{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,21]],"date-time":"2026-04-21T10:34:36Z","timestamp":1776767676663,"version":"3.51.2"},"reference-count":27,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"10","content-domain":{"domain":["www.ahajournals.org"],"crossmark-restriction":true},"short-container-title":["Stroke"],"published-print":{"date-parts":[[1998,10]]},"abstract":"<jats:p>\n            <jats:italic>Background and Purpose<\/jats:italic>\n            \u2014We correlated the mean transcranial Doppler blood flow velocity (FVm) during carotid endarterectomy with the functional collateral pathway(s) documented by angiography.\n          <\/jats:p>\n          <jats:p>\n            <jats:italic>Methods<\/jats:italic>\n            \u2014Three patient groups were established: group 1 was dependent on the anterior communicating artery, group 2 on the anterior communicating artery and ipsilateral posterior communicating artery, and group 3 on the ipsilateral posterior communicating artery. Continuous middle cerebral artery FVm and electroencephalographic monitoring were performed in 45 patients during carotid endarterectomy.\n          <\/jats:p>\n          <jats:p>\n            <jats:italic>Results<\/jats:italic>\n            \u2014Clamped FVm was lowest in group 3 at 17\u00b19 cm\/s versus 36\u00b116 and 33\u00b111 cm\/s for groups 1 and 2 (\n            <jats:italic>P<\/jats:italic>\n            &lt;0.01). FVm values in groups 1 and 2 were similar. There was significant cerebral arterial vasodilation in group 3 patients on the basis of a pulsatility index of 0.38\u00b10.15. The maximum FVm after clamp release was similar among the 3 groups. Normalized blood flow velocity 1 minute before release of the clamp was increased from the minimum flow velocity after clamping only in group 1 and 2 patients.\n          <\/jats:p>\n          <jats:p>\n            <jats:italic>Conclusions<\/jats:italic>\n            \u2014The ipsilateral posterior communicating artery is a minor collateral pathway during acute carotid occlusion that contributes little to the collateral flow if there is a functional anterior communicating artery. Collateral flow through the middle cerebral artery is not recruited during occlusion in group 3 patients. The reperfusion FVm transient is independent of the primary collateral pathway. Documentation of functional collateral pathways on the basis of Doppler or angiographic examination may be advantageous in future studies since it can provide the basis for comparison among studies.\n          <\/jats:p>","DOI":"10.1161\/01.str.29.10.2038","type":"journal-article","created":{"date-parts":[[2011,6,17]],"date-time":"2011-06-17T20:08:03Z","timestamp":1308341283000},"page":"2038-2042","update-policy":"https:\/\/doi.org\/10.1161\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":18,"title":["Predicting the Effect of Carotid Artery Occlusion During Carotid Endarterectomy"],"prefix":"10.1161","volume":"29","author":[{"given":"Dennis D.","family":"Doblar","sequence":"first","affiliation":[{"name":"From the Departments of Anesthesiology (D.D.D., N.V.P.), Biomedical Engineering (D.D.D.), and Surgery (W.J., H.M.), University of Alabama at Birmingham."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nataliya V.","family":"Plyushcheva","sequence":"additional","affiliation":[{"name":"From the Departments of Anesthesiology (D.D.D., N.V.P.), Biomedical Engineering (D.D.D.), and Surgery (W.J., H.M.), University of Alabama at Birmingham."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"William","family":"Jordan","sequence":"additional","affiliation":[{"name":"From the Departments of Anesthesiology (D.D.D., N.V.P.), Biomedical Engineering (D.D.D.), and Surgery (W.J., H.M.), University of Alabama at Birmingham."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Holt","family":"McDowell","sequence":"additional","affiliation":[{"name":"From the Departments of Anesthesiology (D.D.D., N.V.P.), Biomedical Engineering (D.D.D.), and Surgery (W.J., H.M.), University of Alabama at Birmingham."