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Wu PW, Tsay PK, Sun Z, Peng SJ, Lee CY, Hsu MY, Ko YS, Hsieh IC, Wen MS, Wan YL. Added Value of Computed Tomography Virtual Intravascular Endoscopy in the Evaluation of Coronary Arteries with Stents or Plaques. Diagnostics (Basel) 2022; 12:diagnostics12020390. [PMID: 35204481 PMCID: PMC8871267 DOI: 10.3390/diagnostics12020390] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 01/16/2022] [Accepted: 01/31/2022] [Indexed: 11/16/2022] Open
Abstract
Coronary computed tomography angiography (CCTA) is a widely used imaging modality for diagnosing coronary artery disease (CAD) but is limited by a high false positive rate when evaluating coronary arteries with stents and heavy calcifications. Virtual intravascular endoscopy (VIE) images generated from CCTA can be used to qualitatively assess the vascular lumen and might be helpful for overcoming this challenge. In this study, one hundred subjects with coronary stents underwent both CCTA and invasive coronary angiography (ICA). A total of 902 vessel segments were analyzed using CCTA and VIE. The vessel segments were first analyzed on CCTA alone. Then, using VIE, the segments were classified qualitatively as either negative or positive for in-stent restenosis (ISR) or CAD. These results were compared, using ICA as the reference, to determine the added diagnostic value of VIE. Of the 902 analyzed vessel segments, CCTA/VIE had sensitivity, specificity, accuracy, positive predictive value, and negative predictive value (shown in %) of 93.9/90.2, 96.2/98.2, 96.0/97.7, 70.0/83.1, and 99.4/99.0, respectively, in diagnosing ISR or CAD, with significantly improved specificity (p = 0.025), accuracy (p = 0.046), and positive predictive value (p = 0.047). VIE can be a helpful addition to CCTA when evaluating coronary arteries.
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Affiliation(s)
- Patricia Wanping Wu
- Department of Medical Imaging and Intervention, Linkou Chang Gung Memorial Hospital, College of Medicine, Chang Gung University, Taoyuan City 333423, Taiwan; (P.W.W.); (M.-Y.H.)
| | - Pei-Kwei Tsay
- Department of Public Health and Center of Biostatistics, College of Medicine, Chang Gung University, Taoyuan City 333323, Taiwan;
| | - Zhonghua Sun
- Discipline of Medical Radiation Science, Curtin Medical School, Curtin University, Bentley, WA 6102, Australia;
| | - Syu-Jyun Peng
- Professional Master Program in Artificial Intelligence in Medicine, College of Medicine, Taipei Medical University, Taipei City 110301, Taiwan;
| | - Chia-Yen Lee
- Department of Electrical Engineering, National United University, Miaoli 360302, Taiwan;
| | - Ming-Yi Hsu
- Department of Medical Imaging and Intervention, Linkou Chang Gung Memorial Hospital, College of Medicine, Chang Gung University, Taoyuan City 333423, Taiwan; (P.W.W.); (M.-Y.H.)
| | - Yu-Shien Ko
- Department of Cardiology, Linkou Chang Gung Memorial Hospital, College of Medicine, Chang Gung University, Taoyuan City 333423, Taiwan; (Y.-S.K.); (I.-C.H.); (M.-S.W.)
| | - I-Chang Hsieh
- Department of Cardiology, Linkou Chang Gung Memorial Hospital, College of Medicine, Chang Gung University, Taoyuan City 333423, Taiwan; (Y.-S.K.); (I.-C.H.); (M.-S.W.)
| | - Ming-Shien Wen
- Department of Cardiology, Linkou Chang Gung Memorial Hospital, College of Medicine, Chang Gung University, Taoyuan City 333423, Taiwan; (Y.-S.K.); (I.-C.H.); (M.-S.W.)
| | - Yung-Liang Wan
- Department of Medical Imaging and Intervention, Linkou Chang Gung Memorial Hospital, College of Medicine, Chang Gung University, Taoyuan City 333423, Taiwan; (P.W.W.); (M.-Y.H.)
