Frequently the combination of a serum D-dimer level and compression ultrasound testing can differentiate between a residual venous clot and an acute recurrent DVT.  However, sometimes the results are equivocal and in these situations an MRI direct thrombus imaging can…
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Lungs normally empty by passive recoil and the pressure in the alveoli at end-expiration is the intrinsic positive end-expiratory pressure (PEEP).  During spontaneous respirations and with normal lungs, the PEEP is equal to atmospheric pressure.  On a ventilator, auto-PEEP occurs…
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