A 62-year-old female with a history of congestive heart failure presents after a family picnic with worsening shortness of breath. This is exacerbated by walking or lying in the recumbant position. Her blood pressure is 150/80, heart rate 90, respiratory rate is 24, temperature is 98 degrees Fahrenheit and pulse oximetry reads 88% on room air. She speaks in broken sentences. She has JVD to the angle of the mandible and her trachea is midline. Her lungs have symmetrically decreased air movement with crackles halfway up. What is the best way to support her breathing while waiting for medications to take effect?