Oropharyngeal Dysphagia after anterior cervical spine surgery: a review

Impact of Postoperative Dysphagia on Health Care Resource Utilization Following Single-Level Cervical Disc Arthroplasty

Study DesignRetrospective cohort study.ObjectivesThis study seeks to highlight differences in 1) postoperative complications, 2) recovery course, and 3) associated costs between patients with and without postoperative dysphagia who underwent single-level CDA.MethodsThe National Inpatient Sample (NIS) was queried to identify patients who underwent single-level CDA between 2016 and 2020. Patients were divided into dysphagia and control groups based on the presence or absence of postoperative dysphagia. Propensity score-matching (1:5) was performed, accounting for age, sex, race, and comorbidities. Primary outcomes included length of stay (LOS), hospital costs, and discharge disposition. Chi-square and t-tests were used for statistical comparisons. Significance was set at the P < .05 level.ResultsThe final analysis included 640 patients in the dysphagia group and 3,200 controls after matching. Patients in the dysphagia group experienced a significantly higher rate of perioperative complications (7.8% vs 2.8%; P = .006). The mean LOS was longer for the dysphagia group (2.9 ± .3 days vs 1.5 ± .1 days; P < .001), and hospitalization costs were significantly higher ($27,100 vs $21,700; P < .001). Additionally, dysphagia patients were more likely to have a non-routine discharge (15.6% vs 9.2%; P = .030).ConclusionsPostoperative dysphagia following CDA significantly escalates healthcare resource utilization, leading to prolonged hospital stays, increased costs, and a greater risk of non-routine discharge. This underscores the need for targeted interventions to reduce the incidence of dysphagia and improve recovery outcomes, ultimately enhancing patient care and reducing the financial burden on healthcare systems.

Comparison of Clinical Outcomes Between Anterior Cervical Discectomy and Fusion and Cervical Disc Replacement for Predominant Neck Pain

Study DesignRetrospective cohort study.ObjectivesSevere neck pain has traditionally been considered a relative contraindication for cervical disc replacement (CDR) due to risk of persistent neck pain from the remaining mobile segment. However, recent studies suggest potential for neck pain improvement with CDR. This study aimed to compare postoperative improvements in neck pain and disability between patients undergoing anterior cervical discectomy and fusion (ACDF) and CDR.MethodsPredominant neck pain was defined as neck pain equal to or greater than arm pain preoperatively (visual analog scale [VAS]) and neck disability index (NDI) > 20. Patients with predominant neck pain who underwent 1- or 2-level ACDF or CDR for radiculopathy between 2017 and 2023 were included. Patient-reported outcomes (NDI, VAS) were assessed up to 1 year postoperatively. Inverse probability of treatment weighting (IPTW) was used to control for confounders. Linear mixed-effect models were applied to compare postoperative outcomes.ResultsA total of 179 patients (105 ACDF, 74 CDR) were included. Both groups showed significant improvement in NDI and VAS neck scores from baseline to 1 year (NDI: β = -1.81, P < .001; VAS neck: β = -.26, P < .001). After IPTW, no significant differences were found between ACDF and CDR across all PROMs up to 1 year (NDI: β = -0.44, P = .09; VAS neck: β = -.07, P = .10).ConclusionCDR was associated with postoperative improvements in neck pain and disability comparable to those observed with ACDF in patients with predominant neck pain and radiculopathy. These findings suggest that CDR may be a reasonable treatment option for selected patients.

Table-mounted Versus Self-retaining Retraction: An Assessment of Postoperative Dysphagia Following Anterior Cervical Spine Surgery

STUDY DESIGN

Retrospective study.

OBJECTIVE

To determine whether there are significant differences in postoperative dysphagia when using table-mounted versus self-retaining retractor tools.

SUMMARY OF BACKGROUND DATA

Retraction of prevertebral structures during anterior cervical spine surgery (ACSS) is commonly associated with postoperative dysphagia or dysphonia. Retractors commonly used include nonfixed self-retaining retraction devices or fixed table-mounted retractor arms. However, there is a paucity of literature regarding differences in dysphagia between retractor types.

METHODS

Patients who underwent ACSS and adhered to a minimum of 6-month follow-up were retrospectively evaluated. Patient-reported outcomes (PROs) were compared between table-mounted and self-retaining retractor groups at the preoperative and final postoperative time points, including the SWAL-QOL survey for dysphagia. Categorical dysphagia was assessed using previously defined values for the minimum clinically important difference (MCID).

