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Ogura A, Izawa KP, Sato S, Tawa H, Kureha F, Wada M, Kanai M, Kubo I, Yoshikawa R, Matsuda Y. Determinants of Peak Oxygen Uptake at Each Stage of Renal Dysfunction in Patients with Heart Disease. Rev Cardiovasc Med 2022. [DOI: 10.31083/j.rcm2306191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Ogura A, Izawa KP, Tawa H, Kureha F, Wada M, Harada N, Ikeda Y, Kimura K, Kondo N, Kanai M, Kubo I, Yoshikawa R, Matsuda Y. Older phase 2 cardiac rehabilitation patients engaged in gardening maintained physical function during the COVID-19 pandemic. Heart Vessels 2021; 37:77-82. [PMID: 34152441 PMCID: PMC8215626 DOI: 10.1007/s00380-021-01892-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 06/11/2021] [Indexed: 01/09/2023]
Abstract
This study aimed to clarify the effects of gardening on hemodynamic response, rating of perceived exertion (RPE) during exercise, and body weight in patients in whom phase 2 cardiac rehabilitation (CR) was interrupted due to the Coronavirus disease 2019 (COVID-19) pandemic. Among 76 outpatients participating in consecutive phase 2 CR in both periods from March to April and June to July 2020, which were before and after CR interruption, respectively, at Sanda City Hospital were enrolled. The inclusion criterion was outpatients whose CR was interrupted due to COVID-19. Patients under the age of 65 were excluded. We compared the data of hemodynamic response and RPE during exercise on the last day before interruption and the first day after interruption when aerobic exercise was performed at the same exercise intensity in the gardener group and the non-gardener group. Forty-one patients were enrolled in the final analysis. After CR interruption, the gardener group did not show any significant difference in all items, whereas the non-gardener group experienced significant increase in HR (Peak) (p = 0.004) and worsening of the Borg scale scores for both dyspnea and lower extremity fatigue (p = 0.039 and p = 0.009, respectively). Older phase 2 CR patients engaged in gardening did not show any deterioration in hemodynamic response or RPE during exercise, despite CR interruption and refraining from going outside. Gardening may be recommended as one of the activities that can maintain or improve physical function in older phase 2 CR patients during the COVID-19 pandemic.
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Affiliation(s)
- Asami Ogura
- Department of Rehabilitation, Sanda City Hospital, Sanda, Japan
- Department of Public Health, Graduate School of Health Sciences, Kobe University, 10-2 Tomogaoka 7-chome Suma, Kobe, 654-0142, Japan
- Cardiovascular Stroke Renal Project (CRP), Kobe, Japan
| | - Kazuhiro P Izawa
- Department of Public Health, Graduate School of Health Sciences, Kobe University, 10-2 Tomogaoka 7-chome Suma, Kobe, 654-0142, Japan.
- Cardiovascular Stroke Renal Project (CRP), Kobe, Japan.
| | - Hideto Tawa
- Department of Cardiology, Sanda City Hospital, Sanda, Japan
| | - Fumie Kureha
- Department of Cardiology, Sanda City Hospital, Sanda, Japan
| | - Masaaki Wada
- Department of Rehabilitation, Sanda City Hospital, Sanda, Japan
| | - Nobuko Harada
- Department of Nursing, Sanda City Hospital, Sanda, Japan
| | - Yuki Ikeda
- Department of Nursing, Sanda City Hospital, Sanda, Japan
| | - Kaemi Kimura
- Department of Nursing, Sanda City Hospital, Sanda, Japan
| | - Naomi Kondo
- Department of Nursing, Sanda City Hospital, Sanda, Japan
| | - Masashi Kanai
- Department of Public Health, Graduate School of Health Sciences, Kobe University, 10-2 Tomogaoka 7-chome Suma, Kobe, 654-0142, Japan
- Cardiovascular Stroke Renal Project (CRP), Kobe, Japan
| | - Ikko Kubo
- Department of Public Health, Graduate School of Health Sciences, Kobe University, 10-2 Tomogaoka 7-chome Suma, Kobe, 654-0142, Japan
- Cardiovascular Stroke Renal Project (CRP), Kobe, Japan
| | | | - Yuichi Matsuda
- Department of Cardiology, Sanda City Hospital, Sanda, Japan
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Ogura A, Izawa KP, Sato S, Tawa H, Kureha F, Wada M, Kanai M, Kubo I, Brubaker PH, Yoshikawa R, Matsuda Y. Relationship of end-tidal oxygen partial pressure to the determinants of anaerobic threshold in post-myocardial infarction patients. Heart Vessels 2021; 36:1811-1817. [PMID: 33990894 DOI: 10.1007/s00380-021-01870-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 05/07/2021] [Indexed: 10/21/2022]
