What are the two types of CPR masks used during resuscitation?

The two types of CPR masks used during resuscitation are indeed the Microshield and the Pocket mask.

Both of these devices are designed to provide a barrier between the rescuer and the victim, which helps reduce the risk of transmission of infectious diseases during mouth-to-mouth resuscitation. The Microshield is a smaller mask typically used for CPR training and provides a one-way valve for expelling air, while the Pocket mask is larger and allows for more effective sealing over the victim's mouth and nose to create a proper airway.

Using these masks enhances the safety of the rescuer while ensuring the victim receives the necessary breaths during resuscitation efforts. The Ambu bag, while an important tool in resuscitation, is not classified as a mask used during CPR in the same way that the Microshield and Pocket mask are.