Advanced Life Support (ALS) is a set of life saving protocols and skills that extend basic life support to further support the circulation and provide an open airway and adequate ventilation (breathing).
Advanced Life Support (ALS) is a set of life saving protocols and skills that extend basic life support to further support the circulation and provide an open airway and adequate ventilation (breathing).
Key aspects of ALS level care include:
In cases of cardiac arrest, ALS builds on the foundations of basic life support (BLS) interventions such as bag-mask ventilation with high-flow oxygen, chest compressions, and use of an AED.
The core algorithm of ALS that is invoked when cardiac arrest has been confirmed, Advanced Cardiac Life Support (ACLS), relies on the monitoring of the electrical activity of the heart on a cardiac monitor. Depending on the type of cardiac arrhythmia, defibrillation and/or medication may be administered. Oxygen is administered and endotracheal intubation may be attempted to secure the airway. At regular intervals, the effectiveness of the interventions on the heart rhythm, as well as the presence of cardiac output, is assessed.
Medications that may be administered include adrenaline (epinephrine), amiodarone, atropine, bicarbonate, calcium, potassium and magnesium, among others. Saline or colloids may be administered to increase the circulating volume.
While CPR is performed (which may involve either manual chest compressions or the use of automated equipment such as the AutoPulse or LUCAS device), members of the team consider eight forms of potentially reversible causes for cardiac arrest, commonly abbreviated as "6Hs & 5Ts" according to 2005/2010 AHA Advanced Cardiac Life Support (ACLS). [1] [2] [3] [4] Note these reversible causes are usually taught and remembered as 4Hs and 4Ts [5] —including hypoglycaemia and acidosis with hyper/hypokalaemia and 'metabolic causes' and omitting trauma from the T's as this is redundant with hypovolaemia—this simplification aids recall during resuscitation.
As of December 2005, advanced cardiac life support guidelines have changed significantly. A major new worldwide consensus has been sought based upon the best available scientific evidence. The ratio of compressions to ventilations is now recommended as 30:2 for adults, to produce higher coronary and cerebral perfusion pressures. Defibrillation is now administered as a single shock, each followed immediately by two minutes of CPR before rhythm is re-assessed (five cycles of CPR).
ALS also covers various conditions related to cardiac arrest, such as cardiac arrhythmias (atrial fibrillation, ventricular tachycardia), poisoning and effectively all conditions that may lead to cardiac arrest if untreated, apart from the truly surgical emergencies (which are covered by Advanced Trauma Life Support).
Many emergency healthcare providers are trained to administer some form of ALS.
In out-of-hospital settings, trained paramedics and some specifically trained emergency medical technicians typically provide this level of care. Canadian paramedics may be certified in either ALS (Advanced Care Paramedic-ACP) or in basic life support (Primary Care Paramedic-PCP). Some Primary Care Paramedics are also trained in intravenous cannulation, and are referred to as PCP-IV (see paramedics in Canada). Emergency medical technicians (EMTs) are often skilled in ALS, although they may employ a slightly modified version of the medical algorithm. In the United States, Paramedic level services are referred to as advanced life Support (ALS). Services staffed by basic EMTs are referred to as basic life support (BLS). Services staffed by advanced emergency medical technicians can be called limited advanced life support (LALS), Intermediate Life Support (ILS), or simply advanced life support (ALS), depending on the State. In the Republic of Ireland, advanced life support (ALS) is provided by an advanced paramedic. Advanced Paramedic (AP) is the highest clinical level (level 6) in pre-hospital care in the Republic of Ireland based on the standards set down by PHECC, the Irish regulatory body for pre-hospital care and ambulance services. In the United Kingdom paramedics are registered healthcare professionals with the Health and Care Professions Council and are qualified to ALS level. This terminology extends beyond emergency cardiac care to describe all of the capabilities of the providers.
In hospitals, ALS is usually given by a team of doctors and nurses, with some clinical paramedics practicing in certain systems. Cardiac arrest teams, or "Code Teams" in the US, generally include doctors and senior nurses from various specialties such as emergency medicine, anesthetics, general or internal medicine.
