A 80 y/o woman presented to the ED for dyspnoea.
She underwent a knee replacement 2 weeks ago, RR is 24, O2 saturation is 88%. HR is 90, the knee is edematous.
You are going to hunt a pulmonary embolism (PE)
While you phone the radiologist for a thorax CT scan you have an idea:
Can a compression ultrasonography (CUS) helps to avoid a CT?
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