MD Anderson Dysphagia Inventory Research Articles

The relationship between depressive symptoms, quality of life, and swallowing function in head and neck cancer patients 1 year after definitive therapy

To determine the incidence of depression in head and neck cancer (HNCA) patients following definitive treatment and the relationship between depression and head and neck-specific measures of quality of life and function. Prospective cohort analysis. Two hundred forty-six patients were evaluated with the Beck Depression Inventory Fast-Screen (BDI-FS), University of Washington Quality of Life (UW QOL), Voice Handicap Index (VHI), and MD Anderson Dysphagia Inventory (MDADI) questionnaires. Patients with a preexisting diagnosis of depression were excluded. Complete 1-year post-treatment data were available for 46 HNCA patients, with depression identified in nine patients (20%). On multivariate analysis, depression was significantly associated with poorer global UW QOL (β = -40.3, P < .001) and overall MDADI scores (β = -21.8, P = .038), but not with VHI scores, after controlling for other clinical variables including initial treatment modality. BDI-FS scores were significantly correlated with global UW QOL (r = -0.7, P < .001) and overall MDADI scores (r = -0.5, P = .0045), and global UW QOL correlated significantly with overall MDADI scores (r = 0.4, P = .0166). After controlling for clinical variables, MDADI, and VHI scores, only depression was associated with global UW QOL score (β = -30.5, P = .019). There is a high incidence of depressive symptoms in HNCA patients at 1 year following definitive therapy, which is independent of primary treatment modality and is associated with poorer global QOL and MDADI scores. Although depression and swallowing function are highly correlated, depression has a greater effect on QOL than swallowing scores, suggesting that early identification and aggressive treatment of patients with depressive symptoms is warranted to maximize post-treatment QOL.

Transoral robotic surgery: Tongue base reduction and supraglottoplasty for obstructive sleep apnea

A transoral robotic version of Chabolle's tongue base reduction with hyoid epiglottoplasty for obstructive sleep apnea syndrome is described. The main tongue base and supraglottic surgical steps are pointed out, as well as the indications and potential complications. The advantages and limits of this minimally invasive approach are discussed.

Voice and swallowing after partial laryngectomy: Factors influencing outcome

The purpose of this study was to assess the factors influencing swallowing and phonatory results after partial laryngectomy. We carried out a medical chart review of patients who underwent partial laryngectomies between June 2003 and November 2010, focusing on functional outcomes. Thirty-two patients were enrolled. No statistically significant difference was found in the comparison of phonatory outcomes of patients with preservation of both arytenoids; the results of the Yanagihara classification were significantly different (p = .015) in patients with an atypical neoglottis; radiotherapy statistically significantly influenced only the mean fundamental frequency (p = .035). The type of partial laryngectomy does not seem to affect the deglutition results; radiotherapy statistically significantly affected the dysphagia score (DS; p = .03), penetration aspiration (p = .02), and MD Anderson Dysphagia Inventory (MDADI; p = .02). Horizontal supraglottic laryngectomy and supracricoid partial laryngectomy give the same swallowing results. The presence of both arytenoids does not influence the final outcome compared to patients in whom only 1 arytenoid is preserved. Postoperative radiotherapy only influences the swallowing function.

The Dysphagia Short Questionnaire

Prospective clinical validation study of questionnaire to assess dysphagia. To test validity and reliability of Dysphagia Short Questionnaire (DSQ), and also to determine levels of dysphagia over time after anterior cervical spine surgery (ACSS). Dysphagia is common after ACSS but reports on the incidence vary widely between 1% and 79%, indicating an evaluation problem. Several tools for evaluation of dysphagia exist but common features are that they are cumbersome to use and usually are designed for patients with neurological or malignant diseases in the neck region. Others are not validated, for example, the Bazaz score. There is, thus, a need for a more adapted tool to evaluate dysphagia in patients undergoing ACSS. The DSQ was constructed in collaboration with a group of ear-nose-and-throat specialists. In a first validation study, 45 patients with stationary dysphagia for various reasons completed the DSQ twice 2 weeks apart, the M.D. Anderson Dysphagia Inventory (MDADI), the Bazaz score, and a quality-of-life score, the EQ-5D. To evaluate the utility of the DSQ, a second validation study was performed, where 111 subjects undergoing ACSS for degenerative disk disease completed the form preoperatively and at 4 weeks, 3 months, and 1 year after surgery. In the first study, the DSQ correlated to MDADI (r = 0.59) and showed good reproducibility. The Bazaz score did not correlate to the DSQ, the MDADI, or the EQ-5 D. In the second study, dysphagia was present in a few patients already preoperatively. At 4 weeks, 85% of the patients reported dysphagia. The level had dropped significantly at 3 months and had returned to baseline levels at 1 year. We consider the DSQ to be a validated tool for the assessment of dysphagia in ACSS patients. Dysphagia after ACSS for cervical spondylosis is common but the symptoms on a group level are not very severe and are also temporary.

