Synapse
⌘+K
Synapse
PulseExploreClubsResearchersJournals
Instagram
HomeClubsExplore
April 1, 1983American Journal of Roentgenology

Clinical value of coronary bypass graft evaluation with CT

View Full Paper
Ask AI
Bookmark
Share

Why the study?

Does dynamic CT accurately assess coronary bypass graft patency compared to selective angiography in patients with recurrent cardiac symptoms after graft surgery?

Population

26 patients (47 grafts) with recurrent cardiac symptoms after coronary artery bypass graft surgery

Comparison

Dynamic computed tomography (CT) vs Selective angiography

Design

Cross-sectional

Authors

JGJ. David GodwinRCRM CaliffMKMelvyn Korobkin

Discussion

Loading...

Member takes

Overview

CT may miss critical lesions in symptomatic post-CABG patients; leaves open whether protocol advances improve accuracy.

Key Points

  • To determine the diagnostic accuracy and clinical utility of dynamic computed tomography (CT) in evaluating coronary bypass graft patency among symptomatic post-surgical patients.
  • Performed dynamic CT imaging on N=26 patients with recurrent cardiac symptoms following bypass surgery, examining 47 total grafts.
  • Compared CT diagnostic accuracy against invasive selective coronary angiography as the reference standard.
  • Dynamic CT demonstrated an overall diagnostic accuracy of 79% for identifying bypass graft patency.
  • CT failed to detect high-grade graft stenoses observed in 4 patients and missed significant progression of native coronary artery atherosclerosis present in 50% of patients.

Structured PICO

Does dynamic CT accurately assess coronary bypass graft patency compared to selective angiography in patients with recurrent cardiac symptoms after graft surgery?

P
Population
26 patients (47 grafts) with recurrent cardiac symptoms after coronary artery bypass graft surgery
I
Intervention
Dynamic computed tomography (CT)
C
Comparator
Selective angiography
O
Outcome
Accuracy of graft patency assessmentsurrogate

Dynamic CT is insufficiently detailed for evaluating symptomatic patients after CABG due to its inability to detect high-grade graft stenoses and native coronary disease progression.

Limitations

  • Inability to detect high-grade stenoses in grafts
  • Inability to detect progression of atherosclerosis in native coronary arteries
  • Technical problems with CT scanning

Cite This Study

Godwin et al. (1983) studied this question.

synapsesocial.com/papers/6a705db978a11c550e0a3f4chttps://doi.org/10.2214/ajr.140.4.649
View Full Paper
Ask AI
Bookmark
Share

Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Evaluation of Coronary Artery Bypass Graft Patency with Computed Tomography1981 · 2 citations
  2. 2Computed tomographic assessment of coronary artery bypass grafts.1984 · 16 citations
  3. 3Noninvasive evaluation of aortocoronary bypass graft patency by contrast-enhanced computed tomography. Incrementation mode and dynamic mode.1984 · 5 citations
  4. 4Evaluation of coronary artery bypass grafts using helical scan computed tomography1999 · 21 citations
  5. 5Coronary Artery Bypass Grafts: Assessment with Multidetector CT in the Early and Late Postoperative Settings2005 · 95 citations