How to Deal with "Compression Lows" from Your CGM

How to Deal with "Compression Lows" from Your CGM

When using a Continuous Glucose Monitor (CGM), you may occasionally experience "compression lows" - a temporary and often unexpected drop in your blood sugar level. These lows are usually caused by the CGM sensor compressing the skin or being inserted too tightly, restricting blood flow to the area and affecting the accuracy of the readings.

Recognizing Compression Lows

Compression lows can be identified by a sudden and significant drop in your blood sugar level, often accompanied by a corresponding increase in your CGM's trend arrow. These lows are usually temporary and can be treated with a quick snack or drink to raise your blood sugar level.

Causes of Compression Lows

There are several reasons why compression lows may occur, including:

  1. Sensor compression: If the CGM sensor is inserted too tightly or is compressing the skin, it can restrict blood flow to the area, leading to inaccurate readings and compression lows.
  2. Skin irritation: Skin irritation or inflammation around the sensor site can also cause compression lows, as the body reacts to the presence of the sensor.
  3. Sensor movement: If the CGM sensor moves around during the day, it can cause compression lows by compressing the skin and restricting blood flow.
  4. Poor sensor placement: If the CGM sensor is not placed correctly or is not secured properly, it can lead to compression lows.

Managing Compression Lows

To manage compression lows, follow these steps:

  1. Check the sensor: Verify that the CGM sensor is properly inserted and not compressing the skin. If the sensor is too tight, gently remove it and reinsert it at a different angle.
  2. Adjust the sensor: If the sensor is not compressing the skin, try adjusting its placement to a different location on the body.
  3. Use a skin prep: Apply a skin prep to the sensor site to reduce skin irritation and inflammation.
  4. Take regular readings: Continue to take regular blood glucose readings to monitor your blood sugar levels and adjust your treatment plan as needed.

Preventing Compression Lows

To prevent compression lows from occurring in the first place, follow these tips:

  1. Use a CGM with a secure adhesive: Choose a CGM with a secure adhesive that will not fall off or move around during the day.
  2. Insert the sensor correctly: Follow the manufacturer's instructions for inserting the CGM sensor, and ensure that it is properly secured to the skin.
  3. Monitor the sensor: Regularly check the CGM sensor for signs of compression or skin irritation, and adjust its placement as needed.
  4. Take regular breaks: Take regular breaks to remove the CGM sensor and inspect the skin for signs of irritation or inflammation.

By following these steps and taking preventative measures, you can reduce the occurrence of compression lows and ensure that your CGM provides accurate readings. If you experience frequent or persistent compression lows, consult with your healthcare provider for further guidance and support.