Post-operative atelectasis is most likely to develop in which of the following clinical scenarios?
1. A young adult post-open appendectomy
2. An elderly patient post total hip replacement surgery
3. A patient post coronary artery bypass grafting (CABG) surgery
4. An adolescent post laparoscopic cholecystectomy
Select the correct answer using the codes given below:
1
1 only
2
1 and 2
3
1, 2, and 3
4
3 only