Yes - but only up to a point. In Wisconsin, a hospital or doctor can argue you were partly at fault for your injuries if you ignored worsening symptoms, delayed getting help, or did not follow discharge instructions. That does not automatically defeat a claim.

Wisconsin uses modified comparative negligence under Wis. Stat. § 895.045. You can still recover damages as long as your share of fault is not greater than the other side's. In practical terms:

• If you were 0% to 50% at fault, your compensation is reduced by your percentage of fault.
• If you were 51% or more at fault, you are barred from recovering damages.

Example: if a jury finds the hospital missed clear heart attack signs but also finds you were 30% at fault for waiting too long to return despite severe chest pain, a $200,000 award would be reduced to $140,000.

In a missed-heart-attack case, fault is usually determined from the ER records, triage notes, ECGs, lab results, discharge instructions, ambulance records, and expert testimony about the accepted medical standard of care. The hospital may argue your symptoms were obvious enough that a reasonable person would have gone back sooner. You may argue the delay happened because medical staff reassured you, failed to warn you about danger signs, or discharged you without proper testing.

More than one party can share fault. A Wisconsin jury can assign percentages to the hospital, ER doctor, nurse practitioner, clinic, or the patient.

The usual Wisconsin deadline for most medical malpractice claims is 3 years from the injury or 1 year from when the injury was discovered or reasonably should have been discovered, with an outside limit of 5 years in most cases.