Validation of the Swedish M. D. Anderson Dysphagia Inventory (MDADI) in Patients with Head and Neck Cancer and Neurologic Swallowing Disturbances

The aim of this study was to validate the Swedish version of the dysphagia-specific quality-of-life questionnaire, the M. D. Anderson Dysphagia Inventory (MDADI). Patients with oropharyngeal dysphagia due to neurologic disease (n=30) and head and neck (H&N) cancer patients with post-treatment subjective dysphagia (n=85) were compared to an age- and gender-matched nondysphagic control group (n=115). A formal forward-backward translation was performed and followed international guidelines. Validity and reliability were tested against the Short-Form 36 (SF-36) and Hospital Anxiety and Depression Scale (HADS). Internal-consistency reliability was calculated by means of Cronbach's α coefficient. Test-retest reliability was assessed by intraclass correlation (ICC). Convergent and discriminant validity were assessed by correlations between MDADI, SF-36, and HADS. Known-group validity was examined and statistically tested. Of 126 eligible patients, 115 agreed to participate (response rate=91.3%). The age of the participants ranged between 37 and 92 years. Most of the MDADI items showed good variability and only minor floor or ceiling effects in solitary items were found. The internal-consistency reliability (Cronbach's α) of the MDADI total score was 0.88 (after correction for systematic errors in the subjects' responses to two reversed questions). All estimates reached over the satisfactory >0.70 reliability standard for group-level comparison. ICC ranged between 0.83 and 0.97 in the test-retest. The mean MDADI total score was 66.9 (SD=14.7) for the H&N cancer patients, 65.0 (16.9) for the neurologic patients, and 97.5 (4.4) for the control group (P<0.001; study patients vs. controls). The MDADI was also sensitive to disease severity as measured by different food textures. The Swedish version of the MDADI showed good psychometric properties and is a valid instrument to assess dysphagia-related quality of life. It was also shown to be a reliable instrument after correction for systematic errors in the subjects' responses to two reversed questions. Its known-group validity enables the differentiation between dysphagic and nondysphagic patients for group-level research.

Neuromuscular Electrical Stimulation Versus Traditional Therapy in Patients with Parkinson’s Disease and Oropharyngeal Dysphagia: Effects on Quality of Life

This study compares the effects of traditional logopedic dysphagia treatment with those of neuromuscular electrical stimulation (NMES) as adjunct to therapy on the quality of life in patients with Parkinson’s disease and oropharyngeal dysphagia. Eighty-eight patients were randomized over three treatment groups. Traditional logopedic dysphagia treatment and traditional logopedic dysphagia treatment combined with NMES at sensor or motor level stimulation were compared. At three times (pretreatment, post-treatment, and 3 months following treatment), two quality-of-life questionnaires (SWAL-QOL and MD Anderson Dysphagia Inventory) and a single-item Dysphagia Severity Scale were scored. The Functional Oral Intake Scale was used to assess the dietary intake. After therapy, all groups showed significant improvement on the Dysphagia Severity Scale and restricted positive effects on quality of life. Minimal group differences were found. These effects remained unchanged 3 months following treatment. No significant correlations were found between dietary intake and quality of life. Logopedic dysphagia treatment results in a restricted increased quality of life in patients with Parkinson’s disease. In this randomized controlled trial, all groups showed significant therapy effects on the Dysphagia Severity Scale and restricted improvements on the SWAL-QOL and the MDADI. However, only slight nonsignificant differences between groups were found.