Abstract
The anaerobic threshold (AT), obtained during cardiopulmonary exercise testing (CPET), is an important prognostic measure and can be used to develop an exercise prescription in patients after a myocardial infarction (post-MI). The purpose of this study was to examine the central and peripheral determinants of AT in post-MI patients end-tidal oxygen partial pressure (PETO2) measures. We performed cardiopulmonary exercise testing (CPET) on 148 consecutively enrolled post-MI patients to determine PETO2 measured at the AT (AT PETO2) and ΔPETO2 (difference between resting PETO2 and AT PETO2). We subsequently investigated the relationship between these measures of PETO2 and the individual AT for each patient. Multivariate linear regression analysis indicated that AT PETO2 and ΔPETO2 were independently and significantly associated with the AT (β = -0.344, p < 0.001 and β = 0.228, p < 0.001, respectively). Furthermore, the independent factors of AT PETO2 were left ventricular ejection fraction (p = 0.005), resting ventilatory equivalent for carbon dioxide (p = 0.002), and resting dead-space gas volume to tidal volume ratio (p < 0.001). However, the independent factors for ΔPETO2 were history of diabetes (p = 0.047), estimated glomerular filtration rate (p = 0.001), and resting systolic blood pressure (p = 0.017). These findings suggested that AT PETO2 was associated with central determinants; whereas, and ΔPETO2 was associated with peripheral determinants, The AT PETO2 and ΔPETO2 provide variable insight regarding the cause of exercise intolerance and can be used to determine appropriate therapies.
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Affiliation(s)
- Asami Ogura
- Department of Rehabilitation, Sanda City Hospital, Sanda, Japan.,Department of Public Health, Graduate School of Health Sciences, Kobe University, 10-2 Tomogaoka 7-chome Suma, Kobe, 654-0142, Japan.,Cardiovascular stroke Renal Project (CRP), Kobe, Japan
| | - Kazuhiro P Izawa
- Department of Public Health, Graduate School of Health Sciences, Kobe University, 10-2 Tomogaoka 7-chome Suma, Kobe, 654-0142, Japan. .,Cardiovascular stroke Renal Project (CRP), Kobe, Japan.
| | - Shinji Sato
- Department of Physical Therapy, Teikyo Heisei University, Tokyo, Japan
| | - Hideto Tawa
- Department of Cardiology, Sanda City Hospital, Sanda, Japan
| | - Fumie Kureha
- Department of Cardiology, Sanda City Hospital, Sanda, Japan
| | - Masaaki Wada
- Department of Rehabilitation, Sanda City Hospital, Sanda, Japan
| | - Masashi Kanai
- Department of Public Health, Graduate School of Health Sciences, Kobe University, 10-2 Tomogaoka 7-chome Suma, Kobe, 654-0142, Japan.,Cardiovascular stroke Renal Project (CRP), Kobe, Japan
| | - Ikko Kubo
- Department of Public Health, Graduate School of Health Sciences, Kobe University, 10-2 Tomogaoka 7-chome Suma, Kobe, 654-0142, Japan.,Cardiovascular stroke Renal Project (CRP), Kobe, Japan
| | - Peter H Brubaker
- Departments of Health and Exercise Science, Wake Forest University, Winston-Salem, NC, USA
| | | | - Yuichi Matsuda
- Department of Cardiology, Sanda City Hospital, Sanda, Japan
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Ogura A, Izawa KP, Tawa H, Kureha F, Wada M, Kanai M, Kubo I, Yoshikawa R, Matsuda Y. Impact of worsening renal function on peak oxygen uptake in patients with acute myocardial infarction. Nephrology (Carlton) 2021; 26:506-512. [PMID: 33605038 DOI: 10.1111/nep.13864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 02/03/2021] [Accepted: 02/05/2021] [Indexed: 11/28/2022]
Abstract
