Ontario Medical Malpractice Lawyers
Serious Medical Negligence Claims Across Ontario
Medical malpractice is a personal injury claim involving negligent medical care. The injury is not caused by a collision, unsafe property, defective product, or recreational accident. It is caused by medical treatment that fell below the required standard of care and caused harm that likely would have been avoided with proper care.
Foster Injury Law is able to represent people in serious medical negligence claims as part of our broader work as Ontario personal injury lawyers for clients with life-changing injuries.
Medical malpractice claims are difficult. A bad result, delayed recovery, missed diagnosis, surgical complication, or unexpected death does not automatically mean a doctor, nurse, hospital, clinic, or other health-care provider was negligent.
To succeed, the claim usually has to prove two things:
the care fell below the standard expected of a reasonably competent health-care provider in the circumstances;
that failure caused injury, loss, or death.
Foster Injury Law reviews serious medical negligence claims across Ontario, including delayed diagnosis, surgical negligence, emergency room negligence, hospital negligence, medication errors, birth-related injuries, infection and sepsis claims, brain injury, catastrophic injury, amputation, spinal cord injury, and wrongful death.
What Is Medical Malpractice in Ontario?
Medical malpractice occurs when a health-care provider fails to meet the required standard of care and that failure causes injury or death.
The defendant could be a doctor, surgeon, nurse, hospital, clinic, pharmacist, or another regulated health-care professional or institution.
The legal issue is not if the treatment was perfect. Medicine involves judgment, uncertainty, risk, and complications. The issue is whether the care fell below what a reasonably competent provider would have done with the information available at the time.
Standard of Care in Medical Negligence Claims
The standard of care of a medical practitioner depends on the provider’s role, specialty, and the circumstances of the treatment.
family doctors are not judged the same way as a neurosurgeon. An emergency physician is not judged the same way as an obstetrician. A nurse, pharmacist, radiologist, anesthesiologist, and surgeon each has different responsibilities.
Usually the standard of care needs to be proven through expert evidence. Expert reviews the medical records and explains what the defendant should have done based on the patient’s symptoms, test results, history, presentation, urgency, and available information.
The Supreme Court of Canada discussed professional standards and expert evidence in Ter Neuzen v. Korn. The case is often cited in medical negligence claims because it explains why courts usually need medical experts to assess professional standards, while also recognizing that accepted medical practice is not automatically immune from negligence.
Causation in Medical Malpractice Claims
Proving a breach of the standard of care is not enough. The plaintiff also has to prove causation. In most cases, the question is whether the injury would have been avoided but for the defendant’s negligence.
Causation is often the hardest issue in medical malpractice cases. The defence may argue that the patient would have suffered the same outcome even with proper care. That argument often appears in delayed diagnosis, cancer, stroke, heart attack, infection, birth injury, and surgical cases.
The Supreme Court of Canada has repeatedly dealt with causation in medical negligence and personal injury cases. In Snell v. Farrell, the Court confirmed that causation is decided using ordinary principles, but that courts can draw reasonable inferences from the evidence in medical negligence cases.
In Clements v. Clements, the Court confirmed that the ordinary test is the but-for test, with material contribution reserved for exceptional cases. In Benhaim v. St-Germain, the Court addressed causation in a delayed diagnosis case and confirmed that statistics alone are not enough without a connection to the specific facts of the patient’s case.
That is why medical malpractice claims need careful causation evidence. The evidence has to connect the negligent care to the injury. It is not enough to show that something went wrong.
Informed Consent Claims
Some medical malpractice claims involve informed consent. This means that a patient can consent to treatment but still argue that the consent was not legally informed. The issue is whether the patient was properly told about material risks, reasonable alternatives, and important information needed to make the decision.
One leading Canadian case is Reibl v. Hughes. The Supreme Court of Canada treated informed consent as a negligence issue and focused on whether a reasonable person in the patient’s position would have declined the treatment if properly informed.
Informed consent claims arise after surgery, injections, procedures, obstetrical care, medication decisions, anesthesia, or other treatment where a significant risk was not properly explained.
