title: Plethysmographic monitoring.
mesh_terms: D003490:Cyanosis; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D008991:Monitoring, Physiologic; D010991:Plethysmography; D014034:Toes; D014652:Vascular Diseases / Q000503:physiopathology