}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"276","reference":[{"key":"e_1_3_2_1_2","doi-asserted-by":"publisher","DOI":"10.1159\/000117130"},{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.3171\/jns.1994.81.1.0015"},{"key":"e_1_3_2_3_2","doi-asserted-by":"publisher","DOI":"10.1007\/BF00380944"},{"key":"e_1_3_2_4_2","doi-asserted-by":"publisher","DOI":"10.1161\/str.19.8.3135641"},{"key":"e_1_3_2_5_2","doi-asserted-by":"publisher","DOI":"10.1161\/str.23.2.1561643"},{"key":"e_1_3_2_6_2","doi-asserted-by":"publisher","DOI":"10.1161\/str.27.12.2188"},{"key":"e_1_3_2_7_2","doi-asserted-by":"publisher","DOI":"10.1161\/str.27.2.296"},{"key":"e_1_3_2_8_2","doi-asserted-by":"publisher","DOI":"10.1161\/str.28.5.899"},{"key":"e_1_3_2_9_2","doi-asserted-by":"publisher","DOI":"10.1016\/S1078-5884(96)80140-7"},{"key":"e_1_3_2_10_2","doi-asserted-by":"publisher","DOI":"10.1212\/WNL.40.4.680"},{"key":"e_1_3_2_11_2","doi-asserted-by":"publisher","DOI":"10.1177\/000331979404501207"},{"key":"e_1_3_2_12_2","first-page":"195","volume":"16","year":"1995","unstructured":"Mueller M, Hermes M, Bruckman H, Schimrigk K. Transcranial Doppler ultrasound in the evaluation of collateral blood flow in patients with internal carotid artery occlusion: correlation with cerebral angiography. AJNR Am J Neuroradiol. 1995;16:195\u2013202.","journal-title":"Am J Neuroradiol"},{"key":"e_1_3_2_13_2","doi-asserted-by":"publisher","DOI":"10.1161\/str.22.9.1926254"},{"key":"e_1_3_2_14_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0741-5214(97)70009-0"},{"key":"e_1_3_2_15_2","doi-asserted-by":"publisher","DOI":"10.1097\/00008506-199701000-00005"},{"key":"e_1_3_2_16_2","doi-asserted-by":"publisher","DOI":"10.1159\/000117145"},{"key":"e_1_3_2_17_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0950-821X(05)80231-2"},{"key":"e_1_3_2_18_2","doi-asserted-by":"publisher","DOI":"10.1161\/str.20.1.2911835"},{"key":"e_1_3_2_19_2","doi-asserted-by":"publisher","DOI":"10.1161\/str.23.11.1440706"},{"key":"e_1_3_2_20_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0950-821X(05)80014-3"},{"key":"e_1_3_2_21_2","doi-asserted-by":"crossref","unstructured":"Leinsinger G Furst H Schmiedek P Einhaupul K Kirsch CM. Cerebrovascular reserve capacity measured with 133-xenon dynamic SPECT before and after carotid endarterectomy. In: Schmiedek P Einhaupul K Kirsch CM eds. Stimulated Cerebral Blood Flow. Berlin Germany: Springer-Verlag; 1992:250\u2013256.","DOI":"10.1007\/978-3-642-77102-6_27"},{"key":"e_1_3_2_22_2","doi-asserted-by":"publisher","DOI":"10.1161\/str.19.8.3135641"},{"key":"e_1_3_2_23_2","unstructured":"Ringlestein EB Otis SM. Physiological testing of vasomotor reserve. In: Newell DW Asalid R eds. Transcranial Doppler. New York NY: Raven Press; 1992:83\u201399."},{"key":"e_1_3_2_24_2","doi-asserted-by":"publisher","DOI":"10.1161\/str.15.4.6464073"},{"key":"e_1_3_2_25_2","doi-asserted-by":"publisher","DOI":"10.3171\/jns.1988.68.4.0532"},{"key":"e_1_3_2_26_2","doi-asserted-by":"publisher","DOI":"10.1136\/jnnp.28.2.124"},{"key":"e_1_3_2_27_2","doi-asserted-by":"publisher","DOI":"10.1016\/0741-5214(86)90110-2"}],"container-title":["Stroke"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.ahajournals.org\/doi\/full\/10.1161\/01.STR.29.10.2038","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,5,12]],"date-time":"2024-05-12T22:32:11Z","timestamp":1715553131000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.ahajournals.org\/doi\/10.1161\/01.STR.29.10.2038"}},"subtitle":["Comparing Transcranial Doppler Measurements and Cerebral Angiography"],"short-title":[],"issued":{"date-parts":[[1998,10]]},"references-count":27,"journal-issue":{"issue":"10","published-print":{"date-parts":[[1998,10]]}},"alternative-id":["10.1161\/01.STR.29.10.2038"],"URL":"https:\/\/doi.org\/10.1161\/01.str.29.10.2038","relation":{},"ISSN":["0039-2499","1524-4628"],"issn-type":[{"value":"0039-2499","type":"print"},{"value":"1524-4628","type":"electronic"}],"subject":[],"published":{"date-parts":[[1998,10]]},"assertion":[{"value":"1998-03-31","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"1998-07-16","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"1998-10-01","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}