![]() A characteristic arterial blood gas in the presence of hypoventilation and no supplemental oxygen reveals hypoxemia and hypercarbia. Oxygen saturations ≤90% are generally considered clinically significant, and in the sedated patient without underlying lung disease indicate significant hypoventilation. Note that pulse oximeters assess oxygenation and do not evaluate carbon dioxide elimination. Pulse oximetry must be applied to all children undergoing moderate to deep sedation. A microprocessor in the pulse oximeter determines the relative proportions of red and infrared light to calculate the percentage of oxygenated versus nonoxygenated hemoglobin in the tissue bed. Oxygenated hemoglobin primarily absorbs infrared light, whereas nonoxygenated hemoglobin primarily absorbs red light. The two basic requirements of commercially available pulse oximeters are the presence of a pulsatile tissue bed (arterial vessel) and the spectrophotometric analysis of oxygenated hemoglobin and nonoxygenated hemoglobin. Pulse oximetry is an important noninvasive monitoring technique that allows continuous evaluation of arterial oxygen saturation in the sedated pediatric patient. See: Standards of Care for Appropriate Cardiorespiratory Monitoring per Level of Sedation Hematology, Oncology & Bone Marrow Transplant.General Pediatrics & Adolescent Medicine.Gastroenterology, Hepatology & Nutrition.Developmental Pediatrics & Rehabilitation Medicine.Seminars in Pediatrics 2022- Enduring Content Now Available!.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |