The long term side effects of CPR are rarely discussed in basic classes, yet they shape recovery for survivors and the emotions of rescuers long after the ambulance leaves. Cardiopulmonary resuscitation is a forceful intervention that keeps blood moving when the heart has stopped. It saves lives, but it also bruises ribs, strains lungs, and exposes the brain to oxygen shortages. This article explains what happens afterward, which problems are common, which are rare, and how people recover.
Start with perspective. In the United States, roughly 350,000 people suffer an out-of-hospital cardiac arrest each year, and only about 10 percent survive to hospital discharge. Survival chances fall by roughly 7 to 10 percent for every minute that passes without help. A cracked rib is painful, but it heals. Cardiac arrest does not forgive delay. Understanding side effects should make you a better-informed rescuer, never a hesitant one, because the alternative to imperfect compressions is almost always death.
Side effects fall into three groups. Mechanical injuries come from compressions and include rib and sternum fractures, bruised lungs, and occasionally liver or spleen damage. Neurological and cardiac injuries come from the arrest itself, when the brain and heart go without oxygen, and they often dominate long-term outcomes. Psychological effects include post-traumatic stress, anxiety, depression, and fatigue, affecting survivors, family members, and the bystanders who performed compressions. Each group follows a different timeline and needs a different kind of follow-up care.
Training shapes how well people handle all of this. A thorough course covers technique, the ACLS algorithm for advanced responders, and the realities of aftercare. If you want a broader foundation, our guide to cpr medical knowledge explains how instructors teach these topics and how life support training is structured. Knowing what correct compressions look like also reduces needless injury, since depth and rate errors are linked to more complications. Good form protects the patient and improves the odds of survival.
A few terms recur throughout this guide. AED stands for automated external defibrillator, the portable device that analyzes heart rhythm and delivers a shock when needed. Life support refers to the layered care ranging from basic life support, which lay rescuers perform, to advanced cardiac life support delivered by clinicians. Respiratory rate, the number of breaths per minute, becomes critical in the minutes and hours after resuscitation, because both too-fast and too-slow breathing can harm a recovering brain.
You may also notice unrelated search results when researching this topic. Phrases such as cpr cell phone repair refer to a consumer electronics repair franchise, not cardiopulmonary resuscitation, so ignore them when looking for medical guidance. Likewise, a cpr index in this context simply means a quick-reference summary of steps and numbers, which the statistics panel below provides. Stick to sources tied to the American Heart Association, the American Red Cross, or your state health department for clinical facts.
Finally, a note on scope. This article is educational and does not replace medical advice. If you or someone you know has survived cardiac arrest, a cardiologist, neurologist, and rehabilitation team should guide recovery. If you performed CPR and feel shaken weeks later, that response is common and treatable. Read on for specific numbers, timelines, warning signs, and practical steps that help both survivors and rescuers return to normal life with confidence and a realistic understanding of what comes next.
Survivors are monitored in intensive care. Teams stabilize heart rhythm, oxygen, blood pressure, and temperature, and may use targeted temperature management. Doctors avoid judging brain outcome too early because sedation and swelling can hide true neurological function.
Imaging checks for rib, sternum, lung, and organ injury. The cause of the arrest is investigated, and many patients receive an implantable defibrillator. Pain control and breathing exercises prevent pneumonia while chest injuries begin to heal.
Rib and sternum fractures typically knit within six to eight weeks. Soreness fades gradually, while fatigue, anxiety, and sleep problems may appear. Cardiac rehabilitation usually begins in this window, with supervised walking and education.
Many survivors are assessed for memory, attention, and processing problems. Return-to-work plans are made, often gradually. Counseling for anxiety, depression, or post-traumatic stress is most helpful when started early in this period.
Most physical injuries are long healed, but fatigue and subtle thinking changes can linger. Ongoing cardiology visits, medication review, and peer support help survivors rebuild routines and confidence for the long term.
The most common physical consequence is rib fracture. Effective adult compressions require a depth of at least 2 inches, but no more than 2.4 inches, which is a substantial force on the chest wall. Studies of survivors report rib fractures in roughly a third of cases, while autopsy studies report much higher rates. Older adults and people with osteoporosis are most vulnerable. Most fractures cause pain with breathing, coughing, and laughing, and they typically heal within six to eight weeks.
