Plankton Sign in Pleural Effusion on Lung POCUS Typically highly suggestive of hemothorax In this patient: PH 7.40 Exudate 5000 WBC, 80% lymphocytes Gene Xpert TB, BAAR negative - Oscar Peña MD @oscaryasser #Plankton #Sign #Pleural #Effusion #POCUS #clinical #hemothorax #ultrasound #lung #pulmonary