and those in the two higher tertiles of FMD-AUC120 (log rank 0.39, P =.53). The CV event rates were similar between patients in the lowest tertile and those in the two higher tertiles of ΔFMD in elderly and middle-aged patient groups. In conclusion, integrated flow-mediated vasodilation response, but not ΔFMD, predicted CV events in elderly patients with CV risk factors.
  • 石山 裕介, 原田 顕治, 佐藤 雅史, 大場 祐輔, 小形 幸代, 苅尾 七臣, 相澤 啓, 西村 芳興
    超音波医学 45(Suppl.) S650-S650 2018年4月  
  • Satoshi Niijima, Tsukasa Ohmori, Kazuomi Kario
    Thrombosis Journal 16(1) 5 2018年3月15日  査読有り
    Background: Although prasugrel exerts stronger antiplatelet effects compared with clopidogrel, the factors affecting platelet reactivity under prasugrel have not been fully determined. This study aimed to find the novel mechanistic differences between two thienopyridines and identify the factor that influence platelet reactivity to each drug. Methods: Forty patients with stable angina who underwent elective percutaneous coronary intervention were randomly assigned to receive either prasugrel (20 mg) or clopidogrel (300 mg) as a loading dose. Platelet function (light transmission, laser light scattering, and vasodilator-stimulated phosphoprotein phosphorylation) and plasma active metabolite levels were measured after the loading dose. Results: Prasugrel consistently inhibited adenosine diphosphate receptor P2Y12 signalling to abolish amplification of platelet aggregation. Prasugrel abolished even small platelet aggregates composed of less than 100 platelets. On the other hand, clopidogrel inhibited large aggregates but increased small and medium platelet aggregates. Diabetes was the only independent variable for determining antiplatelet effects and active metabolite concentration of prasugrel, but not clopidogrel. Sleep-disordered breathing was significantly correlated with platelet reactivity in patients who had clopidogrel. Conclusions: Prasugrel efficiently abolishes residual P2Y12 signalling that causes small platelet aggregates, but these small aggregates are not inhibited by clopidogrel. Considering the differential effect of diabetes on antiplatelet effects between these two drugs, the pharmacokinetics of prasugrel, other than cytochrome P450 metabolism, might be affected by diabetes.
  • Praew Kotruchin, Satoshi Hoshide, Kazuomi Kario
    Journal of Clinical Hypertension 20(3) 450-455 2018年3月1日  査読有り
    The impact of a nondipping blood pressure (BP) pattern, defined as (awake systolic BP – sleep systolic BP)/awake systolic BP &lt  0.1, on cardiovascular events in populations with different degrees of carotid atherosclerosis is uncertain. The authors hypothesized that a nondipping BP pattern would show differential predictive power for cardiovascular events, including total cardiovascular death, sudden death, nonfatal cardiovascular events, and nonfatal stroke, between populations with and without carotid atherosclerosis. To test this hypothesis, the authors analyzed 493 patients (mean age 67.9 years, 47.5% men) from the J-HOP (Japan Morning Surge-Home Blood Pressure) study for whom ambulatory BP monitoring and carotid intima-media thickness data were available. Twenty-nine cardiovascular events occurred during follow-up (1867 person-years). A nondipping BP pattern was independently associated with cardiovascular events in the population without carotid atherosclerosis, defined as carotid intima-media thickness &lt  1.1 mm after adjustment for other cardiovascular risk factors including age, sex, diabetes mellitus, chronic kidney disease, and 24-hour systolic BP (hazard ratio, 8.15 95% confidence interval, 1.76–37.78 [P &lt .01]). This association was not found in the population with carotid intima-media thickness ≥ 1.1 mm. Therefore, in the hypertensive population without carotid atherosclerosis, physicians should consider ambulatory BP monitoring to determine the nocturnal BP pattern as an alternative approach to assessing cardiovascular events.
