Heart and Vessels

, Volume 28, Issue 6, pp 808–813

A rare case of myocardial infarction related to diagnostic intravascular ultrasound

  • Ken Otsuji
  • Fumihiko Kamezaki
  • Shinjo Sonoda
  • Kuninobu Kashiyama
  • Yoshitaka Muraoka
  • Yuki Tsuda
  • Masaru Araki
  • Masahiro Okazaki
  • Masaaki Takeuchi
  • Yutaka Otsuji
Case Report

DOI: 10.1007/s00380-013-0331-4

Cite this article as:
Otsuji, K., Kamezaki, F., Sonoda, S. et al. Heart Vessels (2013) 28: 808. doi:10.1007/s00380-013-0331-4

Abstract

A 71-year-old man underwent intracoronary stent implantation for acute inferior myocardial infarction (MI). Immediately after diagnostic intravascular ultrasound (IVUS) at 8 months’ follow-up, an acute occlusion of the sinus node (SN) artery appeared, which developed sinus arrest with junctional escape rhythm. The serum level of high-sensitivity troponin T (TpT) was markedly elevated on the day after the procedure (2.1–32.5 ng/l), which was indicative of MI related to IVUS. Under continuous intravenous infusion of unfractionated heparin, the escape rhythm changed to lower atrial rhythm on the 4th day, and recovered to sinus rhythm on the 14th day. Coronary angiography (CAG) on 15th day showed a recanalization of the SN artery, but optical coherence tomography identified that disrupted plaque and white thrombus still existed in the ostium of the SN artery. The patient was discharged on maintenance anticoagulation therapy. We hypothesized from this case that IVUS-related myocardial injury may exist without clinical problems. Our retrospective investigation showed that the median levels of high-sensitivity TpT in 20 patients who underwent CAG and subsequent diagnostic IVUS significantly increased from 0.6 (interquartile range 0.3–1.1) to 1.6 (0.7–3.6) ng/l (P < 0.05), suggesting that IVUS may induce very low levels of myocardial injury. In conclusion, we experienced a rare case of IVUS-related MI caused by an acute occlusion of the SN artery. This case reaffirms that we should pay more attention to manipulation of IVUS catheters.

Keywords

ComplicationIntravascular ultrasoundMyocardial infarctionHigh-sensitivity troponin T

Copyright information

© Springer Japan 2013

Authors and Affiliations

  • Ken Otsuji
    • 1
  • Fumihiko Kamezaki
    • 1
  • Shinjo Sonoda
    • 1
  • Kuninobu Kashiyama
    • 1
  • Yoshitaka Muraoka
    • 1
  • Yuki Tsuda
    • 1
  • Masaru Araki
    • 1
  • Masahiro Okazaki
    • 1
  • Masaaki Takeuchi
    • 1
  • Yutaka Otsuji
    • 1
  1. 1.Second Department of Internal Medicine, School of MedicineUniversity of Occupational and Environmental HealthYahatanishi-kuJapan