An exploratory study of the influence of clinico-demographic variables on swallowing and swallowing-related quality of life in a cohort of oral and oropharyngeal cancer patients treated with primary surgery

There are insufficient data on swallowing and the consequences of its dysfunction in patients with cancers of the oral cavity (OC) and oropharynx (OP) that are treated with primary surgery. The study attempts to explore the effect of important clinico-demographic variables on post-treatment swallowing and related quality of life (QOL) in post-surgical OC and OP cancer patients. Sixty-two consecutive OC and OP cancer patients completed the MD Anderson Dysphagia Inventory (MDADI) questionnaire. Mean scores were computed. Comparison of scores based on mean ranks were performed using Mann-Whitney U test or Kruskal-Wallis test. Level of significance was set at P ≤ 0.02. Adjustments were made for multiple comparisons. Significantly worse mean (SD) QOL scores were observed in late T-stage (T3/T4) versus early T-stage (T1/T2) patients for global domain, physical domain, functional domain and emotional domains [44.4 (21.9) vs. 78.7 (22.7) (P < 0.001); 50.0 (9.4) vs. 75.9 (16.3), (P < 0.0001); 57.8 (20.6) vs. 84.1 (16.7), (P < 0.001) and 55.2 (18.0) vs. 78.5 (16.3), (P < 0.001)], respectively. Patients undergoing reconstruction versus without reconstruction had worse QOL scores; 58.8 (26.9) versus 79.5 (22.8), (P < 0.01); 61.2 (15.1) versus 76.4 (17.5), (P = 0.002); 65.4 (20.5) versus 86.3 (15.9), (P < 0.0001) and 63.3 (18.8) versus 79.8 (16.3), (P < 0.01), respectively, for global, physical, functional and emotional domains. Advanced T-stage, reconstruction, younger age and base of tongue tumours have a negative impact on post-treatment swallow function and related QOL in these patients.

The impact of enteral feeding route on patient-reported long term swallowing outcome after chemoradiation for head and neck cancer

Prospective evidence suggests that the selection of feeding tube during chemoradiation (CRT) indirectly affects swallowing outcome. This study explores the patients' perspective on long-term swallowing ability comparing these two feeding routes. Two groups, receiving nutritional supplementation via a prophylactic gastrostomy tube (group G) and by the oral route or via a nasogastric tube (group NG) during CRT, disease-free at ≥24 months following treatment were matched for age, site and stage of tumour. Patient-reported swallowing outcomes for both groups were assessed using the MD Anderson Dysphagia Inventory (MDADI). Group G consisted of 16 patients and group NG of 15 patients. There was statistically significant difference in MDADI scores between the two groups in all domains of the questionnaire (p<0.001), with superior outcomes in group NG. Use of gastrostomy tubes during CRT conferred a worse swallowing outcome in the long term in this tightly matched cohort of patients.

Functional outcomes and suitability of the temporalis myofascial flap for palatal and maxillary reconstruction after oncologic resection

The temporalis myofascial flap (TMF) is a method of palatal reconstruction that offers a single-stage, reliable, and functional technique to repair oncologic defects involving the oral cavity following tumor removal. It is hypothesized that both speech and swallowing function are preserved following TMF. In a retrospective and prospective case series, this study evaluated the surgical outcomes of 72 patients undergoing surgical resection and reconstruction of the hard and soft palate using a TMF. Of this series, 25 patients underwent nasalence and swallowing quality-of-life testing to determine speech and swallowing function following this procedure. Reliability, safety, and effectiveness data endpoints on TMF reconstruction were collected and analyzed. Instrumental measures of nasalence (KayPentax Nasometer, Lincoln Park, NJ) and swallowing quality of life measures (MD Anderson Dysphagia Inventory [MDADI] were acquired. All TMF's were successfully transferred with complete healing of the oncologic defect. The group mean nasalence for connected speech tasks were within normal limits for connected speech--high- and low-pressure tasks (M = 21% and M = 17%). The group mean nasalence scores for sustained vowels were mildly affected (M = 26%). The group mean MDADI score was 79 (SD = 16), indicating good to mildly affected swallowing quality of life. Neither nasalence nor MDADI scores appeared to vary as a function of defect region. The TMF is an oncologically safe and effective method of palate reconstruction that affords excellent quality of life to appropriately selected patients without reliance on other reconstructive techniques.