Sternal fractures are less common but still significant, appearing in a meaningful minority of resuscitations. Pain is felt at the center of the chest and can be mistaken for a new heart problem, so survivors should report it to their care team rather than assume it is cardiac. Treatment is mostly pain control and protecting the chest while it heals. Clinicians often use acetaminophen, anti-inflammatory drugs when safe, and careful breathing exercises to avoid pneumonia.
Bruised lungs, called pulmonary contusions, and pneumothorax, where air leaks into the space around the lung, can occur when broken ribs or sustained force injure lung tissue. Symptoms include sharp chest pain, shortness of breath, and a rapid respiratory rate. Hospitals usually detect these with chest imaging. Small air leaks may resolve on their own, while larger ones need a chest tube. Most patients recover lung function fully, though some feel breathless during exertion for several weeks.
Abdominal injuries are uncommon but serious. Misplaced hand position, especially pressing too low near the bottom of the breastbone, can injure the liver, spleen, or stomach. Rescuers should place the heel of one hand on the center of the chest, on the lower half of the breastbone, with the other hand on top. Hospital teams screen for internal bleeding after resuscitation, and survivors who develop belly pain, dizziness, or swelling days later need urgent evaluation.
Compressions can also bruise the heart muscle itself, and defibrillation shocks can cause minor skin burns where the pads were placed. Survivors sometimes notice redness or blistering that looks like a mild sunburn. These burns respond to simple wound care. Chest soreness, palpitations, and fatigue are also common in the first weeks. They do not necessarily signal a second arrest, but any fainting, racing heartbeat, or worsening chest pain should prompt a call to a doctor or 911.
Pain management matters more than people expect. Shallow breathing to avoid pain can lead to collapsed airways and pneumonia, which is a real cause of readmission. Hospitals often give survivors an incentive spirometer, a handheld device that encourages deep breaths. Splinting the chest with a pillow when coughing helps. Walking early, within doctor guidance, supports lung recovery. Most survivors return to routine daily activity within two to three months, although cardiac rehabilitation may extend this timeline for several more months.
Risk varies with age and body type. Infants and children have more flexible chests, so rib fractures are less frequent, but organ injuries can still occur with improper technique. Older adults with brittle bones face the highest fracture risk, and multiple fractures can create a flail segment that makes breathing difficult. Rescuers should never reduce depth out of fear, since shallow compressions fail to circulate blood. Following guideline depth gives patients their best chance, and fractures are treated as an acceptable trade-off.
Adults carry the highest risk of compression injuries because their chests are stiffer and calcified cartilage breaks more easily with age. Guidelines call for compressions at least 2 inches deep, at 100 to 120 per minute, with full chest recoil. Rib fractures are expected, not a sign of failure, and rescuers should continue rather than stop to check the damage.
Long-term effects in adults are driven mostly by the cause of arrest. Heart disease, existing lung problems, and age shape recovery more than rib pain does. Adults often need an implantable defibrillator, cardiac rehabilitation, and medication changes, and many report fatigue and memory issues that last months after the physical injuries have healed.
Infant CPR uses two fingers or two encircling thumbs on the lower half of the breastbone, pressing about 1.5 inches, or one-third of chest depth, at 100 to 120 per minute. Children have flexible rib cages, so fractures occur less often, though liver injury can happen when pressure lands too low. Gentle, accurate placement matters more than force.
Most pediatric arrests start with breathing failure rather than a heart rhythm problem, so oxygen delivery is central. Rescue breaths for infants and children are given every two to three seconds, about 20 to 30 breaths per minute. Long-term outcomes depend heavily on how long the brain lacked oxygen, and pediatric rehabilitation teams monitor development for years.
Advanced life support adds drugs, airways, and monitoring to basic CPR. The ACLS algorithm guides adult teams through rhythm checks, shocks, epinephrine, and treatment of reversible causes. PALS certification teaches the pediatric equivalent, with weight-based dosing and age-specific airway choices. These tools raise survival odds but also add risks, such as airway trauma, medication effects, and prolonged intensive care stays.
After circulation returns, post-arrest care becomes the focus. Teams avoid both low and excessive oxygen, keep blood pressure adequate, control temperature, and look for the cause of the arrest. This coordinated care reduces brain injury and is a major reason hospital survivors often do better than those resuscitated only in the field. Both certifications require renewal every two years.
