What is difference between BLS , ACLS , PALS , PEARS?

1.
Basic life support (BLS) is the level of medical care which is used for victims of life-threatening illnesses or injuries until they can be given full medical care at a hospital.
It can be provided by trained medical personnel, including emergency medical technicians, paramedics, and by laypersons who have received BLS training.
BLS is generally used in the pre-hospital setting, and can be provided without medical equipment.
Answerd copied from:http://en.wikipedia.org/wiki/Basic_life_support2.
Advanced cardiac life support or Advanced Cardiovascular Life Support (ACLS) refers to a set of clinical interventions for the urgent treatment of cardiac arrest, stroke and other life threatening medical emergencies, as well as the knowledge and skills to deploy those interventions.[1] Answerd copied from: http://en.wikipedia.org/wiki/Advanced_Cardiac_Life_Support3.
Pediatric Advanced Life Support (PALS) is a classroom, video-based, Instructor-led course that uses a series of simulated pediatric emergencies to reinforce the important concepts of a systematic approach to pediatric assessment, basic life support, PALS treatment algorithms, effective resuscitation and team dynamics.
The goal of the PALS Course is to improve the quality of care provided to seriously ill or injured children, resulting in improved outcomes.
Answerd copied from: http://www.heart.org/HEARTORG/CPRAndECC/HealthcareTraining/Pediatrics/Pediatric-Advanced-Life-Support-PALS_UCM_303705_Article.jsp4.
PEARS: teaches providers how to recognize respiratory distress, shock and cardiac arrest, and provide appropriate lifesaving interventions within the initial minutes of response until the child is transferred to an advanced life support provider.
The goal of PEARS is to improve the quality of care provided to seriously ill or injured infants and children, resulting in improved outcomes.
Answerd copied from: http://www.heart.org/HEARTORG/CPRAndECC/HealthcareTraining/Pediatrics/Pediatric-Emergency-Assessment-Recognition-and-StabilizationPEARS_UCM_308135_Article.jsp

1) BLS BLS for Healthcare Providers - Classroom In this classroom-based course, healthcare professionals learn to recognize several life-threatening emergencies, provide CPR to victims of all ages, use an AED, and relieve choking in a safe, timely and effective manne BLS for Healthcare Providers Online Part1 Busy healthcare professionals who need a flexible training option can choose this course for first-time or renewal certification.
Students first complete online lessons and then meet with an AHA instructor for skills practice and testing.
HeartCode® BLS Part1 In this classroom-based course, healthcare professionals learn to recognize several life-threatening emergencies, provide CPR to victims of all ages, use an AED, and relieve choking in a safe, timely and effective manner.2) ACLS Advanced cardiac life support or Advanced Cardiovascular Life Support (ACLS) refers to a set of clinical interventions for the urgent treatment of cardiac arrest, stroke and other life threatening medical emergencies, as well as the knowledge and skills to deploy those interventions.[1] Extensive medical knowledge and rigorous hands-on training and practice are required to master ACLS.
Only qualified health care providers can provide ACLS, as it requires the ability to manage the patient's airway, initiate IV access, read and interpret electrocardiograms, and understand emergency pharmacology; these include physicians (DOs and MDs), pharmacists (PharmDs), dentists (DDS and DMDs), midlevel practitioners (PAs and NPs), respiratory therapists (RTs), nurses (RNs), and paramedics.
Other emergency responders may also be trained.
Some health professionals, or even lay rescuers, may be trained in basic life support (BLS), especially cardiopulmonary resuscitation or CPR.
When a sudden cardiac arrest occurs, immediate CPR is a vital link in the chain of survival.
Another important link is early defibrillation, which has improved greatly with the widespread availability of AEDs.3) PALS PALSPediatric Advanced Life Support (PALS) is a classroom, video-based, Instructor-led course that uses a series of simulated pediatric emergencies to reinforce the important concepts of a systematic approach to pediatric assessment, basic life support, PALS treatment algorithms, effective resuscitation and team dynamics.
The goal of the PALS Course is to improve the quality of care provided to seriously ill or injured children, resulting in improved outcomes.
The PALS Course is for healthcare providers who respond to emergencies in infants and children.
These include personnel in emergency response, emergency medicine, intensive care and critical care units such as physicians, nurses, paramedics and others who need a PALS course completion card for job or other requirements.4) PEARS Pediatric Emergency Assessment, Recognition and Stabilization (PEARS) PEARS is for healthcare providers such as emergency medical technicians (EMTs), medical and surgical nurses, school nurses and any other healthcare provider who infrequently sees critically ill infants and children.

BLS or PEARS are the initial response to any life threatening situation followed by ACLS or PALS for advance management of patients including interventions such as cardioversion,shock,intubation and medications.
ACLS also includes assessment and initial intervention for patients having acute stroke and MI.

Certifications for Healthcare Providers

Basic life support for health care providers

Basic  Life support (BLS) and Advance  Cardiovascular life suport  (ACLS)