What is the recommended management of antithrombotic therapy in patients with a mechanical heart valve?
INR targets based on:
* Type and position of MHV
* Patient’s risk factors
* Comorbidities
MHV stands for mechanical heart valve.
What is the first-line treatment for patients with a mechanical heart valve?
VKA only
VKA refers to vitamin K antagonists.
What are the INR targets for the following types of mechanical heart valves?
1. Ball-in cage, tilting disc valve in any position
2. Bileaflet, current generation single-tilting aortic MHV
- 3 (2.5-3.5)
- 3.5 (3-4)
These targets are crucial for managing anticoagulation therapy.
What additional pro-thrombotic factors may affect INR targets?
- Inherited or acquired hypercoagulable state
- LV dysfunction (LVEF <35%)
- AF with significant MS
- Recent major thrombotic event
Examples of major thrombotic events include cardioembolic stroke, deep vein thrombosis, and pulmonary embolism.
True or false: Inherited or acquired hypercoagulable state is an additional pro-thrombotic factor that affects INR targets.
TRUE
This condition increases the risk of thrombotic events.
What should be considered in patients with an estimated long life expectancy regarding prosthetic valve selection?
An MHV should be considered if there are no contraindications for long-term OAC
MHV refers to mechanical heart valves, which are often chosen for patients expected to live long.
What is recommended for improving the quality of OAC in patients with a mechanical heart valve?
Patient education
OAC stands for oral anticoagulation, which is crucial for managing antithrombotic therapy.
What does OAC stand for in the context of prosthetic valves?
Oral anticoagulation
OAC is essential for patients with mechanical heart valves to prevent thromboembolic events.
True or false: Patient education is not important for improving the quality of OAC.
FALSE
Patient education is recommended to enhance the management of antithrombotic therapy.
What is the recommended action for antithrombotic therapy following mechanical heart valve implantation?
Start UFH or LMWH bridging and VKA within 24 h or as soon as considered safe
This is classified as Class I recommendation.
What is the lifelong therapy for patients with a mechanical heart valve?
Lifelong VKA with INR based on individual patient profile and valve characteristics
Patient education and training for self-monitoring are encouraged to improve TTR.
What is the recommendation for VKA interruption before elective NCS?
VKA interruption at least 4 days before surgery and resumption within 24 h
This is a Class I recommendation.
What should be done for minor or minimally invasive interventions regarding VKA?
Continue VKA
This is classified as Class I recommendation.
What should be done if there are thromboembolic risk factors?
Increase INR target, or add low-dose ASA
This is classified as Class IIA recommendation.
What is the recommendation for heparin bridging in specific clinical scenarios?
Heparin bridging
This is classified as Class IIA recommendation.
What should be added for patients with symptomatic atherosclerotic disease?
Add low-dose ASA based on individual bleeding profile
This is classified as Class IIA recommendation.
What is the recommendation for VKA interruption before surgery without bridging?
VKA interruption (3-4 days before surgery) and resumption (within 24 h) without bridging
This is classified as Class IB recommendation.
What is the indication for long-term anticoagulation following biological heart valve implantation or surgical valve repair?
OAC long term (Class I)
This is recommended for patients after MVR/TVR.
What is the recommended duration for OAC after surgical aortic valve replacement (SAVR)?
OAC long term (Class I)
This applies to patients following SAVR.
What is the recommendation for ASA usage after TAVI?
ASA for 12 months (Class I)
After the first 12 months, ASA long term is recommended.
What is the recommendation for ASA long term usage according to bleeding risk?
ASA long term according to bleeding risk (Class IIb)
This is applicable for patients assessed for bleeding risk.
What is the duration of OAC recommended for patients with high bleeding risk?
OAC long term (Class I)
This recommendation is for patients identified with high bleeding risk.
What is the duration of OAC recommended for surgical repair of MV/TV?
OAC for 3 months (Class IIa)
This applies to patients undergoing surgical repair.
What is the recommendation for ASA after 3 months following surgical aortic repair?
ASA for 3 months (Class Ib)
This is a short-term recommendation post-surgery.
