A physician orders a T tube trial for a patient receiving ventilatory support in the assist-control mode with an FiO2 of 0.4. What FiO2 would you recommend for this patient during the sponta-neous breathing period?

Mustard, lewisite, and phosgene oxime are examples of:

a. Vesicants b. Nerve agents c. Radiological agents d. Chocking agents

Which one of the following statements about the P wave is TRUE?

A) It represents ventricular depolarization. B) It is a rounded wave appearing after the QRS complex. C) It follows the R wave on normal ECGs. D) It corresponds to atrial depolarization.