Safely Swimming with the Freestyle Libre 3 CGM

Using the Freestyle Libre 3 CGM for Swimming

The waterproof Freestyle Libre 3 continuous glucose monitor (CGM) allows people with diabetes to go swimming while still tracking blood sugar trends. But there are some special considerations for keeping the device accurate and intact during water activities.

Benefits of Swimming with Diabetes

Swimming provides many health perks for those with diabetes including:

• Improved cardiovascular fitness
• Increased insulin sensitivity
• Better blood sugar control
• Weight management
• Reduced risk of complications

Plus, the cooling effect of water makes swimming an ideal summer exercise to prevent heat-induced blood sugar spikes.

Is the Freestyle Libre 3 Waterproof?

Yes! The Freestyle Libre 3 is approved for wear during showering, bathing, and swimming for up to 3 feet depth for up to 30 minutes. This allows users to swim recreationally while still monitoring glucose levels.

Tips for Swimming with the Libre 3 CGM

Here are some best practices for safe, accurate glucose tracking while swimming with the Freestyle Libre 3:

Choose Sensor Site Carefully

Apply sensors on the back of upper arms to keep the device above water and prevent pressure damage from diving movements.

Pay Attention to Warning Symbols

The sensor may display warning icons while submerged meaning data cannot properly be collected. Follow on-screen prompts once out of water.

Take Regular Breaks to Scan

Frequently scan the sensor out of water to download available glucose data and ensure accuracy. This avoids big data gaps.

Hydrate Well After Swims

Replenish fluids before, during, and post-swim to avoid dehydration that can increase blood sugar levels.

Monitor Closely for Hypoglycemia

The risk of low blood sugar tends to be higher after intense water exercise. Carry quick-acting glucose tabs poolside.

Using Water Lock Mode

The Freestyle Libre 3 has a dedicated Water Lock mode to prevent scanning or accidental button pushes while swimming. This reserves sensor memory storage space to accurately record glucose data.

Turn on Water Lock mode in the settings before getting in the water. The mode automatically ends after 3 hours if not disabled manually in the app.

Replace Sensors Frequently

Overexposure to water can degrade the sensor adhesive causing early fall-offs. Plan on replacing Libre 3 sensors more often, up to every 7-10 days if swimming frequently.

Pair with Secondary Monitors

Consider supplemental flash glucose monitoring devices like blood glucose meters to double check number accuracy after water submersion which can dilute interstitial fluid.

Beginner Swimming Guide for Diabetes

Learning basic swimming skills allows you to reap the benefits while staying safe and having fun. Follow these tips for getting started:

Take Lessons

Enroll in adult beginner swim classes at your local aquatic center. Instructors teach proper breathing, buoyancy, body position, and stroke techniques in a graduated progression.

Master Treading Water

Being able to reliably tread water builds endurance while allowing you to take needed breaks mid-swim to scan glucose levels or treat hypoglycemia.

Start Slowly

Begin with easier strokes like doggie paddle focusing on form. Build up gradually from short 5-10 minute swims avoiding overexertion until stamina improves.

Swim With a Partner

Having a buddy to swim with is key for safety. They can monitor you for problematic highs and lows blood sugar symptoms.

Check Blood Sugar Often

Frequently scan your Libre 3 before, several times during, right after swimming and later that day to understand your body's response.

Staying Safe Swimming With Diabetes

While excellent exercise, swimming poses some safety concerns for people with diabetes. Use these precautions to prevent issues:

Prevent and Treat Low Blood Sugar

The risk for hypoglycemia increases during and after swimming. Prevent by:

• Checking glucose before & regularly during swims
• Adjusting insulin doses on swim days
• Eating pre-swim carbohydrate snacks
• Carrying quick sugar sources poolside

Prevent Dehydration

Dehydration raises blood sugar. Remember to:

• Sip water before, during, after swim sessions
• Replace electrolytes post-swim
• Recognize dehydration signs like thirst, headache, fatigue

Handle Device Failure

Though waterproof, overexposure can still damage devices. Be prepared if sensors fail by:

• Having back-up blood glucose monitoring supplies
• Carrying medical ID noting you have diabetes
• Making sure a companion knows about your diabetes

Avoid Swimming Alone

For safety, only swim where lifeguards are present. Have a partner swim with you in case of blood sugar emergencies.

Maintaining Other Diabetes Devices for Swimming

Insulin Pumps

Remove waterproof pumps for swimming. The sites are not meant for water submersion which can loosen adhesion. Swim at peak insulin activity times or switch temporarily to injections.

Continuous Glucose Monitors (CGM)

Most CGMs besides Libre 3 are not waterproof, so remove before swimming and scan shortly after to read data. Store safely poolside while swimming.

Blood Glucose Meters

Have your meter nearby to double check numbers post-swim but keep away from water exposure. Speak to your doctor about getting a waterproof meter for extra safety.

The Takeaway

The Freestyle Libre 3 allows those with diabetes to go swimming while seamlessly monitoring glucose trends. However, take added precautions to keep your CGM functioning properly and ensure number accuracy after water submersion.

Additionally, manage diabetes proactively around swimming by preventing hypoglycemia, dehydration, and device malfunction. Learning strong swimming skills and going with a buddy also keeps your workout safe and fun!

Disclaimer: This article is for informational purposes only and does not constitute medical advice. Always consult with a healthcare professional before starting any new treatment regimen.