Miami Stroke Misdiagnosis & Delayed Treatment Lawyers

A transient ischemic attack (TIA) produces stroke symptoms that resolve within minutes to hours. The brain recovers, but a TIA is a warning that a full stroke is imminent. Studies show that up to 10 percent of TIA patients suffer a completed stroke within 90 days, with the highest risk in the first 48 hours. When a Miami ER evaluates a patient whose symptoms have resolved and discharges them without brain imaging, antiplatelet therapy, or urgent neurology follow up, the TIA that was dismissed as “resolved” becomes the missed warning for the stroke that follows.

An ischemic stroke is caused by a clot blocking blood flow to the brain. It accounts for roughly 87 percent of all strokes. Treatment is time dependent: tPA can dissolve the clot if administered within 4.5 hours of symptom onset, and mechanical thrombectomy can physically retrieve a large vessel occlusion in selected patients up to 24 hours from onset. The failure to diagnose an ischemic stroke in time to deliver either treatment is the most common basis for stroke malpractice claims in Miami-Dade County.

A hemorrhagic stroke is caused by bleeding into the brain from a ruptured vessel. It requires an entirely different protocol: blood pressure control, reversal of anticoagulation if applicable, and neurosurgical consultation. Administering tPA to a patient with an unrecognized hemorrhagic stroke can be fatal. That is why the first imaging study in any suspected stroke is a non-contrast CT to rule out bleeding before any clot-dissolving medication is considered. If the ER skipped imaging and administered tPA, or if the CT showed hemorrhage and the team did not recognize it, the type of stroke determines the theory of the case.

Anterior circulation strokes affect the carotid territory and produce the classic symptoms: facial droop, arm weakness, speech difficulty. Posterior circulation strokes affect the vertebrobasilar territory, the brainstem, and the cerebellum. They produce vertigo, double vision, gait instability, and difficulty swallowing. The distinction matters because posterior strokes are misdiagnosed at dramatically higher rates. The symptoms overlap with benign conditions, and many ER physicians default to the benign explanation without performing the examination or imaging that would distinguish them.

The Posterior Circulation Trap: When a Stroke Looks Like Vertigo

Anterior circulation strokes produce the symptoms everyone recognizes: facial droop, arm weakness, slurred speech. The BEFAST mnemonic (Balance, Eyes, Face, Arm, Speech, Time) is designed to catch them. But posterior circulation strokes, those affecting the vertebrobasilar system, the brainstem, and the cerebellum, present differently. The patient reports room-spinning vertigo, nausea, vomiting, difficulty walking, or double vision. In a busy Miami ER, these symptoms are routinely attributed to benign positional vertigo, labyrinthitis, or a viral inner ear infection.

The clinical test that distinguishes a peripheral cause from a central (stroke) cause is the HINTS examination: Head Impulse, Nystagmus type, and Test of Skew. It takes minutes to perform. Published research shows that HINTS performed by a trained examiner is more sensitive than an initial CT for posterior stroke. If the ER physician did not perform the HINTS exam, did not document the nystagmus pattern, and attributed the vertigo to a benign cause without imaging, the failure is captured in the chart: what was documented, what was tested, and what was not.

Failure to Activate the Stroke Code or Order Timely Imaging

Every Miami hospital with a stroke program has a stroke code protocol. When it is activated, the system moves: neurology is paged, imaging is prioritized, the CT suite is cleared. When it is not activated, the patient sits in the general queue. The CT that should have been completed in 25 minutes is performed in two hours. The neurologist who should have been at the bedside within 15 minutes is never called. The tPA window, which closes at 4.5 hours from symptom onset, expires while the patient waits for imaging that was never prioritized.

The ER’s electronic medical record timestamps every order, every result, and every notification. The stroke code activation log, if it exists, shows when the code was called and who responded. If the code was never activated, the absence of that log is its own evidence. Our emergency medicine experts compare the documented timeline against the hospital’s own stroke protocol and the national benchmarks published by the American Heart Association and the American Stroke Association to determine whether the response met the standard or fell short of it.

Misread Imaging and Dismissed Radiology Alerts

A non-contrast CT of the head is often the first study ordered when stroke is considered. It is excellent at detecting hemorrhage but limited in its ability to detect early ischemic stroke, particularly in the first 6 to 12 hours. A CT angiography (CTA) or MRI with diffusion-weighted imaging is far more sensitive for identifying an acute ischemic event and localizing a large vessel occlusion that may be eligible for thrombectomy. When the ER ordered only a non-contrast CT, read it as “negative for acute findings,” and discharged the patient without CTA or MRI, the decision to stop imaging is the decision we litigate. The original study is preserved on the hospital’s PACS system and is re-readable by our neuroradiologists years later.

Window 1: Symptom Onset to ER Arrival

The “last known well” time is the anchor for every treatment decision that follows. It determines whether the patient is within the 4.5 hour window for tPA or the 24 hour window for mechanical thrombectomy in selected patients. EMS records document the call time, the on-scene assessment, and whether the paramedics classified the event as a possible stroke using a prehospital screening tool. If EMS notified the receiving Miami hospital of a potential stroke patient and the hospital did not have the stroke team assembled on arrival, the failure began before the patient crossed the threshold.

