Which Respiratory Assessment Finding Is Most Concerning in This Case

Ms. Reyes, a 45-year-old Female, Is Scheduled for a Thoracotomy Due to a Suspected Lung Tumor. She Is Anxious and Has Difficulty Breathing. Her Vital Signs Are as Follows: HR 110 Bpm, RR 24 Breaths Per Minute, BP 140/90 Mmhg and Spo2 92% on Room Air