scholarly journals COMPARATIVE STUDY OF TREADMILL STRESS TEST(TMT) WITH INVASIVE CORONARY ANGIOGRAPHY (CAG) IN PATIENTS WITH SUSPECTED CORONARY ARTERY DISEASE

2020 ◽  
pp. 21-24
Author(s):  
Ameta Deepak ◽  
Sharma Mukesh ◽  
Singh Pal Shalinder ◽  
Yadav Sushil
Keyword(s):  
Chest Pain ◽  
Coronary Angiography ◽  
Stress Test ◽  
Invasive Coronary Angiography ◽  
Suspected Coronary Artery Disease ◽  
Atypical Chest Pain ◽  
Obstructive Lesion ◽  
Important Diagnostic Tool ◽  
Treadmill Stress Test ◽  
Treadmill Stress

Background- There are few studies which compared invasive coronary angiography (CAG) in patients presenting with chest pain (atypical, probably ischemic) in outpatient department with negative or inconclusive treadmill stress test (TMT). Objective- To assess CAG findings in patient with suspected iscemic chest pain, with negative or inconclusive TMT. Methods- Patients with chest pain (atypical, probably ischemic) underwent TMT and classified as TMT negative or inconclusive. These patients underwent CAG and findings were analysed. Results - 50 patients completed the study protocol. Of these 50 patients who underwent TMT, 31 (62%) were TMT negative and 19 (38%) were TMT inconclusive. In TMT negative group CAG showed obstructive lesion in 6(19.4%), and non obstructive lesion in 25(80.6%). In TMT inconclusive group CAG showed obstructive lesion in 11(57.8%), while non obstructive lesion in 8(42.2%). Conclusion-In patients with atypical chest pain with negative or inconclusive TMT with suspicion of coronary ischemia CAG provides an important diagnostic tool for assessing, especially with TMT inconclusive group.

scholarly journals COMPARATIVE STUDY OF COMPUTERIZED TOMOGRAPHY CORONARY ANGIOGRAPHY (CTCA) VS.TREADMILL STRESS TEST (TMT) IN PATIENTS WITH SUSPECTED CORONARY ARTERY DISEASE

2020 ◽  
pp. 1-5
Author(s):  
Ameta Deepak ◽  
Sharma Mukesh ◽  
Singh Pal Shalinder ◽  
Yadav Sushil
Keyword(s):  
Coronary Artery Disease ◽  
Chest Pain ◽  
Coronary Artery ◽  
Stress Test ◽  
Suspected Coronary Artery Disease ◽  
Negative Group ◽  
Atypical Chest Pain ◽  
Obstructive Lesion ◽  
Important Diagnostic Tool ◽  
Artery Disease

Background: There are few studies that compared CTCA in patients presenting with chest pain, probably ischaemic (i.e., atypical) with negative or inconclusive TMT in outpatient department. Objective: To assess 64-slice CTCA findings in patients with suspected ischaemic chest pain and negative or inconclusive TMT. Methodology: Enrolled patients underwent TMT and classified as TMT negative or inconclusive patients. These patients underwent CTCA and findings were analysed. Results: 50 patients completed the study protocol. Of these, 31 (62%) were TMT negative and 19 (38%) were TMT inconclusive. CTCA showed obstructive CAD in 19 (38%) patients; 7 (36%) with negative TMT and 12 (63%) with inconclusive TMT. Overall, CTCA was more predictive of diagnosing obstructive lesion in TMT inconclusive group as compared to TMT negative group. Conclusion: In patients with atypical chest pain with negative or non-diagnostic TMT, CTCA provides an important diagnostic tool for rapid triaging of such patients.

scholarly journals The Ordering of Medical Things: Medical Practices and Complexity

2021 ◽  
Author(s):  
◽  
John Gardner
Keyword(s):  
Chest Pain ◽  
Stress Test ◽  
Actor Network Theory ◽  
The Body ◽  
Single Individual ◽  
Medical Practices ◽  
Making Sense ◽  
Video And Audio ◽  
Treadmill Stress Test ◽  
Treadmill Stress

