Sections View Full Chapter Figures Tables Videos Full Chapter Figures Tables Videos Supplementary Content +++ ECG Findings ++ Inverted, deep, and wide T waves are most notable in precordial leads (can be seen in any lead). QT interval prolongation. ST segment changes are variable. High-amplitude R waves. Arrhythmias may also occur in the setting of acute cerebral emergencies. +++ Pearls ++ These ECG changes are associated with increased intracranial pressure. Cerebral T waves resolve spontaneously, but can persist up to 6 weeks. Suspect increased intracranial pressure in patient presenting with altered mental status and the perviously mentioned ECG changes. ++ FIGURE 23.46A Cerebral T Waves. This ECG was obtained on a patient with a severe acute hemorrhagic cerebrovascular accident. (ECG contributor: James V. Ritchie, MD.) Graphic Jump LocationView Full Size||Download Slide (.ppt) ++ FIGURE 23.46B Deep, symmetrical, inverted T waves (arrowhead) with a prolonged QT interval. Graphic Jump LocationView Full Size||Download Slide (.ppt) Your MyAccess profile is currently affiliated with '[InstitutionA]' and is in the process of switching affiliations to '[InstitutionB]'. Please click ‘Continue’ to continue the affiliation switch, otherwise click ‘Cancel’ to cancel signing in. Get Free Access Through Your Institution Learn how to see if your library subscribes to McGraw Hill Medical products. Subscribe: Institutional or Individual Sign In Username Error: Please enter User Name Password Error: Please enter Password Forgot Username? Forgot Password? Sign in via OpenAthens Sign in via Shibboleth