The group of signs and symptoms that are often seen during the initial stages of patient blast management, which is known as the "blast pattern triad," includes:

a. tachycardia, confusion, and urinary incontinence.
b. hypertension, bradycardia, and apnea.
c. apnea, hypotension, and bradycardia.
d. confusion, bradycardia, and hypertension.

Answer: c