by Eric D. McCollum, MD
Dr. Eric McCollum is an Assistant Professor at Johns Hopkins School of Medicine, Department of Pediatrics, Eudowood Division of Pediatric Respiratory Sciences in Baltimore, United States. He has a joint appointment with Johns Hopkins Bloomberg School of Public Health, Department of International Health and he is the Director of Johns Hopkins University Global Program in Pediatric Respiratory Sciences, Maseru, Lesotho.
The medical axiom “vital signs are vital” infers that vital signs are the foundation for delivering high quality pediatric clinical care. And they are. Vital signs traditionally include the four measurements of body temperature, heart rate, respiratory rate, and blood pressure. However, over the past several decades a fifth vital sign has emerged, oxygen saturation.