What OT, PT, and SLP Need to Understand When Patients Take Anticoagulant and Antiplatelet Medications

A large share of home health patients take medicines that thin the blood or prevent clots, prescribed for atrial fibrillation, deep vein thrombosis, pulmonary embolism, heart valves, stents, or a prior stroke. Anticoagulants include warfarin and the direct oral anticoagulants such as apixaban, rivaroxaban, dabigatran, and edoxaban, while antiplatelet drugs such as aspirin and clopidogrel work differently but also raise bleeding risk. Therapists do not manage these medications, but they handle patients, move them, and see them fall, so understanding the implications is part of safe practice. Knowing at every visit which patients take a blood thinner should be as routine as knowing who has a pacemaker.
The highest-stakes issue is head injury. A patient on an anticoagulant who falls and strikes the head can develop bleeding inside the skull even after what looks like a minor bump, and symptoms can be delayed by hours or longer. Treat any head strike in a patient taking a blood thinner as urgent. Stay with the patient, call the nurse or physician right away, and follow emergency guidance, including calling 911 for severe headache, vomiting, confusion, drowsiness, weakness, or loss of consciousness. A patient who says “I feel fine” still needs prompt medical evaluation. This is one reason fall prevention matters even more for patients on anticoagulants, as discussed in this series’ content on falls and home safety.
Bruising and skin injury are the second concern. Patients on blood thinners bruise easily and can develop large hematomas from minor trauma, and older skin, particularly in patients also taking corticosteroids, tears easily. Use gentle handling. Take care with gait belts, firm grips on arms and legs during transfers, manual resistance, taping, and the pressure of dressings and splints. Avoid aggressive soft tissue techniques such as deep massage, and be thoughtful about stretching and joint mobilization. Inspect the skin at each visit and document new bruises, swelling, or skin tears, noting location and size, and report a growing, tense, or painful swelling right away.
Know the signs of bleeding. External signs include nosebleeds that do not stop, bleeding gums, unusual or large bruises, and prolonged bleeding from a cut. Internal bleeding can be harder to see: red or brown urine, black or bloody stools, vomiting blood or material that looks like coffee grounds, coughing up blood, sudden severe headache, new weakness or numbness, and unexplained dizziness, pallor, rapid heartbeat, or abdominal pain. Severe bleeding, signs of stroke, or signs of shock call for 911. Other signs warrant a same-day call to the nurse or physician. Do not advise a patient to stop or skip a blood thinner, because doing so can cause a stroke or clot, and that decision belongs to the prescriber.
Warfarin and the newer agents differ in practical ways. Warfarin requires regular blood tests called INR checks, and its effect is influenced by diet, illness, and many other medicines, including common antibiotics. Direct oral anticoagulants do not require INR monitoring and have fewer interactions, but missed doses matter and kidney function affects dosing. Medication management is therefore a real safety issue: patients can miss doses, double up, or confuse similar-looking pills. Occupational therapy medication management assessment, pillbox setup, and routines tied to daily habits reduce these errors. Report any confusion about doses, missed INR appointments, or new medicines to the nurse.
Education reinforces safety. Patients on blood thinners should use soft toothbrushes and electric razors, wear protective footwear, and avoid risky activities such as climbing on ladders. They should tell every provider and pharmacist what they take, and consider carrying a wallet card. Over-the-counter pain relievers such as ibuprofen and naproxen can raise bleeding risk when combined with anticoagulants, and supplements such as fish oil, ginkgo, and garlic may do the same, so patients should check with the prescriber or pharmacist before using them. Acetaminophen is often a safer first choice for pain, but the physician should confirm that for each patient.
Many surgical patients are on anticoagulants for a limited period to prevent clots, especially after joint replacement, and this overlaps with the DVT awareness discussed in this series’ content on post-orthopedic care. Mild bruising around an injection site can be normal, but spreading bruises, a hard or growing swelling, bleeding from the incision, or a swollen, tender calf deserve a call. Therapy can and should continue, with adjustments: avoid forceful stretching, protect the surgical site, and keep activity progressive but gentle. Never suggest that a patient hold a dose before therapy or a procedure; coordination of medicines around procedures is a physician decision.
Document and communicate. Record anticoagulant and antiplatelet use in the plan of care, include the precautions in your notes, and make sure the interdisciplinary team knows. If a patient falls, bruises significantly, or reports any bleeding, notify the nurse and physician and document what happened, what you observed, and who you called. Teach patients and caregivers the warning signs and make sure they know when to call 911 and when to call the agency. Clear, specific documentation protects the patient and supports the skilled judgment that justified your actions.
Humane Care Therapy Inc. is therapist-owned and OT-operated, and our clinical leadership treats anticoagulant awareness as a core safety competency for every clinician we deploy. We supply licensed physical therapists, occupational therapists, speech-language pathologists, and medical social workers to home health agencies across Houston and Southeast Texas. Call (281) 619-3771, email info@humanecaretherapy.com, or visit humanecaretherapy.com.