Fractured ribs are an expected result of effective compressions, not a mistake. Clinicians treat them as an acceptable cost of keeping blood flowing to the brain. Never reduce compression depth out of fear of injury, and tell emergency staff what you did so they can look for hidden damage.
The brain is the organ most at risk after cardiac arrest. Brain cells begin to suffer within about four to six minutes without oxygen, and even after circulation returns, swelling and chemical changes can cause hypoxic-ischemic brain injury. Outcomes range from complete recovery to coma. Hospitals now use targeted temperature management, controlling fever for patients who remain unresponsive, to protect the brain. Doctors usually wait several days before judging prognosis because early signs can mislead.
Among survivors who leave the hospital, many report subtle cognitive problems. Research suggests that a large share experience difficulties with memory, attention, processing speed, or executive function, even when they appear physically healthy. People describe losing words, struggling with multitasking, or tiring quickly during reading. Because these deficits are invisible, employers and families may misunderstand them. A formal neuropsychological evaluation, often recommended three to six months after discharge, documents strengths and weaknesses and supports return-to-work plans.
Fatigue is another long-term issue. Survivors commonly describe a heavy tiredness that sleep does not fix, sometimes lasting a year or longer. Causes include brain injury, heart disease, medication effects, deconditioning, and poor sleep. Pacing activities, scheduling rest, and gradually increasing exercise under supervision all help. Cardiac rehabilitation programs, which combine monitored exercise with education, improve stamina and confidence and are recommended for many survivors. Ask your cardiologist for a referral before you leave the hospital.
Mental health effects are surprisingly frequent. Studies estimate that roughly one in four to one in three cardiac arrest survivors experience symptoms of anxiety or depression, and a meaningful share show signs of post-traumatic stress disorder. Fear of another arrest, flashbacks to hospital care, and loss of independence all contribute. Many people with implanted defibrillators also worry about shocks. These feelings are medical symptoms, not weakness. Counseling, cognitive behavioral therapy, peer groups, and sometimes medication relieve them.
Family members face their own strain. Partners often become caregivers overnight and may develop anxiety, sleep problems, or hypervigilance whenever the survivor feels unwell. Children may fear that the parent could die again. Family therapy and survivor support communities, including those organized by hospital programs and national cardiac organizations, give practical tools. Understanding personality changes, irritability, or apathy as possible effects of brain injury, rather than relationship problems, helps households respond with patience instead of conflict.
Medical follow-up should be structured. Typical aftercare includes a cardiology review to find the cause of the arrest, rhythm monitoring, and often an implantable cardioverter-defibrillator when the risk of another dangerous arrhythmia is high. Medication reviews, blood pressure and cholesterol control, and lifestyle changes follow. Neurology and rehabilitation services address thinking and movement. Driving restrictions are common for several months after cardiac arrest, and your physician will advise when it is safe to resume.
Survival numbers tell part of the story. Roughly 10 percent of out-of-hospital arrest patients survive to discharge, and most of those who do have good neurological function, though a minority live with significant disability. Hospital arrests have better survival, around 25 percent. Quick bystander CPR and early AED use can double or triple the odds of survival. Those figures mean side effects are, in a real sense, a sign that resuscitation succeeded and that a person got a second chance.
Rescuers deserve attention too. Many people who perform CPR feel intense emotions afterward, particularly when the patient dies. Guilt, replaying the event, trouble sleeping, and irritability are common in the first days. Most reactions fade within a few weeks as the mind processes the event. Talking to a trusted friend, a faith leader, or a counselor helps. If symptoms persist beyond a month or interfere with work, professional support is warranted, and many employers offer confidential assistance programs.
It helps to remember what a good outcome looks like. Even when a patient does not survive, you gave them the only chance available and you also gave family members the knowledge that someone tried. Good Samaritan laws in all 50 states protect lay rescuers who act in good faith from most liability. Those protections vary in detail but generally cover reasonable efforts without gross negligence. Knowing this removes one common worry that keeps bystanders from acting.
Position matters after the heart restarts. If an unresponsive person is breathing normally and has a pulse, the recovery position, lying on the side with the top leg bent and head tilted slightly back, keeps the airway open and lets fluids drain. Do not use it if the person is not breathing or has no pulse, because compressions come first. Recheck breathing continuously until emergency responders arrive and take over care.
