Bradypnea (Greek from bradys, slow + pnoia, breath; British English spelling bradypnoea) refers to an abnormally slow breathing rate.

Bradypnea (Greek from bradys, slow + pnoia, breath; British English spelling bradypnoea) refers to an abnormally slow breathing rate.

The rate at which bradypnea is diagnosed depends upon the age of the patient.

Rates of breathing are described with the terms eupnea, bradypnea (slow), and tachypnea (fast).

Overdose can lead to a range of symptoms including convulsions, nausea, emesis, haematemesis, bradypnea, coma.

Side effects increase with dosage and include drowsiness, mild stomach ache, lethargy, urinary retention, bradypnea, constipation, and nausea.

Bradypnea (Greek from bradys, slow + pnoia, breath; British English spelling bradypnoea) refers to an abnormally slow breathing rate.

A normal respiratory rate is termed eupnea, an increased respiratory rate is termed tachypnea and a lower than normal respiratory rate is termed bradypnea.

Phenobarbital causes a "depression" of the body's systems, mainly the central and peripheral nervous systems; thus, the main characteristic of phenobarbital overdose is a "slowing" of bodily functions, including decreased consciousness (even coma), bradycardia, bradypnea, hypothermia, and hypotension (in massive overdoses).