Delayed Diagnosis and Misdiagnosis
Delayed diagnosis claims can involve cancer, stroke, heart attack, infection, sepsis, meningitis, fractures, spinal cord compression, cauda equina syndrome, internal bleeding, pulmonary embolism, and other serious conditions.
The legal question is not about whether the diagnosis was missed, only. The issue is whether the provider responded reasonably to the information available at the time.
Important evidence can include symptoms, vital signs, lab results, imaging, specialist referrals, triage notes, discharge instructions, follow-up plans, differential diagnosis, and whether the patient should have been sent for more testing or urgent care.
Causation is usually contested. The defence may argue that earlier diagnosis would not have changed the outcome. The plaintiff’s evidence must explain what likely would have happened with proper diagnosis and treatment.
Surgical Negligence
A bad surgical result does not automatically prove negligence.
Surgery carries risks even when performed properly. A legal claim requires evidence that the surgeon, anesthesiologist, nurse, hospital, or other provider failed to meet the required standard of care.
Surgical negligence claims can involve wrong-site surgery, nerve injury, bowel injury, vascular injury, retained foreign objects, failure to respond to post-operative complications, inadequate monitoring, infection, compartment syndrome, anesthesia injury, or delay in returning a patient to surgery.
Medical records are important, but they rarely tell the whole story by themselves. Operative notes, anesthesia records, nursing notes, imaging, lab results, consults, post-operative monitoring, discharge instructions, and expert opinion all need to be reviewed.
Emergency Room and Hospital Negligence
Emergency room and hospital negligence claims often involve timing.
The issue is whether the patient was triaged, assessed, monitored, investigated, treated, admitted, discharged, or transferred properly.
These cases can involve stroke, heart attack, sepsis, internal bleeding, fractures, spinal injuries, head injuries, meningitis, respiratory distress, drug reactions, and serious infections.
Hospital claims can also involve nursing care, medication administration, falls, pressure injuries, monitoring failures, communication breakdowns, delayed physician assessment, failure to escalate care, or discharge before the patient was medically safe.
Medication Errors
Medication errors can cause serious injury or death. Claims can involve the wrong drug, wrong dose, wrong patient, dangerous drug interaction, failure to monitor side effects, pharmacy dispensing errors, medication reconciliation errors, or failure to respond to signs of toxicity.
The evidence could include prescription records, pharmacy records, medication administration records, lab results, hospital records, nursing notes, physician orders, and expert evidence from physicians or pharmacists.
Medication cases need require careful causation analysis because the defence may argue that the patient’s underlying condition, not the medication error, caused the harm.
Birth Injury and Obstetrical Negligence
Birth injury claims are legally and medically complex. They can involve fetal monitoring, delayed C-section, shoulder dystocia, forceps or vacuum delivery, hypoxic brain injury, uterine rupture, maternal infection, neonatal resuscitation, or failure to respond to fetal distress.
The Supreme Court of Canada decision in Ediger v. Johnston is an important birth injury case. The Court upheld findings that the physician breached the standard of care and caused injury where surgical backup was not immediately available before attempting a mid-level forceps delivery.
Birth injury claims often require obstetrical, neonatal, pediatric neurology, neuroradiology, life-care planning, and future income evidence. The claim must prove not only that the care was negligent, but that the negligence caused the child’s injury.
Infection, Sepsis, and Failure to Treat
Infection and sepsis claims often depend on timing. The issue can be whether the provider ordered appropriate tests, interpreted results properly, started antibiotics in time, escalated care, admitted the patient, monitored deterioration, or responded to abnormal vital signs.
Sepsis cases can progress quickly. The medical timeline is often critical.
Strong claims usually need a detailed review of triage records, nursing notes, physician assessments, vital signs, bloodwork, cultures, imaging, antibiotic timing, ICU records, and expert opinion.
Medical Malpractice and Catastrophic Injury
Medical negligence can cause catastrophic injury. A delayed diagnosis, surgical error, birth injury, infection, medication error, or failure to monitor can lead to brain injury, spinal cord injury, paralysis, amputation, organ failure, severe psychological injury, or wrongful death.