Emergency medical services (EMS), also known as ambulance services or paramedic services, are emergency services that provide urgent pre-hospital treatment and stabilisation for serious illness and injuries and transport to definitive care. They may also be known as a first aid squad, FAST squad, emergency squad, ambulance squad, ambulance corps, life squad or by other initialisms such as EMAS or EMARS.
Cardiac arrest, also known as sudden cardiac arrest, is when the heart suddenly and unexpectedly stops beating. As a result blood will not be pumped around the body in normal circulation, consciousness will be rapidly lost, and breathing will be abnormal or absent. Without immediate intervention such as cardiopulmonary resuscitation (CPR), and possibly defibrillation, death will occur within minutes.
Cardiopulmonary resuscitation (CPR) is an emergency procedure consisting of chest compressions often combined with artificial ventilation, or mouth to mouth in an effort to manually preserve intact brain function until further measures are taken to restore spontaneous blood circulation and breathing in a person who is in cardiac arrest. It is recommended for those who are unresponsive with no breathing or abnormal breathing, for example, agonal respirations.
An emergency medical technician is a medical professional that provides emergency medical services. EMTs are most commonly found serving on ambulances and in fire departments in the US and Canada, as full-time and some part-time departments require their firefighters to be EMT certified.
A medical emergency is an acute injury or illness that poses an immediate risk to a person's life or long-term health, sometimes referred to as a situation risking "life or limb". These emergencies may require assistance from another, qualified person, as some of these emergencies, such as cardiovascular (heart), respiratory, and gastrointestinal cannot be dealt with by the victim themselves. Dependent on the severity of the emergency, and the quality of any treatment given, it may require the involvement of multiple levels of care, from first aiders through emergency medical technicians, paramedics, emergency physicians and anesthesiologists.
Advanced cardiac life support, advanced cardiovascular life support (ACLS) refers to a set of clinical guidelines for the urgent and emergent treatment of life-threatening cardiovascular conditions that will cause or have caused cardiac arrest, using advanced medical procedures, medications, and techniques. ACLS expands on Basic Life Support (BLS) by adding recommendations on additional medication and advanced procedure use to the CPR guidelines that are fundamental and efficacious in BLS. ACLS is practiced by advanced medical providers including physicians, some nurses and paramedics; these providers are usually required to hold certifications in ACLS care.
Asystole is the absence of ventricular contractions in the context of a lethal heart arrhythmia. Asystole is the most serious form of cardiac arrest and is usually irreversible. Also referred to as cardiac flatline, asystole is the state of total cessation of electrical activity from the heart, which means no tissue contraction from the heart muscle and therefore no blood flow to the rest of the body.
Basic life support (BLS) is a level of medical care which is used for patients with life-threatening illnesses or injuries until they can be given full medical care by advanced life support providers. It can be provided by trained medical personnel, such as emergency medical technicians, and by qualified bystanders.
The Seattle & King County Emergency Medical Services System is a fire-based two-tier response system providing prehospital basic and advanced life support services.
Pulseless electrical activity (PEA) is a form of cardiac arrest in which the electrocardiogram shows a heart rhythm that should produce a pulse, but does not. Pulseless electrical activity is found initially in about 20% of out-of-hospital cardiac arrests and about 50% of in-hospital cardiac arrests.
ABC and its variations are initialism mnemonics for essential steps used by both medical professionals and lay persons when dealing with a patient. In its original form it stands for Airway, Breathing, and Circulation. The protocol was originally developed as a memory aid for rescuers performing cardiopulmonary resuscitation, and the most widely known use of the initialism is in the care of the unconscious or unresponsive patient, although it is also used as a reminder of the priorities for assessment and treatment of patients in many acute medical and trauma situations, from first-aid to hospital medical treatment. Airway, breathing, and circulation are all vital for life, and each is required, in that order, for the next to be effective. Since its development, the mnemonic has been extended and modified to fit the different areas in which it is used, with different versions changing the meaning of letters or adding other letters.