- Correspondence: ; Tel.: +886-3-3281200 (ext. 2575)
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Impact of surgeon experience on the rate of blood transfusion in off-pump coronary artery bypass. J Formos Med Assoc 2016; 115:145-51. [PMID: 26776760 DOI: 10.1016/j.jfma.2015.11.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Revised: 11/17/2015] [Accepted: 11/21/2015] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND/PURPOSE Off-pump coronary artery bypass (OPCAB) reduces the rate of blood transfusion. No studies have focused on the effect of surgeon experience on the transfusion rate. We sought to assess the transfusion rate in OPCAB and to evaluate the effect of surgeon experience. METHODS Retrospective review of 1055 consecutive patients undergoing OPCAB between 2000 and 2012. Patients were divided into tripartites by the year of operation (2000-2004, 2005-2008, and 2009-2012). Surgeon experience was evaluated with revascularization index and conversion rate. RESULTS Mode of intervention was elective in 768, urgency in 185, and emergency in 102 patients (10%). Blood transfusion was associated with increased rates of hospital mortality and sternal wound/bloodstream infections. Revascularization index was 1.22 ± 0.29 per patient and increased over time, from 1.05 ± 0.21 in 2000-2004 to 1.39 ± 0.26 in 2009-2012. Conversion rate was 10% and decreased over time, from 17% in 2000-2004 to 6% in 2009-2012. The average rate of blood transfusion was 58% and decreased over time, from 74% in 2000-2004 to 41% in 2009-2012. Rate of red blood cell transfusion was 56% and decreased from 72% in 2000-2004 to 40% in 2009-2012. Rate of platelet transfusion was 21% and decreased from 25% in 2000-2004 to 15% in 2009-2012.The most significant decrease in the transfusion rate was observed in nonemergency cases. CONCLUSION Surgeon experience reduced the need of blood transfusion after OPCAB. Increasing surgeon experience was associated with a 33% reduction in blood transfusion rate.
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Liu K, Hsieh C, Zhuang N, Gao Y, Li Z, Ren X, Yang L, Zhang J, Budoff MJ, Lu B. Current utilization of cardiac computed tomography in mainland China: A national survey. J Cardiovasc Comput Tomogr 2015; 10:76-81. [PMID: 26699712 DOI: 10.1016/j.jcct.2015.11.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 11/09/2015] [Accepted: 11/24/2015] [Indexed: 12/31/2022]
Abstract
BACKGROUND Surveys that describe the utilization of cardiac CT are available for the United States, Germany, and Taiwan, but not mainland China. OBJECTIVES To analyze the clinical utilization of cardiac CT in mainland China. METHODS A 25-item questionnaire was created and 240 tertiary hospitals were randomly selected to participate. Survey data were collected and confirmed by email as well as phone interviews. RESULTS In total, 237 (99%) hospitals consented to this survey, but 85 were excluded because of lack of cardiac CT patient volume or advanced technology. Finally, 152 (64%) questionnaires were available for analysis. Median patient volume was 1,037 patients (range: 150-8,072) annually. The most common clinical indications for coronary CT angiography were exclusion of coronary artery disease in patients with low to intermediate pretest likelihood, asymptomatic individuals with cardiovascular risk factors, and follow-up after coronary bypass grafting. The median heart rate threshold for beta blocker administration was >70 beats/min; most centers (86%) used sublingual nitroglycerin. Prospectively ECG triggered acquisition was the predominant technique in 44% of hospitals. Most (59%) providers adjusted the tube current to the body mass, but few (16%) adjusted the contrast injection rate. Per case, the mean examination duration was 14.2 min; post-processing time 13.6 min; and reporting time 18.0 min. CONCLUSIONS Cardiac CT is widely established in clinical practice in mainland China but there is a need for more uniform standards regarding performance and clinical utilization.
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Affiliation(s)
- Kun Liu
- Department of Radiologic Imaging, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Center of Cardiovascular Diseases, 167 Beilishi Road, Beijing 100037, China
| | - Christopher Hsieh
- Olin Business School, Washington University in St. Louis, 1 Brookings Drive, St. Louis 63130, MO, United States
| | - Nan Zhuang
- Institute of Medical Information and Library, Chinese Academy of Medical Sciences and Peking Union Medical College, 5 Dongdansantiao Street, Beijing 100005, China
| | - Yang Gao
- Department of Radiologic Imaging, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Center of Cardiovascular Diseases, 167 Beilishi Road, Beijing 100037, China
| | - Zhennan Li
- Department of Radiologic Imaging, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Center of Cardiovascular Diseases, 167 Beilishi Road, Beijing 100037, China
| | - Xinshuang Ren
- Department of Radiologic Imaging, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Center of Cardiovascular Diseases, 167 Beilishi Road, Beijing 100037, China
| | - Li Yang
- Department of Radiology, PLA General Hospital, 28 Fuxing Road, Beijing 100853, China
| | - Jiayin Zhang
- Institute of Diagnostic and Interventional Radiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai 200233, China
| | - Matthew Jay Budoff
- Division of Cardiology, Los Angeles Biomedical Research Institute at Harbor-UCLA, 1124 West Carson Street, Torrance 90502, CA, United States
| | - Bin Lu
- Department of Radiologic Imaging, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Center of Cardiovascular Diseases, 167 Beilishi Road, Beijing 100037, China.
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