can a negative CT scan rule out subarachnoid hemorrhage?
2,362 views · Published 1 March 2017 · 6:49 · Indexed 20 October 2026
Channel: CarloOllerMD · 2017 · Education
1. Newer generation CT scans are highly sensitive in diagnosing SAH when performed within 6 hours of headache onset and interpreted by qualified radiologists. a. May obviate need for LP in these cases. 2. After 6 hours, sensitivity drops to 85.7% (95% confidence interval = 78.3% to 90.9%). a. These patients should be approached with more caution and may need a lumbar puncture. 3. The mean age of these patients was 45 years. 4. Characteristics of the headaches included: a. Eighty-two percent characterized their headache as the worst of their life. b. One-third of the patients complained of neck pain or stiffness by history, but only 5.7% demonstrated it on exam. c. Almost a third of patients had vomiting. d. Eighteen percent of patients had the headache awaken them from sleep. e. Onset of headache occurred during exertion or sexual activity in 12.2% and 6.9%, respectively. RESTMORE Sleep Supplement: http://amzn.to/2m5LeqU Subscribe to our Best of Page: https://www.youtube.com/channel/UCus9H-X9vLMi6iKQj2OoI1g?sub_confirmation=1 Warning: This video may contain pus, pimple popping, surgery, zits, whiteheads, furuncles, warts or other medical problems. This is intended for educational purposes. Please do not watch if this content offends you! Emergency Medical Kit from Amazon: http://amzn.to/1YMbtjo Blackhead Removal Tool: http://amzn.to/1W3mRsK Manicure / Pedicture Set: http://amzn.to/1W8EyI7 Ultimate Emergency Room Guide: http://amzn.to/24VHqYo Stainless Steel Blackhead Removal Kit: http://amzn.to/1OReNJM Dr. Gilmore's Meta-Seven: http://amzn.to/1NDWnvZ Subscribe: https://www.youtube.com/channel/UCAuYYKWq7txPuft_jsowwUQ?sub_confirmation=1 Best of TheEDexitVideo: https://www.youtube.com/channel/UCus9H-X9vLMi6iKQj2OoI1g?sub_confirmation=1 This video is part of the ScaleLab network. You can join them here: http://scalelab.com/apply?referral=8164 This video may contain cysts, blood, abscesses, dislocations and other content. Viewer discretion is advised. RESTMORE Sleep Supplement from Amazon: http://amzn.to/2iXgbM2
