Subdural Hematoma Malpractice in New York

What Is a Subdural Hematoma?

A subdural hematoma is bleeding into the subdural space — the potential space between the dura mater and the arachnoid mater. Unlike epidural hematomas (which are typically arterial), subdural hematomas are usually venous — caused by tearing of the bridging veins that connect the brain surface to the dural sinuses.

The mechanism of injury is typically acceleration-deceleration — such as a fall, motor vehicle accident, or shaken baby syndrome — where the brain moves within the skull, stretching and tearing the bridging veins. This is why subdural hematomas can occur even without a direct blow to the head, and even from relatively minor trauma.

Who is at highest risk?

• Elderly patients: Brain atrophy with age stretches the bridging veins — making them more vulnerable to tearing. Even minor falls can cause SDH in the elderly.
• Patients on anticoagulants (blood thinners): Including warfarin (Coumadin), heparin, clopidogrel (Plavix), and direct oral anticoagulants (DOACs). These medications increase bleeding risk and can turn a small bleed into a life-threatening one. [Link to: /medication-errors/anticoagulant-blood-thinner-errors]
• Alcoholics: Chronic alcohol use causes brain atrophy and coagulopathy — increasing SDH risk.
• Infants (shaken baby syndrome): Violent shaking can cause bridging vein tears — a form of child abuse. [Link to: /brain-injury/pediatric]
• Patients with coagulopathy: Liver disease, low platelets, or bleeding disorders.

Acute vs. Subacute vs. Chronic Subdural Hematomas

Subdural hematomas are classified by how quickly symptoms develop:

• Acute SDH: Symptoms develop within 72 hours of the injury. These are the most dangerous — requiring emergency surgical evacuation. Mortality rates for acute SDH can be 50-90% if not promptly treated.
• Subacute SDH: Symptoms develop over 3-20 days. These may be harder to diagnose — as the patient may not connect their symptoms to a prior minor head injury.
• Chronic SDH: Symptoms develop over more than 20 days — sometimes weeks or months after the injury. Common in the elderly, where the initial injury may have been so minor it was forgotten. Chronic SDH can cause progressive headaches, confusion, weakness, and personality changes — sometimes mimicking stroke, dementia, or brain tumor. [Link to: /misdiagnosis/stroke-misdiagnosis]

How Medical Negligence Causes Subdural Hematomas

Medical negligence related to subdural hematomas occurs in several ways:

• Failure to diagnose in the ER: The most common malpractice scenario. A patient presents with head trauma and neurological symptoms — but the ER physician fails to order a CT scan, misreads the CT, or discharges the patient without proper evaluation. [Link to: /emergency-room-negligence-lawyer] [Link to: /er-errors/triage-errors]
• Misreading the CT scan: Radiologist errors — including missing small subdural hematomas, particularly on non-contrast CT or in patients with anemia (where acute blood appears isodense). [Link to: /radiology-errors/ct-scan-negligence] [Link to: /radiology-errors/communication-failures]
• Failure to monitor anticoagulated patients: Patients on blood thinners who sustain head trauma require prompt CT scanning — even if asymptomatic. Failure to scan or failure to reverse anticoagulation can be fatal. [Link to: /medication-errors/anticoagulant-blood-thinner-errors]
• Failure to recognize chronic SDH: In elderly patients presenting with confusion, weakness, or personality changes — failure to consider chronic SDH as a diagnosis and order imaging. [Link to: /delayed-diagnosis-lawyer/proving-malpractice]
• Surgical errors: During craniotomy or burr hole evacuation — including incomplete evacuation, failure to control bleeding, damage to brain tissue, or failure to recognize re-accumulation. [Link to: /surgical-error-lawyer] [Link to: /surgical-errors/neurosurgery-malpractice]
• Failure to monitor post-surgery: After surgical evacuation, patients must be closely monitored for re-accumulation — failure to do so can cause permanent brain damage. [Link to: /medical-malpractice/failure-to-monitor] [Link to: /medical-malpractice/icu-negligence]
• Failure to transfer: When a hospital without neurosurgical capabilities diagnoses a subdural hematoma but fails to promptly transfer the patient to a facility with neurosurgery — causing delays in surgical evacuation. [Link to: /hospital-negligence/emtala-violations]

The Standard of Care for Diagnosing Subdural Hematomas

The standard of care for diagnosing a subdural hematoma requires:

1. Recognizing risk factors and symptoms: Any patient presenting with head trauma — particularly elderly patients, patients on anticoagulants, and patients with coagulopathy — must be evaluated for SDH. Symptoms include headache, confusion, nausea/vomiting, drowsiness, weakness, speech difficulties, seizures, and loss of consciousness.

2. Prompt CT scan: The gold standard for diagnosing acute SDH is a non-contrast head CT — which should be obtained emergently in any patient with signs of head injury. The standard of care requires CT scanning for: any patient with loss of consciousness, any patient on anticoagulants who sustains head trauma (even minor), elderly patients with fall and neurological symptoms, and patients with progressive or worsening symptoms. [Link to: /radiology-errors/ct-scan-negligence]

3. Proper interpretation of the CT: Radiologists and emergency physicians must correctly identify subdural hematomas — including small or isodense (same density as brain tissue) hematomas that can be easily missed. [Link to: /radiology-errors/communication-failures]

4. Prompt neurosurgical consultation: Once a subdural hematoma is identified, the standard of care requires prompt neurosurgical consultation — and emergency surgical evacuation for hematomas causing brain compression or neurological deficits.

