Dysphagia Knowledge Hub — 吞嚥困難知識庫

Mendelsohn Maneuver — Complete Clinical Guide for SLPs, Patients, and Caregivers

The Mendelsohn maneuver is one of the oldest and most widely cited swallowing rehabilitation techniques in modern speech-language pathology. Originally described by gastroenterologist Martin Mendelsohn in the 1980s as a way to extend upper esophageal sphincter (UES) opening, it has since evolved from a purely compensatory strategy into a rehabilitative exercise capable of producing measurable physiological change. Despite its long history, it remains widely misunderstood — both in how it is performed and in who actually benefits from it.

This guide consolidates current evidence and clinical practice into a single reference for clinicians prescribing the maneuver, caregivers supporting home practice, and patients learning the technique for the first time.

What the Mendelsohn maneuver actually does

The maneuver is a voluntary prolongation of hyolaryngeal elevation at the peak of the swallow. In a normal swallow, the hyoid bone and larynx travel upward and forward for roughly 0.5–1 second before descending. That upward, anterior pull stretches the cricopharyngeus muscle and contributes to the brief (typically 0.3–0.5 second) opening of the UES through which the bolus passes into the esophagus.

When a patient performs the Mendelsohn maneuver, they consciously hold the larynx at its highest point for two seconds or more before allowing it to descend. The result is a longer, more sustained period of UES opening and traction on the cricopharyngeus.

Two distinct clinical applications emerge from this single physiological effect:

As a compensatory strategy: the maneuver is used in real time during meals to push more bolus through the UES on each swallow, reducing pyriform sinus residue and post-swallow aspiration risk in patients with reduced UES opening.
As a rehabilitative exercise: repeated practice — typically without a bolus — is hypothesized to strengthen the suprahyoid musculature and improve the duration and extent of hyoid excursion over time.

The distinction matters because dosing, instructions, and outcome measures differ substantially between the two uses.

Physiology behind the maneuver

Three muscle groups carry the work of the Mendelsohn maneuver:

Suprahyoid muscles (mylohyoid, geniohyoid, anterior belly of digastric, stylohyoid) — these elevate and anteriorly displace the hyoid.
Thyrohyoid muscle — bridges the hyoid to the thyroid cartilage, transmitting hyoid movement to the larynx.
Pharyngeal constrictors — work synchronously with hyolaryngeal excursion to clear the bolus.

When the hyoid rises, it pulls on the thyroid cartilage via the thyrohyoid membrane and, indirectly, on the cricoid cartilage. The cricoid attachment is the key mechanical link to the cricopharyngeus muscle, which forms the bulk of the UES. Anterior cricoid displacement opens the UES roughly 6 mm in healthy adults, and sustaining that displacement during the Mendelsohn maneuver extends the window for bolus passage.

In patients with reduced hyolaryngeal excursion — particularly post-stroke, post–head and neck cancer treatment, and in advanced presbyphagia — both the height and the duration of UES opening are reduced. The Mendelsohn maneuver targets the duration component directly and may, with sufficient practice, increase the extent component as well.

Who is a candidate?

The maneuver is most appropriate for patients whose instrumental swallowing assessment (VFSS or FEES) demonstrates one or more of the following findings:

Reduced or shortened UES opening with associated pyriform sinus residue
Reduced laryngeal elevation contributing to penetration or aspiration
Discoordination between bolus arrival and UES opening
Post-stroke dysphagia with documented hyolaryngeal weakness
Post–head and neck cancer dysphagia with preserved cognition and motor planning
Cricopharyngeal dysfunction in patients not yet ready for, or not candidates for, balloon dilation, botulinum toxin, or cricopharyngeal myotomy

The maneuver is generally not recommended when patients exhibit:

Significant cognitive impairment that prevents reliable motor learning (the technique requires sustained voluntary control)
Severe apraxia of swallow
Cardiopulmonary instability — the maneuver involves a brief voluntary breath-hold that can stress patients with low cardiac reserve
Severe oropharyngeal weakness where attempting the prolonged hold worsens bolus control and increases aspiration risk
Active uncontrolled gastroesophageal reflux, where prolonged UES opening could theoretically increase retrograde flow

A clinical swallowing examination alone is insufficient to prescribe this maneuver. Pre-treatment instrumental assessment is strongly recommended to confirm the physiological deficit being targeted and to provide a baseline against which to measure change.