The relationship between depressive symptoms and initial quality of life and function in head and neck cancer

To determine the incidence of depression in head and neck cancer (HNCA) patients and the effect of depression on baseline head- and neck-specific measures of quality of life and function. Prospective cohort analysis. A total of 255 patients were prospectively evaluated using the Beck Depression Inventory Fast-Screen (BDI-FS) survey, University of Washington Quality of Life (UW QOL), Voice Handicap Index (VHI), and MD Anderson Dysphagia Inventory (MDADI) questionnaires. Patients with a preexisting diagnosis of depression were excluded. Complete data were available for 77 patients with HNCA and 53 controls. Depressive symptoms were identified in 9% of controls and 19% of HNCA patients, and were significantly associated with a HNCA diagnosis (OR = 4.1, P = .044). Among patients with HNCA, depression was significantly more common in black patients (OR = 15.8, P = .017). A significant negative correlation was found between BDI-FS score and UW global QOL score (r = -0.4, P = .0019). Depression was significantly associated with poorer UW global QOL (β = -22.46, P = .0004), recreation (β = -13.77, P = .037), speech (β = -24.05, P = .004), and MDADI functional (β = -17.31, P = .009), physical (β = -14.99, P = .032), and emotional (β = -11.60, P = .049) domain scores but not with other UW QOL or VHI domains, after controlling for all other variables. Patients with HNCA have a high incidence of depressive symptoms at diagnosis, which is significantly higher in black patients, and is associated with poorer QOL and MDADI scores. Pretreatment depression may serve as a marker for patients with increased risk of swallowing impairment and reduced QOL who would benefit from targeted intervention.

Efficacy survey of swallowing function and quality of life in response to therapeutic intervention following rehabilitation treatment in dysphagic tongue cancer patients

PurposeThis quasi-experimental parallel cluster study was carried out to investigate the utility of interdisciplinary swallowing therapy exercises in improving swallowing function and quality of life (QOL) in dysphagic cancer patients following tongue resection and subsequent rehabilitation treatment. MethodsAll subjects in the experimental group underwent a structured swallowing training program. The subjects in the experimental group (n = 23) received 30 min of swallowing training each day, 6 days per week for 2 weeks. The control group (n = 23) received no training. Analysis of variance was used, and the M.D. Anderson Dysphagia Inventory (MDADI) discriminated between groups of subjects. ResultsPatients who underwent structured swallowing training (n = 23) showed improvement in the overall MDADI score (P < 0.01) compared with the control population. Furthermore, a separate analysis of individual domains of the MDADI (global, emotional, functional, and physical) demonstrated improved QOL. Although the mean score for tongue rehabilitation indicated that ≥50% subjects in the functional subscale were improved compared with the control population, the difference was not statistically significant (P > 0.05). ConclusionsThis study used objectively timed swallowing tests, an interdisciplinary swallowing therapy protocol, and a swallowing questionnaire to evaluate the effects of swallowing training. We found that implementation of swallowing education and exercises improved dysphagia and QOL in cancer patients following tongue resection and rehabilitation. Furthermore, this study indicated that swallowing safety and dysphagia training for nursing professionals is effective.

Voice, swallowing, and quality of life after total laryngectomy—Results of the west of Scotland laryngectomy audit

The purpose of this study was to determine the effects of radiotherapy and surgical voice restoration on functional outcome after total laryngectomy. Questionnaire packs were posted to all 258 laryngectomy patients in the West of Scotland Managed Clinical Network. Packs contained the Voice Symptom Scale (VoiSS), MD Anderson Dysphagia Inventory (MDADI), and University of Washington Quality of Life Questionnaire (UW-QOL). Significantly better VoiSS and MDADI scores were reported by patients undergoing laryngectomy alone in comparison with patients receiving adjuvant radiotherapy and patients undergoing salvage laryngectomy (p < .02). Patients using tracheoesophageal voice reported significantly better VoiSS scores than patients using other communication methods (p < .005). Radiotherapy has a highly significant and detrimental effect on voice and swallowing outcome after total laryngectomy. Surgical voice restoration confers significant benefit in terms of self-reported voice outcome. These findings have implications for patients with advanced laryngeal cancer considering laryngectomy and organ preservation.

