Current status of cricopharyngeal myotomy for cervical esophageal dysphagia

Objective.

We have reviewed our experience with cricopharyngeal myotomy for a variety of conditions causing cervical esophageal dysphagia to clarify its indications and results as well as to determine what, if any, ancillary procedures are indicated.

Methods.

Eighty-three patients underwent cricopharyngeal myotomy between January 1970 and January 1995, 54 of whom had a pharyngoesophageal diverticulum. The remainder suffered from a variety of motor disorders of the upper esophageal sphincter. Clinical follow-up evaluation was obtained in 71 of the 83 patients (86%).

Results.

Good or excellent results were obtained in 87% of the patients with pharyngoesophageal diverticula, 100% after myotomy plus diverticulectomy, 87% after myotomy plus diverticulopexy and 67% after myotomy alone. Of patients with hypertensive upper esophageal sphincter, 100% had good or excellent results, whereas only 60% with non-specific esophageal motor disorders were so evaluated. None of the patients with bulbar palsy or miscellaneous conditions had good or excellent results.

Conclusions.

We recommend cricopharyngeal myotomy for all patients with a pharyngoesophageal diverticulum coupled with diverticulopexy for the majority, reserving diverticulectomy for those with recurrent pouches or extremely large pouches (6–8 cm in diameter). Good or excellent results can be expected after myotomy in patients with a hypertensive upper esophageal sphincter. Myotomy is rarely indicated for patients with dysphagia secondary to bulbar palsy. The role of cricopharyngeal myotomy for patients with non-specific esophageal motor disorders remains controversial.     

Sleeve recording of upper esophageal sphincter resting pressures during cricopharyngeal myotomy.

OBJECTIVE: The manometric effects of a 6-cm cricopharyngeal myotomy are recorded while the operation is being performed from cervical esophagus to the cricopharyngeus and then to the hypopharynx. SUMMARY BACKGROUND DATA: Cricopharyngeal myotomy is used in the treatment of oropharyngeal dysphagia of different causes. The operation decreases the resting pressure in the upper esophageal sphincter (UES). The components responsible for this decrease have not been clarified. METHODS: Fourteen patients with oropharyngeal dysphagia underwent a sleeve recording of the UES resting pressures under general anesthesia before and after sequential myotomy of the pharyngoesophageal junction. Patients were assessed in the awake state before and after the whole myotomy. RESULTS: Upper esophageal pressures remain unchanged after division of 2 cm of the cervical esophageal muscle. Section of 2 cm of the cricopharyngeal area results in a significant decrease of the sphincter resting pressure (p < 0.01). The division of 2 cm of hypopharyngeal muscle results in a further significant reduction of the resting pressure (p < 0.005). CONCLUSIONS: Extension of the cricopharyngeal myotomy over hypopharyngeal musculature produces a more significant decrease of UES resting pressure.     

Management of cricopharyngeal dysphagia with and without Zenker's diverticulum

Cricopharyngeal dysphagia and Zenker 's diverticulum result from cricopharyngeal dysfunction, a failure of the upper esophageal sphincter to relax at the initiation of swallowing. The focus of surgical management involves a cricopharyngeal myotomy that is performed by either an open or an endoscopic approach. The endoscopic approach offers faster operating times, a shorter hospital stay, earlier time to oral intake, and lower complication rates, but a role for open cricopharyngeal myotomy remains.     

Pharyngoesophageal dysfunctions. The role of cricopharyngeal myotomy

Eighteen patients were evaluated for primary symptoms of cervical dysphagia and/or laryngeal aspiration and subsequently had a cricopharyngeal myotomy. Twelve patients had a neurologic lesion as the cause of the symptoms. Four patients had a Zenker's diverticulum as demonstrated by barium contrast roentgenograms. Two patients complained of persistent suprasternal dysphagia following one or more antireflux repairs for gastroesophageal reflux disease. Esophageal manometry identified a pharyngoesophageal motor disorder in all but four patients, two of the four with Zenker's diverticulum and the two who had an antireflux procedure. The results show that cricopharyngeal myotomy should be reserved for patients with an identifiable motor disorder confined to the pharyngeal phase of swallowing, ie, failure of the pharyngeal pump or cricopharyngeal incoordination and/or incomplete relaxation. Exceptions to this rule are as follows: Zenker's diverticulum, in which an abnormality may not always be detected but of which the results of surgery demonstrate the effectiveness of this procedure; and pharyngoesophageal complaints associated with reflux, most of which resolve with the restoration of distal esophageal sphincter competence. In those few patients in whom these conditions persist, a cricopharyngeal myotomy may be beneficial. Caution should be used in applying the procedure to individuals who have had multiple antireflux repairs.     