<p>This project is an investigation into medicine in action. The aim is to understand how medical interactions generate order via the diagnosis of disease; how the patient, the body, and illness are made intelligible, and how particular courses of action are decided upon as a result. Using video and audio data supplied by the Applied Research on Communication in Health (ARCH) research team, this project follows Simon, a middle aged, Caucasian male with chest pain, as he participates in consultations with his GP and cardiologist, and as he undergoes a cardio treadmill-stress test. This project argues for adopting an Actor-Network theory (ANT) based approach to studying interactions. Unlike more traditional sociology approaches, this project considers the role of non-human objects in interaction. Non-human objects are often key actors in the interactions that provide the world with a sense of order. I will provide an epistemological justification for ANT's key premises and outline the method that these premises entail. Following three interactions, this project illustrates that the principal actors involved in producing intelligibility varies. In the GP consultation, the GP and Simon were principal actors in rendering chest pain intelligible. In the treadmill stress test, the material instrumentation, carefully aligned with the Simon's body by the cardiologist, was vital to ensuring a particular account of the heart was produced. Simon was little more than a compliant body in this interaction. In the final interaction, the cardiologist was the principal actor in making sense of these accounts of chest pain and the potentially conflicting picture of the "healthy" heart. The cardiologist suggests that the account of the heart produced by the treadmill-stress test may be flawed, and encourages Simon to self-monitor and self-regulate. I will argue that the uncertainty generated by conflicting accounts is common to medical practices. Medical professionals respond to this by encouraging individuals to monitor and reduce risk. By adopting the ANT approach, I found that the patient and his body are sometimes intelligible as somatic entities, sometimes as an expressive, accounting agent, and sometimes as a self-responsible individual. These various renditions hold together as a being a single individual "Simon".</p>

scholarly journals Correlation of Treadmill stress test with coronary angiography in patients with coronary artery disease using Selzer's criteria

2015 ◽  
Vol 67 ◽  
pp. S24
Author(s):  
Chetan Sharma ◽  
C.P. Tripathi ◽  
Madhavi Tripathi ◽  
R.K. Pandey ◽  
Naveed Bisht ◽  
...  
Keyword(s):  
Coronary Artery Disease ◽  
Coronary Artery ◽  
Coronary Angiography ◽  
Stress Test ◽  
Artery Disease ◽  
Treadmill Stress Test ◽  
Treadmill Stress

Abstract 323: Assessment of Coronary Artery Calcium on Routine Non-gated Chest Computed Tomography to Risk Stratify Patients Presenting With Chest Pain

2020 ◽  
Vol 13 (Suppl_1) ◽  
Author(s):  
Richard Vautier ◽  
Dae Hyun Lee ◽  
Yasmin Ayoubi ◽  
Paula Hernandez Burgos ◽  
Fahad Hawk ◽  
...  
Keyword(s):  
Chest Pain ◽  
Coronary Artery ◽  
Coronary Angiography ◽  
Predictive Value ◽  
Coronary Artery Stenosis ◽  
Stress Test ◽  
Invasive Coronary Angiography ◽  
Chest Ct ◽  
Cardiac Stress ◽  
Risk Patients

Background: Coronary artery calcium (CAC) scoring is an important tool for cardiovascular risk stratification. CAC scoring in both asymptomatic and symptomatic, low-intermediate risk patients has also shown prognostic utility and has a high negative predictive value for obstructive coronary artery disease (CAD). Patients who present with chest pain frequently undergo non-gated chest computed tomography (CT) to evaluate for non-cardiac etiologies. In fact, several studies have demonstrated that a CAC score from a non-gated chest CT correlates well with a dedicated calcium-scoring CT. However, the predictive value on CAD through assessing the presence (CAC>0) or the absence of calcium (CAC=0) detected on non-gated chest CT in patients presenting with chest pain is unknown. Methods: Low-intermediate risk patients (n=92) presenting to the emergency department with chest pain who underwent non-gated chest CT and were subsequently evaluated with either a cardiac stress test or invasive coronary angiography were included. Dichotomous CAC was assessed in a blinded fashion and classified as CAC=0 or CAC>0. Obstructive CAD was defined as either: ischemia on stress testing or any coronary artery stenosis greater than 70% (left main coronary artery stenosis greater than 50%) on invasive coronary angiography. Results: CAC=0 on non-gated chest CT was found in 59.2% (n=42). Patients with CAC=0 had a significantly lower age and TIMI score compared to patients with a CAC>0. (p<0.01 ) Patients with a CAC>0 were found to more likely have obstructive CAD on subsequent testing: cardiac stress test (Likelihood ratio[LR]:6.42, p=0.022); and invasive angiography (LR:12.46, p=0.002). There were no patients with a CAC=0 that were found to have obstructive CAD on invasive coronary angiography, resulting in a 100% sensitivity and 100% negative predictive value. Conclusion: Patient who presents with chest pain frequently undergo evaluation with a non-gated chest CT to assess non-cardiac etiologies. Exclusion of CAC on non-gated chest CT may be useful as an adjunct for further risk stratification to avoid potential adverse events and cost associated with further testing.

scholarly journals The Ordering of Medical Things: Medical Practices and Complexity

