Clinical Research Directory

Inclusion criteria: * Purulent pleural fluid versus pleural fluid analysis demonstrating pH \<7.2, glucose \<60 mg/dL, positive Gram stain, or positive pleural fluid culture versus multiseptated pleural effusion with infection at top of differential diagnosis * Patients initiating intrapleural lytic therapy under the care of the Interventional Pulmonary consult service at Mayo Clinic in Rochester, MN Exclusion Criteria: * Unwillingness to give informed consent * Patients with known bleeding diathesis * Platelet count \<50,000 per μL * INR \>2.2 (of note, INR can be allowed to drift down or be reversed pharmacologically prior to initiation of intrapleural lytics/saline) * Current use of systemic anticoagulation or antiplatelet therapy without the ability to hold therapy for the recommended amount of time prior to an invasive procedure (aspirin monotherapy is acceptable) * Pregnant or nursing females, or females of child-bearing potential who decline a pregnancy test prior to enrollment * Incarcerated patients * Presence of ipsilateral bronchopleural fistula * Current or recent (within past 30 days) presence of tunneled pleural catheter on the same side as the current proven/suspected pleural space infection