BACKGROUND AND PURPOSE: The inter-relation between the size of patent foramen ovale (PFO) by transesophageal echocardiography (TEE) and the amount of microembolic signals (MES) on transcranial doppler (TCD) is still not determined. METHODS: The study group comprised of 104 patients with first-ever ischaemic stroke or transient ischemic attack (TIA). Three groups were formed according to the amount of MES on TCD: a small amount of MES (0-10 MES); a moderate amount of MES (countable MES higher than 10); and multiple MES. RESULTS: According to TEE, there were 52 patients (50%) with a small PFO, 37 patients (35.6%) with a moderate PFO, and 15 patients (14.4%) with a large PFO. There were 48 patients (46.1%) with a small amount of MES, 34 patients (32.7%) with a moderate amount of MES, and 22 patients (21.1%) with multiple MES on TCD. A strong relationship between the size of the PFO on TEE and the amount of MES on contrast transcranial Doppler was found (P < 0.0001), such that the larger the PFO on TEE, the greater the amount of MES on TCD. CONCLUSIONS: There is a high correlation between the size of the PFO on TEE and the amount of MES on TCD in stroke and TIA patients.
BACKGROUND AND PURPOSE: The inter-relation between the size of patent foramen ovale (PFO) by transesophageal echocardiography (TEE) and the amount of microembolic signals (MES) on transcranial doppler (TCD) is still not determined. METHODS: The study group comprised of 104 patients with first-ever ischaemic stroke or transient ischemic attack (TIA). Three groups were formed according to the amount of MES on TCD: a small amount of MES (0-10 MES); a moderate amount of MES (countable MES higher than 10); and multiple MES. RESULTS: According to TEE, there were 52 patients (50%) with a small PFO, 37 patients (35.6%) with a moderate PFO, and 15 patients (14.4%) with a large PFO. There were 48 patients (46.1%) with a small amount of MES, 34 patients (32.7%) with a moderate amount of MES, and 22 patients (21.1%) with multiple MES on TCD. A strong relationship between the size of the PFO on TEE and the amount of MES on contrast transcranial Doppler was found (P < 0.0001), such that the larger the PFO on TEE, the greater the amount of MES on TCD. CONCLUSIONS: There is a high correlation between the size of the PFO on TEE and the amount of MES on TCD in stroke and TIApatients.
Authors: Marina Guchlerner; Peter Kardos; Eva Liss-Koch; Jennifer Franke; Nina Wunderlich; Stefan Bertog; Horst Sievert Journal: J Clin Sleep Med Date: 2012-08-15 Impact factor: 4.062
Authors: Anna Grisold; Walter Rinner; Anna Paul; Harald Gabriel; Uros Klickovic; Michael Wolzt; Martin Krenn; Fritz Zimprich; Gabriel Bsteh; Thomas Sycha Journal: J Neuroimaging Date: 2021-09-30 Impact factor: 2.324
Authors: Rowlens M Melduni; Waldemar E Wysokinski; Zhenzhen Wang; Bernard J Gersh; Samuel J Asirvatham; Sri Harsha Patlolla; Eddie L Greene; Jae K Oh; Hon-Chi Lee Journal: Open Heart Date: 2020-04-06