Eight variables were included in a block rule: Age < 50 years, pulse < 100 bpm, SaO(2) > 94%, no unilateral leg swelling, no hemoptysis, no recent trauma or surgery, no prior
[ncbi.nlm.nih.gov]
[…] or S4 gallop: 34% Clinical signs and symptoms suggesting thrombophlebitis: 32% Lower extremity edema: 24% Cardiac murmur: 23% Cyanosis: 19% Testing Perform diagnostic testing
[emedicine.medscape.com]
Look for signs of right-side heart failure, such as jugular venous distention and peripheral edema.
[ems1.com]