Canadian journal of anaesthesia = Journal canadien d'anesthésie
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Qualitative research (QR) take advantage of a wide range of methods and theoretical frameworks to explore people's beliefs, perspectives, experiences, and behaviours and has been applied to many areas of healthcare. The aim of this review was to explore how QR has contributed to the field of perioperative anesthesiology. ⋯ Qualitative research has been used to explore an array of issues in perioperative anesthesiology. Some areas may benefit from further primary research, such as interprofessional communication or patient-centred care, while other areas may deserve a detailed systematic knowledge synthesis. We identified suboptimal reporting of qualitative methods and their link to study findings. Increased attention to quality criteria and reporting standards in QR is called for.
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Adequate illumination of the larynx is needed during laryngoscopy to facilitate tracheal intubation. The International Organization for Standardization (ISO) has established a minimum light intensity for direct laryngoscopy (DL) of over 500 lux for at least ten minutes, but no such standard exists for Macintosh geometry videolaryngoscope (Mac-VL) blades, which allow for both direct or indirect (videoscopic) viewing of the larynx. Using in situ bench and in vitro testing in a human cadaver, we determined illumination and luminance values delivered by various Mac-VLs and compared these with published minimum lighting benchmarks as well as a reference direct laryngoscope. ⋯ Our results indicate that illuminance and luminance provided by Mac-VLs used for direct laryngeal viewing varies substantially between devices, with some falling below standards previously suggested as the minimum required for DL. While this may have no implications for the quality of image visible on a device's video monitor, the clinician should be aware that when Mac-VLs are used for direct viewing of the larynx, lighting may not be optimal. This might adversely affect ease or success of tracheal intubation.