The nurse is preparing to begin one person cardiopulmonary resuscitation the nurse should first

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Learning Outcome

  • Define what is asystole

  • Describe the management of asystole

  • Know the nursing protocol for asystole

Introduction

Asystole, colloquially referred to as flatline, represents the cessation of electrical and mechanical activity of the heart. Asystole typically occurs as a deterioration of the initial non-perfusing ventricular rhythms: ventricular fibrillation (V-fib) or pulseless ventricular tachycardia (V-tach). Additionally, pulseless electrical activity (PEA) can cease and become asystole. Victims of sudden cardiac arrest who present with asystole as the initial rhythm have an extremely poor prognosis (10% survive to admission, 0 to 2% survival-to-hospital discharge rate).[1][2][3] Asystole represents the terminal rhythm of a cardiac arrest.

In out-of-hospital cardiac arrest, prolonged resuscitation efforts in a patient who presents in asystole are unlikely to provide a medical benefit. Termination of resuscitation efforts should be considered in these patients, in consultation with online medical direction, as allowed by local protocols. The American College of Emergency Physicians (ACEP) and National Association of Emergency Medical Services Physicians (NAEMSP) both recommend emergency medical services systems and have written protocols that allow for termination of resuscitation efforts by emergency medical services providers for a select group of patients in which further resuscitative measures and transport to the local emergency department would be considered futile.[4]

Nursing Diagnosis

No blood pressure, no heart rate, and unresponsive

Causes

The causes of asystole in cardiac arrest are wide and varied. Asystole typically results from decompensation of prolonged ventricular fibrillation arrest. Additionally, attempted defibrillation of ventricular tachycardia or ventricular fibrillation can precipitate asystole. However, any cause of cardiac arrest can eventually result in asystole if not promptly treated. When evaluating a patient with an initial cardiac rhythm of asystole, the reversible causes must be considered. A useful mnemonic taught in Advanced Cardiac Life Support (ACLS) for the reversible causes of cardiac arrest involves the Hs and Ts. The Hs include Hypovolemia, Hypoxia, Hydrogen ion (acidosis), Hypo/Hyperkalemia, and Hypothermia. The Ts include Tension pneumothorax, Tamponade (cardiac), Toxins, and Thrombosis (both pulmonary and coronary). When identified, these cases should be immediately treated.[5][6]

Risk Factors

Each year, approximately 300,000 to 400,000 Americans experience a cardiac arrest outside of the hospital, with the mortality of these cases being extremely high. Data vary in different regions of the country and various studies. Differences range from 4.6% to 11% survival-to-hospital discharge rate.[2][3][7] An extensive surveillance study conducted by the Centers for Disease Control and Prevention (CDC) from 2005 through 2010 evaluated 40,274 out-of-hospital cardiac arrest cases entered into the Cardiac Arrest Registry to Enhance Survival (CARES) system. A total of 31,645 cases had a documented presenting initial rhythm. This is the largest number of cases (45.1%) presented in asystole. However, asystole had the lowest survival rate (2.3%).[8]

Fewer data are available with in-hospital cardiac arrest. This, in addition to a lack of reporting consistency, makes the true number of in-hospital cardiac arrest cases largely unknown. Extrapolation of one large data set estimates approximately 200,000 in-hospital adult cardiac arrest cases per year. This estimate was confirmed in a second study using the Get With The Guidelines-Resuscitation registry. Neither of these studies investigated cardiac rhythms associated with cardiac arrest.[1][9]

Assessment

The findings of cardiac arrest are straightforward. A patient who is in cardiac arrest is unresponsive to all stimuli and is without spontaneous breathing or a palpable pulse. The American Heart Association (AHA) has simplified its basic life support (BLS) cardiac arrest algorithm to encourage minimal compression interruption. The current algorithm has eliminated the “look, listen, and feel” step to check for breathing in an unresponsive patient. Instead, the rescuer should observe to see whether the patient is breathing normally. Emphasis is placed on “gasping” or agonal breathing being abnormal. If the patient is not breathing or only has agonal respirations, the rescuer should check for a carotid pulse for the unresponsive adult or the brachial pulse in the unresponsive infant for no more than 10 seconds. If a pulse is not felt or the rescuer is unsure if a pulse was felt, CPR should be initiated immediately.

Evaluation

Asystole is identified on cardiac monitoring. In asystole, there is no waveform present on the cardiac monitor, only an isoelectric “flat” line. This includes a lack of P-waves, QRS complexes, and T-waves.