  • Natsuki Cho, Satoshi Hoshide, Masafumi Nishizawa, Takeshi Fujiwara, Kazuomi Kario
    American Journal of Hypertension 31(3) 293-298 2018年2月9日  査読有り
    Background: Although higher blood pressure (BP) levels and BP variability have been associated with cognitive impairment, data are sparse regarding the relationship between BP variability and cognitive function in elderly patients with well BP control. Methods: We analyzed 232 ambulatory patients with one or more cardiovascular risk factors. All patients underwent ambulatory BP monitoring and the Japanese version of the Montreal Cognitive Assessment (MoCA-J). Results: The mean age was 77.7 ± 8.3 years 33.6% were male, and 85.3% were taking antihypertensive drugs. The average 24-hour BP level was 118.7 ± 10.0/68.3 ± 6.4 mm Hg. When we divided the weighted SD of systolic BP (SBP) as a measure of BP variability into quartiles, the top quartile group (≥19.6 mm Hg) had a significantly lower total MoCA-J score (15.4 [95% confidence interval 14.2-16.7] vs. 17.9 [17.2-18.6], P = 0.001) and lower scores on several domains, visuoexecutive (2.2 [1.9-2.6] vs. 2.8 [2.6-2.9], P = 0.012), abstraction (1.0 [0.7-1.2] vs. 1.3 [1.1-1.4], P = 0.015), attention (2.8 [2.4-3.1] vs. 3.6 [3.4-3.8], P = 0.001), and naming (2.1 [1.9-2.3] vs. 2.5 [2.4-2.6], P = 0.001) than quartiles 1 through 3 combined, after adjustment for age and 24-hour SBP. These associations were not found in the quartiles of 24-hour SBP. Conclusions: In elderly patients with well ambulatory BP control, higher BP variability but not average ambulatory BP level was associated with cognitive impairment.
  • Kazuomi Kario, the HOPE Asia (Hypertension Cardiovascular Outcome Prevention and Evidence in Asia) Network
    Journal of Clinical Hypertension 20(2) 212-214 2018年2月1日  査読有り
  • Yusuke Oba, Hiroshi Funayama, Motoki Fukutomi, Kazuomi Kario
    International Journal of Cardiovascular Imaging 34(2) 169-170 2018年2月1日  
  • Ikuo Saito, Kazuomi Kario, Toshio Kushiro, Satoshi Teramukai, Mai Yaginuma, Natsuko Zenimura, Yoshihiro Mori, Yasuyuki Okuda, Kazuyuki Shimada
    Clinical and experimental hypertension (New York, N.Y. : 1993) 40(5) 407-413 2018年  査読有り
    The appropriate target blood pressure (BP) in elderly patients with hypertension remains uncertain. We investigated the relationship between morning home systolic blood pressure (MHSBP) during follow-up and cardiovascular (CV) risk in outpatients receiving olmesartan-based treatment aged <75 years (n = 16799) and ≥75 years (n = 4792) in the HONEST study. In the follow-up period (mean 2.02 years), the risk for major CV events was significantly higher in patients with MHSBP ≥155 mmHg compared with <125 mmHg in both age groups in Cox proportional hazards model adjusted for other risk factors and there was no significant difference in trend between the two groups (interaction P = 0.9917 for MHSBP). Hazard ratios for CV events for 1-mmHg increase in MHSBP were similar in patients aged <75 years and in patients aged ≥75 years. The incidence of adverse drug reactions related to excessive BP lowering was lower in patients <75 years than in patients ≥75 years (0.73 vs 1.02%, P = 0.0461). In conclusion, the study suggests even in patients ≥75 years antihypertensive treatment targeting the same MHSBP levels in patients <75 years may be beneficial in reducing CV risk when treatment is tolerated.
