Blood clots are one of the most serious risks after surgery. A deep vein thrombosis (DVT) can form in the leg or pelvis. A pulmonary embolism (PE) happens when part of that clot breaks off and travels to the lungs.
In a legal review, the question isn’t whether a clot occurred. It’s whether the medical team took reasonable steps to prevent one and recognized and treated the clot promptly once symptoms appeared.
This guide explains what those steps generally look like, which warning signs call for urgent care, and how New York malpractice law and deadlines apply.
Prior results do not guarantee a similar outcome.
What Are DVT and Pulmonary Embolism?
A DVT is a blood clot in a deep vein, usually in the leg, thigh, or pelvis. The clot can cause swelling and pain and can damage the vein over time. The bigger danger comes if part of it breaks loose.
When a piece travels through the bloodstream and lodges in the lungs, it becomes a pulmonary embolism. A PE can block blood flow and oxygen, strain the heart, and in severe cases cause cardiac arrest.
Together, DVT and PE are called venous thromboembolism, or VTE. The CDC’s data on venous thromboembolism estimates that up to 900,000 people in the United States are affected each year and that 60,000 to 100,000 die. These are national figures for all blood clots, not just those after surgery.
Possible signs of a DVT:
Swelling in one leg or arm
Pain or tenderness, often like a cramp that won’t go away
Warmth in the affected area
Red or discolored skin
A feeling of heaviness or tightness
Possible signs of a PE:
Sudden shortness of breath
Chest pain that gets worse with a deep breath or cough
A fast or irregular heartbeat
Coughing, sometimes with blood
Lightheadedness or fainting
Confusion, a sense that something is very wrong, or a sudden drop in blood pressure
How Should Hospitals Prevent Blood Clots After Surgery?
A CDC Grand Rounds report on hospital-associated VTE likewise notes that many of these clots aren’t diagnosed until after the patient leaves.
Prevention generally starts before the operation and can continue after discharge. The right plan depends on the patient’s clot risk and bleeding risk, but it usually draws on these measures:
A documented risk assessment. Many hospitals use standardized tools to score VTE risk and bleeding risk, and the result should shape the plan.
Early movement. Walking and leg exercises such as ankle pumps help keep blood moving. Patients are usually helped out of bed as soon as it’s medically safe. Prolonged bed rest without a clear medical reason deserves a closer look.
Mechanical compression. Sequential compression devices inflate and deflate around the legs, and graduated compression stockings provide steady pressure. These only work if they’re actually applied, fitted properly, kept on, and documented.
Preventive blood thinners when appropriate. Options include low-molecular-weight heparin, unfractionated heparin, and in some cases other medications. The drug, dose, timing, and duration depend on the surgery, kidney function, bleeding risk, and other factors.
Clear handoffs. The prevention plan should carry over when a patient moves from recovery to the floor, between shifts, and between care teams.
Reassessment at discharge. Since most postoperative clots appear after the patient goes home, discharge is a key point to review clot risk again. That includes whether extended prevention at home is needed, which is common after major orthopedic or cancer surgery.
A usable discharge plan. The plan should include a prescription the patient can fill and take safely, and clear instructions on how to take it. It should list the warning signs, explain when to call the surgeon and when to go to the emergency department, and include a follow-up appointment.
When Might Blood Thinners Not Be Safe?
Not giving a blood thinner isn’t automatically a mistake. Sometimes the bleeding risk outweighs the clot risk. Common reasons to delay or avoid anticoagulation include:
Active bleeding from the surgical site or elsewhere
Very high bleeding risk from the surgery itself
Recent brain or spinal surgery, where bleeding could cause devastating injury
A very low platelet count
Certain conditions inside the skull, uncontrolled high blood pressure, or severe kidney disease, which can affect both safety and dosing
An epidural or spinal catheter. Timing blood thinners around placing and removing these catheters matters, because bleeding near the spinal cord can cause paralysis.
When blood thinners are held for a legitimate reason, the important questions are these:
Was the reason documented?
Were compression devices and early movement used instead?
Was the decision revisited as the patient’s condition changed?
A valid concern on the day of surgery doesn’t necessarily justify skipping prevention for an entire hospital stay.
What Long-Term Complications Can Follow?
A postoperative clot can have lasting effects:
Post-thrombotic syndrome. Damage to leg vein valves causes chronic swelling, pain, heaviness, skin changes, and sometimes ulcers. The CDC estimates that one third to one half of people who have a DVT develop long-term complications like these.
Chronic thromboembolic pulmonary hypertension. After a PE, scarring in the lung’s blood vessels can raise pressure in the lungs. This causes ongoing shortness of breath and fatigue that may require medication, oxygen, or surgery.
Higher risk of another clot. This often means blood thinners for months, years, or life, with their own bleeding risks and monitoring.
Readmission. The CDC notes that VTE is the fifth most common reason for unplanned readmission after surgery overall. It’s the third most common after hip or knee replacement.
Emotional effects, including anxiety after a frightening PE and the stress of chronic symptoms.
Limits on work and daily life, especially in jobs that require long periods of standing or physical exertion.
Not every patient has these outcomes. Long-term effects depend on the size and location of the clot, how quickly it was treated, and the person’s overall health.