Medical Management

Asystole should be treated following current American Heart Association BLS and ACLS guidelines. High-quality CPR is the mainstay of treatment and the most important predictor of favorable outcomes. Asystole is a non-shockable rhythm. Therefore, if asystole is noted on the cardiac monitor, no attempt at defibrillation should be made. High-quality CPR should be continued with minimal (less than five seconds) interruption. CPR should not be stopped to allow for endotracheal intubation. Epinephrine (1 mg via intravenous or intraosseous line) should be delivered every three to five minutes, and treatment of reversible causes addressed. Asystole is considered a terminal rhythm of cardiac arrest. Therefore, discussion of termination of resuscitation should be considered during an in-hospital cardiac arrest in the appropriate clinical picture. Out-of-hospital cardiac arrest patients in asystole should also be considered for the cessation of efforts according to local protocol.[4]

Nursing Management

  • Document

  • Bring ACLS cart to the bedside

  • Monitor vitals

  • Place ECG leads

  • Check pulses

When To Seek Help

As soon as a patient with asystole is identified, the alarm should be sounded for the cardiac arrest team.

Outcome Identification

Successful resuscitation

Monitoring

  • ICU monitoring

  • Oxygenation

  • Neurovitals

  • Ins and outs

  • Pupil response

Coordination of Care

All healthcare workers should be familiar with asystole and its management. Asystole should be treated according to current American Heart Association BLS and ACLS guidelines. High-quality CPR is the mainstay of treatment and the most important predictor of favorable outcomes. Asystole is a non-shockable rhythm. Therefore, if asystole is noted on the cardiac monitor, no attempt at defibrillation should be made. It is mandatory for all healthcare workers who look after patients to be certified in BLS and ACLS in many hospitals.

Risk Management

Sound the alarm as soon as a patient with asystole is identified.

Evidence-Based Issues

All healthcare workers, including the nurse practitioner, should be familiar with asystole and its management. In the hospital, it is usually the nurse who first identifies a patient in asystole and sounds the alarm.

Asystole should be treated according to current American Heart Association BLS and ACLS guidelines. One person should take charge and control the resuscitation. In all hospitals, there are specially assigned teams consisting of different professionals who attend cardiac arrests. The role of the nurse is to document and provide the necessary supplies. High-quality CPR is the mainstay of treatment and the most important predictor of favorable outcomes. Asystole is a non-shockable rhythm. Therefore, if asystole is noted on the cardiac monitor, no attempt at defibrillation should be made. In many hospitals, it is mandatory for all healthcare workers who look after patients to be certified in BLS and ACLS.

After every resuscitation, the ACLS cart should be refurbished with supplies. One member of the nursing staff should always make sure that the supplies and equipment to run a cardiac arrest are in working order and available.

Pearls and Other issues

Pitfalls

Providers should differentiate between asystole and fine ventricular fibrillation, which may respond to defibrillation.

Disclaimer: The views expressed in this article are those of the authors and do not necessarily reflect the official policy or position of the Department of the Navy, Department of Defense, or the United States Government.

I am a military service member. This work was prepared as part of my official duties. Title 17 U.S.C. 105 provides that “Copyright protection under this title is not available for any work of the United States Government.” Title 17 U.S.C. 101 defines a United States Government work as a work prepared by a military service member or employee of the United States Government as part of that person’s official duties.

Review Questions

The nurse is preparing to begin one person cardiopulmonary resuscitation the nurse should first

Figure

Agonal then Asystole Cardiac Rhythm Strip. Contributed by Tammy J. Toney-Butler, AS, RN, CEN, TCRN, CPEN

The nurse is preparing to begin one person cardiopulmonary resuscitation the nurse should first

Figure

Interpretation of electrophysiologic testing. Quiz. Answer to question 1. The EPS establishes the diagnosis of preexcitation due to a left-sided accessory pathway. The two initial sinus beats are not fully preexited while the preexcitation of the third (more...)

References

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Chan PS, Jain R, Nallmothu BK, Berg RA, Sasson C. Rapid Response Teams: A Systematic Review and Meta-analysis. Arch Intern Med. 2010 Jan 11;170(1):18-26. [PubMed: 20065195]

2.

Drennan IR, Lin S, Sidalak DE, Morrison LJ. Survival rates in out-of-hospital cardiac arrest patients transported without prehospital return of spontaneous circulation: an observational cohort study. Resuscitation. 2014 Nov;85(11):1488-93. [PubMed: 25128746]

3.

