This document from Indiana University Oral and Maxillofacial Surgery discusses the treatment of aspiration and laryngospasm during peri-operative procedures. It recommends intubating patients who cannot ventilate adequately after aspiration and administering high concentrations of oxygen. For laryngospasm, it advises using 100% oxygen, suctioning the surgical site, drawing the tongue and jaw forward, depressing the chest, providing positive pressure with a bag mask, and potentially deepening anesthesia with propofol or administering succinylcholine.