5. Close monitoring: Patients with small subdural hematomas managed non-operatively require close neurological monitoring — with repeat CT if symptoms worsen.

Failure to Diagnose: The Most Common Malpractice Scenario

The most common subdural hematoma malpractice scenario is failure to diagnose in the emergency room. Typical fact patterns include:

Scenario 1: The discharged patient An elderly patient falls at home, hits their head, and goes to the ER. The ER physician examines them, notes a minor bump, and discharges them without a CT scan — or with a CT scan that was misread. The patient goes home, the subdural hematoma expands, and they suffer permanent brain damage or die. This is malpractice if the patient had risk factors (age, anticoagulation) or symptoms that warranted a CT scan.

Scenario 2: The anticoagulated patient A patient on warfarin or a DOAC sustains head trauma — even minor. The standard of care requires a prompt CT scan, even if the patient is asymptomatic — because anticoagulated patients can have life-threatening bleeds without obvious symptoms. If the ER fails to scan or fails to reverse the anticoagulation, and the patient suffers a subdural hematoma, this is malpractice. [Link to: /medication-errors/anticoagulant-blood-thinner-errors]

Scenario 3: The chronic SDH misdiagnosed as dementia An elderly patient presents with progressive confusion, weakness, and personality changes — which are attributed to dementia or stroke. No CT is ordered, or the CT is delayed. The chronic subdural hematoma continues to compress the brain, causing irreversible damage. Chronic SDH is a treatable condition — if diagnosed. Failure to consider it in the differential diagnosis is malpractice. [Link to: /delayed-diagnosis-lawyer/proving-malpractice]

Scenario 4: The misread CT The CT scan is obtained — but the radiologist or emergency physician misses the hematoma. This is particularly common with small hematomas, isodense hematomas (in anemic patients), or bilateral chronic SDHs that can be subtle. [Link to: /radiology-errors/ct-scan-negligence] [Link to: /radiology-errors/communication-failures]

Surgical Errors in Subdural Hematoma Treatment

Once a subdural hematoma is diagnosed, surgical treatment may include craniotomy (opening the skull) or burr hole drainage (creating small holes in the skull). Surgical errors that may constitute malpractice include:

• Delay in surgery: The most common surgical malpractice — failing to promptly evacuate a hematoma that is causing brain compression. Every minute of delay increases brain damage.
• Incomplete evacuation: Failing to completely remove the hematoma — allowing continued brain compression.
• Failure to control bleeding: Not identifying and controlling the bleeding source — leading to re-accumulation.
• Brain injury during surgery: Damage to brain tissue during the procedure — from instruments or excessive retraction.
• Failure to monitor post-operatively: Not monitoring for re-accumulation — which requires repeat CT and possibly re-operation. [Link to: /medical-malpractice/failure-to-monitor]
• Infection: Surgical site infections or post-operative meningitis — from improper sterile technique.

Proving Causation in Subdural Hematoma Cases

Proving that medical negligence caused harm in a subdural hematoma case requires establishing:

1. The standard of care was breached: Expert testimony from an emergency medicine physician, neurosurgeon, or radiologist — that the provider failed to order a CT scan, misread the CT, failed to consult neurosurgery, or made a surgical error.

2. The breach caused the harm: Expert testimony linking the delay or error to the outcome — showing that prompt diagnosis and treatment would have prevented or reduced the brain damage.

3. The outcome would have been better with prompt treatment: Subdural hematomas are treatable — if diagnosed promptly. Expert testimony that if the SDH had been diagnosed and treated at the time of the ER visit, the patient would have had a significantly better outcome. This is the Loss of Chance doctrine — recognized in New York. [Link to: /medical-malpractice/loss-of-chance]

The defense may argue that the patient's underlying condition (age, anticoagulation, severity of the bleed) was the primary cause — or that the outcome was inevitable. Expert testimony is required to counter these arguments. [Link to: /surgical-errors/error-vs-known-risk]

Damages in Subdural Hematoma Cases

Damages in subdural hematoma malpractice cases may include:

• Medical expenses: Including emergency surgery, ICU care, hospitalization, rehabilitation, neuropsychological treatment, and ongoing medical care.
• Lost wages and loss of earning capacity.
• Pain and suffering: Physical pain, cognitive impairment, personality changes, loss of enjoyment of life. New York does not cap non-economic damages.
• Future care costs: Including rehabilitation, therapy, and assistive care. [Link to: /brain-injury/life-care-plan]
• Loss of consortium.
• Wrongful death damages: If the subdural hematoma caused death. [Link to: /wrongful-death-lawyer]

New York Statute of Limitations

Under CPLR § 214-a, the statute of limitations for medical malpractice is 2.5 years from the date of the negligent act. The continuous treatment doctrine may extend the deadline. For wrongful death (if the SDH caused death), the deadline is 2 years from the date of death (EPTL § 5-4.1). For municipal hospital claims (NYC Health + Hospitals), a Notice of Claim must be filed within 90 days. [Link to: /medication-errors/statute-of-limitations] [Link to: /wrongful-death/statute-of-limitations]

Frequently Asked Questions

The value of a medical malpractice case in New York depends on several factors, including the severity of the injury, the strength of liability evidence, and the economic and non-economic damages involved. New York is one of the few states with no caps on medical malpractice damages, meaning there is no artificial limit on what you can recover. Below are typical settlement ranges based on injury severity.