  • Kazuomi Kario, Michael Böhm, Felix Mahfoud, Raymond R. Townsend, Michael A. Weber, Manesh Patel, Crystal C. Tyson, Joachim Weil, Tolga Agdirlioglu, Sidney A. Cohen, Martin Fahy, David E. Kandzari
    Circulation 138(15) 1602-1604 2018年  
  • Takeshi Fujiwara, Naoko Tomitani, Keiko Sato, Ayako Okura, Noriyuki Suzuki, Kazuomi Kario
    JOURNAL OF CLINICAL HYPERTENSION 19(11) 1108-1114 2017年11月  査読有り
    The authors sought to determine the association between the blunted morning blood pressure (BP) surge and nocturnal BP dipping of the riser pattern in 501 patients with hypertension enrolled in the ACHIEVE-ONE (Ambulatory Blood Pressure Control and Home Blood Pressure [Morning and Evening] Lowering by the N-Channel Blocker Cilnidipine) trial. The patients' sleep-trough morning BP surge and prewaking surge were calculated and then classified according to their nocturnal systolic BP reduction pattern as extreme dippers, dippers, nondippers, and risers. The prevalence of the riser pattern was significantly higher in both the lowest sleep-trough morning BP surge decile and the prewaking surge decile (blunted surge group) compared with the remaining deciles (56.0% vs 10.4% [P&lt;.0001] and 59.2% vs 10.2% [P&lt;.0001], respectively). The riser pattern was a significant determinant of both blunted sleep-trough morning BP surge (odds ratio, 73.3; P&lt;.0001) and blunted prewaking surge (odds ratio, 14.8; P&lt;.0001). The high prevalence of the riser pattern in patients with blunted morning BP surges may account for the cardiovascular risk previously reported in such patients.
  • Tomoyuki Kabutoya, Yasushi Imai, Satoshi Hoshide, Kazuomi Kario
    JOURNAL OF CLINICAL HYPERTENSION 19(11) 1143-1147 2017年11月  査読有り
    The authors evaluated a new algorithm for detecting atrial fibrillation (AF) using a home blood pressure monitor. Three serial blood pressure values were measured by the monitor in 16 patients with AF and 20 patients with sinus rhythm. The authors defined monitor AF in irregular pulse peak (IPP) 25 as follows: (1) IPP: |interval of pulse peak-the average of the interval of the pulse peak| the average of the interval of the pulse peak x25%; (2) irregular heart beat: beats of IPP total pulse x20%; and (3) monitor AF: two or more irregular heart beats of the three blood pressure measurements. Cutoff IPP values were set at 20% (IPP20) and 15% (IPP15). The monitor's AF specificity was 1.0 in IPP25, IPP20, and IPP15, and its sensitivity was 0.88 in IPP25, 0.94 in IPP20, and 1.0 in IPP15. The new algorithm had high diagnostic accuracy for detecting AF and a low false-positive rate.
  • 小林 久也, 福冨 基城, 船山 大, 小古山 由佳子, 大場 祐輔, 苅尾 七臣
    日本心臓病学会学術集会抄録 65回 O-134 2017年9月  
  • Kazuomi Kario, Naoko Tomitani, Hiroshi Kanegae, Hajime Ishii, Kazuaki Uchiyama, Kayo Yamagiwa, Toshihiko Shiraiwa, Tomohiro Katsuya, Tetsuro Yoshida, Kiyomi Kanda, Shinji Hasegawa, Satoshi Hoshide
    CIRCULATION JOURNAL 81(7) 948-957 2017年7月  査読有り
    Background: Nocturnal blood pressure (BP) is an independent risk factor of cardiovascular events. The NOCTURNE study, a multicenter, randomized controlled trial (RCT) using our recently developed information and communication technology (ICT) nocturnal home BP monitoring (HBPM) device, was performed to compare the nocturnal HBP-lowering effects of differential ARBbased combination therapies in 411 Japanese patients with nocturnal hypertension (HT). Methods and Results: Patients with nocturnal BP = 120/70 mmHg at baseline even under ARB therapy (100 mg irbesartan daily) were enrolled. The ARB/CCB combination therapy (irbesartan 100 mg+amlodipine 5 mg) achieved a significantly greater reduction in nocturnal home systolic BP (primary endpoint) than the ARB/diuretic combination (daily irbesartan 100 mg+trichlormethiazide 1 mg) (-14.4 vs. -10.5 mmHg, P&lt;0.0001), independently of urinary sodium excretion and/or nocturnal BP dipping status. However, the change in nocturnal home systolic BP was comparable among the post-hoc subgroups with higher salt sensitivity (diabetes, chronic kidney disease, and elderly patients). Conclusions: This is the first RCT demonstrating the feasibility of clinical assessment of nocturnal BP by ICT-nocturnal HBPM. The ARB/CCB combination was shown to be superior to ARB/diuretic in patients with uncontrolled nocturnal HT independently of sodium intake, despite the similar impact of the 2 combinations in patients with higher salt sensitivity.