RESULTS

Overall, 117 and 75 patients received self-retaining or table-mounted retraction. Average follow-up was significantly longer in the self-retaining cohort (14.8±15.0 mo) than in the table-mounted group (9.4±7.8, P =0.005). No differences were detected in swallowing function ( P =0.918) or operative time ( P =0.436), although 3-level procedures were significantly shortened with table-mounted retraction ( P =0.005). Multivariate analysis trended toward worse swallow function with increased operative levels ( P =0.072) and increased retraction time ( P =0.054), although the retractor used did not predict swallowing function ( P =0.759). However, categorical rates of postoperative dysphagia were lower with table-mounted retraction (13.3% vs. 27.4%, P =0.033).

CONCLUSIONS

There was no significant difference observed in long-term swallowing dysfunction between patients who underwent ACSS with self-retaining and table-mounted retractors, although the rate of dysphagia was lower with table-mounted retraction. In addition, the greater number of operated levels per case in the table-mounted group at a similar time suggests improved efficiency.

The Impact of Peri-operative Enhanced Recovery After Surgery Protocols on Outcomes Following Adult Cervical Deformity Surgery

Study DesignRetrospective cohort study.ObjectivesTo assess the impact of Enhanced recovery after surgery (ERAS) protocols on peri-operative course in adult cervical deformity (ACD) corrective surgery.MethodsPatients ≥18 yrs with complete pre-(BL) and up to 2-year (2Y) radiographic and clinical outcome data were stratified by enrollment in an ERAS protocol that commenced in 2020. Differences in demographics, clinical outcomes, radiographic alignment targets, peri-operative factors and complication rates were assessed via means comparison analysis. Logistic regression analysed differences while controlling for baseline disability and deformity.ResultsWe included 220 patients (average age 58.1 ± 11.9 years, 48% female). 20% were treated using the ERAS protocol (ERAS+). Disability was similar between both groups at baseline. When controlling for baseline disability and myelopathy, ERAS- patients were more likely to utilize opioids than ERAS+ (OR 1.79, 95% CI: 1.45-2.50, P = .016). Peri-operatively, ERAS+ had significantly lower operative time (P < .021), lower EBL (583.48 vs 246.51, P < .001), and required significantly lower doses of propofol intra-operatively than ERAS- patients (P = .020). ERAS+ patients also reported lower mean LOS overall (4.33 vs 5.84, P = .393), and were more likely to be discharged directly to home (χ2(1) = 4.974, P = .028). ERAS+ patients were less likely to require steroids after surgery (P = .045), were less likely to develop neuromuscular complications overall (P = .025), and less likely experience venous complications or be diagnosed with venous disease post-operatively (P = .025).ConclusionsEnhanced recovery after surgery programs in ACD surgery demonstrate significant benefit in terms of peri-operative outcomes for patients.

Postoperative complications of anterior cervical discectomy and fusion: A comprehensive systematic review and meta-analysis

Background

Anterior cervical discectomy and fusion (ACDF) is one of the most frequently performed spine procedures for different indications in the cervical spine. Various postoperative complications have been reported following the ACDF. This systematic review and meta-analysis aimed to calculate the incidence rate of different postoperative complications associated with ACDF surgery and also identify underlying risk factors for each complication.

Methods

A systematic review of the literature was performed in PubMed/MEDLINE, Embase, and the Cochrane Library for observational studies published between January 1996 and March 2023 and reporting postoperative complications associated with ACDF. Randomized controlled trials and interventional investigations were not included in this study. Meta-regression was also performed using generalized linear mixed models with a binomial probability distribution on various potential predicting factors.

Results

A total of 222 studies reporting the rate of complications associated with ACDF in 50,584 patients were included in the present study. The overall postoperative complication rate was 16%. The most common complications were excessive neck swelling (11.3%), pseudarthrosis (10.0%), dysphagia (9.5%), cage/graft subsidence (9.4%), worsening myelopathy (7.7%), and hoarseness (2.3%). The rate of nonhome discharge, readmission, and mortality were 13.8%, 3.7%, and 0.1% respectively. Based on meta-regression, more levels of fusion and increased age were significantly associated with an increase in the pooled overall postoperative complication rate. Moreover, the rate of some postoperative complications was significantly associated with a number of perioperative characteristics.

Conclusions

To our knowledge, this study has been the most extensive meta-analysis conducted on the existing literature regarding ACDF-related complications and potential risk factors. However, future high-quality prospective studies or clinical trials are highly required to provide further evidence and also validate the present findings.