AIM Worsening renal function (WRF) induced by acute myocardial infarction (AMI) is a strong predictor of cardiovascular events and mortality. Peak oxygen uptake may contribute to prognosis in AMI patients with WRF, however, the impact of WRF on peak oxygen uptake is unclear. METHODS Among 154 patients with AMI who underwent emergency percutaneous coronary intervention and participated in phase II cardiac rehabilitation, those who underwent cardiopulmonary exercise testing were consecutively enrolled. WRF was defined as a ≥20% decrease in estimated glomerular filtration rate (eGFR [ml/min/1.73 m2 ]) from admission to that at cardiopulmonary exercise testing. The association of WRF with peak oxygen uptake was evaluated by multivariate regression analysis. The non-WRF group was divided into two subgroups according to eGFR <60/≥60 at cardiopulmonary exercise testing, and eGFR at cardiopulmonary exercise testing and peak oxygen uptake of all three groups were compared. RESULTS Ninety-four patients were enrolled in the final analysis. Multiple linear regression analysis showed that WRF was associated with peak oxygen uptake (p = .003). Comparing the non-WRF group with eGFR at cardiopulmonary exercise testing <60 and the WRF group, although eGFR at cardiopulmonary exercise testing was similar (p = 1.000), peak oxygen uptake in the WRF group was significantly lower (p = .026). CONCLUSION WRF, not eGFR at cardiopulmonary exercise testing was significantly associated with peak oxygen uptake in patients with AMI. This result suggests that when considering the relationship between renal function and peak oxygen uptake, WRF must be taken into account.
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Affiliation(s)
- Asami Ogura
- Department of Rehabilitation, Sanda City Hospital, Sanda, Japan.,Department of Public Health, Graduate School of Health Sciences, Kobe University, Kobe, Japan.,Cardiovascular Stroke Renal Project (CRP), Kobe, Japan
| | - Kazuhiro P Izawa
- Department of Public Health, Graduate School of Health Sciences, Kobe University, Kobe, Japan.,Cardiovascular Stroke Renal Project (CRP), Kobe, Japan
| | - Hideto Tawa
- Department of Cardiology, Sanda City Hospital, Sanda, Japan
| | - Fumie Kureha
- Department of Cardiology, Sanda City Hospital, Sanda, Japan
| | - Masaaki Wada
- Department of Rehabilitation, Sanda City Hospital, Sanda, Japan
| | - Masashi Kanai
- Department of Public Health, Graduate School of Health Sciences, Kobe University, Kobe, Japan.,Cardiovascular Stroke Renal Project (CRP), Kobe, Japan
| | - Ikko Kubo
- Department of Public Health, Graduate School of Health Sciences, Kobe University, Kobe, Japan.,Cardiovascular Stroke Renal Project (CRP), Kobe, Japan
| | | | - Yuichi Matsuda
- Department of Cardiology, Sanda City Hospital, Sanda, Japan
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Ogura A, Izawa KP, Tawa H, Kureha F, Wada M, Harada N, Ikeda Y, Kimura K, Kondo N, Kanai M, Kubo I, Yoshikawa R, Matsuda Y. Impact of the COVID-19 pandemic on phase 2 cardiac rehabilitation patients in Japan. Heart Vessels 2021; 36:1184-1189. [PMID: 33512598 PMCID: PMC7844103 DOI: 10.1007/s00380-021-01783-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 01/08/2021] [Indexed: 11/22/2022]
Abstract
This study aimed to clarify the effects of the interruption of cardiac rehabilitation (CR) and refraining from going outside due to the COVID-19 pandemic on hemodynamic response and rating of perceived exertion (RPE) during exercise including differences by age in phase 2 CR outpatients. Among 76 outpatients participating in consecutive phase 2 CR in both periods from March to April and June to July 2020, which were before and after CR interruption, respectively, at Sanda City Hospital were enrolled. The inclusion criterion was outpatients whose CR was interrupted due to COVID-19. We compared the data of hemodynamic response and RPE during exercise on the last day before interruption and the first day after interruption when aerobic exercise was performed at the same exercise intensity in the < 75 years group and ≥ 75 years group. Fifty-three patients were enrolled in the final analysis. Post-CR interruption, peak heart rate increased significantly (p = 0.009) in the < 75 years group, whereas in the ≥ 75 years group, weight and body mass index decreased significantly (p = 0.009, 0.011, respectively) and Borg scale scores for both dyspnea and lower extremities fatigue worsened significantly (both, p < 0.001). CR interruption and refraining from going outside due to the COVID-19 pandemic affected the hemodynamic response, RPE during exercise and body weight in phase 2 CR outpatients. In particular, patients aged ≥ 75 years appeared to be placed at an increased risk of frailty.