  • Takeshi Fujiwara, Satoshi Hoshide, Masafumi Nishizawa, Takefumi Matsuo, Kazuomi Kario
    JOURNAL OF CLINICAL HYPERTENSION 19(7) 731-739 2017年7月  査読有り
    The authors evaluated the differences between evening home blood pressure (HBP) readings taken before dinner and those taken at bedtime, which were documented in a European and a Japanese guideline, respectively. Forty-eight patients (mean age, 76.4years) measured their evening HBP twice each day (two measurements both before dinner and at bedtime) for 14days. The authors defined the at-bedtime (B) minus the before-dinner (D) systolic HBP as the B-D difference. The mean B-D difference was -8.7mm Hg (P&lt;.001). The depressor effect of bathing was significantly prolonged for 120minutes. The B-D difference with alcohol consumption was significantly greater than that without alcohol. In the linear mixed model analysis, time after bathing 120minutes and alcohol consumption were significantly associated with the B-D difference after adjustment with covariates. There was a marked difference between evening HBP values. When patients' evening HBP is measured according to the guidelines, their daily activities should be considered.
  • Yukako Ogoyama, Nobuhiko Ogata, Shinichi Toriumi, Kazuomi Kario
    Journal of Cardiology Cases 15(6) 201-205 2017年6月1日  査読有り
    A 72-year-old Japanese man was admitted to our hospital for effort chest pain and bilateral claudication. He was diagnosed as having severe ischemic heart disease and chronic bilateral aorto-iliac occlusions (Leriche syndrome) by a diagnostic angiography. Manifest collaterals via bilateral internal thoracic arteries (ITA) supplied sufficient blood flow for his lower limbs. We planned a two-stage operation for both the severe coronary artery disease and peripheral artery occlusive disease. He first underwent endovascular therapy (EVT) for bilateral aorto-iliac occlusion. One month later he underwent coronary artery bypass grafting (CABG) that was carried out for three coronary arteries with bilateral ITAs, also known as the internal thoracic artery, and the gastroepiploic artery. His chest symptoms and claudication were completely relieved and he was discharged uneventfully. We hereby suggest that EVT can be a safe, effective, and minimally invasive treatment to enable the patient to undergo CABG with all arterial grafts. &lt Learning objective: Patients with polyvascular disease are at a high risk for major vascular events. The priority among the revascularizations should be considered based on the less-invasiveness and better long-term patency. Hybrid treatment of EVT and CABG could be one of the choices among such patients.&gt
  • 青山 泰, 大場 祐輔, 甲谷 友幸, 河野 健, 江口 和男, 苅尾 七臣
    栃木県医学会々誌 47 51-53 2017年6月  
  • 渡部 智紀, 甲谷 友幸, 渡辺 裕昭, 佐藤 彰洋, 小森 孝洋, 今井 靖, 三橋 武司, 苅尾 七臣
