Peri-Arrest Protocols (Nursing Guide)
Peri-arrest care means recognizing serious deterioration before cardiac arrest, calling for help early, and taking actions within your training and role. Nurses assess the patient, support breathing and circulation, monitor changes, communicate clearly, and follow current facility protocols. If the patient becomes unresponsive and is not breathing normally, activate the cardiac-arrest response and begin actions allowed by your training.
A patient can look unwell before their heart stops. A sudden change in alertness, breathing, blood pressure, or skin color may be an early warning. In a busy unit, it can be tempting to wait for another set of vital signs or finish a task first. If you are worried, raise the concern and escalate promptly.
This guide describes a general nursing approach to peri-arrest deterioration. It is educational, not a substitute for clinical judgment, current American Heart Association (AHA) guidance, your state’s nurse-practice rules, or your facility’s protocol. Follow the local pathway for who to call, what actions are permitted, and which equipment to use.
Recognize deterioration and know your role
Peri-arrest describes a period when a patient is at serious risk of cardiac arrest or is rapidly becoming unstable. It is not one universal diagnosis with a single set of signs. Nurses should notice changes from the patient’s usual state, assess promptly, and use the facility’s escalation process rather than waiting for a specific label.
Warning signs that need prompt attention
Look for a combination of findings and changes over time. Concerning signs may include:
- Low or falling blood pressure, or other signs of poor circulation
- New confusion, reduced alertness, or difficulty waking
- Severe or worsening breathing difficulty, abnormal breathing, or a falling oxygen reading
- Chest discomfort that may suggest reduced blood flow to the heart
- Signs of shock, such as cool or clammy skin, weak pulses, or worsening responsiveness
- New or worsening signs of acute heart failure, such as breathing difficulty or fluid congestion
- A concerning change in heart rate or rhythm, especially with symptoms
A single measurement may not tell the whole story. Check whether the reading fits the patient’s appearance, compare it with recent results, and repeat a measurement when appropriate. Do not let repeating observations delay urgent help.
BLS and ACLS: different levels of response
Basic Life Support (BLS) focuses on recognizing cardiac arrest, activating the emergency response system, providing CPR, and using an automated external defibrillator (AED) when indicated and available. Advanced Cardiovascular Life Support (ACLS) adds advanced assessment and interventions for trained, authorized clinicians. The exact tasks allowed depend on training, role, state rules, and facility policy.
A nurse who is not ACLS-trained can still play a vital role: identify the emergency, call for help, bring equipment if assigned, provide actions within BLS training, and communicate changes. Do not perform an intervention just because it appears in an algorithm if it is outside your scope or local protocol.
First response: assess, call, support, reassess
A first response is the sequence of actions that helps a team understand how sick the patient is and get the right support to the bedside. Use your facility’s emergency pathway. In general, stay with the patient, call early, assess immediate threats, and keep reassessing while help is on the way.
A practical first-response sequence
- Check immediate safety and responsiveness. If the patient is unresponsive, check for normal breathing and activate the appropriate emergency response. For a suspected cardiac arrest, follow current BLS training and facility procedure. A trained healthcare provider checking a pulse should follow current BLS guidance, including its time limit.
- Call for help. Use the unit’s rapid response or emergency call system as the situation requires. State the location and the main concern. If the patient appears to be in cardiac arrest, activate the cardiac-arrest response without delay.
- Assess using a structured approach. ABCDE means Airway, Breathing, Circulation, Disability (level of consciousness and other neurologic concerns), and Exposure (a focused check for relevant findings while preserving privacy and warmth). Address immediate threats within your role and local protocol.
- Gather focused information. Check vital signs, oxygen saturation, level of consciousness, relevant symptoms, and available monitor data. Review recent changes, known conditions, allergies, medications, and any advance-care information that is relevant and available.
- Support and monitor. Provide care allowed by your training and protocol. Make sure monitoring and emergency equipment are available as appropriate. Do not leave an unstable patient alone unless necessary to summon help.
- Reassess and communicate. Repeat observations as the situation changes. Tell the responding clinician or team what has improved, worsened, or stayed the same.
What to say when escalating
A brief, structured message can help the receiving clinician act quickly. SBAR stands for Situation, Background, Assessment, and Recommendation. For example: “I’m calling about a patient whose breathing and blood pressure have worsened. They were admitted for . I’m concerned they are becoming unstable. Please come now; the latest observations are .”
Use exact observations when available, rather than vague phrases such as “they look bad.” Close the loop: name who will perform each task, ask for confirmation when needed, and report when it is complete. If the response is delayed and you remain concerned, escalate again through the facility’s chain of command.
