Avoid Triggers - Prevent Fainting

20th June 2023 | Dr Boon Lim


Vasovagal syncope and orthostatic intolerance can significantly impact an individual’s quality of life. While it may not always be possible to completely eliminate these conditions, a proactive approach can be taken to prevent episodes through trigger avoidance. This article explores the importance of trigger avoidance in managing vasovagal syncope and orthostatic intolerance, providing insights into common triggers and practical strategies to minimize their impact.

Understanding Triggers

Triggers are specific factors or situations that can provoke symptoms of vasovagal syncope or orthostatic intolerance. Identifying and understanding these triggers is crucial for implementing effective preventive measures. Common triggers include:

Prolonged Standing: Remaining upright for extended periods can lead to blood pooling in the lower extremities, potentially triggering symptoms. Engaging in activities that involve prolonged standing should be approached with caution.

Dehydration: Insufficient fluid intake can result in reduced blood volume and blood pressure, increasing the risk of orthostatic intolerance symptoms. Staying adequately hydrated is essential to maintain proper blood flow regulation.

Heat Exposure: High temperatures or hot environments can cause vasodilation and contribute to blood pooling, potentially leading to syncope or orthostatic intolerance symptoms. Avoiding excessive heat exposure is vital for minimizing the risk of triggers.

Emotional Stress: Emotional stress, anxiety, or fear can activate the body’s stress response, affecting blood pressure and heart rate. Learning stress management techniques and reducing stress levels can be beneficial in preventing symptom triggers.

Postural Changes: Rapid transitions from lying down to standing up can induce sudden drops in blood pressure, triggering symptoms. Making slow, deliberate postural changes and avoiding sudden movements can help prevent symptom onset.

Practical Strategies for Trigger Avoidance

Implementing trigger avoidance strategies can significantly reduce the frequency and severity of vasovagal syncope and orthostatic intolerance episodes. Consider the following approaches:

Maintain Hydration: Drink an adequate amount of fluids throughout the day, especially when engaging in physical activities or spending time in hot environments. Water, electrolyte-rich drinks, and fluids recommended by healthcare professionals can help maintain proper hydration levels.

Use Cooling Measures: When exposed to high temperatures or hot environments, use cooling measures such as fans, air conditioning, or cold compresses to prevent overheating and excessive vasodilation.

Take Breaks and Change Positions: If activities involve prolonged standing, take frequent breaks to sit or rest with leg elevation to reduce blood pooling. When transitioning from lying down to standing, do so slowly and gradually to allow the body to adjust to changes in blood pressure.

Stress Management: Practice stress reduction techniques such as deep breathing exercises, meditation, yoga, or engaging in activities that promote relaxation. Learning effective stress management strategies can help minimize triggers associated with emotional stress.

Wear Compression Garments: Consider wearing compression stockings or garments that provide graduated pressure to the lower extremities. These garments promote better blood flow and reduce the risk of blood pooling, especially during prolonged periods of standing or activities that may trigger symptoms.


Trigger avoidance plays a vital role in preventing vasovagal syncope and orthostatic intolerance episodes. By identifying and understanding individual triggers, individuals can proactively implement practical strategies to minimize their impact. Maintaining proper hydration, managing stress levels, using cooling measures, and making postural changes gradually are essential components of trigger avoidance. It is crucial to work closely with healthcare professionals to develop an individualized trigger avoidance plan and explore additional strategies that cater to specific needs. By incorporating trigger avoidance into daily life, individuals can experience fewer syncope or orthostatic intolerance episodes, enabling a more active and fulfilling lifestyle.

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