Manometric and radionuclide assessment of pharyngeal emptying before and after cricopharyngeal myotomy in patients with oculopharyngeal muscular dystrophy

Fifteen patients with oculopharyngeal muscular dystrophy underwent cricopharyngeal myotomy for palliation of dysphagia. The aim of this work was to assess the effectiveness of this operation by using a radionuclide pharyngeal emptying study as a new quantitative method in addition to clinical and manometric evaluation. Radionuclide study was performed with the patient in both the upright and the supine positions after ingestion of 15 ml of water labeled with sulfur colloid 99mTc. Computerized data were acquired at 0.5 second intervals for 15 minutes and a pharyngeal time-activity curve was generated. Four quantitative parameters were evaluated: the time for pharyngeal clearance of 25%, 50%, and 75% of the ingested radioactive water and the pharyngeal stasis at 15 minutes. Manometric studies were also performed before and after cricopharyngeal myotomy. The pharyngeal clearance of 25%, 50%, and 75% of the water and pharyngeal stasis at 15 minutes were all improved by cricopharyngeal myotomy, decreasing from 1.2 to 0.9 second (p less than 0.04), 4.2 to 2 seconds (p less than 0.005), 15 to 7 seconds (p less than 0.02), and 10.3% to 6% (p less than 0.01), respectively. Both pharyngoesophageal and tracheobronchial symptoms were also significantly improved by cricopharyngeal myotomy. Manometric evaluation showed a decrease of the upper esophageal sphincter closing pressure from 60.1 mm Hg before to 28.2 mm Hg after the operation (p less than 0.001), and the resting pressure decreased from 34.4 to 15.7 mm Hg (p less than 0.0005). Cricopharyngeal myotomy significantly improves both symptoms and pharyngeal emptying in patients with oculopharyngeal muscular dystrophy.     

Physiologic response to cricopharyngeal myotomy and diverticulum suspension

Ten patients who had a cricopharyngeal myotomy and diverticulum suspension for pharyngoesophageal diverticulum have been studied clinically, radiologically, and manometrically. There were no deaths or morbidity and all patients have achieved marked improvement of their symptoms. Before operation all patients but one had low resting tone in the upper esophageal sphincter and all patients had normal relaxation of the sphincter upon swallowing. The coordination of pharyngeal contraction and sphincter relaxation was normal in six patients and abnormal in four patients. After operations the only change was an increase in resting tone in seven patients, and there was no change in three patients. We conclude that cricopharyngeal myotomy and diverticulum suspension constitute an effective form of treatment for pharyngoesophageal diverticulum.     

Analysis of voice function following autologous fat injection for vocal fold paralysis.

OBJECTIVE: This study demonstrates that intravocal fold injection of autologous fat obtained by liposuction technique is simple, and the functional results durable for patients with unilateral vocal fold paralysis due to injury to the recurrent laryngeal nerve. STUDY DESIGN: 41 patients with unilateral paralysis of the vocal fold due to injury to the recurrent laryngeal nerve received intravocal fold injection of autologous fat. Autologous fat, harvested from the lower abdomen by liposuction technique, was filtered out and injected through a needle into the vocal fold by using endolaryngeal microsurgery. Clinical follow-up after the injection was carried out from 1 month to 2 years. RESULTS: Voice function dramatically improved compared with the parameters examined before the operation. Vocal function continued to improve as time passed during the second year after injection. CONCLUSIONS: Intravocal fold injection of autologous fat obtained by liposuction technique is simple, and the functional results durable for patients with unilateral vocal fold paralysis due to injury to the recurrent laryngeal nerve. SIGNIFICANCE: The effectiveness continued for more than 2 years in most patients.     