How to perform the Mendelsohn maneuver — step by step

The maneuver looks simple but is notoriously difficult for many patients to learn without feedback. Here is the protocol most clinicians use during initial teaching:

Step 1 — Locate the larynx. Ask the patient to place their fingers gently on their own thyroid cartilage (the “Adam’s apple”). Have them swallow saliva once and feel the larynx rise and then descend. This palpation is essential — it gives the patient internal feedback that is otherwise invisible.

Step 2 — Identify peak elevation. Have the patient swallow again, this time noticing the exact moment the larynx reaches its highest point. That peak is the target position to hold.

Step 3 — Practice the hold (dry). Ask the patient to swallow saliva and, at the moment the larynx reaches peak elevation, contract the muscles under the jaw to keep the larynx suspended for a count of two to three seconds, then relax. The patient should feel a deliberate squeezing sensation under the chin and floor of the mouth.

Step 4 — Release smoothly. The descent should be controlled, not sudden. A common error is to release too abruptly, which patients often interpret as “completing” the swallow but which actually defeats the purpose of the prolonged hold.

Step 5 — Repeat with feedback. Most patients need 5–10 attempts before the hold feels natural. Many will need direct clinician palpation, sEMG, or ultrasound feedback (see below) to confirm they are actually elevating the hyoid rather than simply tensing the neck.

A successful Mendelsohn swallow is operationally defined in most research protocols as the ability to swallow and sustain laryngeal elevation for approximately 2 seconds or greater, verified by palpation, sEMG signal, or imaging.

Common errors and how to correct them

The Mendelsohn maneuver is one of the most error-prone exercises in dysphagia therapy. Watch for:

Generalized neck tension instead of suprahyoid contraction. Patients tense the platysma or strap muscles instead of the floor of the mouth. Correct by cueing “squeeze under your chin, not your throat.”
Holding the breath instead of the swallow. Patients perform a Valsalva and call it a Mendelsohn. The larynx must actually rise first and then be held — a breath-hold without elevation produces no UES benefit.
Holding for too long. Extending the hold beyond 3–5 seconds often produces fatigue, fasciculations, and aspiration of pooled saliva. Two seconds is sufficient for most therapeutic goals.
Swallowing too forcefully. The Mendelsohn is not the effortful swallow. Adding excessive bolus-driving force does not improve UES opening duration and may compound fatigue.
Loss of timing with multiple repetitions. As patients fatigue, the hold drifts earlier or later than peak elevation. Build in rest periods.

Dosing — how many, how often, for how long

Published protocols vary widely, but a common rehabilitative dose used in research and clinical practice is:

10 repetitions per set
3 sets per day
5 days per week
For 4–6 weeks minimum before reassessing

Sessions can be split into morning, midday, and evening blocks to reduce fatigue. Patients should rest 30 seconds between repetitions and at least 2 minutes between sets.

Used compensatorily during meals, patients are typically instructed to apply the maneuver on every swallow of food and on alternate swallows of liquid for the duration of the meal, with food selection guided by IDDSI level recommendations from their SLP.

Biofeedback — sEMG, ultrasound, and game-based systems

Because the maneuver is difficult to learn through verbal instruction alone, biofeedback has become a standard adjunct in many clinical settings.

Surface electromyography (sEMG)

Submental sEMG places electrodes under the chin to record activity from the suprahyoid muscle complex. The signal appears as a visible waveform on a screen, allowing patients to see when they are activating the correct muscle group and for how long. sEMG has the longest track record as biofeedback for the Mendelsohn maneuver and is supported by multiple case series and small trials demonstrating improved technique acquisition.

Ultrasound biofeedback

Submental ultrasound visualizes hyoid bone movement in real time. Recent comparison studies have produced mixed but generally favorable results. One pilot trial found ultrasound produced significantly better accuracy than sEMG in acquisition and retention of the maneuver among non-dysphagic adults. A 2022 trial in healthy adults reported that adding ultrasound to verbal and tactile feedback did not significantly increase submental sEMG activity beyond instruction alone, suggesting the benefit of ultrasound may be primarily in motor learning rather than in muscle recruitment per se.