2021 ◽  
Author(s):  
◽  
John Gardner
Keyword(s):  
Chest Pain ◽  
Stress Test ◽  
Actor Network Theory ◽  
The Body ◽  
Single Individual ◽  
Medical Practices ◽  
Making Sense ◽  
Video And Audio ◽  
Treadmill Stress Test ◽  
Treadmill Stress

<p>This project is an investigation into medicine in action. The aim is to understand how medical interactions generate order via the diagnosis of disease; how the patient, the body, and illness are made intelligible, and how particular courses of action are decided upon as a result. Using video and audio data supplied by the Applied Research on Communication in Health (ARCH) research team, this project follows Simon, a middle aged, Caucasian male with chest pain, as he participates in consultations with his GP and cardiologist, and as he undergoes a cardio treadmill-stress test. This project argues for adopting an Actor-Network theory (ANT) based approach to studying interactions. Unlike more traditional sociology approaches, this project considers the role of non-human objects in interaction. Non-human objects are often key actors in the interactions that provide the world with a sense of order. I will provide an epistemological justification for ANT's key premises and outline the method that these premises entail. Following three interactions, this project illustrates that the principal actors involved in producing intelligibility varies. In the GP consultation, the GP and Simon were principal actors in rendering chest pain intelligible. In the treadmill stress test, the material instrumentation, carefully aligned with the Simon's body by the cardiologist, was vital to ensuring a particular account of the heart was produced. Simon was little more than a compliant body in this interaction. In the final interaction, the cardiologist was the principal actor in making sense of these accounts of chest pain and the potentially conflicting picture of the "healthy" heart. The cardiologist suggests that the account of the heart produced by the treadmill-stress test may be flawed, and encourages Simon to self-monitor and self-regulate. I will argue that the uncertainty generated by conflicting accounts is common to medical practices. Medical professionals respond to this by encouraging individuals to monitor and reduce risk. By adopting the ANT approach, I found that the patient and his body are sometimes intelligible as somatic entities, sometimes as an expressive, accounting agent, and sometimes as a self-responsible individual. These various renditions hold together as a being a single individual "Simon".</p>

scholarly journals Correlation of Treadmill Stress Test with Coronary Angiography to Predict Coronary Artery Disease in Males versus Females

2017 ◽  
Vol 02 (03) ◽  
pp. 025-028
Author(s):  
B. Maneesh Kumar ◽  
Edavaluru Bhuvaneshwari
Keyword(s):  
Coronary Artery Disease ◽  
Coronary Artery ◽  
Coronary Angiography ◽  
High Probability ◽  
Stress Test ◽  
Inducible Ischemia ◽  
Male Sex ◽  
Artery Disease ◽  
Treadmill Stress Test ◽  
Treadmill Stress

Background Treadmill stress test (TMT) is the most commonly performed stress test for diagnosis of coronary artery disease (CAD) in outpatient setting. The present study was conducted to find correlation of TMT with coronary angiography (CAG) in males versus female patients. Methods Total 422 patients who had undergone CAG and TMT were enrolled in present study. TMT test was done using Bruce protocol, and results were classified as inconclusive, low, intermediate, and high probability for inducible ischemia. Results Of 422 patients enrolled in the present study, 290 (69%) were males and 132 (31%) were females. Clinical presentation was angina on exertion CCS class II–III in 302 (71.6%) patients and angina equivalent in 124 (29.4%) patients. Out of these, 211 (50.2%) were diabetic and 308 (72.9%) were hypertensive. TMT was inconclusive, low, intermediate, and high probability for inducible ischemia in 35 (8.2%), 40 (9.7%), 19 (4.5%), and 328 (77.7%) patients, respectively. CAGs were normal in 149 (35.4%) patients and abnormal in 273 (64.6%) patients. Out of 328 patients with strongly positive TMT, 104 (31.7%) had normal coronaries, 56 (17%) had mild CAD, while 75 (22.8%) had SVD. LMCA disease, DVD, and TVD were found in 5 (1.5%), 48 (14.6%), and 40 (12.1%) patients, respectively. Of 132 female patients, 70 (53%) were found to have CAD and 62 (47%) had normal coronaries on CAG. Of 290 males, 241(83.1%) were found to have CAD and 49 (16.8%) had normal coronaries on CAG. Positive predictive value (PPV) in females was 53% and in males was 83%. Subgroup analysis showed that if there was high-probability TMT along with older age (p < 0.00), male sex (p < 0.01), and diabetes (p < 0.00), chances of having CAD were more. Conclusion PPV of positive TMT in female is 53% and in male is 83%. High-probability TMT along with the older age, male sex, and presence of diabetes mellitus (DM) makes the probability of having CAD is high.

scholarly journals Detailed Precision of Computed Tomography Angiography Compared to Invasive Angiography in Different Coronary Vessels: Overestimate, Underestimate, or Concordance?

