A gastric emptying scan is a specialized test used to evaluate how well your stomach empties its contents into your small intestine. If you’ve been experiencing symptoms like nausea, vomiting, bloating, or unexplained weight loss, your doctor might recommend this procedure to diagnose conditions such as gastroparesis or other motility disorders. Preparing properly for the scan ensures accurate results, so understanding what to do beforehand, what to expect during the test, and how to interpret the results is essential for a smooth experience and effective diagnosis.
What You’ll Need
- Doctor’s instructions for preparation
- Possibly a special diet or fasting prior to the test
- Any medications your doctor advises you to continue or stop
- Comfortable clothing and shoes for the test appointment
- Someone to drive you home afterward, if sedation is used
Step-by-Step
- Follow Your Doctor’s Instructions: Before the scan, your doctor will provide specific guidelines, which often include fasting for 4-6 hours prior to the test. Some instructions may also specify avoiding certain medications or foods. Carefully read and adhere to these instructions to ensure the accuracy of the results.
- Prepare Your Meal: You may be asked to eat a special radiolabeled meal, usually consisting of a small amount of a radioactive substance combined with a standard meal (like eggs or oatmeal). This meal is designed to emit a small amount of radiation detectable by the scanner.
- Arrive at the Imaging Center: On the day of your appointment, arrive on time. You might be asked to change into a gown and remove jewelry or metal objects that could interfere with imaging.
- Eat the Radiolabeled Meal: Under supervision, consume the prepared meal. The technician will note the time you finish eating, as this marks the start of the imaging process.
- Begin Imaging: The scan typically involves lying on a table that slides into a gamma camera. You’ll be asked to remain still during the imaging, which may last 1-2 hours. You might be asked to sit up or change positions periodically to get comprehensive images.
- Complete the Procedure: Once the imaging is complete, you can usually resume normal activities. If your doctor used a radioactive meal, ensure you follow any post-test instructions, such as hydration or avoiding contact with pregnant women or children for a short period.
- Follow-up: Your doctor will review the images and send a report to your referring healthcare provider, who will discuss the results with you during a follow-up appointment.
Common Mistakes
- Eating or drinking outside of instructions: Consuming food or beverages not approved by your doctor before the test can skew results.
- Not fasting as directed: Failing to fast for the required period can cause inaccurate measurements of gastric emptying.
- Forgetting medication instructions: Continuing or stopping medications without guidance can affect gastric motility and test accuracy.
- Not informing staff about allergies or pregnancy: Although rare, some radiotracers could pose risks for certain individuals.
- Moving during the scan: Movement can blur images, so remaining still is crucial.
Tips
- Follow all fasting and medication instructions precisely to ensure the best possible results.
- Wear comfortable, loose-fitting clothing without metal fasteners or accessories.
- Arrive early to allow time for check-in and preparation.
- Stay relaxed and still during the imaging to avoid blurring the images.
- Discuss any concerns or questions with your healthcare provider beforehand.
Troubleshooting
If the scan does not go as planned, or if your symptoms worsen, contact your healthcare provider promptly. Common issues include inability to stay still, allergic reactions (rare), or unexpected side effects. If images are unclear, you may need a repeat scan or additional tests to clarify the results. Always inform the staff immediately if you experience discomfort, dizziness, or other adverse effects during the procedure. Following their guidance can help ensure your safety and the accuracy of your diagnosis.
Frequently Asked Questions
1. How accurate is a gastric emptying scan?
It is highly accurate for measuring how fast your stomach empties, especially useful for diagnosing gastroparesis and other motility disorders.
2. Are there any risks associated with the scan?
The radiation exposure is minimal and generally safe. Inform your doctor if you are pregnant or breastfeeding, as special precautions may be needed.
3. How long does the entire process take?
The preparation, eating, and imaging typically take around 2-3 hours in total, with the imaging itself lasting about 1-2 hours.
4. Can I eat or drink normally after the test?
Yes, unless instructed otherwise. You can usually resume your normal diet and activities immediately after the scan.
5. What do the results mean?
Results indicate how quickly your stomach empties. A delayed emptying time suggests gastroparesis or other motility issues, guiding further treatment.
6. Will I need follow-up tests?
Depending on the results, your doctor may recommend additional tests or treatments to address your symptoms effectively.