Laryngeal function preservation following supracricoid partial laryngectomy

Supracricoid partial laryngectomy is a surgical technique that preserves laryngeal function. A retrospective review of clinical records identified 41 patients that underwent supracricoid partial laryngectomy at our institution since 1998. In all, 26 patients with a minimum follow-up of 3 months were alive with a functioning larynx. All of them accepted participation in a functional evaluation. Ninety-seven percent of the patients were decannulated, and every patient achieved oral intake. The 5-year actuarial laryngoesophageal dysfunction-free survival was 66.5%. Median Voice Handicap Index (VHI) score was 26, with 75% of patients scoring <40. The Median MD Anderson Dysphagia Inventory (MDADI) score was 92, with 75% of patients scoring ≥80. Median maximum phonation time (MPT) was 12 seconds. Median maximum intensity (Imax) was 99 dB. Supracricoid partial laryngectomy allows laryngeal function preservation at a rate similar to that of chemoradiation protocols. When a careful preoperative patient selection is performed, long-term functional results are outstanding. © 2011 Wiley Periodicals, Inc. Head Neck, 2012.

Quality of Life in Oncological Patients with Oropharyngeal Dysphagia: Validity and Reliability of the Dutch Version of the MD Anderson Dysphagia Inventory and the Deglutition Handicap Index

Quality of life is an important outcome measurement in objectifying the current health status or therapy effects in patients with oropharyngeal dysphagia. In this study, the validity and reliability of the Dutch version of the Deglutition Handicap Index (DHI) and the MD Anderson Dysphagia Inventory (MDADI) have been determined for oncological patients with oropharyngeal dysphagia. At Maastricht University Medical Center, 76 consecutive patients were selected and asked to fill in three questionnaires on quality of life related to oropharyngeal dysphagia (the SWAL-QOL, the MDADI, and the DHI) as well as a simple one-item visual analog Dysphagia Severity Scale. None of the quality-of-life questionnaires showed any floor or ceiling effect. The test-retest reliability of the MDADI and the Dysphagia Severity Scale proved to be good. The test-retest reliability of the DHI could not be determined because of insufficient data, but the intraclass correlation coefficients were rather high. The internal consistency proved to be good. However, confirmatory factor analysis could not distinguish the underlying constructs as defined by the subscales per questionnaire. When assessing criterion validity, both the MDADI and the DHI showed satisfactory associations with the SWAL-QOL (reference or gold standard) after having removed the less relevant subscales of the SWAL-QOL. In conclusion, when assessing the validity and reliability of the Dutch version of the DHI or the MDADI, not all psychometric properties have been adequately met. In general, because of difficulties in the interpretation of study results when using questionnaires lacking sufficient psychometric quality, it is recommended that researchers strive to use questionnaires with the most optimal psychometric properties.

Validation of the Sydney Swallow Questionnaire (SSQ) in a cohort of head and neck cancer patients

Impairment of swallowing function is a common multidimensional symptom complex seen in 50-75% of head and neck cancer (HNC) survivors. Although there are a number of validated swallowing-specific questionnaires, much of their focus is on the evaluation of swallowing-related quality of life (QOL) rather than swallowing as a specific function. The aim of this study was to validate the Sydney Swallow Questionnaire (SSQ) as a swallowing-specific instrument in HNC patients. Fifty-four consecutive patients in follow-up for oral and oropharyngeal cancer completed the SSQ and MD Anderson Dysphagia Inventory (MDADI). Thirty-one patients completed both questionnaires again four weeks later to address test-retest reliability. Internal consistency and test-retest reliability was assessed using Cronbach's alpha and Spearman's correlation coefficient, respectively. Construct validity (including group validity) and criterion validity were determined using Spearman's correlation coefficient and Mann-Whitney U-test. Internal consistency, test-retest reliability, construct validity, group validity and criterion validity of the SSQ was found to be significant (P<0.01). We were able to demonstrate the reliability and validity of the SSQ in HNC patients. The SSQ is a precise, reliable and valid tool for assessing swallow in this patient group.

