Feeling cold during colonoscopy preparation is a common and normal experience for many individuals. Several physiological factors contribute to this sensation, making it a widespread occurrence.
Understanding Why You Might Feel Cold
The bowel preparation process involves consuming a large volume of liquid laxatives, leading to significant fluid loss through frequent bowel movements. This rapid fluid excretion can cause dehydration and shifts in the body’s electrolyte balance. Both dehydration and electrolyte disturbances, such as imbalances in sodium or potassium, can impact the body’s ability to regulate its temperature.
Restricted food intake, typically a clear liquid diet, before a colonoscopy also reduces the body’s metabolic heat production. Food digestion contributes to thermogenesis, the process by which the body generates heat. With minimal or no solid food intake, this internal heat source is significantly diminished, leading to a cooler body temperature.
Some individuals may also experience vasodilation, a widening of blood vessels, as the body attempts to excrete fluids. This can cause blood to move closer to the skin’s surface, leading to a sensation of coldness even if the core body temperature remains stable. The sheer volume of cold fluids consumed as part of the prep solution can also directly contribute to feeling chilled.
Anxiety and stress related to the upcoming procedure can also influence temperature perception. The body’s “fight or flight” response, activated by stress, can affect blood flow and how temperature is perceived. Finally, the ambient temperature of the environment plays a role, especially if an individual is lightly dressed while frequently using the bathroom.
Managing Discomfort and Knowing When to Call Your Doctor
To manage the discomfort of feeling cold during colonoscopy prep, consider wearing warm, loose-fitting clothing, such as pajamas or sweatpants, and using blankets. Drinking approved warm clear liquids, like clear broths or decaffeinated tea, can help raise body temperature internally. Maintaining a warm environment at home, perhaps by adjusting the thermostat or using a space heater in the bathroom, can also provide comfort.
Light, gentle movement, such as walking around the house, may help stimulate circulation, but strenuous activity should be avoided. Also, prioritize hydration by consuming the recommended clear liquids, including electrolyte-rich beverages, to counteract fluid loss.
It is important to recognize when coldness might indicate a more serious issue requiring medical attention. Contact your doctor or medical team if you experience severe, uncontrollable shivering, especially if accompanied by a fever above 100.4°F (38°C). Seek medical advice for signs of severe dehydration, such as severe dizziness, confusion, or significantly decreased urination. Any new or worsening symptoms not typical for the preparation process, including persistent nausea or vomiting, should also prompt a call to your healthcare provider.