Respiratory rate is a key vital sign here. Normal adults breathe about 12 to 20 times per minute. During rescue breathing for an adult with a pulse but no breathing, give one breath every six seconds, about 10 per minute. For infants and children, give one breath every two to three seconds, roughly 20 to 30 per minute. Overventilating raises chest pressure, reduces blood return to the heart, and increases the risk of vomiting and stomach inflation.
Infant CPR deserves special mention because technique differs. Use two fingers, or two thumbs encircling the chest when two rescuers are present, to compress about one-third the depth of the chest, roughly 1.5 inches, at 100 to 120 per minute. Use a 30 to 2 ratio for a single rescuer and 15 to 2 for two rescuers. Because most infant arrests stem from breathing problems, rescue breaths matter more than in adults. Gentle but firm technique limits injury risk.
Professional training builds confidence. Basic life support courses from the American Heart Association and American Red Cross follow nationally recognized guidelines. Providers such as the National CPR Foundation offer online certification options, but employers and licensing boards vary in what they accept, so confirm acceptance before paying. Healthcare workers typically need hands-on skills sessions. Advanced courses, including PALS certification for pediatric emergencies and ACLS for adults, require a current BLS card and a skills test.
The ACLS algorithm guides clinicians through cardiac arrest: confirm arrest, start high-quality CPR, attach a monitor or defibrillator, shock shockable rhythms such as ventricular fibrillation, give epinephrine, consider amiodarone, and treat reversible causes. After return of spontaneous circulation, post-arrest care targets oxygen saturation, blood pressure, and temperature. These steps explain why hospital recovery starts immediately and why survivors receive intensive monitoring long before they reach the long-term recovery phase at home.
Practical preparation lowers both fear and injury. Take a hands-on course, ideally with a manikin that gives feedback on depth and rate. Many learners compress too shallowly in the real world because the force feels alarming. Practice until 100 to 120 compressions per minute feels natural, using the beat of a familiar song if helpful. Refresh your skills every two years, which is the standard certification cycle, or sooner if you feel rusty or unsure.
Learn your AED. Remember that AED stands for automated external defibrillator, and modern units speak step-by-step instructions. Turn it on, attach pads to bare skin on the upper right chest and lower left side, let it analyze, and press the shock button only when advised. Everyone must stand clear during analysis and shock. Using an AED early is among the biggest factors in improving survival from shockable rhythms, and it does not require medical training.
Know when to call for help. Check for responsiveness by tapping and shouting, look for absent or abnormal breathing for no more than ten seconds, then call 911 or ask a bystander to call and fetch an AED. If you are alone with a phone, put it on speaker and let the dispatcher coach you. Dispatchers are trained to guide hands-only CPR and will help you keep pace until paramedics arrive.
Protect yourself and the patient afterward. Tell paramedics exactly what you did, how long compressions lasted, and whether an AED shock was delivered. Share known medical history or medications. Ask the hospital which unit the patient was taken to if you wish to follow up. Write down details while they are fresh, because memory fades and specifics may matter for care. Then take care of your own needs by eating, resting, and talking about the experience.
If you survived cardiac arrest, build a recovery plan. Keep every follow-up appointment, take medication as prescribed, and ask for cardiac rehab. Track symptoms in a notebook, including pain, breathlessness, mood, and memory problems. Bring this log to appointments. Increase walking gradually, avoid heavy lifting until your doctor approves, and use a pillow for splinting while coughing. Do not hide emotional struggles, since early treatment for anxiety and depression shortens recovery and improves quality of life.
Use quality study resources to stay sharp. Practice questions reinforce compression rates, depths, ratios, and AED steps, and they expose weak spots before your certification exam. Review adult, child, and infant differences separately, since mixing them is a common mistake. Free quizzes on this site cover basic CPR and AED usage, and a short daily session is more effective than a long cram session the night before a class begins.
Finally, keep the big picture in mind. The long-term side effects described here are real, but most are manageable and far preferable to the alternative. Every certified rescuer increases the chance that a neighbor, coworker, or family member survives. Learn the technique, stay current, and act without hesitation. Then support survivors during the slow months after discharge, because recovery continues well past the day someone leaves the hospital and returns home.