EN
Objective: In patients with hereditary hemorrhagic
telangiectasia (HHT), pulmonary arteriovenous
malformations (PAVMs) can cause serious neurological
complications. Our aim was to evaluate the potential of
contrast-enhanced Doppler ultrasound (CE-US) of the
common carotid artery as a screening test for detection
of PAVMs. Methods: A total of 124 consecutive patients
with HHT or a positive family history underwent screening
for PAVMs with CE-US and thoracic contrast-enhanced
magnetic resonance angiography (CE-MRA). CE-US was
performed after receiving (D)-galactose microparticulate,
and CE-MRA with gadobenate dimeglumine. Twenty-five
patients with confirmed PAVMs were referred to conventional
pulmonary catheter angiography (PA). Findings
on CE-US and CE-MRA were evaluated using contingency
tables and McNemar’s test. Results: Using CE-MRA as the
reference test, CE-US had a sensitivity of 100%, a specificity
of 87%, and a negative predictive value of 100%.
In 25 patients who underwent PA, PAVMs that had been
diagnosed on CE-US and CE-MRA were confirmed. Of the
PAVMs detected by CE-MRA, 24% were not identified on
PA. Conclusion: CE-US is a simple, minimally invasive
screening method that can easily be performed in different settings. CE-US can predict PAVMs with high probability
of success. CE-US may be a simple alternative to transthoracic
echocardiography in the assessment of PAVMs in
certain HHT-patients.