Deep vein thrombosis - Nursing Case Study

Pathophysiology

• Primary mechanism: Blood Stasis - This occurs when blood flow slows down in the deep veins, often due to immobility, leading to clot formation. Stagnant blood provides time for clotting factors to trigger a clot.

• Secondary mechanism: Hypercoagulability - Conditions like pregnancy, certain medications, or genetic factors increase the tendency of blood to clot more than usual, contributing to thrombosis in veins.

• Key complication: Embolism Risk - A clot from a deep vein can break loose and travel to the lungs, causing a pulmonary embolism, which can be life-threatening and requires immediate medical attention.

Patient Profile

Demographics:

35-year-old female, office worker

History:

• Key past medical history: No significant past medical history

• Current medications: Oral contraceptive pill

• Allergies: None

Current Presentation:

• Chief complaint: Mild swelling and discomfort in the left calf

• Key symptoms: Tenderness and slight redness in the left calf, no shortness of breath or chest pain

• Vital signs: Blood pressure 118/76 mmHg, heart rate 78 bpm, respiratory rate 16 breaths per minute, temperature 98.6°F, oxygen saturation 98% on room air

Section 1

Initial Assessment Findings:

Upon further assessment, the nurse notes that the patient's left calf is slightly warmer to the touch compared to the right calf, and there is mild pitting edema present. The circumference of the left calf measures 3 cm larger than the right calf, indicating localized swelling. The patient reports the discomfort increases when she stands or walks but improves slightly with elevation. Upon palpation, there is noticeable tenderness along the deep venous pathway, though the Homan's sign is negative, which is not entirely reliable but noted for documentation purposes.

The nurse performs a thorough health history and physical examination, confirming that the patient works long hours at a desk and has minimal opportunities for movement throughout the day. This immobility, combined with her use of the oral contraceptive pill, increases her risk for developing a deep vein thrombosis (DVT). The nurse educates the patient on the importance of leg exercises, frequent walking breaks, and hydration to help prevent further blood stasis.

As part of the initial assessment, a Doppler ultrasound is ordered to confirm the presence of a thrombus in the deep veins. While awaiting results, the nurse ensures the patient's comfort by recommending leg elevation and administering prescribed analgesics to manage discomfort. The patient is advised to avoid massaging the calf to prevent potential embolization of the clot. These steps lay the groundwork for the next phase of the patient's management, focusing on diagnostic clarification and prevention strategies.

Section 2

New Diagnostic Results:

The Doppler ultrasound results confirm the presence of a thrombus in the patient's left popliteal vein. This finding aligns with the clinical signs observed during the initial assessment, such as the localized swelling, warmth, and tenderness. The patient's vital signs are stable, with a blood pressure of 118/76 mmHg, heart rate of 82 beats per minute, respiratory rate of 16 breaths per minute, and an oxygen saturation of 98% on room air. Her temperature is slightly elevated at 37.5°C (99.5°F), which may be a mild inflammatory response to the clot.

Based on these diagnostic results, the healthcare team initiates anticoagulant therapy to prevent further clot formation and potential complications. The nurse educates the patient about the importance of adhering to the medication regimen, monitoring for any signs of bleeding, and recognizing symptoms that warrant immediate medical attention, such as sudden shortness of breath or chest pain, which could indicate a pulmonary embolism. The patient's current lab values, including a baseline complete blood count and coagulation profile, are within normal limits, providing a safe starting point for anticoagulation.

The patient expresses understanding of the treatment plan and commits to making lifestyle modifications to reduce her risk factors. She plans to incorporate regular standing and walking breaks into her workday and has already begun practicing leg exercises during her hospital stay. The nurse reinforces the importance of these preventive measures and ensures the patient is comfortable with the ongoing care plan, setting the stage for her transition to outpatient management and continued recovery.