Cervical esophageal dysphagia: indications for and results of cricopharyngeal myotomy

Twenty patients with cervical esophageal dysphagia were treated by cricopharyngeal myotomy. Of these 20 patients, ten had pharyngoesophageal diverticula, four had a hypertensive upper esophageal sphincter (UES), four had bulbar palsy, and two has miscellaneous forms of cricopharyngeal dysfunction. Preoperative esophageal manometric examination revealed mean UES pressures of 37.2 mmHg +/- 4.8 SEM in patients with diverticula-markedly lower (p = 0.01) than in normal patients (55.9 mmHg +/- 5.0 SEM). In patients with hypertensive UES the mean pressure was 166.2 mmHg +/- 13.4, significantly higher (p less than 0.001) than normal. Incoordination of the deglutitive response of the UES characterised by premature relaxation and contraction was present in all patients with diverticula and in one other patient. Another patient exhibited incomplete sphincteric relaxation (achalasia). A 4-5 cm myotomy of the cricopharyngeus muscle and adjacent esophageal muscle was performed in all patients. On the patients with diverticula two also had diverticulectomy. No patient with bulbar palsy was benefited. All other patients were relieved of dysphagia by the operation, with the exception of one patient with a diverticulum. A subsequent diverticulectomy was required in this patient. Postoperative manometric examination revealed an average decrease in UES pressure of 63% and an average decreased in length of the high pressure zone of 1.4 cm.     

Primary neonatal cricopharyngeal achalasia: a case report and review of the literature.

Primary cricopharyngeal achalasia is a rare cause of dysphagia in the pediatric population. In a review of the literature, only 11 well-documented cases were discovered. We report the case of a newborn with cricopharyngeal achalasia who was successfully treated with a myotomy of the upper esophageal sphincter. A review of the literature is presented and treatment options are discussed.     

Videofluoroscopy in motor neurone disease prior to cricopharyngeal myotomy.

Cricopharyngeal myotomy is a recognised treatment for the dysphagia in motor neurone disease, although the results are sometimes disappointing. In this study, 27 patients with motor neurone disease causing significant dysphagia have been investigated by the technique of videofluoroscopy, in order to determine the nature of their swallowing disability; those patients found suitable have been offered cricopharyngeal myotomy. Of the 27 patients, only seven were found to have cricopharyngeal dysfunction as the predominant disability and, of these, six underwent myotomy, resulting in relief of dysphagia in five, three of whom returned to a near normal diet. Previous studies showed poor overall benefit from cricopharyngeal myotomy. Videofluoroscopy allows accurate patient selection, and a much improved outcome in the selected group.     

Vocal fold injection of collagen for unilateral vocal fold paralysis caused by chest diseases.

BACKGROUND: Patients having malignant chest diseases sometimes suffer from vocal fold paralysis. Treatment for vocal fold paralysis is important for such patients, because vocal fold paralysis causes lack of the versatility of the human voice which is essential for our communication. METHODS: Seventeen patients suffering from unilateral vocal fold paralysis were treated with vocal fold injections of collagen. Three patients received twice, and 20 treatments were conducted. A flexible bronchofiberscope was used under local anesthesia in order to observe the whole procedure of vocal fold injection. Using an injector and a long needle, collagen was injected with transcutaneous technique mainly through the cricothyroid membrane. The amount of collagen was determined with bronchoscopic findings. RESULTS: During and after treatment, no complication was observed. Of 20 treatments, a marked improvement was observed in 8, and moderate improvement was observed in 9 treatments. CONCLUSIONS: Vocal fold injection of collagen is a very useful and safe treatment for unilateral vocal fold paralysis caused by chest diseases.     

Surgical indications in cricopharyngeal dysfunction]

In 1989, five patients were treated for a cricopharyngeal dysfunction by cervical myotomy. In the past, due to extremely limited indications for surgery, repeated efforts of conservative treatment had been attempted in patients with idiopathic cricopharyngeal dysfunction and tracheopulmonary aspiration and/or permanent inability of oral nourishment. These patients underwent surgery after an interdisciplinary clinical assessment. Four out of five patients showed immediate improvement of their serious symptoms. Cervical myotomy is not expected to be successful in patients with insufficient oropharyngeal propulsion, as we could see in one female patient with severe upper oesophageal sphincter spasm. According to the literature and to our results, approximately 70 to 90% of the patients with idiopathic dysfunction of the cricopharyngeal muscle, who underwent surgery, showed significant improvement or even recovery. Due to the multifactoral genesis of the cricopharyngeal dysfunction it is understandable, that the surgical result is heavily dependent on the preoperative interdisciplinary diagnosis. In summary, for idiopathic cricopharyngeal dysfunction with complications we recommend the early and technically simple operation.     