Window 2: ER Triage to Imaging

The AHA/ASA target for door-to-CT is 25 minutes. For door-to-CT interpretation, 45 minutes. In the stroke misdiagnosis cases we handle across Miami-Dade County, the gap between arrival and imaging is often measured in hours, not minutes. The triage nurse assigns a complaint code. The ER physician sees the patient and documents a differential diagnosis. If “stroke” or “CVA” does not appear in that differential, the CT is not ordered with stroke-protocol urgency. The patient is queued behind elective studies. Each timestamp in the electronic record measures the distance between what happened and what should have happened.

Window 3: Imaging to Treatment or Discharge

Once imaging is obtained, the decision tree branches. If the CT shows hemorrhage, the protocol shifts to blood pressure management and neurosurgical consultation. If the CT is negative for hemorrhage and the clinical picture supports ischemic stroke, the team must decide whether to administer tPA (door-to-needle target: 60 minutes) and whether to perform CTA to evaluate for a large vessel occlusion eligible for thrombectomy (door-to-groin puncture target varies by protocol). In the cases we litigate in Miami, the most damaging failure in this window is the decision to discharge. The CT was “negative,” the symptoms “improved,” and the patient was sent home with a diagnosis of migraine or vertigo. Hours later, the stroke completes. The infarct that was small and potentially recoverable at the time of discharge is now large and permanent.

Multiple Miami hospitals now run AI-assisted imaging platforms that detect intracranial hemorrhage and large vessel occlusions on CT and CTA scans in real time. These systems, including platforms like Viz.ai, flag suspected findings and send alerts directly to the stroke team’s mobile devices before the radiologist has finished the formal read. Published research shows that jurors penalize physicians more when AI identifies a finding the clinician missed, because the technology eliminates the argument that the finding was “subtle” or “easy to overlook.”

When a Miami hospital purchased and installed one of these systems, the question in litigation is no longer limited to whether the individual radiologist or ER physician should have caught the stroke. It extends to whether the institution configured the system correctly, whether the alert was generated, and whether anyone on the clinical team acted on it. If the AI flagged a large vessel occlusion and the on-call neurologist did not respond for 45 minutes, that 45 minutes is attributable to the institution that deployed the tool without ensuring the response chain was functional. Our discovery in stroke cases now routinely includes requests for AI alert logs, notification timestamps, and the hospital’s internal protocols for responding to automated imaging findings.

The ER physician who evaluated the patient, documented the differential diagnosis, and made the decision about which imaging to order and when. If stroke was not on the differential and should have been, the ER physician is the primary defendant. The triage nurse who assigned the acuity level and complaint code. If the nurse documented symptoms consistent with stroke and assigned a non-urgent triage category, the delay attributable to that classification belongs to the nurse and the hospital.

The radiologist who read the CT or CTA and either missed early ischemic changes or failed to recommend advanced imaging in the report. The original study is stored on the hospital’s PACS system indefinitely. Our neuroradiologists re-read it. The neurologist who was consulted and either responded too slowly or was never called. The hospital itself for stroke code protocol failures, staffing deficiencies, lack of tele-stroke capability, failure to transfer to a thrombectomy-capable center, or failure to operationalize AI diagnostic tools it had purchased.

A stroke that is diagnosed and treated within the window may produce minimal lasting deficits. The same stroke diagnosed hours later, after the treatment window has closed, can produce permanent hemiparesis, expressive or receptive aphasia, visual field cuts, cognitive impairment, personality and behavioral changes, post-stroke epilepsy, depression, and loss of independence. The difference between those two outcomes is the difference between a patient who returns to work and a patient who requires 24 hour attendant care for the rest of their life.

The Life Care Plan in a stroke misdiagnosis case projects the cost of inpatient rehabilitation, outpatient physical therapy, occupational therapy, and speech-language pathology. Neuropsychological testing and cognitive rehabilitation. Anticonvulsant management if post-stroke seizures develop. Assistive devices from ankle-foot orthoses through power wheelchairs. Home modifications for single-sided weakness, accessible bathing, and fall prevention. Modified vehicle or transportation services. Attendant care at the level the patient’s functional deficits require. A forensic economist separately calculates lost income and diminished earning capacity over the patient’s remaining work-life expectancy. The combined projection is built from documented deficits, not speculation.

What the Hospital’s Quality Department Already Knows and Will Not Share Voluntarily

Hospitals track their own stroke metrics. Door-to-CT times. Door-to-needle times. Stroke code activation rates. Percentage of patients screened with the NIH Stroke Scale. These numbers are collected for certification programs like the Joint Commission’s Primary Stroke Center and Comprehensive Stroke Center designations. Attorney Jorge L. Flores knows these internal quality reports exist because he reviewed them during the years he spent at a Miami insurance defense firm representing hospitals. Defense counsel will argue those reports are protected under Florida’s peer review and quality assurance privileges and fight to keep them from the jury.

Jorge Flores knows which categories of quality data are shielded and which are not. He knows that the stroke code activation log, the individual patient’s triage and imaging timestamps, and the AI alert notification records are not peer review materials. They are operational data generated in the ordinary course of patient care. The defense will try to blur the line between quality review and operational records. We draw the line where it belongs and compel production of every document the hospital cannot legitimately withhold.

Two Million Neurons Die Every Minute a Stroke Goes Untreated. The ER Record Tells Us How Many Minutes Were Wasted.

The triage note, the imaging orders, the stroke code log, and the discharge diagnosis reconstruct the timeline. If the window closed while the ER was looking somewhere else, the evidence already exists.

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