    心臓 49(2) 103 2017年2月  
    背景:Brugada症候群における心室性不整脈イベントにおいて就寝中や食後などの副交感神経活性との関連性が示唆されている。しかしながら不整脈発生時の状況およびtriggerとなる生活要因に関して、いまだ不明な点も多い。われわれはBrugada症候群における不整脈イベントの発生状況を検討した。方法:当院で植込み型除細動器(ICD)植込み術を施行したBrugada症候群連続32例を対象にICD適切作動を認めた患者背景を検討した。心室性不整脈に対しての適切動作を起こした9例と作動のなかった23例を比較検討した。ICD植込み前を含め心室性不整脈のみられた11例においてイベント発生時の血清カリウム値の関連について検討した。結果:適切作動と習慣性飲酒の関連性について検討した結果、適切作動群において有意に習慣性飲酒を多く認めた(適切作動群89%vs非作動群35%、p=0.002)。適切作動イベントに関す
  • Ishikawa Yukiko, Ishikawa Joji, Ishikawa Shizukiyo, Kario Kazuomi, Kajii Eiji, the Jichi Medical School Cohort, Investigators Group
    Journal of Epidemiology 27(1-2) 8 2017年2月  
  • Komori Takahiro, Eguchi Kazuo, Saito Toshinobu, Hoshide Satoshi, Kario Kazuomi
    Circulation Journal 81(2) 220-+ 2017年2月  
  • 今泉 悠希, 江口 和男, 貝原 俊樹, 苅尾 七臣
    日本内科学会雑誌 106(Suppl.) 204 2017年2月  
  • 今泉 悠希, 江口 和男, 貝原 俊樹, 苅尾 七臣
    日本内科学会雑誌 106(Suppl.) 204 2017年2月  

MISC

 220
  • 石井 正将, 大塚 康弘, 池邉 壮, 中村 太志, 辻田 賢一, 藤田 英雄, 的場 哲哉, 興梠 貴英, 大場 祐輔, 甲谷 友幸, 苅尾 七臣, 清末 有宏, 水野 由子, 中山 雅晴, 宮本 恵宏, 佐藤 寿彦, 永井 良三
    日本循環器学会学術集会抄録集 88回 PJ122-2 2024年3月  
  • Masaki Mogi, Yasuhito Ikegawa, Shunsuke Haga, Satoshi Hoshide, Kazuomi Kario
    Hypertension Research 2024年  
    Hypertension, a disease whose prevalence increases with age, induces pathological conditions of ischemic vascular disorders such as cerebral infarction and myocardial infarction due to accelerated arteriosclerosis and circulatory insufficiency of small arteries and sometimes causes hemorrhagic conditions such as cerebral hemorrhage and ruptured aortic aneurysm. On the other hand, as it is said that aging starts with the blood vessels, impaired blood flow associated with vascular aging is the basis for the development of many pathological conditions, and ischemic changes in target organs associated with vascular disorders result in tissue dysfunction and degeneration, inducing organ hypofunction and dysfunction. Therefore, we hypothesized that hypertension is associated with all age-related vascular diseases, and attempted to review the relationship between hypertension and diseases for which a relationship has not been previously well reported. Following our review, we hope that a collaborative effort to unravel age-related diseases from the perspective of hypertension will be undertaken together with experts in various specialties regarding the relationship of hypertension to all pathological conditions. (Figure presented.).
  • 人見泰弘, 今井靖, 桑原政成, 牧元久樹, 興梠貴英, 相澤健一, 大場祐輔, 甲谷友幸, 苅尾七臣, 的場哲哉, 藤田英雄, 永井良三
    日本臨床薬理学会学術総会抄録集(Web) 44th 2023年  
  • Michiaki Nagai, Takeshi Fujiwara, Kazuomi Kario
    Journal of Clinical Hypertension 23(9) 1681-1683 2021年9月1日  
  • Michiaki Nagai, Kazuomi Kario
    Journal of Clinical Hypertension 23(8) 1526-1528 2021年8月1日  

共同研究・競争的資金等の研究課題

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