Wikipedia
LIFEPAK is a series of vital signs monitors and external cardiac defibrillators produced by medical technology company Physio Control
The LIFEPAK series was introduced in 1972 and is produced by Physio-Control, Inc. Semi-automatic units include the LIFEPAK 12 and LIFEPAK 15 for use by healthcare professionals such as emergency medical technicians and paramedics. Automatic units include the LIFEPAK 500, LIFEPAK 1000 and the LIFEPAK CR Plus for use by members of the public who have been trained to operate them.
LIFEPAKs are more than just defibrillators. They constantly monitor heart rates, and alert the users to sudden changes. They allow for 12-Lead EKG acquisition and interpretation. The LIFEPAK 15 models include a CPR Metronome that verbally tells the rescuers when to ventilate the patient. Some LIFEPAKs also include options for synchronized cardioversion (for treating unstable fast rhythms like supraventricular tachycardia or atrial fibrillation), external pacing (for post-cardiac arrest, bradycardia, and/or heart-block patients), and also monitor oxygen saturation, CO2 output for intubation, and blood pressure.