Game-based EMG biofeedback

A 2025 randomized controlled trial in 33 patients with post-stroke dysphagia compared game-based EMG biofeedback against verbal feedback during 15 sessions of Mendelsohn maneuver and effortful swallow training. The game-based group showed higher engagement and adherence, with measurable improvements in submental muscle activation and swallowing outcome measures. Game-based platforms appear particularly useful for adolescent and adult patients who struggle with repetitive home practice.

Cost-benefit perspective for clinics

For services without dedicated biofeedback hardware, clinician palpation combined with patient self-palpation remains a defensible baseline. Mirror feedback adds visual self-monitoring at no cost. A simple submental sEMG unit is the most accessible upgrade and is supported by the deepest evidence base.

Evidence summary — what the maneuver actually changes

Published trials and case series consistently report:

Increased duration of hyoid maximum elevation when the maneuver is performed correctly, with effect sizes large enough to be clinically meaningful.
Increased duration of UES opening, the primary intended mechanism, demonstrated under VFSS in post-stroke patients.
Improvement in Penetration-Aspiration Scale scores in selected post-stroke cohorts after multi-week training.
Increased submental sEMG amplitude during practice swallows, suggesting genuine muscle recruitment changes.
Modest gains in extent of hyoid excursion in some studies, though the maneuver primarily targets duration rather than amplitude.

What the evidence does not strongly support is the use of the Mendelsohn maneuver as a stand-alone treatment. Best outcomes are reported when it is one component of a multimodal program — combined as appropriate with the Shaker exercise or CTAR, tongue-hold (Masako) maneuver, expiratory muscle strength training, and NMES protocols where indicated.

Combining the Mendelsohn maneuver with other techniques

Clinical reasoning for combinations:

Mendelsohn + Shaker/CTAR — both target suprahyoid strength. Sequence to avoid fatigue: typically Shaker/CTAR earlier in the session, Mendelsohn later when the patient is still capable of timed coordination.
Mendelsohn + Effortful Swallow — complementary mechanisms; effortful swallow improves base of tongue retraction and pharyngeal pressure, Mendelsohn extends UES opening. Many programs alternate sets.
Mendelsohn + EMST — EMST targets expiratory and reflex cough capacity, providing a margin of safety while Mendelsohn extends UES window during meals.
Mendelsohn + sEMG biofeedback — most consistent evidence base for accelerated technique acquisition; recommended for the first 4–6 sessions and tapered as the patient demonstrates independent accuracy.

Caregiver coaching points

When a Mendelsohn maneuver home program is prescribed, caregivers play a critical role in adherence and safety. Coach them to:

Watch for the visible upward movement of the larynx — if they do not see it rise, the patient is almost certainly not performing the maneuver correctly.
Time the hold with a phone stopwatch for the first week, then taper as the patient develops internal timing.
Avoid pushing the patient through fatigue. A reduced rep count performed correctly beats a full set performed incorrectly.
Stop practice immediately and contact the SLP if the patient develops new coughing, throat pain, hoarseness, or breathing difficulty during sessions.
Document missed sessions and any qualitative changes — these notes feed directly into the next clinical review.

When to reassess and when to discontinue

Plan a formal reassessment at 4–6 weeks. The reassessment should ideally include repeat instrumental imaging (VFSS or FEES) to compare hyoid kinematics, UES opening duration, and Penetration-Aspiration Scale scores against baseline. Functional measures such as the Functional Oral Intake Scale (FOIS) and patient-reported outcomes via the EAT-10 provide additional layers of data.

Continue the program if there is measurable physiological or functional improvement and the patient tolerates the regimen. Modify dose if fatigue or accuracy is limiting progress. Discontinue and pivot to alternative or surgical options if there is no measurable change after 8 weeks of well-executed practice, particularly in patients with structural cricopharyngeal pathology that may require dilation, botulinum toxin, or myotomy.

The bottom line

The Mendelsohn maneuver remains a useful and well-evidenced tool for a specific subset of dysphagia patients — those with reduced UES opening duration and intact cognitive and motor capacity to learn the technique. Its limitations are well known: it is difficult to teach without biofeedback, it does not work as a stand-alone treatment, and it is contraindicated in significant cognitive impairment. Used carefully, with appropriate candidate selection, instrumental confirmation, structured dosing, and biofeedback support, it earns its place in the modern dysphagia rehabilitation toolkit.

This article is for clinical education and is not a substitute for individualized assessment by a qualified speech-language pathologist. Patients with suspected dysphagia should be evaluated before beginning any swallowing exercise program.