Is Every Blood Clot After Surgery Malpractice?
No. DVT and PE can happen even when a medical team does everything right. A malpractice claim generally focuses on whether the team did four things well:
Assessed the patient’s risk properly
Used reasonable prevention and actually carried it out
Planned safely for discharge
Recognized and treated the clot in time
To bring a medical malpractice claim in New York, an injured patient generally must show four things:
Duty. A provider-patient relationship existed.
Departure. The provider departed from accepted medical practice.
Causation. That departure was a substantial factor in causing the injury.
Damages. The patient suffered real harm as a result.
Before filing a malpractice lawsuit, New York generally requires a certificate of merit under CPLR 3012-a. This confirms that a lawyer has consulted a qualified physician and concluded there is a reasonable basis for the case.
Hospitals are generally responsible for the nurses and staff they employ, while responsibility for individual doctors depends on their relationship with the hospital. You can read more on our hospital malpractice page.
What Are the Deadlines for a Malpractice Claim in New York?
New York’s filing deadlines are strict. Missing one can end a claim no matter what happened.
Situation | Deadline | Law |
|---|---|---|
Most medical malpractice claims | 2 years and 6 months from the malpractice, or from the last treatment when treatment for the same condition is continuous | |
Wrongful death | 2 years from the date of death | EPTL 5-4.1 |
City, county, or other public hospitals, including NYC Health + Hospitals facilities | Notice of claim within 90 days, and a lawsuit within 1 year and 90 days | GML 50-e and 50-i |
Injured children | The earlier of 2 years and 6 months after the 18th birthday, or 10 years from the malpractice | CPLR 208 |
A few points often trip people up:
Discovery doesn’t restart the clock. The deadline runs from the malpractice or the last continuous treatment. It does not run from when the clot was diagnosed or when you learned it may have been preventable.
Continuous treatment is narrow. Staying with the same practice doesn’t automatically extend the deadline. The treatment has to be continuous and for the same condition.
State and federal hospitals follow different rules. Claims against state-operated hospitals, including SUNY hospitals, go through the New York Court of Claims under their own short deadlines. Claims involving VA medical centers and other federal facilities follow federal law, which requires an administrative claim first.
Late notice of claim. If a 90-day notice deadline for a public hospital is missed, a court may allow a late notice in some circumstances. That isn’t guaranteed.
Regulatory complaints don’t stop the clock. A complaint to the state health department (described below) does not preserve or extend a lawsuit deadline.
What Compensation Categories Can a Claim Include?
New York does not cap damages in medical malpractice cases. What a claim may include depends on the facts, the medical evidence, and the harm that can be proven. The categories generally include:
Past and future medical costs. These can cover emergency care, additional hospital stays, long-term blood thinners and monitoring, compression garments, pulmonary care, and rehabilitation.
Lost wages and reduced earning ability.
Pain and suffering and loss of enjoyment of life.
Costs tied to permanent impairment.
Insurance and other benefits can affect how some financial damages are calculated after a verdict under New York’s collateral source rule in CPLR 4545. That’s a technical, case-specific issue. It doesn’t mean insurance payments eliminate a claim.
When a patient dies from a PE, New York’s wrongful death law currently limits the family’s recovery to financial losses.
These include funeral costs, medical bills, and the support and services the person would have provided. It does not include compensation for grief.
The estate may also bring a separate claim for the conscious pain and suffering the person experienced before death.
Frequently Asked Questions About Blood Clots After Surgery
Should every surgical patient get blood thinners to prevent clots?
No. Whether blood thinners are appropriate depends on the patient’s clot risk, bleeding risk, the type of surgery, kidney function, and other conditions. For some patients, the bleeding risk outweighs the benefit, and early movement and compression may be the better choice. The question in a review is whether the decision fit that patient’s documented risks and whether it was revisited as their condition changed.
How long after surgery can a blood clot develop?
Clots can form weeks after surgery, and sometimes longer. The CDC reports that about 60 percent of postoperative clots appear in the 90 days after discharge. That’s why some patients receive extended prevention after going home, especially after major orthopedic or cancer surgery. It’s also why clear discharge instructions about warning signs matter.
What if I sometimes refused the compression devices or waited to report symptoms?
That doesn’t automatically end a claim. New York’s pure comparative fault rule generally reduces a recovery by the patient’s share of responsibility rather than barring it. The review would also consider whether staff explained why the devices mattered, offered alternatives, and documented the refusal. Being upfront about these details early helps an attorney evaluate the case accurately.
Summing It Up
A blood clot after surgery isn’t always preventable, and a clot alone doesn’t prove anything went wrong. What matters is whether the medical team assessed your risk and chose reasonable prevention.
If you believe a blood clot after surgery could have been prevented or should have been caught sooner, Porter Law Group can review what happened and explain your options. Our firm has recovered more than $500 million for injured New Yorkers. You can see examples on our results page.
We handle medical malpractice cases on a contingency basis, so you pay no attorney fee unless we recover compensation for you. Call 833-PORTER9, email info@porterlawteam.com, or contact us online to schedule a free consultation.
This article is for informational and educational purposes only. It is not a substitute for medical advice from a qualified healthcare provider or legal advice based on your specific circumstances.
Prior results do not guarantee a similar outcome.
