Prefixes for Breathing

These prefixes attach to -pnea to describe what the breathing is doing.

Word	Parts	Meaning
`apnea`	`a-` + `-pnea`	absence or stopping of breathing
`dyspnea`	`dys-` + `-pnea`	difficult or uncomfortable breathing
`tachypnea`	`tachy-` + `-pnea`	abnormally fast breathing
`bradypnea`	`brady-` + `-pnea`	abnormally slow breathing
`hypopnea`	`hypo-` + `-pnea`	abnormally shallow or reduced breathing
`hyperpnea`	`hyper-` + `-pnea`	increased depth or rate of breathing