Correlation between dose to the pharyngeal constrictors and patient quality of life and late dysphagia following chemo-IMRT for head and neck cancer

Purpose Aim of this study was to correlate dose to pharyngeal constrictors (PC) with subjective and observer-based assessments of swallowing in patients with head and neck cancer undergoing concomitant chemo-IMRT. Materials and methods Dose–volume histograms (DVHs) for superior constrictor (SC), middle constrictor (MC) and inferior constrictor (IC) were generated for 37 patients. Mean doses to SC, MC and IC were correlated to objective dysphagia grade (1 year, RTOG scoring) and global, total physical (TP) and most relevant components of the physical section (P6, P8) of the MD Anderson dysphagia inventory (MDADI) which was evaluated post-treatment. Odds ratios of dysphagia (>grade 0), poor global (<3), TP (<32), P6 (<3) and P8 (<3) for patients with mean dose > 60 Gy to SC and IC were calculated. Results There was no significant correlation between mean dose to PC and any of the analysed MDADI parameters and observer-assessed dysphagia grade. Odds ratio of dysphagia (>grade 0), poor global (<3), TP (<32), P6 (<3) and P8 (<3) for patients with mean dose > 60 Gy to IC and SC were not significantly higher than those for patients receiving <60 Gy. Conclusion This study did not find a statistically significant correlation between radiation dose to the PC and observer-assessed dysphagia grade or patient-reported MDADI questionnaire at 1 year.

Functional outcomes after transoral robotic surgery for head and neck cancer

Objective To evaluate functional outcomes following transoral robotic surgery for head and neck cancer. Study Design Case series with planned data collection. Setting Academic hospital. Subjects and Methods Between March 2007 and December 2008, 54 of 62 candidate patients underwent transoral robotic tumor resection. Outcomes include airway management, swallowing (MD Anderson Dysphagia Inventory), and enterogastric feeding. Results Tumors were most commonly oropharynx (61%) or larynx (22%) and T1 (35%) or T2 (44%). Many received radiotherapy (22% preoperatively, 41% postoperatively) and chemotherapy (31%). Endotracheal intubation was retained (22%) for up to 48 hours, tracheostomy less frequently (9%), and all were decannulated by 14 days. Most commenced oral intake prior to discharge (69%) or within two weeks (83%). A worse postoperative Dysphagia Inventory score was associated with retained feeding tube ( P = 0.020), age >60 ( P = 0.017), higher T stage ( P = 0.009), laryngeal site ( P = 0.017), and complications ( P = 0.035). At a mean 12 months' follow-up, 17 percent retained a feeding tube (9.5% among primary cases). Retained feeding tube was associated with preoperative tube requirement ( P = 0.017), higher T stage ( P = 0.043), oropharyngeal/laryngeal site ( P = 0.034), and recurrent/second primary tumor ( P = 0.008). Complications including airway edema (9%), aspiration (6%), bleeding (6%), and salivary fistula (2%) were managed without major sequelae. Conclusion Transoral robotic surgery provides an emerging alternative for selected primary and salvage head and neck tumors with low morbidity and acceptable functional outcomes. Patients with advanced T stage, laryngeal or oropharyngeal site, and preoperative enterogastric feeding may be at increased risk of enterogastric feeding and poor swallowing outcomes.

Dysphagia After Chemoradiotherapy for Head-and-Neck Squamous Cell Carcinoma: Dose–Effect Relationships for the Swallowing Structures

To evaluate late dysphagia after chemoradiotherapy for locally advanced head-and-neck squamous cell carcinoma, and to examine its correlation with clinical and dosimetric parameters. Consecutive patients, treated with radiotherapy (70-72 Gy) and concomitant chemotherapy (cisplatinum 100 mg/m(2) every 3 weeks) between 2004 and 2007, were examined. Swallowing was evaluated by four quality-of-life questionnaires: EORTC C30 and H&N35, the Performance Status Scale of List, and the MD Anderson Dysphagia Inventory. Clinical and dosimetric parameters were correlated with late dysphagia. A total of 53 disease-free patients were evaluated; mean follow-up was 20.4 months (range, 6-45 months). The volume of the middle pharyngeal constrictor muscle receiving > or =50 Gy (p = 0.04), the mean dose to this structure (p = 0.02) and to the supraglottic larynx (p = 0.04) were significantly associated with late swallowing problems at univariate analysis, along with tumor localization (p = 0.008), T-classification (p = 0.02), and pretreatment swallowing problems (p = 0.01). Only this last factor significantly correlated with late dysphagia at multivariate analysis. These findings motivate further efforts to reduce the dose to the swallowing structures, especially to the pharyngeal constrictor muscles and the larynx. However, clinical parameters are also important and should be included in future prospective trials.