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Affiliation(s)
- Asami Ogura
- Department of Rehabilitation, Sanda City Hospital, Sanda, Japan.,Department of Public Health, Graduate School of Health Sciences, Kobe University, 10-2 Tomogaoka 7-chome Suma, Kobe, 654-0142, Japan.,Cardiovascular Stroke Renal Project (CRP), Kobe, Japan
| | - Kazuhiro P Izawa
- Department of Public Health, Graduate School of Health Sciences, Kobe University, 10-2 Tomogaoka 7-chome Suma, Kobe, 654-0142, Japan. .,Cardiovascular Stroke Renal Project (CRP), Kobe, Japan.
| | - Hideto Tawa
- Department of Cardiology, Sanda City Hospital, Sanda, Japan
| | - Fumie Kureha
- Department of Cardiology, Sanda City Hospital, Sanda, Japan
| | - Masaaki Wada
- Department of Rehabilitation, Sanda City Hospital, Sanda, Japan
| | - Nobuko Harada
- Department of Nursing, Sanda City Hospital, Sanda, Japan
| | - Yuki Ikeda
- Department of Nursing, Sanda City Hospital, Sanda, Japan
| | - Kaemi Kimura
- Department of Nursing, Sanda City Hospital, Sanda, Japan
| | - Naomi Kondo
- Department of Nursing, Sanda City Hospital, Sanda, Japan
| | - Masashi Kanai
- Department of Public Health, Graduate School of Health Sciences, Kobe University, 10-2 Tomogaoka 7-chome Suma, Kobe, 654-0142, Japan.,Cardiovascular Stroke Renal Project (CRP), Kobe, Japan
| | - Ikko Kubo
- Department of Public Health, Graduate School of Health Sciences, Kobe University, 10-2 Tomogaoka 7-chome Suma, Kobe, 654-0142, Japan.,Cardiovascular Stroke Renal Project (CRP), Kobe, Japan
| | | | - Yuichi Matsuda
- Department of Cardiology, Sanda City Hospital, Sanda, Japan
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Kureha F, Satomi-Kobayashi S, Kubo Y, Kinugasa M, Ishida T, Takai Y, Hirata KI, Rikitake Y. Nectin-Like Molecule-5 Regulates Intimal Thickening After Carotid Artery Ligation in Mice. Arterioscler Thromb Vasc Biol 2013; 33:1206-11. [DOI: 10.1161/atvbaha.113.301425] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Fumie Kureha
- From the Division of Cardiovascular Medicine, Department of Internal Medicine (F.K., S.S.-K., M.K., T.I., K.-I.H., Y.R.), Division of Signal Transduction (Y.K., Y.R.), and Division of Molecular and Cellular Biology (Y.T., Y.R.), Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Seimi Satomi-Kobayashi
- From the Division of Cardiovascular Medicine, Department of Internal Medicine (F.K., S.S.-K., M.K., T.I., K.-I.H., Y.R.), Division of Signal Transduction (Y.K., Y.R.), and Division of Molecular and Cellular Biology (Y.T., Y.R.), Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yoshiki Kubo
- From the Division of Cardiovascular Medicine, Department of Internal Medicine (F.K., S.S.-K., M.K., T.I., K.-I.H., Y.R.), Division of Signal Transduction (Y.K., Y.R.), and Division of Molecular and Cellular Biology (Y.T., Y.R.), Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Mitsuo Kinugasa
- From the Division of Cardiovascular Medicine, Department of Internal Medicine (F.K., S.S.-K., M.K., T.I., K.-I.H., Y.R.), Division of Signal Transduction (Y.K., Y.R.), and Division of Molecular and Cellular Biology (Y.T., Y.R.), Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Tatsuro Ishida
