News | Sudden Cardiac Arrest | January 04, 2023

AHA Issues Statement on Understanding Cardiac Arrest Following Damar Hamlin's Collapse During Monday Night Football

On-site care explanations, possible causes, traumatic stress of responders/observers, resources for learning CPR

While playing in the Buffalo Bills - Cincinnati Bengals game on Monday Night Football on January 2, Bills player Damar Hamlin suffered cardiac arrest after a hit and was administered CPR on the field before being transferred to an area hospital, according to an overnight statement by the Buffalo Bills

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January 4, 2023 — While playing in the Buffalo Bills - Cincinnati Bengals game on Monday Night Football on January 2, Bills player Damar Hamlin suffered cardiac arrest after a hit and was administered CPR on the field before being transferred to an area hospital, according to an overnight statement by the Buffalo Bills.

On-site care explanation

Hamlin reportedly experienced a cardiac arrest – when the heart stops abruptly with little or no warning. Early recognition of cardiac arrest  improves the person’s chance of survival and is key to starting the correct care of CPR and the appropriate use of defibrillation to restart the heart. The on-site medical team evaluated the situation and appeared to quickly remove his safety pads, begin CPR and apply the automated external defibrillator (AED).  

CPR can help keep the heart pumping and  blood flowing to vital organs until an electrical shock from a defibrillator is available to restore the heart to a normal heart rhythm. Then the patient can be safely moved for further medical treatment, supportive care, testing to determine what the cause of the arrest may have been and recovery, including both physical and mental health resources for the person and their family.

Possible causes

Cardiac arrest can have several causes. Since Hamlin collapsed immediately following a tackle on the play, one potential cause could be commotio cordis. Commotio cordis is a rare phenomenon from a sudden blunt impact to the chest causing sudden death in the absence of apparent cardiac damage.[1] The blow to the chest at precisely the wrong time in the cardiac cycle  causes an electrical abnormality in the heart resulting in  an irregular heart rhythm that cannot pump blood to the body.  Immediate CPR and a shock to reset the rhythm can help the heartbeat return to normal function.

Another cause of cardiac arrest that additional tests are likely to attempt to detect or rule out is hypertrophic cardiomyopathy (HCM) or a thickened heart muscle – a more common cause of sudden cardiac death in young people and athletes specifically. The thickened heart can be due to a genetic condition or can be caused by athletic conditioning that thickens the muscles of the heart and can make it more susceptible to an irregular heart rhythm like ventricular fibrillation/tachycardia[2].

Traumatic stress for responders, observers

Witnessing and responding to a cardiac arrest can be a very traumatic event and may cause lingering psychological impact regardless of the outcome. Lay responders and witnesses may need support and resources to help process their experience.

Responders have cited exhaustion, guilt, flashbacks, sleep disturbances, self-doubt, anger, sadness and fear. A positive outcome to performing CPR can mitigate some of the emotional responses; however, psychological responses are wide-ranging and individualized. In situations with a failed resuscitation attempt, PTSD symptom scores were twice as high for responders as those for non-witnesses.

“This was traumatic  for everyone, especially Hamlin’s family and teammates but also for so many others involved and witnessing the event. More than 70% of  cardiac arrests that do not happen in the hospital, occur in a home where access to medical professionals and an AED is not as readily available,” said Mariell Jessup, M.D., FAHA, chief science and medical officer of the American Heart Association. “Recognizing a cardiac arrest, calling 911 immediately, performing CPR and using an AED as soon as it is available are critical for survival. Statistically speaking, it is likely that the person will need to be helped by a family member or a friend in order to survive.”

Having community members trained in CPR and AEDs in public spaces can increase the chances of survival. The rate of bystander CPR in North America is estimated at only 39-44%, and only about 1 in 10 people survive an out-of-hospital cardiac arrest. Improving the rate of bystander CPR is critical to increasing survival from out-of-hospital cardiac arrest (OHCA).

The skill to perform CPR and use a defibrillator are the foundational components of preparing laypeople to respond to cardiac arrest. People also need to feel emotionally prepared to respond and be able to cope with the aftermath of actually performing CPR.[3]

Resources for learning CPR

Each year in the United States, an estimated 350,000 people experience sudden cardiac arrest in the community[4]. Anyone who witnesses a cardiac arrest in the community (i.e., not in a hospital) can perform CPR. Roughly 70% of cardiac arrests that do not happen in the hospital, occur in homes and private residences, therefore, a friend or family member is mostly likely to be the person who needs to take action. CPR, especially if performed immediately, can double or triple a cardiac arrest victim’s chance of survival.

For adults and adolescent children, Hands-Only CPR is an easy-to-learn skill that requires only two steps: call emergency services and push hard and fast in the center of the chest at a rate of 100-120 beats per minute.

For more information: www.heart.org

References:

[1] Circulation: Arrhythmia and Electrophysiology. 2012;5:425–4321 Apr 2012. https://doi.org/10.1161/CIRCEP.111.962712

[2] Sudden deaths in young competitive athletes: analysis of 1866 deaths in the United States, 1980-2006.Circulation. 2009; 119:1085–1092. doi: 10.1161/CIRCULATIONAHA.108.804617

[3] Understanding the Importance of the Lay Responder Experience in Out-of-Hospital Cardiac Arrest: A Scientific Statement From the American Heart Association, https://www.ahajournals.org/doi/10.1161/CIR.0000000000001054

[4] Heart disease and stroke statistics-2022 update: a report from the American Heart Association. Circulation. doi: 10.1161/CIR.0000000000001052

Related Sudden Cardiac Arrest Content: 

Morristown Medical Center’s Matthew Martinez, MD Held First Sports Cardiology Summit for Elite and Professional Athletes

Rising Star Footballers Among Young Athletes to Benefit From New Screening Tool

VIDEO: Should Student Athletes be Screened for Sudden Cardiac Arrest?
American Medical Society for Sports Medicine Position Statement Evaluates Role of ECG in Athletic Cardiovascular Screening 

Cardiac Ultrasound Studies Evaluate Impact of Exercise on Athletes' Hearts 

Tackling Cardiovascular Health Risks in College Football Players 

Sudden Cardiac Arrest Patient Walks to Ambulance Thanks to Wearable Defibrillator


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