Morrison LJ, Eby D, Veigas PV, Zhan C, Kiss A, Arcieri V, Hoogeveen P, Loreto C, Welsford M, Dodd T, Mooney E, Pilkington M, Prowd C, Reichl E, Scott J, Verdon JM, Waite T, Buick JE, Verbeek PR. Implementation trial of the basic life support termination of resuscitation rule: reducing the transport of futile out-of-hospital cardiac arrests. Resuscitation. 2014 Apr;85(4):486-91. [PubMed: 24361458]

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Millin MG, Khandker SR, Malki A. Termination of resuscitation of nontraumatic cardiopulmonary arrest: resource document for the National Association of EMS Physicians position statement. Prehosp Emerg Care. 2011 Oct-Dec;15(4):547-54. [PubMed: 21843074]

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Kleinman ME, Goldberger ZD, Rea T, Swor RA, Bobrow BJ, Brennan EE, Terry M, Hemphill R, Gazmuri RJ, Hazinski MF, Travers AH. 2017 American Heart Association Focused Update on Adult Basic Life Support and Cardiopulmonary Resuscitation Quality: An Update to the American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care. Circulation. 2018 Jan 02;137(1):e7-e13. [PubMed: 29114008]

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Panchal AR, Berg KM, Kudenchuk PJ, Del Rios M, Hirsch KG, Link MS, Kurz MC, Chan PS, Cabañas JG, Morley PT, Hazinski MF, Donnino MW. 2018 American Heart Association Focused Update on Advanced Cardiovascular Life Support Use of Antiarrhythmic Drugs During and Immediately After Cardiac Arrest: An Update to the American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care. Circulation. 2018 Dec 04;138(23):e740-e749. [PMC free article: PMC7324904] [PubMed: 30571262]

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Reynolds JC, Frisch A, Rittenberger JC, Callaway CW. Duration of resuscitation efforts and functional outcome after out-of-hospital cardiac arrest: when should we change to novel therapies? Circulation. 2013 Dec 03;128(23):2488-94. [PMC free article: PMC4004337] [PubMed: 24243885]

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McNally B, Robb R, Mehta M, Vellano K, Valderrama AL, Yoon PW, Sasson C, Crouch A, Perez AB, Merritt R, Kellermann A., Centers for Disease Control and Prevention. Out-of-hospital cardiac arrest surveillance --- Cardiac Arrest Registry to Enhance Survival (CARES), United States, October 1, 2005--December 31, 2010. MMWR Surveill Summ. 2011 Jul 29;60(8):1-19. [PubMed: 21796098]

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Merchant RM, Yang L, Becker LB, Berg RA, Nadkarni V, Nichol G, Carr BG, Mitra N, Bradley SM, Abella BS, Groeneveld PW., American Heart Association Get With The Guidelines-Resuscitation Investigators. Incidence of treated cardiac arrest in hospitalized patients in the United States. Crit Care Med. 2011 Nov;39(11):2401-6. [PMC free article: PMC3196742] [PubMed: 21705896]

What is the first priority of cardiopulmonary resuscitation?

Chest compressions are the priority in CPR. If you can't to do rescue breathing (mouth-to-mouth) chest compressions alone may still be life-saving. Try to minimise interruptions to chest compressions until help arrives.

When performing cardiopulmonary resuscitation in which order should the nurse perform the steps?

CPR step-by-step.
Call 911. First, check the scene for factors that could put you in danger, such as traffic, fire, or falling masonry. ... .
Place the person on their back and open their airway. ... .
Check for breathing. ... .
Perform 30 chest compressions. ... .
Perform two rescue breaths. ... .
Repeat..

What is the first step in administering cardiopulmonary resuscitation CPR quizlet?

While holding the airway open, pinch the nose closed with thumb and forefinger..
Take a normal breath. Cover the person's mouth with your mouth..
Give 2 breaths (blow for one second for each). ... .
Try not to interrupt compressions for more than 10 seconds..

Which steps are followed to provide cardiopulmonary resuscitation to a patient quizlet?

Survey scene..
Check response..
Yell for HELP..
Tell a specific person to call 911/get AED..
Check breathing (no more than 10sec).
Remove clothing to bare chest..
30 compressions @ 100-120bpm, 2-2.4 in..
Open airway and give 2 one second breaths..