Final answer:
A comparison of rigid (hard) catheters and soft (flexible) catheters used in suctioning.
Step-by-step explanation:
When it comes to suctioning, there are two main types of catheters: rigid (hard) catheters and soft (flexible) catheters. Rigid catheters are made of firm material, such as plastic or metal, and are commonly used for deep suctioning in the respiratory system. Soft catheters, on the other hand, are more flexible and are typically used for shallow suctioning in the upper airway.