Anesthesiology
-
The amount of same-day surgery has increased markedly worldwide in recent decades, but there remains limited evidence on chronic postsurgical pain in this setting. ⋯ Persistent postsurgical pain after same-day surgery is common, usually moderate to severe in nature, and occurs mostly in patients without chronic pain prior to surgery.
-
Nonopioid management of postsurgical pain remains a major unmet need. Few studies have evaluated TRPV1 agonists for analgesia after surgery. We studied intraoperative vocacapsaicin, a novel prodrug of the TRPV1 agonist capsaicin, in a validated model of postsurgical pain. ⋯ A single, local administration of vocacapsaicin during surgery reduced pain and opioid consumption for at least 96 hours after surgery compared to control.
-
Aeration heterogeneity affects lung stress and influences outcomes in adults with acute respiratory distress syndrome (ARDS). We hypothesize that aeration heterogeneity may differ between neonatal respiratory disorders and is associated with oxygenation, so its evaluation may be relevant in managing respiratory support. ⋯ Global aeration heterogeneity and regional aeration heterogeneity differ amongst neonatal respiratory disorders. TTN and evolving BPD have the highest intra-patient aeration heterogeneity. TTN, evolving BPD and NARDS have the highest inter-patient aeration heterogeneity, but the latter two have the most diffuse injury and worst gas exchange. Higher aeration heterogeneity is associated with better total lung aeration and oxygenation.
-
During one-lung ventilation (OLV), positive end-expiratory pressure (PEEP) can improve lung aeration, but might over-distend lung units and increase intrapulmonary shunt. We hypothesized that higher PEEP shifts pulmonary perfusion from the ventilated to the non-ventilated lung, resulting in a U-shaped relationship with intrapulmonary shunt during OLV. ⋯ In this experimental model of thoracic surgery, higher PEEP during OLV did not shift the perfusion from the ventilated to the non-ventilated lung, thus not increasing intrapulmonary shunt.