Patricia Ruth Atchinson, DO Patricia Ruth Atchinson, DO, is a Critical Care Fellow at Dartmouth-Hitchcock Medical Center and an Emergency Medicine physician. ARTICLES July 31, 2020 COVID-19 Related Respiratory Failure: A Non-Invasive Approach March 4, 2019 Blood Gases: ABG vs. VBG August 29, 2018 Oxygenate, Ventilate, Do No Harm: Ventilating Challenging Patients Part 3 of 3 August 1, 2018 Oxygenate, Ventilate, Do No Harm July 15, 2018 Oxygenate, Ventilate, Do No Harm: Vent Basics for Emergency Physicians Part 1 of 3