In these cases, the damages evidence is as important as the liability evidence. The claim may require future care reports, occupational therapy evidence, neuropsychology, vocational evidence, life-care planning, attendant care evidence, and expert opinion on future treatment needs.
Wrongful Death Caused by Medical Negligence
Some medical malpractice claims involve death. Wrongful death claims can arise where negligent care caused or contributed to a patient’s death. These cases can involve delayed diagnosis, infection, surgical complications, medication errors, emergency room errors, failure to monitor, or failure to escalate care.
Family members may have claims under Ontario’s Family Law Act for certain losses arising from the death, including loss of care, guidance, and companionship, as well as certain expenses.
Wrongful death medical negligence claims require careful review of the medical timeline, cause of death, expert evidence, and whether proper care would probably have changed the outcome.
Limitation Periods in Ontario Medical Malpractice Claims
Ontario medical malpractice claims are subject to limitation periods.
The Limitations Act, 2002 generally provides a two-year limitation period from the date a claim is discovered. In medical malpractice cases, discoverability can be complicated because a patient may not immediately know that an injury was caused by negligent care.
A patient may know that something went wrong before knowing that there is a legal claim. The question is about whether the patient knew, or reasonably should have known, that the injury was caused or contributed to by an act or omission and that a lawsuit was an appropriate way to seek a remedy.
There is also generally an ultimate limitation period. Limitation issues should be reviewed early, especially in cases involving delayed diagnosis, gradual deterioration, multiple providers, or a patient who did not learn about the possible negligence until later.
Expert Evidence in Medical Malpractice Claims
Medical malpractice claims require expert evidence. An expert may be needed to explain the standard of care, whether the defendant breached it, whether the breach caused injury, and what losses flow from the injury.
The type of expert depends on the case. A delayed cancer diagnosis may require oncology evidence. A surgical claim may require a surgeon in the same specialty. A birth injury claim may require obstetrics, neonatology, pediatric neurology, neuroradiology, and future care evidence. A medication error may require pharmacy or pharmacology evidence.
Why Medical Malpractice Claims Are Difficult
Medical malpractice claims are slower more technical, and more expensive to prove than many other personal injury claims.
The medical records are usually extensive. The defendants are often represented by experienced defence counsel. The issues often require multiple experts. Causation is frequently contested. The defence may argue that the outcome was caused by the patient’s underlying condition, not by negligent care.
That does not mean these claims cannot succeed. It means the case has to be selected, investigated, and developed carefully.
Serious Medical Negligence Claims We Review
Foster Injury Law reviews serious medical malpractice claims involving delayed cancer diagnosis, stroke or heart attack misdiagnosis, sepsis and infection, surgical negligence, emergency room negligence, hospital negligence, medication errors, birth injury, failure to monitor, failure to refer, failure to order appropriate testing, brain injury, amputation, spinal cord injury, catastrophic injury, and wrongful death.
We focus on serious injury and wrongful death claims where the medical and legal issues justify a detailed investigation.
We do not take every poor medical outcome or treatment complaint. The claim must involve serious harm and evidence capable of supporting both breach of the standard of care and causation.
How Foster Injury Law Helps
Foster Injury Law helps injured patients and families understand whether a medical negligence claim should be investigated.
We review the medical timeline, identify the key treatment decisions, obtain and organize records, assess limitation issues, consult experts where appropriate, and evaluate whether the evidence supports a claim for breach of the standard of care and causation.
We also assess the damages evidence, including future care, income loss, loss of earning capacity, Family Law Act claims, and the long-term effect of the injuries.
Speak With an Ontario Medical Malpractice Lawyer
If you or a family member suffered a serious injury or death after medical care, the key question is whether the outcome was caused by negligent treatment.
Foster Injury Law's Ontario personal injury lawyers can review the circumstances, explain the legal issues, and help determine whether the claim should be investigated further.
Contact Foster Injury Law for a free consultation about a serious medical malpractice claim.