2018 ◽  
Vol 39 (1) ◽  
pp. 7-14
Author(s):  
TM Haykal ◽  
Elen Elen ◽  
Celly A. Atmadikoesoemah ◽  
Abhirama N Putra ◽  
Andrew Parlautan ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Quantitative Analysis ◽  
Coronary Angiography ◽  
Computed Tomography Angiography ◽  
Invasive Coronary Angiography ◽  
Coronary Vessels ◽  
Obstructive Lesion ◽  
Stenosis Quantification ◽  
Classification Quantitative ◽  
Sensitivity Specificity

Background: Quantitative analysis of stenosis lesions by Computed Tomography angiography (CTA) show good correlation with Invasive Coronary Angiography (ICA) examination. However, detailed precision whether CTA overestimate or underestimate have not been explored thoroughly. Objectives: This research is performed to analyze the precision of CTA compared to ICA. Materials & Methods: There are 195 patients examined by both CTA and ICA from October 2014 until December 2015 in our hospital. CTA was analyzed by a team of cardiovascular imaging cardiologists. Quantitative grading of stenosis was determined visually using 2014 Society of Cardiovascular Computed Tomography (SCCT) guidelines classification. Quantitative measurement of stenosis during ICA was classified with the same criteria so that it can be comparable. The final comparison of both tests was clas­sified as concordance, overestimate and underestimate. Results: Lesion of stenosis was found in 573 coronary vessels. Coronary vessels are significantly associated with detailed precision of quantitative analysis comparison in CTA and ICA. LM coronary stenosis quantification from CTA is predominantly overestimate (concordance in 6% vessels and overestimate in 75.9% vessels), while stenosis analysis by CTA in other major coronary vessels is spread without conspicuous domination (p<0.001). Sensitivity, specificity, PPV, and NPV of CTA to detect obstructive lesion (stenosis ≥ 50%) found by ICA is 81.4%, 80.4%, 73.9%, and 86.3%, respectively (780 vessels). Conclusions: Degree of stenosis in LM is predominantly overestimate by CTA. The precision of stenosis grading in CTA in different coronary vessels is not the same.   Abstrak Latar Belakang: Analisis kuantitatif lesi stenosis pada pembuluh koroner menggunakan modalitas Computed Tomography Angiography (CTA) memiliki korelasi yang baik dengan pemeriksaan Invasive Coronary Angiography (ICA). Namun, presisi CTA terhadap ICA masih belum ter­eksplorasi dengan baik. Terutama dari sisi apakah CTA menunjukkan presisi yang overestimate atau underestimate. Tujuan: Penelitian ini dilakukan untuk menganalisis presisi CTA terhadap ICA dalam mendeteksi lesi stenosis pada pembuluh koroner. Metode Penelitian: Terdapat 195 pasien yang diperiksa menggunakan CTA dan ICA sejak Oktober 2014 hingga Desember 2015 di RS Jan­tung dan Pembuluh Darah Harapan Kita, Jakarta. Analisis kuantitatif CTA dilakukan oleh tim kardiolog pencitraan kardiovaskular. Klasifikasi derajat stenosis ditentukan secara visual menggunakan pedoman dari Society of Cardiovascular Computed Tomography (SCCT) 2014. Analisis kuantitatif lesi stenosis dari pemeriksaan ICA diklasifikasikan menggunakan pedoman yang sama sehingga keduanya dapat diperbandingkan. Data hasil perbandingan kedua modalitas diklasifikasikan sebagai concordance, overestimate dan underestimate. Hasil Penelitian: Lesi stenosis ditemukan pada 573 pembuluh koroner. Pembuluh koroner yang berbeda secara signifikan berhubungan dengan perbandingan klasifikasi analisis semi-kuantitatif CTA dan ICA. Pembuluh koroner LM terutama menunjukkan lesi dengan kategori overestimate (75.9%). Sementara analisis stenosis pada pembuluh koroner lainnya tidak menunjukkan perbedaan yang mencolok (p < 0,001). Sensitivitas, spesifisitas, PPV, dan NPV CTA dalam mendeteksi lesi koroner obstruktif (stenosis ≥50%) terhadap ICA adalah sebesar 81.4%, 80.4%, 73.9%, dan 86.3% (780 pembuluh kroner). Kesimpulan: Analisis stenosis semi-kuantitatif pada LM terutama adalah overestimate berdasarkan pemeriksaan CTA. Presisi analisis perband­ingan derajat stenosis CT angiografi pada setiap pembuluh koroner tidak sama.

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