BACKGROUND: Early recovery after intravenous thrombolysis can be observed in stroke; however, the utility of measuring clinical improvement to assess artery status has not been established. We sought to determine the accuracy of serial National Institutes of Health Stroke Scale (NIHSS) scores to detect complete early recanalization of the middle cerebral artery. METHODS AND RESULTS: Data from the CLOTBUST trial (Combined Lysis of Thrombus in Brain Ischemia Using Transcranial Ultrasound and Systemic tPA) were used to determine the most sensitive and specific NIHSS-derived parameter to identify complete recanalization. Then, reproducibility was tested against a separate patient population (Barcelona data set). NIHSS scores were determined before tissue plasminogen activator bolus and at 60 and 120 minutes in both data sets. Receiver operating characteristic curves were used to compare test performance. The accuracy of individual cutoffs was demonstrated by sensitivity, specificity, and positive and negative predictive values. A total of 122 patients in the CLOTBUST data set and 98 in the Barcelona data set received 0.9 mg/kg intravenous tissue plasminogen activator [mean age 69+/-12 versus 72+/-12 years, 57% male versus 51% male, median NIHSS 16 versus 17 points, mean time from onset to treatment 140+/-32 versus 177+/-59 minutes, and complete recanalization of the middle cerebral artery in 19% versus 17%). For identification of recanalization, an NIHSS score reduction of > or = 40% offered the best tradeoff, with sensitivity, specificity, positive predictive value, and negative predictive value of 65%, 85%, 50%, and 91% at 60 minutes and 74%, 80%, 58%, and 89% at 120 minutes, respectively. Test performance was equal in the Barcelona data set. CONCLUSIONS: Relative changes in serial NIHSS scores can serve as a simple clinical indicator of arterial status after intravenous thrombolysis. Accuracy parameters are affected by the process of recanalization and its varying clinical significance.
BACKGROUND: Early recovery after intravenous thrombolysis can be observed in stroke; however, the utility of measuring clinical improvement to assess artery status has not been established. We sought to determine the accuracy of serial National Institutes of Health Stroke Scale (NIHSS) scores to detect complete early recanalization of the middle cerebral artery. METHODS AND RESULTS: Data from the CLOTBUST trial (Combined Lysis of Thrombus in Brain Ischemia Using Transcranial Ultrasound and Systemic tPA) were used to determine the most sensitive and specific NIHSS-derived parameter to identify complete recanalization. Then, reproducibility was tested against a separate patient population (Barcelona data set). NIHSS scores were determined before tissue plasminogen activator bolus and at 60 and 120 minutes in both data sets. Receiver operating characteristic curves were used to compare test performance. The accuracy of individual cutoffs was demonstrated by sensitivity, specificity, and positive and negative predictive values. A total of 122 patients in the CLOTBUST data set and 98 in the Barcelona data set received 0.9 mg/kg intravenous tissue plasminogen activator [mean age 69+/-12 versus 72+/-12 years, 57% male versus 51% male, median NIHSS 16 versus 17 points, mean time from onset to treatment 140+/-32 versus 177+/-59 minutes, and complete recanalization of the middle cerebral artery in 19% versus 17%). For identification of recanalization, an NIHSS score reduction of > or = 40% offered the best tradeoff, with sensitivity, specificity, positive predictive value, and negative predictive value of 65%, 85%, 50%, and 91% at 60 minutes and 74%, 80%, 58%, and 89% at 120 minutes, respectively. Test performance was equal in the Barcelona data set. CONCLUSIONS: Relative changes in serial NIHSS scores can serve as a simple clinical indicator of arterial status after intravenous thrombolysis. Accuracy parameters are affected by the process of recanalization and its varying clinical significance.
Authors: Georgios Tsivgoulis; Aristeidis H Katsanos; Pavla Kadlecová; Anna Czlonkowska; Adam Kobayashi; Miroslav Brozman; Viktor Švigelj; Laszlo Csiba; Klara Fekete; Janika Kõrv; Vida Demarin; Aleksandras Vilionskis; Dalius Jatuzis; Yakup Krespi; Chrissoula Liantinioti; Sotirios Giannopoulos; Robert Mikulik Journal: J Neurol Date: 2017-03-18 Impact factor: 4.849
Authors: Turner C Lisle; Kevin M Barrett; Leo M Gazoni; Brian R Swenson; Christopher D Scott; Ali Kazemi; John A Kern; Benjamin B Peeler; Irving L Kron; Karen C Johnston Journal: Ann Thorac Surg Date: 2008-05 Impact factor: 4.330
Authors: Laura Heitsch; Laura Ibanez; Caty Carrera; Michael M Binkley; Daniel Strbian; Turgut Tatlisumak; Alejandro Bustamante; Marc Ribó; Carlos Molina; Antoni Dávalos; Elena López-Cancio; Lucia Muñoz-Narbona; Carol Soriano-Tárraga; Eva Giralt-Steinhauer; Victor Obach; Agnieszka Slowik; Joanna Pera; Katarzyna Lapicka-Bodzioch; Justyna Derbisz; Tomás Sobrino; José Castillo; Francisco Campos; Emilio Rodríguez-Castro; Susana Arias-Rivas; Tomas Segura; Gemma Serrano-Heras; Cristófol Vives-Bauza; Rosa Díaz-Navarro; Silva Tur; Carmen Jimenez; Joan Martí-Fàbregas; Raquel Delgado-Mederos; Juan Arenillas; Jerzy Krupinski; Natalia Cullell; Nuria P Torres-Aguila; Elena Muiño; Jara Cárcel-Márquez; Francisco Moniche; Juan A Cabezas; Andria L Ford; Rajat Dhar; Jaume Roquer; Pooja Khatri; Jordi Jiménez-Conde; Israel Fernandez-Cadenas; Joan Montaner; Jonathan Rosand; Carlos Cruchaga; Jin-Moo Lee Journal: Stroke Date: 2020-12-15 Impact factor: 7.914