A clinical observational analysis of aerosol emissions from dental procedures.

Aerosol generating procedures (AGPs) are defined as any procedure releasing airborne particles <5 μm in size from the respiratory tract. There remains uncertainty about which dental procedures constitute AGPs. We quantified the aerosol number concentration generated during a range of periodontal, oral surgery and orthodontic procedures using an aerodynamic particle sizer, which measures aerosol number concentrations and size distribution across the 0.

Identification of the source events for aerosol generation during oesophago-gastro-duodenoscopy.

Objective: To determine if oesophago-gastro-duodenoscopy (OGD) generates increased levels of aerosol in conscious patients and identify the source events.

Design: A prospective, environmental aerosol monitoring study, undertaken in an ultraclean environment, on patients undergoing OGD. Sampling was performed 20 cm away from the patient's mouth using an optical particle sizer.

First do no harm: should routine tracheostomy after oral and maxillofacial oncological operations be abandoned?

Tracheostomy is traditionally used to secure the airway after major oral and maxillofacial oncological operations. In our unit, as an alternative, patients are intubated overnight without tracheostomy. We reviewed the case notes of 55 patients who had had a major intraoral resection, neck dissection, and reconstruction with a free flap.