Team roles, monitoring, and protocol alignment
A peri-arrest response works best when team members know who is leading, who is assessing, and who is communicating. Roles vary by unit and staffing. The team leader coordinates decisions; other members may manage monitoring, obtain supplies, document events, or contact additional support. Follow local role assignments and speak up if a task is unclear.
| Situation | Nursing priorities | Escalation and communication |
|---|---|---|
| Patient is deteriorating but responsive | Stay with the patient; assess ABCDE; obtain and trend observations; support care within role | Call the rapid response or equivalent pathway when indicated; report the change and request urgent review |
| Patient is unresponsive but breathing normally | Activate the appropriate urgent response; assess and monitor; follow local instructions for positioning and ongoing care | Report responsiveness and breathing status; keep reassessing |
| Patient is unresponsive and not breathing normally | Activate the cardiac-arrest response; begin BLS actions within current training; use an AED when available and follow its prompts | State clearly that cardiac arrest is suspected; continue team communication and follow the response protocol |
| Monitor shows an alarming rhythm, but the patient appears stable | Assess the patient, check signal quality and equipment as appropriate, and compare with symptoms | Notify the appropriate clinician based on findings and policy; do not treat a monitor display in isolation |
A monitor is a tool, not a substitute for assessing the patient. Check whether the signal is credible and whether the patient has symptoms or signs of instability. If there is a mismatch between the screen and the patient, promptly seek help and follow unit policy.
Why local protocols matter
AHA algorithms give a framework for resuscitation care, but a bedside guide cannot replace the current algorithm or facility procedure. Local rules may set the activation number, team roles, documentation process, equipment location, and which interventions a nurse may perform. State nurse-practice rules and employer policy also shape scope.
For training materials, record the source and review date, then have nursing faculty or a clinical educator check the content against current guidance and local policy. In clinical care, use the current approved version available at your facility. Do not rely on an old handout or an online summary when a patient is deteriorating.
Practice, documentation, and learning from scenarios
Simulation lets learners practice recognition, communication, and role clarity before a real emergency. It does not replace clinical supervision or competency checks. Programs and employers set their own prerequisites, clearance rules, and training requirements. Confirm what applies to your placement or job, and ask a clinical educator to review the unit’s escalation pathway.
Two brief teaching scenarios
Scenario A: worsening breathing and alertness. A patient becomes harder to wake and is breathing with more effort than earlier. The nurse stays with the patient, calls the rapid response team according to local policy, assesses and reports current findings, and continues reassessment. The key lesson is to act on deterioration and the trend, not wait for a single threshold or a complete set of observations.
Scenario B: collapse with abnormal breathing. A patient collapses and is unresponsive, with breathing that is absent or not normal. The nurse activates the cardiac-arrest response and begins actions consistent with current BLS training and facility procedure. Team members take assigned roles, use available equipment as directed, and communicate changes. The key lesson is that suspected arrest needs an immediate emergency response.
These scenarios are examples for learning, not treatment orders. In simulation, practice calling for help, giving a concise report, confirming task assignments, and reassessing after each major change. Ask your instructor or educator to test the scenario against the current local protocol.
Document the event clearly
Record observations and actions according to facility policy. Include relevant times, findings, calls made, who was notified, instructions received, interventions performed, and the patient’s response. Use the approved record and documentation standards. If a detail is uncertain, do not guess; follow policy for correcting or completing the record.
After the event, a debrief can identify what worked and what needs practice. Focus on system learning, such as whether the call pathway was clear, equipment was available, and roles were understood. Follow your facility’s rules for incident reporting and confidential information.
Key takeaways
The safest general approach is to recognize change early, call for help promptly, assess in a structured way, act within your training and scope, and reassess. Use clear communication and report specific findings. For suspected cardiac arrest, follow current BLS training and the facility’s emergency procedure.
Before clinical practice, learn the unit’s response numbers, equipment locations, role expectations, and documentation process. Check that training requirements are current for your role. When a bedside situation does not match a guide, get help and follow the approved local protocol.
Frequently asked questions
What does peri-arrest mean in nursing?
It describes serious deterioration that may place a patient at risk of cardiac arrest. It is a warning state, not one universal diagnosis or fixed set of signs.
When should a nurse call a rapid response team?
Call when the patient is deteriorating or meets your facility’s activation criteria. If you are seriously concerned, use the escalation pathway rather than waiting for a specific reading.
What should a nurse assess first?
Check responsiveness and immediate threats to airway, breathing, and circulation. Then use a structured assessment, such as ABCDE, while activating help as needed.
How is a rapid response different from a cardiac-arrest response?
A rapid response is generally used for serious deterioration before arrest. A cardiac-arrest response is activated when arrest is suspected. The exact names and criteria vary by facility.
What should I do if the patient is unresponsive and not breathing normally?
Activate the cardiac-arrest response and begin actions allowed by your current BLS training and facility procedure. Use an AED when available and follow its prompts.
Can a nursing student perform ACLS interventions?
Only if the action is allowed by the student’s training, supervision, state rules, and clinical-site policy. Students should promptly alert their instructor and the clinical team.
Should I rely on a monitor alarm to decide whether a patient is unstable?
No. Assess the patient as well as the monitor, and check whether the signal is reliable. Escalate promptly if the patient shows concerning signs or you remain worried.
What information belongs in an escalation call?
Give the patient’s location, what changed, relevant background, current assessment findings, and the help needed. Use SBAR if it supports a clear, concise report.
Are peri-arrest thresholds the same in every hospital?
No. Activation criteria and escalation pathways can differ by facility and patient group. Follow your current local protocol and any applicable clinical guidance.
How often should a nursing guide be reviewed?
Review it against current AHA guidance and facility policy before use, and whenever either changes. A faculty member or clinical educator should verify that the guide matches local practice.
(This article was written by one of our staff writers, Alan Westbrook. Visit our Meet the Team page.)