Section 3

Response to Interventions:

Over the next 48 hours, the patient shows a positive response to the anticoagulant therapy. Her symptoms of localized swelling and tenderness in the left leg have decreased, and the warmth in the area has lessened. The patient reports feeling more comfortable and is able to participate in her leg exercises with greater ease. Her vital signs remain stable, with a blood pressure of 116/74 mmHg, heart rate of 80 beats per minute, respiratory rate of 16 breaths per minute, and oxygen saturation at 98% on room air. Her temperature has normalized to 37°C (98.6°F), indicating a resolution of the mild inflammatory response.

The nurse conducts regular assessments to monitor for any adverse effects of the anticoagulant therapy. The patient is instructed on how to recognize signs of bleeding, such as unusual bruising or blood in the urine or stool. Lab work, including complete blood count and coagulation profile, is monitored closely; results show the patient's international normalized ratio (INR) is gradually approaching the therapeutic range, suggesting effective anticoagulation without risk of overmedication. The nurse continues to provide education and support, reinforcing the importance of medication adherence and lifestyle changes.

As the patient prepares for discharge, the healthcare team finalizes her outpatient care plan. This includes follow-up appointments for lab monitoring and a consultation with a nutritionist to support her in making heart-healthy dietary choices. The patient expresses confidence in managing her condition at home and is eager to implement the recommendations provided by her care team. This successful initial response to treatment sets a positive trajectory for her ongoing recovery and risk reduction.

Section 4

New Complications:

Despite the initial positive response to anticoagulant therapy, the patient experiences a minor setback two days later when she notices a small amount of blood in her urine. Concerned about this new development, she contacts her nurse, who advises her to come in for an evaluation. Upon assessment, the nurse finds that the patient remains hemodynamically stable, with a blood pressure of 114/72 mmHg, heart rate of 78 beats per minute, and oxygen saturation at 98% on room air. However, the presence of hematuria requires further investigation to rule out potential complications related to anticoagulation therapy.

The healthcare team promptly orders a urinalysis and a repeat coagulation profile. The urinalysis confirms the presence of red blood cells in the urine, while the coagulation profile indicates that the patient's international normalized ratio (INR) has slightly exceeded the therapeutic range. In light of these findings, the physician adjusts the patient's anticoagulant dosage to bring her INR back within the optimal range. The nurse educates the patient on the importance of monitoring for additional signs of bleeding and reinforces adherence to the revised medication regimen.

As the patient resumes her recovery, she is reassured by the team's swift response and clear communication. The collaborative approach ensures her confidence in managing her condition, emphasizing the importance of timely reporting of symptoms and adherence to follow-up care. With the revised anticoagulation plan in place, the patient is encouraged to continue her leg exercises and maintain her heart-healthy lifestyle changes, setting the stage for her ongoing recovery and prevention of future complications.

Section 5

New Diagnostic Results:

In the following days, the patient returns for a follow-up appointment, where the healthcare team conducts further assessments to ensure her condition remains stable. The nurse performs a comprehensive evaluation, noting that the patient continues to show vital signs within normal limits: blood pressure is 116/74 mmHg, heart rate is stable at 76 beats per minute, and oxygen saturation remains at 98% on room air. The patient's leg, previously affected by deep vein thrombosis, shows no signs of swelling or tenderness, indicating that the clot is being effectively managed.

The healthcare team reviews the results of a follow-up coagulation profile and urinalysis to monitor the patient's response to the adjusted anticoagulation therapy. The repeat coagulation profile reveals that the patient's INR has successfully returned to the therapeutic range, now at 2.5. The urinalysis shows a significant reduction in the number of red blood cells, suggesting that the hematuria is resolving. These findings reassure both the patient and the healthcare team that the adjustments to her medication regimen are proving effective.

With these positive diagnostic results, the nurse takes the opportunity to reinforce vital education points with the patient. The nurse reviews the signs of potential bleeding and the importance of adhering to the prescribed medication schedule. Additionally, the patient is encouraged to maintain her heart-healthy lifestyle, including regular physical activity and a balanced diet, to further support her recovery and prevent future thrombotic events. This proactive approach empowers the patient to take an active role in her health management and sets the stage for continued progress in her recovery journey.