Skilled Chicago Heart Attack Misdiagnosis Attorney

Last updated on June 15, 2026

Heart attack misdiagnosis is a grave issue that can lead to serious, sometimes fatal consequences. If you or a loved one has been harmed by a cardiovascular misdiagnosis, a Chicago heart attack misdiagnosis attorney can help you navigate the legal process and pursue the compensation you deserve.

A heart attack misdiagnosis lawyer is a medical malpractice attorney who helps patients or their families pursue legal claims when a heart attack was misdiagnosed or diagnosed too late, resulting in serious injury or death. They guide clients through Illinois medical malpractice law, assist with gathering medical records and expert testimony, and work to secure compensation for medical expenses, lost wages, pain and suffering, and wrongful death. Hiring an experienced heart attack misdiagnosis lawyer ensures victims’ rights are protected and increases the likelihood of a successful claim.

At Morrissey Legal Group, LLC, we understand the profound complexities involved in heart attack misdiagnosis cases. Led by attorney Frank Morrissey, our firm provides deep legal knowledge and seasoned authority in medical malpractice lawsuits. Practicing law since 1993, attorney Frank Morrissey has spent over three decades advocating for injury victims. His relentless representation in medical malpractice cases has earned him prestigious selections to Illinois Super Lawyers and Illinois Leading Lawyers. As an active member of elite professional associations such as the American Board of Trial Advocates and the American Association for Justice , he stands at the forefront of medical negligence litigation, fighting to help victims of hospital malpractice pursue the justice they deserve.

What Constitutes Medical Malpractice In Heart Attack Misdiagnosis Cases?

Medical malpractice occurs when a healthcare professional’s actions deviate from the accepted standard of care, directly causing severe harm, lifelong injury or wrongful death. In the context of cardiac care, seconds count. A heart attack misdiagnosis typically involves a physician’s outright failure to diagnose or a critical delay in recognizing a cardiac event.

Emergency rooms and physicians are legally obligated to act swiftly and accurately when a patient presents with classic or subtle heart attack symptoms, which often include:

• Chest pain or discomfort: Pressure, squeezing, fullness or pain in the center of the chest.
• Dizziness or lightheadedness: Often accompanied by cold sweats, shortness of breath or unexplained nausea.

When doctor errors, laboratory oversights or emergency room chaos result in a misdiagnosis, the consequences are catastrophic – frequently leading to permanent heart muscle damage, unnecessary suffering or preventable fatalities.
To hold a medical provider liable, Illinois law requires plaintiffs to satisfy a standard negligence burden of proof, establishing a definitive breach of the accepted medical standard of care. To build a successful malpractice claim in Illinois, your legal team must prove that a competent, prudent doctor in the same situation would have correctly recognized your symptoms, ordered the appropriate diagnostic tests—such as electrocardiograms (EKGs) or troponin cardiac enzyme panels—and administered immediate, life-saving treatment.

How Long Do I Have To File A Medical Malpractice Lawsuit For Heart Attack Misdiagnosis In Illinois?

Illinois’s statute of limitations for a medical malpractice lawsuit related to heart attack misdiagnosis is typically two years from when the injury was discovered or reasonably should have been discovered. This time limit is crucial, as failing to file within the allowed period may result in the loss of your right to pursue a claim.

What Types Of Compensation Can I Seek In A Heart Attack Misdiagnosis Lawsuit?

If you or a loved one has suffered due to a heart attack misdiagnosis, you may be entitled to various forms of compensation. These can include:

• Medical expenses incurred from the heart attack or its aftermath
• Pain and suffering from physical, emotional and mental distress
• Loss of earnings due to inability to work or diminished capacity
• Loss of companionship or support in the case of wrongful death

A skilled heart attack misdiagnosis attorney will work with you and expert witnesses to help ensure you receive the full amount of compensation necessary to cover both current and future expenses related to your condition.

What Evidence Is Needed To Prove Medical Negligence In A Heart Attack Misdiagnosis Case?

Proving negligence requires establishing that the medical provider involved somehow deviated from the appropriate standard of care that would have been ordinarily expected under the circumstances – and that this deviation directly harmed the patient. Establishing that this deviation directly caused a patient’s harm requires compelling, objective evidence. Your medical records, emergency room intake timelines and diagnostic test results form the foundation of the claim. Furthermore, Illinois law heavily relies on professional opinions from independent, board-certified medical experts. These expert witnesses analyze the records to testify exactly how the provider’s errors fell short of acceptable medical practices and directly triggered a catastrophic cardiac event.

Our Commitment

Our firm is built on a foundation of compassionate client service and an unyielding dedication to justice, while our attorneys take an aggressive approach to holding powerful medical institutions accountable. We know that behind every case file is a family whose life has been upended by negligence. Our dedication to excellence is reflected in our history of recovering significant financial awards for victims of cardiac-related malpractice, including:

• $3.5 million verdict: Awarded to the estate of an 18-year-old boy who suffered a fatal cardiac arrest while hospitalized for presumed pneumonia, which was later discovered to be an undiagnosed enlarged heart. (Estate of Eric Bellows v. Dr. Abed Elkader Dehnee, et al.)
• $2.0 million recovery: Obtained on behalf of a man who suffered a cardiac arrest resulting from an undiagnosed aortic dissection.

How A Heart Attack Misdiagnosis Lawyer Can Help You Seek Compensation

If you believe that you or a loved one has been affected by a heart attack misdiagnosis in Chicago, contact Morrissey Legal Group, LLC, to discuss your case. Call us today at 312-815-5856 or send us an email to schedule your initial consultation.