
A heart attack, also known as a myocardial infarction, is a life-threatening event resulting from a lack of blood flow to the heart muscle. A swift diagnosis and intervention are critical for positive outcomes and recovery.
Misdiagnosis or delayed diagnosis of a heart attack can have far-reaching consequences, leading to worsened health outcomes or even death.
When the system fails, and a misdiagnosis occurs, it’s essential to understand the legal avenues available for recourse. This guide aims to explore what a heart attack misdiagnosis means, its consequences, and the steps involved in a medical negligence claim for a heart attack misdiagnosis.
Understanding heart attack misdiagnosis
The symptoms of a heart attack can be varied. Typical presentations include:
- Severe chest pain and tightness, occasionally radiating to the left arm and jaw
- Difficulty breathing and breathlessness
- Nausea or vomiting
- Dizziness and light-headedness
However, a heart attack doesn’t always present with these symptoms. In some cases, individuals may experience less ‘typical’ indications, potentially delaying proper diagnosis and necessary treatment.

Heart attack misdiagnosis can occur in several ways:
Confusing symptoms with other conditions
Certain conditions, such as indigestion, musculoskeletal pain, or panic attacks, can resemble heart attack symptoms and lead to delays in proper diagnosis if not thoroughly investigated.
Atypical symptoms may also be confused in patients for whom the signs of a heart attack may show up differently (especially women, the elderly, or people with diabetes).
Failure to conduct appropriate tests
Diagnosing a heart attack involves a multi-pronged approach. Doctors typically:
- Take a detailed medical history to understand symptoms and risk factors.
- Perform a physical examination to check for abnormal heart sounds and other signs.
- Order an electrocardiogram (ECG) to measure the electrical activity of the heart and detect potential abnormalities.
- Conduct blood tests to look for biomarkers indicative of heart damage.
- Perform imaging tests like echocardiograms or angiograms to visualise the heart and its blood vessels.
Overlooking these methods of investigation can result in a misdiagnosis.
Errors in interpreting test results
Incorrectly interpreting the results of ECGs or misreading the levels of cardiac enzymes in blood tests can also lead to missed diagnoses.
Delayed heart attack treatment consequences
Delayed treatment following a heart attack can severely affect long-term health outcomes. Misdiagnosis can lead to:
- Worsened heart function: The heart muscle can be damaged during a heart attack. The longer treatment is withheld, the greater the likelihood of complications and reduced heart function.
- Increased risk of heart failure: Misdiagnosis can put the heart under prolonged strain, increasing the risk of heart failure.
- Higher risk of complications: Untreated heart attacks can trigger arrhythmias, blood clots, and pulmonary edema (fluid in the lungs).
- Prolonged recovery: Even with an eventual diagnosis and treatment, a delayed response can lengthen the recovery process and impact the overall quality of life.
- Psychological distress: Suffering a heart attack with an added delay in effective treatment can cause serious anxiety, depression, or post-traumatic stress disorder (PTSD).
- Death: The most severe consequence of a misdiagnosis is the increased risk of death – timely treatment is crucial to survival when experiencing a heart attack.

Can you claim for medical negligence?
Not every misdiagnosis constitutes grounds for a legal claim. To have a case for claiming compensation, you’ll need to demonstrate that clinical negligence occurred.
If you believe you or a loved one has suffered due to a misdiagnosed heart attack, you will need to prove the following elements:
Breach of duty of care
Healthcare professionals have a duty to provide their patients with a reasonable standard of care. In the case of a heart attack diagnosis, this means assessing potential symptoms thoroughly and undertaking the necessary tests.
You are owed a duty of care and should have been provided with a reasonable standard of medical treatment.
A breach of duty of care occurs when a medical professional’s actions or omissions fall below this reasonable standard. This could include:
- failure to conduct appropriate tests (like ECGs, blood tests for cardiac enzymes)
- misinterpretation of test results
- not considering a patient’s medical history.
Expert evidence is crucial in establishing what the standard of care should have been.
Causation
Showing that the breach of duty directly caused suffering. For example, a delay in treatment may result in long-term damage to the heart.
Proving that the misdiagnosis directly resulted in harm is complex. It involves showing that the outcome would have been significantly different had the correct diagnosis been made and treatment started sooner.
This part of the claim often hinges on medical evidence and expert opinions to reconstruct what the likely outcome would have been with timely intervention.
Damages
To bring a claim, you must demonstrate that you have suffered damages. This may include expenses for additional treatment, loss of income, or reduced earning capacity.

How to start a heart attack misdiagnosis claim
The initial step is to contact a specialist clinical negligence solicitor as soon as possible. They can assess your situation, determine if you have a viable claim, and guide you through the legal process. Here’s what you can expect:
- Initial consultation: At the earliest stage, you’ll share your experiences, medical records, and any related documentation with the solicitor.
- Case evaluation: The solicitor will assess the evidence and determine whether you meet the criteria for a clinical negligence claim.
- Evidence gathering: If you proceed with the claim, the solicitor will collect medical records, expert medical evidence, and other relevant evidence to support your case.
- Negotiation or litigation: Depending on the strength of your case, the solicitor may attempt to negotiate compensation with the responsible healthcare provider or represent you in court if necessary.
Compensation for heart attack negligence
Demonstrating the full extent of the damages incurred is vital for securing appropriate compensation.
Compensation in medical negligence cases aims to cover the costs of additional medical treatment, compensate for pain and suffering, and cover any financial losses (such as lost earnings) resulting from the misdiagnosis.
In severe cases, it may also include provisions for ongoing care and support, especially if the claimant’s ability to work or live independently has been compromised.
Legal recourse for heart attack misdiagnosis
If you believe you or a loved one might be the victim of a misdiagnosed heart attack, do not suffer in silence; it’s important to take appropriate action.
Seek independent medical advice to rectify your treatment and ensure your long-term wellbeing. You may then wish to consider consulting a solicitor specialising in clinical negligence. They can offer tailored advice, represent your interests, negotiate settlements, or represent you in court.
At Devonshires Claims, our experienced team of clinical negligence solicitors understands the sensitive and complex nature of negligence claims, including those related to clinical negligence for heart issues.
We are committed to supporting you through every step of the process: from the initial consultation to securing the compensation you deserve, on a ‘no win no fee‘ basis.
Begin a free case evaluation today by getting in touch with the team at Devonshires Claims. Call 0333 016 5180, email [email protected], or use our online contact form.