The effect of electrical stimulation therapy on dysphagia following treatment for head and neck cancer

The purpose of this study was to evaluate the effect of neuromuscular electrical stimulation (NMES) in patients suffering from dysphagia following treatment for head and neck cancer. In a prospective, double blinded, randomized case control study between January 2006 and December 2007, 14 patients were randomized to 30min of NMES and 30min of traditional swallowing training for 5 days per week for 2 weeks (experimental group), and 12 patients were randomized to sham stimulation plus traditional swallowing training (control group). Effects were assessed using the clinical dysphagia scale (CDS), the functional dysphagia scale (FDS), the American speech-language-hearing association national outcome measurement system (ASHA NOMS) and the M.D. Anderson dysphagia inventory (MADI). Pretreatment evaluation showed no significant differences between the two groups for all parameters. Average changes of FDS score were 11.4+/-8.1 for the experimental group and 3.3+/-14.0 for the control group (P=0.039). CDS, ASHA NOMS and MADI showed some difference with treatment, but the changes were not significant (P>0.05). NMES combined with traditional swallowing training is superior to traditional swallowing training alone in patients suffering from dysphagia following treatment for head and neck cancer.

Dosimetric Predictors of Long-term Dysphagia Following Oropharyngeal IMRT

Recent studies have focused on identification of vulnerable bystander anatomy associated with acute dysphagia following head and neck intensity modulated radiotherapy (IMRT). No data are currently available for chronic swallowing outcomes (≥6 months post-treatment). We investigated the impact of specific regional doses delivered by IMRT on long-term swallowing function in oropharyngeal cancer patients prospectively evaluated with serial modified barium swallow (MBS) studies and the M.D. Anderson Dysphagia Inventory (MDADI) up to two years. Forty-eight patients with stage IV head and neck squamous cell carcinoma were enrolled on an institutional trial examining induction chemotherapy followed by IMRT +/− chemotherapy. We studied a subgroup of 31 oropharyngeal cancer patients who were evaluated with MBS and MDADI at baseline, 6, 12, and 24 months after radiation. Oropharyngeal swallow efficiency (OPSE) was defined as the ratio of the percent swallowed into the esophagus divided by oropharyngeal transit time. Potential dysphagia-associated structures, including oral cavity, pharyngeal constrictors, larynx, tongue base, and salivary glands were retrospectively contoured. These structures were not assigned specific cost functions for IMRT planning. Twenty-one (68%) patients had disease of the base of tongue, and 10 (32%) had tonsillar disease. T stage distribution was T1 (12), T2 (10), T3 (4), T4 (2), and TX (3); N stage distribution was N2 (24), N3 (5), and NX (2). Median age was 52.8 years (range: 42-78). Thirteen patients (42%) received concurrent chemotherapy during radiation. Long-term OPSE was most closely associated with oral cavity dose (V30Gy, V50Gy) and baseline OPSE scores (p < 0.001) using a random-effects linear regression model to evaluate changes in OPSE at 6-, 12-, and 24-months from scores obtained at baseline. Mean doses to pharyngeal constrictors, tongue base, and larynx were also associated with worse long-term OSPE (p < 0.04). Patients with base of tongue cancer had better OPSE than patients with tonsillar cancer (p = 0.01). Mean MDADI scores were lower than baseline at 6 months post-IMRT, but improved by 12 months (p = 0.04). Only mean doses to the ipsilateral parotid were significantly associated with MDADI scores (p = 0.04). No patient demonstrated aspiration per MBS study at 24 months. This is the first investigation to associate long-term swallowing outcomes with detailed doses to normal anatomy in patients with oropharyngeal cancer treated with IMRT. Although pharyngeal and laryngeal doses were important, oral cavity doses were most closely associated with long-term dysphagia in this cohort. The relationship between perceptual and instrumental measures of dysphagia in patients treated with different cancer regimens needs to be clarified.