Long-term results of cricopharyngeal myotomy in oculopharyngeal muscular dystrophy.

OBJECTIVE: To analyze long-term results of extramucosal cricopharyngeal myotomy in oculopharyngeal muscular dystrophy. STUDY DESIGN: The preoperative and postoperative evaluations including symptoms, type of feeding, weight, and functional examinations were retrospectively evaluated in 39 patients. Results were defined postoperatively as successful, partial, or failed. SETTING: University hospital. RESULTS: In the short term, 25 patients showed a complete remission of symptoms, 10 showed a marked improvement, and 4 exhibited no improvement at all (success rate of 90%). Long-term evaluation during a mean follow-up of 4 years showed that of the 35 improved patients, 12 exhibited a recurrence of dysphagia (mean time of 39 months). In 3 of these 12 patients, a revision transmucosal endoscopic cricopharyngeal myotomy was performed with a successful outcome in 2. Of the 4 patients who initially showed no improvement, 1 was improved by transmucosal myotomy. CONCLUSION: Extramucosal cricopharyngeal myotomy improves dysphagia in oculopharyngeal muscular dystrophy patients during the first few years but one third of the patients exhibited a recurrence of symptoms within 3 years. Revision by transmucosal endoscopic myotomy may be performed. EBM rating: C-4.     

Cricopharyngeal myotomy for primary cricopharyngeal dysfunction caused by a structural abnormality localized in the cricopharyngeus muscle: Report of a case

Primary cricopharyngeal dysfunction (PCD) is a rare idiopathic disorder of the upper esophageal sphincter (UES), characterized by oropharyngeal dysphagia, frequent aspiration, and narrowing at the level of the UES. Cricopharyngeal myotomy (CPM) has been used to treat oropharyngeal dysphagia of different causes including anatomic, neuromuscular, iatrogenic, inflammatory, neoplastic, and idiopathic; however, the indications for CPM and predictors of its outcome are not clearly defined. We report a case of PCD with hypertonic UES caused by a structural abnormality localized in the cricopharyngeus muscle, visualized as a cricopharyngeal bar, which we treated successfully by CPM, achieving long-term relief.     

Primary cricopharyngeal achalasia in infancy--myotomy treatment of choice

Dysphagia secondary to primary cricopharyngeal achalasia (PCA) is infrequently seen in paediatric patients. Two female children with PCA who had recurrent attacks of aspiration pneumonia are presented. A cricopharyngeal myotomy was successfully performed in both cases, confirming its efficacy. Investigation and management of this rare condition are reviewed.     

Recurrent Laryngeal Nerve Palsy after Anterior Cervical Spine Surgery: The Impact of Endotracheal Tube Cuff Deflation, Reinflation, and Pressure Adjustment

Background: Vocal fold immobility (paresis or paralysis) from recurrent laryngeal nerve injury remains an important cause of morbidity after anterior cervical spine surgery. A maneuver involving endotracheal tube (ETT) cuff manipulation has been proposed to reduce its incidence. This study is a randomized, prospective, double-blind investigation to test the hypothesis that ETT cuff manipulation reduces the incidence of postoperative vocal fold immobility after anterior cervical spine surgery.

Methods: One hundred patients scheduled to undergo anterior cervical spine surgery were randomly assigned to one of two groups. After inducing general endotracheal anesthesia, patients in the intervention group had their ETT cuff pressures maintained at 20 mmHg or less. After placement of self-retaining retractors, the ETT cuff was deflated for 5 s and then reinflated. Patients in the control group had no further manipulation of their ETT once the cuff was inflated after intubation. Cuff pressures in both groups were recorded before skin incision (baseline) and after placement of self-retaining retractors (peak). Patients' vocal fold motion was evaluated by indirect laryngoscopy performed preoperatively and postoperatively. The examination was videotaped and reviewed by a blinded otolaryngologist. Postoperative vocal fold motion was graded as normal, paretic, or paralyzed.

Results: Complete data were available in 94 patients. The incidence of vocal fold paralysis was 3.2% (95% confidence interval, 0.7-9.4%). Cuff manipulation decreased ETT cuff pressure but did not reduce the incidence of vocal fold immobility (15.4% vs. 14.5%).     

