Stroke Misdiagnosed in an Oregon ER: When It's Malpractice

Stroke is one of the most time-sensitive emergencies in modern medicine. In Oregon emergency rooms, it is also one of the most commonly missed. Symptoms are attributed to migraine, vertigo, anxiety, or low blood sugar, and the patient is sent home with a different diagnosis. Hours later — sometimes after a second visit — imaging finally reveals what was happening. By then, the treatment window for clot-busting drugs has closed, and viable brain tissue is gone.

This article describes when a missed or delayed stroke diagnosis can support a medical malpractice claim in Oregon, the deadlines that apply, and what the legal standard actually requires.

Why stroke gets missed

The classic stroke presentation — sudden one-sided weakness, slurred speech, facial droop — is well known. Many strokes do not look like that. Posterior-circulation strokes can present primarily as dizziness, vertigo, nausea, or vision changes, which overlap with much more common conditions. Younger patients are stroke-coded less often because providers underestimate their risk. Women are more likely than men to be sent home with a non-stroke diagnosis. The result is the same in each scenario: a clot in the brain that goes untreated while the clock runs.

The window for intravenous thrombolytic therapy (tPA) is generally 4.5 hours from symptom onset. Mechanical thrombectomy, in eligible patients with a large-vessel occlusion, can extend the intervention window further. Outside those windows, the available treatments shift from rescue of brain tissue to prevention of further injury — a far different recovery trajectory.

The legal standard in Oregon

Under ORS 677.095, an Oregon physician owes the patient "the degree of care, skill and diligence that is used by ordinarily careful physicians in the same or similar circumstances in the community."¹ A medical malpractice claim does not require proof that a doctor was reckless or grossly negligent. It requires proof that the provider's conduct fell below what a reasonably competent provider in the same specialty would have done.

For a missed-stroke claim, the question is generally one or more of the following:

• Was the history and physical adequate? Did the provider perform or document a focused neurological examination, including a stroke-specific assessment such as the NIH Stroke Scale, when the presentation warranted it?
• Was imaging ordered timely? CT (and, when indicated, CT angiography or MRI) is the foundation of stroke diagnosis. Failure to order imaging in the face of stroke-suggestive symptoms is a frequent breach.
• Was tPA evaluated? Even when imaging confirms ischemic stroke, eligibility for thrombolysis must be assessed and a treat-or-no-treat decision documented. A failure to evaluate within the time window — not just a failure to administer — can be malpractice.
• Was the patient discharged with red-flag symptoms still in play? Discharge with persistent neurological deficits, or without a clear plan for follow-up imaging, is a common point of failure.

Establishing that the standard of care was breached requires expert medical testimony. Oregon does not require a pre-suit certificate of merit, but at trial a qualified physician must explain what a reasonable provider would have done and how the defendant fell short.

Causation: did the delay cause additional harm

A missed stroke is not, by itself, a malpractice case. The plaintiff also has to show that the breach caused a worse outcome — that timely diagnosis would have led to treatment that, more likely than not, reduced the injury. In stroke cases, that often comes down to the tPA or thrombectomy window: if a competent diagnosis would have produced eligibility for treatment, and the delay pushed the patient outside the window, the causation case is well-defined. Where the patient was already outside the window on arrival, causation is harder, although not always impossible.

The two-year discovery rule and the five-year repose

Under ORS 12.110(4), a medical malpractice action in Oregon must be commenced "within two years from the date when the injury is first discovered or in the exercise of reasonable care should have been discovered."² In stroke cases, the discovery date is often the date the stroke is finally identified — which may be days to weeks after the missed-diagnosis ER visit, particularly if a second hospital catches what the first missed.

The same statute imposes a five-year statute of repose: every such action "shall be commenced within five years from the date of the treatment, omission or operation upon which the action is based."² A limited exception applies for fraud or concealment: if no action has been commenced within five years "because of fraud, deceit or misleading representation," the claim can still be filed "within two years from the date such fraud, deceit or misleading representation is discovered."²

These deadlines run independently of any conversation with the hospital, any bill, and any apology. The clock is the clock.

Public hospitals require earlier notice

If the missed-stroke care occurred at a public hospital — OHSU, a county or district hospital, or another public-body provider — the Oregon Tort Claims Act applies. ORS 30.275 requires written notice "within 180 days after the alleged loss or injury" for most claims, and "within one year after the alleged loss or injury" for wrongful-death claims.³ The OTCA notice deadline runs in parallel with the two-year limitations period in ORS 12.110(4); missing it can extinguish an otherwise valid claim against a public provider.

What a stroke malpractice review looks like in practice

A stroke malpractice review starts with the ER chart from the missed-diagnosis visit, the imaging records (or absence of them), the discharge instructions, and the medical record from the visit at which the stroke was finally identified. An Oregon-qualified neurologist or emergency-medicine expert reviews those records and forms an opinion on whether the standard of care was met. From there, the analysis turns on causation: would competent care have changed the trajectory?

These cases are often complex on the medicine but straightforward on the law: the duty exists under ORS 677.095, the breach is shown through expert testimony, and the deadline is set by ORS 12.110(4) — together with ORS 30.275 where the OTCA applies. The work, and the value, is in the medical record review and the expert analysis.

This article is educational

This article describes Oregon law in general terms. It is not legal advice and does not create an attorney-client relationship.

Time limits matter. Most Oregon personal-injury and auto-accident claims must be filed within two years of the injury or accident. Medical malpractice claims must be filed within two years of when you knew or reasonably should have known of the negligence, with an outer limit of five years from the act itself (with a fraud exception). Wrongful death claims must be filed within three years of the date of death. Claims against public bodies (cities, counties, state agencies, public hospitals) require a notice of claim within 180 days. Missing these deadlines typically ends a case.

If you think you may have a claim, call Huegli Law at 971-317-6436 for a free case review. Todd Huegli is licensed in Oregon and consults on cases in Oregon only.

Footnotes

1. ORS 677.095 — Duty of care of practitioner. https://oregon.public.law/statutes/ors_677.095 ↩

2. ORS 12.110 — Actions for certain injuries to person not arising on contract; medical malpractice; fraud or deceit. https://oregon.public.law/statutes/ors_12.110 ↩ ↩² ↩³

3. ORS 30.275 — Notice of claim; contents; service; time of notice and action. https://oregon.public.law/statutes/ors_30.275 ↩