Q. A 65-year-old man with a known history of congestive heart failure (CHF) comes to the clinic with worsening dyspnea, increased fatigue, and unable to sleep at night for the past 2 days. He is compliant with all his medication. His temperature is 98.6°F (37°C), pulse is 100 beats per minute, blood pressure is 160/90 mmHg and respiratory rate is 24 per minute. Physical examination shows jugular venous distention at 5cm above sternal angle and bilateral pitting pedal edema extending above ankles. On auscultation, bibasilar crackles are heard with normal heart sounds. What is the immediate next step in his management?