In the United States, the paramedic is a allied health professional whose primary focus is to provide advanced emergency medical care for patients who access Emergency Medical Services (EMS). This individual possesses the complex knowledge and skills necessary to provide patient care and transportation. Paramedics function as part of a comprehensive EMS response under physician medical direction. Paramedics often serve in a prehospital role, responding to Public safety answering point (9-1-1) calls in an ambulance. The paramedic serves as the initial entry point into the health care system. A standard requirement for state licensure involves successful completion of a nationally accredited Paramedic program at the certificate or associate degree level.
The AutoPulse is an automated, portable, battery-powered cardiopulmonary resuscitation device created by Revivant and subsequently purchased and currently manufactured by ZOLL Medical Corporation. It is a chest compression device composed of a constricting band and half backboard that is intended to be used as an adjunct to CPR during advanced cardiac life support by professional health care providers. The AutoPulse uses a distributing band to deliver the chest compressions. In literature it is also known as LDB-CPR.
Advanced Emergency Medical Technician - Critical Care (AEMT-CC) is a former Emergency Medical Services (EMS) certification that was unique to New York. The curriculum for AEMT-CC's in New York was similar to that of the national standard EMT-I/99 but with a broader scope of practice. EMT-CCs are fully classified as Advanced Life Support (ALS) providers within New York and are trained in advanced airway management, including intubation, IV fluid administration, cardiac monitoring, cardiac pacing, and both synchronized and unsynchronized cardioversion, and medication usage/administration in adult and pediatric patients.
The chain of survival refers to a series of actions that, properly executed, reduce the mortality associated with sudden cardiac arrest. Like any chain, the chain of survival is only as strong as its weakest link. The six interdependent links in the chain of survival are early recognition of sudden cardiac arrest and access to emergency medical care, early CPR, early defibrillation, early advanced cardiac life support, and physical and emotional recovery. The first three links in the chain can be performed by lay bystanders, while the second three links are designated to medical professionals. Currently, between 70 and 90% of cardiac arrest patients die before they reach the hospital. However, a cardiac arrest does not have to be lethal if bystanders can take the right steps immediately.
An advanced emergency medical technician is a provider of emergency medical services in the United States. A transition to this level of training from the emergency medical technician-intermediate, which have somewhat less training, began in 2013 and has been implemented by most states. AEMTs are not intended to deliver definitive medical care in most cases, but rather to augment prehospital critical care and provide rapid on-scene treatment. AEMTs are usually employed in ambulance services, working in conjunction with EMTs and paramedics; however they are also commonly found in fire departments and law enforcement agencies as non-transporting first responders. Ambulances operating at the AEMT level of care are commonplace in rural areas, and occasionally found in larger cities as part of a tiered-response system, but are overall much less common than EMT- and paramedic-level ambulances. The AEMT provides a low-cost, high-benefit option to provide advanced-level care when the paramedic level of care is not feasible. The AEMT is authorized to provide limited advanced life support, which is beyond the scope of an EMT.
Emergency medical services in New Zealand are provided by the Order of St John, except in the Greater Wellington region where Wellington Free Ambulance provides these services. Both have a history of long service to their communities, St John since 1885 and Free beginning in 1927, traditionally having a volunteer base, however the vast majority of response work is undertaken by paid career Paramedics. Strategic leadership of the sector is provided by NASO which is a unit within the Ministry of Health responsible for coordinating the purchasing and funding of services on behalf of the Ministry and the Accident Compensation Corporation.
The following outline is provided as an overview of and topical guide to emergency medicine:
The Hs and Ts is a mnemonic used to aid in remembering the possible reversible causes of cardiac arrest. A variety of disease processes can lead to a cardiac arrest; however, they usually boil down to one or more of the "Hs and Ts".
Ukiah Ambulance is now Medstar Ambulance of Mendocino County Inc., a private non-profit ground transport ambulance provider serving central and southern Mendocino County. It is the longest continuously running ambulance service in Mendocino County history. Ukiah Ambulance also developed the first air rescue service in Mendocino County, called FlightCare, which operated for ten years out of the Ukiah Municipal Airport.