Korean Circ J.  2019 Dec;49(12):1203-1205. 10.4070/kcj.2019.0178.

Unilateral Pulsus Parvus et Tardus Waveform Discovered during Carotid Artery Doppler Examination: a Clue of Proximal Carotid Artery Occlusion

• Park JH
• Shin JW
• Lee JH

• KMID: 2464303
• DOI: http://doi.org/10.4070/kcj.2019.0178

Abstract

No abstract available.

MeSH Terms

Carotid Arteries*

Figure

• 

  Figure 1 Carotid Doppler ultrasonography shows increased intima-media thickness of the right CCA without a significant stenosis. Doppler examination reveals a delayed slow-rising upstroke and decreased flow velocity (pulsus parvus et tardus, A). Pre-procedural angiogram demonstrates critical narrowing of right CCA (arrows, B). Post-procedural carotid Doppler ultrasonography shows normalized flow velocities of CCA (C) and post-procedural angiogram reveals no stenotic component (arrowheads, D). CCA = common carotid artery.

• 

  Figure 2 (A) Magnetic resonance angiography shows critical narrowing of proximal portion of right CCA (arrows) with diffuse irregular narrowing of right subclavian artery (filled arrowheads) and whole left CCA (open arrowheads). (B) Pre-procedural intravascular ultrasound examination reveals increased carotid IMT and mixed echogenic plaque without an acoustic shadowing. CCA = common carotid artery; IMT = intima-media thickness.

Reference

1. Venkatesulu BP, Mahadevan LS, Aliru ML, et al. Radiation-induced endothelial vascular injury: a review of possible mechanisms. JACC Basic Transl Sci. 2018; 3:563–572.

2. Murros KE, Toole JF. The effect of radiation on carotid arteries. A review article. Arch Neurol. 1989; 46:449–455.

3. Houdart E, Mounayer C, Chapot R, Saint-Maurice JP, Merland JJ. Carotid stenting for radiation-induced stenoses: a report of 7 cases. Stroke. 2001; 32:118–121.

4. Park JH, Lee JH. Carotid artery stenting. Korean Circ J. 2018; 48:97–113.