Extreme sinus bradycardia following routine venipuncture.
D001919:Bradycardia / Q000209:etiology*; D004562:Electrocardiography; D006801:Humans; D008297:Male; D008875:Middle Aged; D011677:Punctures / Q000009:adverse effects*; D013575:Syncope / Q000209:etiology; D014680:Veins