- From the Division of Cardiovascular Medicine, Department of Internal Medicine (F.K., S.S.-K., M.K., T.I., K.-I.H., Y.R.), Division of Signal Transduction (Y.K., Y.R.), and Division of Molecular and Cellular Biology (Y.T., Y.R.), Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yoshimi Takai
- From the Division of Cardiovascular Medicine, Department of Internal Medicine (F.K., S.S.-K., M.K., T.I., K.-I.H., Y.R.), Division of Signal Transduction (Y.K., Y.R.), and Division of Molecular and Cellular Biology (Y.T., Y.R.), Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Ken-ichi Hirata
- From the Division of Cardiovascular Medicine, Department of Internal Medicine (F.K., S.S.-K., M.K., T.I., K.-I.H., Y.R.), Division of Signal Transduction (Y.K., Y.R.), and Division of Molecular and Cellular Biology (Y.T., Y.R.), Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yoshiyuki Rikitake
- From the Division of Cardiovascular Medicine, Department of Internal Medicine (F.K., S.S.-K., M.K., T.I., K.-I.H., Y.R.), Division of Signal Transduction (Y.K., Y.R.), and Division of Molecular and Cellular Biology (Y.T., Y.R.), Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
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Kinugasa M, Amano H, Satomi-Kobayashi S, Nakayama K, Miyata M, Kubo Y, Nagamatsu Y, Kurogane Y, Kureha F, Yamana S, Hirata KI, Miyoshi J, Takai Y, Rikitake Y. Necl-5/poliovirus receptor interacts with VEGFR2 and regulates VEGF-induced angiogenesis. Circ Res 2012; 110:716-26. [PMID: 22282193 DOI: 10.1161/circresaha.111.256834] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
RATIONALE Vascular endothelial growth factor (VEGF), a major proangiogenic agent, exerts its proangiogenic action by binding to VEGF receptor 2 (VEGFR2), the activity of which is regulated by direct interactions with other cell surface proteins, including integrin α(V)β(3). However, how the interaction between VEGFR2 and integrin α(V)β(3) is regulated is not clear. OBJECTIVE To investigate whether Necl-5/poliovirus receptor, an immunoglobulin-like molecule that is known to bind integrin α(V)β(3), regulates the interaction between VEGFR2 and integrin α(V)β(3), and to clarify the role of Necl-5 in the VEGF-induced angiogenesis. METHODS AND RESULTS Necl-5-knockout mice displayed no obvious defect in vascular development; however, recovery of blood flow after hindlimb ischemia and the VEGF-induced neovascularization in implanted Matrigel plugs were impaired in Necl-5-knockout mice. To clarify the mechanism of the regulation of angiogenesis by Necl-5, we investigated the roles of Necl-5 in the VEGF-induced angiogenic responses in vitro. Knockdown of Necl-5 by siRNAs in human umbilical vein endothelial cells (HUVECs) inhibited the VEGF-induced capillary-like network formation on Matrigel, migration, and proliferation, and conversely, enhanced apoptosis. Coimmunoprecipitation assays showed the interaction of Necl-5 with VEGFR2, and knockdown of Necl-5 prevented the VEGF-induced interaction of integrin α(V)β(3) with VEGFR2. Knockdown of Necl-5 suppressed the VEGFR2-mediated activation of downstream proangiogenic and survival signals, including Rap1, Akt, and endothelial nitric oxide synthase. CONCLUSIONS These results demonstrate the critical role of Necl-5 in angiogenesis and suggest that Necl-5 may regulate the VEGF-induced angiogenesis by controlling the interaction of VEGFR2 with integrin α(v)β(3), and the VEGFR2-mediated Rap1-Akt signaling pathway.
