Kettering (Special Procedures) Questions With Complete Solutions

Explain the purpose of Hyperbaric Oxygen Therapy (HBO) correct answer: - Means of increasing the PO₂ by increasing the barometric pressure List the diseases/disorders that can be treated with hyperbaric O₂ therapy correct answer: - CO poisoning - Decompression sickness (bends) - Tissue transplants/graphs - Anaerobic infections (gas gangrene) What are the pressures in which HBO therapy is conducted? correct answer: - Most HBO therapy is conducted at pressures between 2-3 atmosphere pressure absolute (ATA). a) Typical chamber can provide pressure between 2-6 ATA. Describe how the respiratory therapist would administer oxygen to a patient receiving hyperbaric oxygen therapy correct answer: - It is administered by mask or through the chamber at 100% Describe the purpose of utilizing Helium/Oxygen therapy for patients who have increased work of breathing (WOB) correct answer: - Decreases the patient's WOB by delivering low density gas (most important property) that can easily maneuver around obstructions State the indications of Helium/Oxygen therapy correct answer: - Post extubation stridor - Severe asthma/status asthmaticus - Obstructive tumors - Foreign object aspiration - Partial vocal cord paralysis List the two He/O₂ mixtures that are available correct answer: - 80% He/20% O₂ (most used) - 70% He/30% O₂ What type of oxygen administration device is used to deliver Helium/Oxygen therapy? correct answer: - Non-rebreathing mask What would the actual flow rate be if a 70/30 heliox mixture is used with an oxygen flowmeter set at a rate of 8 L/min? correct answer: - Actual Flow= indicated flow × factor Factors: a) 80/20 mixture: 1.8 (or use 2) b) 70/30 mixture: 1.6 Ex: Actual Flow = indicated flow × factor Actual flow = 8 L/min × 1.6 Actual flow = 12.8 L/min Describe the physiologic effects of Inhaled Nitric Oxide (iNO) on the pulmonary system correct answer: -Inhaled Nitric Oxide (iNO) acts as a potent pulmonary vasodilator, which improves pulmonary blood flow and PaO₂, but does not affect systemic blood pressure. List the 4 indications for inhaled nitric oxide therapy correct answer: - Primary pulmonary hypertension - Refractory hypoxemia related to increased pulmonary artery pressure (PAP)