Vocal cord paralysis after surgery to the descending thoracic aorta via left posterolateral thoracotomy

Vocal cord paralysis is one of the frequently encountered complications after aortic surgery. However, reports of vocal cord paralysis after aortic surgery have been limited. In a retrospective cohort study of vocal cord paralysis after aortic surgery at a general hospital, we sought factors related to its development after aortic surgery to the descending thoracic aorta via left posterolateral thoracotomy. We reviewed data for a total of 69 patients who, between 1989 and 1995, underwent aortic surgery to the descending thoracic aorta. We assessed factors associated with the development of vocal cord paralysis and postoperative complications. Postoperative vocal cord paralysis appeared in 19 patients. Multiple logistic regression analysis revealed two risk factors for vocal cord paralysis: chronic dilatation of the aorta at the left subclavian artery (odds ratio = 8.67) and anastomosis proximal to the left subclavian artery (odds ratio = 17.7). The duration of mechanical ventilation was significantly prolonged for patients with vocal cord paralysis. Certain surgical factors associated with left subclavian artery increase the risk of vocal cord paralysis after surgery on the descending thoracic aorta. Vocal cord paralysis after aortic surgery did not increase aspiration pneumonia but was associated with pulmonary complications.     

Esophageal web associated with Zenker's diverticulum: a possible cause of continuing dysphagia after diverticulectomy

A 67-year-old man with upper esophageal dysphagia thought to be caused by a large Zenker's diverticulum was found to have esophageal web at the time of diverticulectomy and cricopharyngeal myotomy. The web was divided by sharp dissection. Untreated, this thin web would almost certainly have resulted in dysphagia postoperatively. The authors therefore recommend routine open diverticulectomy for the management of Zenker's diverticulum, to allow inspection of the esophageal lumen for concomitant disease and palpation of the cricopharyngeal muscle at the time of myotomy.     

Surgery in oculopharyngeal muscular dystrophy

Oculopharyngeal muscular dystrophy is an autosomal dominant inherited condition seen mainly in patients of French Canadian origin. Fifteen patients with an established diagnosis of the disease were evaluated clinically, manometrically and radiologically before and after cricopharyngeal myotomy. All patients presented with oropharyngeal dysphagia to solids and liquids, pharyngooral and pharyngonasal regurgitation, frequent aspiration at mealtime and chronic aspiration of saliva during the night. When compared with a control group, significant differences were observed in the pressure, duration and frequency of pharyngeal contraction. Cricopharyngeal myotomy did not alter pharyngeal function. At the level of the upper esophageal sphincter, resting and contraction pressure relaxation, relaxation time and coordination were examined. Relaxation time was the only significant abnormality observed between patients with oculopharyngeal muscular dystrophy and control subjects. Surgery significantly lowered the resting and contracting pressures of the sphincter. Relaxation time was brought toward normal. All patients' symptoms were significantly improved by cricopharyngeal myotomy.     

Recurrent laryngeal nerve paralysis in patients with papillary thyroid carcinomas: evaluation and management of resulting vocal dysfunction

BACKGROUND: Recurrent laryngeal nerve paralysis (RLNP) occurs in patients with thyroid malignancy. This study prospectively evaluated vocal function and management outcomes of patients with papillary thyroid carcinomas (PTCs) and RLNP. METHODS: Of 319 PTC patients, 256 underwent total thyroidectomy with or without neck dissection, 42 underwent lobectomy, and 21 underwent reoperation for recurrent cancers. All patients underwent laryngoscopy and vocal function measurements before and after surgery. Patients with RLNP and poor vocal function underwent voice surgery. RESULTS: Temporary and permanent RLNP rates were 2.8% and .9% at nerve-at-risk-based analysis, respectively. Of 28 patients with tumor invasion of RLN, 14 had preoperative RLNP, with 9 of 14 showing voice changes. RLNP was detected in 9 of 291 (3.1%) patients without documented nerve injury; 8 recovered. Nine of 15 patients with RLN section had poor vocal function, which improved in 8 patients after medialization of the unilateral vocal fold. CONCLUSIONS: Patients with PTC may have vocal dysfunction from cancer or surgery-related RLNP. Vocal evaluation and management may help improve their vocal function, thus enhancing their quality of life.