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Affiliation(s)
- Mitsuo Kinugasa
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
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Tani T, Tanabe K, Kitai T, Yamane T, Kureha F, Katayama M, Tamita K, Kaji S, Oda T, Ehara N, Kinoshita M, Yamamuro A, Morioka S, Kihara Y. Detection of severe stenosis and total occlusion in the left anterior descending coronary artery with transthoracic Doppler echocardiography in the emergency room. Echocardiography 2009; 26:15-20. [PMID: 19125805 DOI: 10.1111/j.1540-8175.2008.00737.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND The noninvasive measurement of coronary flow velocity in the left anterior descending artery (LAD) has recently been realized by using the transthoracic Doppler echocardiography (TTDE). A couple of investigations demonstrated that the diastolic-to-systolic peak velocity ratio (DSVR) by TTDE is a simple and noninvasive method for the detection of severe stenosis in the elective settings. However, the usefulness of DSVR by TTDE in the emergency settings has not been evaluated. OBJECTIVE The purpose of this study was to assess the clinical feasibility to document the LAD flow by TTDE in emergency patients who complained of chest pain. METHODS We studied 49 consecutive patients with acute coronary syndrome who were going to undergo emergency coronary angiography (CAG) for the anatomical diagnosis and the facilitated percutaneous coronary intervention (PCI). Prior to CAG, we recorded the LAD flow by TTDE and measured the diastolic peak velocity (DVp), systolic peak velocity (SVp), and their ratio, DSVR (DVp/SVp) of LAD flow. RESULTS By CAG, the culprit lesions actually resided in the proximal LAD in 36 patients. Among the 36 patients, we detected the Doppler LAD flow in 29. Five out of 7 patients who were unable to detect the LAD flow revealed total occlusions by CAG. DSVR of the LAD is significantly lower in 17 patients who showed severe stenoses (>90%) than those in the rest of 12 patients who did not show such critical stenoses (1.44 +/- 0.16 vs 2.10 +/- 0.26, P < 0.0001). CONCLUSION In the emergency settings, a noninvasive assessment of the LAD flow by TTDE accurately estimates the critical stenotic lesions of the LAD.
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Affiliation(s)
- Tomoko Tani
- Department of Cardiovascular Medicine, Kobe City Medical Center General Hospital, Chuo-ku, Kobe, Japan.
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Tani T, Tanabe K, Kureha F, Katayama M, Kinoshita M, Tamita K, Oda T, Ehara N, Kaji S, Yamamuro A, Morioka S, Kihara Y. Transthoracic Doppler Echocardiographic Assessment of Left Anterior Descending Coronary Artery and Intramyocardial Artery Predicts Left Ventricular Remodeling and Wall-motion Recovery After Acute Myocardial Infarction. J Am Soc Echocardiogr 2007; 20:813-9. [PMID: 17617307 DOI: 10.1016/j.echo.2006.12.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2006] [Indexed: 10/23/2022]
Abstract
BACKGROUND Previous studies reported that a coronary flow velocity (FV) pattern with a rapid diastolic deceleration time (DDT) immediately after percutaneous coronary intervention implies advanced microvascular damage in patients who have experienced an acute myocardial infarction (AMI). METHODS Using transthoracic echocardiography, we recorded the coronary FV in the left anterior descending coronary artery (LAD) and the FV in the intramyocardial artery 2 days after successful percutaneous coronary intervention in 24 patients who had experienced an anterior AMI. We measured the DDT of the LAD and the intramyocardial artery. DDT of the LAD and the intramyocardial artery was detected in the anteroseptal lesion, the wall motion of which revealed severe hypokinesis or akinesis. We performed echocardiography during both the acute phase and 6 months after the AMI. RESULTS Patients were divided into two groups (group A: DDT of the LAD < or = 600 milliseconds [n = 10], group B: DDT of the LAD > or = 600 milliseconds [n = 14]). DDT of the LAD and the intramyocardial artery was significantly shorter for group A than group B (373 +/- 223 vs 786 +/- 105 milliseconds, P < .0001). In the acute phase, there were no significant differences in left ventricular (LV) wall-motion score index (WMSI), LV end-diastolic volume (EDV), or ejection fraction (WMSI: 2.38 +/- 0.24 vs 2.08 +/- 0.58, P = .20; LV EDV: 160 +/- 41 vs 154 +/- 34 mL; ejection fraction: 45 +/- 11 vs 46 +/- 5%). However, WMSI and LV EDV in group A were significantly greater than in group B (WMSI: 2.47 +/- 0.16 vs 1.84 +/- 0.57, P = .01; LV EDV: 198 +/- 28 vs 132 +/- 37 mL, P = .0004) and the ejection fraction in group A was significantly lower than in group B (38 +/- 9 vs 55 +/- 10%, P = .001) during the chronic phase. CONCLUSIONS In patients who had experienced an anterior AMI, we could predict wall-motion recovery of the infarcted area by using the coronary FV of the LAD and FV of the intramyocardial artery.
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Affiliation(s)
- Tomoko Tani
- Division of Cardiology, Kobe General Hospital, Kobe, Japan.
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