A cancer diagnosis and its subsequent treatment can change many aspects of daily life. One of the most challenging, yet often overlooked, side effects is dysphagia, or difficulty swallowing. This essential function, which we usually take for granted, is a complex process involving coordinated movements in the mouth and throat. When treatments affect these areas, eating and drinking can become difficult and stressful.
This article will explore why swallowing problems occur after cancer treatment and discuss practical exercises and strategies that can help manage them.
Important Disclaimer: The information provided in this blog is for educational and awareness purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Please consult with your physician, oncology physiotherapist, or speech-language pathologist before beginning any new exercise or postural program to ensure it is safe and appropriate for your specific condition.
How Cancer Treatments Can Affect Swallowing
Cancer treatments are designed to be powerful, but they can also impact the healthy tissues responsible for swallowing.
- Surgery: Procedures to remove tumors in the head, neck, mouth, or throat can be a direct cause of dysphagia. The removal of tissue can alter the anatomy needed for swallowing , and potential nerve damage can lead to weakness and poor coordination of the swallowing muscles. Additionally, scar tissue that forms during healing is less flexible, which can restrict movement.
- Radiation Therapy: Radiation to the head and neck can lead to both short-term and long-term issues. Side effects can include painful sores (mucositis) that make swallowing difficult , severe dry mouth (xerostomia) due to salivary gland damage , and a long-term stiffening of tissues known as fibrosis. Muscles can also weaken over time from radiation exposure.
- Chemotherapy: Because chemotherapy affects the entire body, it can contribute to dysphagia in several ways. Like radiation, it can cause painful mucositis. The profound fatigue that often accompanies chemotherapy can make the muscular effort of chewing and swallowing feel exhausting , while side effects like nausea can reduce appetite altogether.
Assessing and Diagnosing Dysphagia: Key Tests and Measures
For an individual experiencing swallowing difficulties (dysphagia), a thorough assessment is crucial to identify the specific nature of the problem and to guide treatment. This is typically performed by a speech-language pathologist, often in collaboration with a physiotherapist and medical team. The assessment process includes a range of tools, from simple bedside screenings to advanced instrumental examinations.
1. Clinical Bedside Examinations
These are initial assessments performed to screen for dysphagia and determine if further testing is needed.
- Mann Assessment of Swallowing Ability (MASA): This is a widely used, standardized assessment that scores a patient on 24 different areas related to swallowing function. It evaluates alertness, cooperation, auditory comprehension, and various oral motor and sensory functions. The final score helps to determine the severity of dysphagia and can indicate if there is a risk of aspiration (food or liquid entering the airway).
- Timed Water Swallow Test (TWST): A simple screening tool where the patient is asked to drink a specific volume of water (e.g., 150ml) from a cup as quickly and safely as possible. The therapist measures the time taken and the volume swallowed, while also observing for signs of difficulty like coughing, choking, or changes in voice quality.
- Repetitive Saliva Swallowing Test (RSST): This test assesses voluntary swallowing function. The patient is instructed to swallow their own saliva as many times as possible within 30 seconds. A reduced number of swallows can indicate weakness or poor coordination in the swallowing muscles.
2. Patient-Reported Outcome Measures (PROMs)
These are questionnaires that help measure the patient’s own perception of their swallowing difficulty and its impact on their quality of life.
- EAT-10 (Eating Assessment Tool-10): A simple, 10-item questionnaire where patients rate the severity of their swallowing problems. A score above 3 indicates a potential swallowing problem and the need for a more comprehensive evaluation.
- SWAL-QOL (Swallowing Quality of Life Questionnaire): A more detailed questionnaire that assesses the impact of dysphagia across various domains, including social functioning, sleep, fatigue, and communication. It provides a comprehensive picture of how swallowing difficulties are affecting the patient’s daily life.
3. Instrumental Assessments
These are objective, technology-based examinations that allow clinicians to directly visualize the swallowing process. They are considered the gold standard for diagnosing dysphagia.
