title: Fast Fourier transforms as prophecy: predicting hypotension during spinal anesthesia.
authors.forename: Richard
authors.initials: R
authors.lastname: Smiley
mesh_terms: D000775:Anesthesia, Spinal / Q000009:adverse effects*; D005583:Fourier Analysis; D006801:Humans; D007022:Hypotension / Q000209:etiology* / Q000503:physiopathology; D011237:Predictive Value of Tests