- Videofluoroscopic Swallowing Study (VFSS): Also known as a Modified Barium Swallow (MBS), this test is a moving X-ray of the swallow. The patient consumes different consistencies of food and liquid that are mixed with barium, a contrast material that shows up on X-ray. The VFSS allows the clinical team to see exactly what is happening in the mouth and throat during the swallow, identify if aspiration is occurring, and test the effectiveness of different postures or strategies in real-time.
- Fiberoptic Endoscopic Evaluation of Swallowing (FEES): In this procedure, a thin, flexible tube with a camera on the end (an endoscope) is passed through the nose and into the pharynx (throat). This allows the clinician to directly view the larynx and surrounding structures before and after the swallow. The FEES test is excellent for assessing how well the airway is protected and for identifying any food or liquid residue left in the throat after swallowing.
Simple Postural Changes to Make Swallowing Safer
Making simple adjustments to your posture can be a highly effective way to improve swallowing safety and efficiency. These techniques change the flow of food and liquid, helping to prevent it from entering the airway. A therapist will help determine the best technique for you.
- Chin Tuck: Tucking your chin toward your chest before and during a swallow helps narrow the airway entrance, offering extra protection. It also widens the space at the base of the tongue, giving you more time to manage the swallow.
- Head Turn: This technique is useful for weakness on one side of the throat. By turning your head toward the weaker side, you effectively close it off and direct food down the stronger, more functional path
- Head Tilt: If weakness is primarily in your mouth, tilting your head toward the stronger side uses gravity to help you control the food better during chewing
Exercises to Strengthen Your Swallow
A physiotherapist or a speech-language pathologist may recommend specific exercises to strengthen the muscles and improve the coordination involved in swallowing. These exercises are based on principles of muscle strengthening, increasing range of motion, and enhancing neuromuscular control..
Exercises for Oral Control– These exercises target the lip, tongue, and cheek muscles to help you better prepare food in your mouth.
- Tongue Strengthening: Push your tongue against a tongue depressor or the roof of your mouth. A strong tongue is vital for moving food and forming it into a “ball” (bolus) for swallowing.
- Lip Strengthening: Practice puckering your lips, smiling widely, and pressing your lips together tightly. A good lip seal is necessary to prevent food or liquid from dribbling out of your mouth.
Exercises for Throat (Pharyngeal) Improvement
These exercises focus on the critical phase where food moves to the esophagus while the airway is protected.
- Effortful Swallow: Swallow your own saliva with as much force as you can, squeezing all of your throat muscles. This helps clear any leftover food from your throat and reduces the risk of it entering the airway.
- Masako Maneuver (Tongue-Hold): Gently hold the tip of your tongue between your teeth and swallow your saliva (do not do this with food or liquid). This strengthens the muscles in the back of your throat, which helps improve pressure during a regular swallow.
Exercises for Airway Protection
These exercises help lift the voice box (larynx) and open the top of the esophagus.
- Supraglottic Swallow: Take a deep breath and hold it. Swallow while still holding your breath, and then cough immediately after you swallow before you inhale again. Holding your breath closes your vocal folds, and the cough helps clear any residue.
- Super-Supraglottic Swallow: This is the same as the above technique, but you also bear down (like you are having a bowel movement) while holding your breath. This action provides even more protection for your airway.
Living with dysphagia can be challenging, but with the right guidance and exercises, you can take active steps to improve your swallowing function and safety. Remember to always work closely with your healthcare team to find the best strategies for you.
Navigating your recovery is a journey, and managing side effects like dysphagia is a critical part of cancer rehabilitation. The swallowing exercises and techniques discussed here are key components of oncology physiotherapy, especially for those who have undergone head and neck cancer treatment. Remember, this guide is a starting point. A dedicated cancer rehab program, designed by a professional, can help address specific. Taking proactive steps with a qualified oncology physiotherapist is the best way to improve your function and regain confidence after cancer.
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Illustrative images on this blog are generated using AI tools like Gemini