Dexamethasone Delivery via Amphiphilic, Low-swelling Hydrogels Treats Postoperative Inflammation in Cervical Spine Applications

Anterior cervical spine surgeries are often complicated by difficulty swallowing due to local postoperative swelling, pain, scarring, and tissue dysfunction. These postoperative events lead to systemic steroid and narcotic use. Local, sustained drug delivery may address these problems, but current materials are unsafe for tight surgical spaces due to high biomaterial swelling, especially upon degradation. To address these shortcomings, a low-swelling, amphiphilic hydrogel system termed DexaPatch is developed containing dexamethasone-poly(lactic-co-glycolic acid) (PLGA) microparticles for sustained release upon local implantation in the surgical site. The bulk amphiphilic hydrogel, comprised of 4-arm poly(ethylene glycol) (PEG)-maleimide macromer cross-linked with triblock dithiolated PEG-poly(propylene glycol)-PEG (poloxamer a.k.a. Pluronic), achieves consistent and tunable mechanical and low-swelling properties. Dexamethasone is released in a burst, followed by a sustained release over 40 days, similar to the release from microparticles alone. The DexaPatch system is lyophilized for shelf stability and surgical handling properties, sterilized, and briefly rehydrated in the operating room prior to surgical implantation in a rabbit model of anterior spinal surgery. DexaPatch results in significantly reduced prevertebral edema radiographically and decreased fibrosis in prevertebral muscles compared to sham surgery. This implantable biomaterial platform reduces local postoperative inflammation with potential surgical applications throughout the body.

Dendritic alterations precede age-related dysphagia and nucleus ambiguus motor neuron death

Motor neurons (MNs) within the nucleus ambiguus innervate the skeletal muscles of the larynx, pharynx and oesophagus, which are essential for swallow. Disordered swallow (dysphagia) is a serious problem in elderly humans, increasing the risk of aspiration, a key contributor to mortality. Despite this importance, very little is known about the pathophysiology of ageing dysphagia and the relative importance of frank muscle weakness compared to timing/activation abnormalities. In elderly humans and in aged Fisher 344 (F344) rats, a variety of motor pools exhibit weakness and atrophy (sarcopenia), contemporaneous to MN death. Synchronisation of swallow is dependent on the stability of MN dendrites, which integrate neural circuits. Dendritic derangement occurs in many neuromotor degenerative conditions prior to MN death. We hypothesise behavioural weakness and death of nucleus ambiguus MNs will occur by age 24 months in F344 rats and that this will be preceded by swallow-respiration dyscoordination and dendritic arbour degenerations from 18 months compared to controls at 6 months. Using pressure catheters to estimate laryngeal and diaphragm function during naturalistic water bolus applications, we show that swallow number and post-swallow apnoeas are altered from 18 months. Swallow pressure (weakness) and nucleus ambiguus MN numbers (evaluated via stereological assessments of Nissl staining) were reduced at 24 months. Dendritic lengths, surface areas and dendritic spines were reduced in nucleus ambiguus MNs from 18 months (evaluated by confocal imaging of Golgi-Cox impregnated brainstem). These results show that synapse loss occurs prior to MN death and behavioural weakness. Strategies to preserve synapses may be of utility in ameliorating sarcopenia. KEY POINTS: Dysphagia is a major contributor to ageing morbidity and mortality, but the underling pathophysiology is unexplored. Here, in Fischer 344 rats, we use pressure and timing evaluations of swallow-respiration, showing timing impairments occur prior to frank pressure defects. In nucleus ambiguus motor neurons, dendritic defects were apparent with the onset of swallow-respiration dyscoordination, with frank motor neuron loss occurring subsequently to synapse loss. Our results show that synapse loss occurs prior to motor neuron death and behavioural impairments. Strategies to preserve synapses may be of utility in ameliorating sarcopaenia.

Treatment decision-making factors among patients with cervical myelopathy: a discrete-choice experiment

BACKGROUND

Degenerative Cervical Myelopathy is a debilitating condition and current recommendations encourage shared decision-making between surgeons and patients. However, there is limited data on patients' values and preferences for surgical decision making. This study aimed to quantify and compare the relative importance of neurologic function, risk of future surgery, and complications to patients with cervical stenosis.

METHODS

Patients with cervical stenosis presenting for surgical evaluation, or post-operative cervical decompression patients, were recruited to participate. Demographic information including modified Japanese Orthopedic Association (mJOA) score, type of surgery, and complications were recorded and anonymized to study ID. Patients then completed an online discrete-choice experiment survey. In a series of 10 questions, respondents chose between two hypothetical health states defined in terms of five attributes, or "decision factors": (i) upper extremity neurologic function, (ii) lower extremity neurologic function, (iii) risk of cervical spine surgery, (iv) dysphagia, and (v) C5 palsy. Participants were asked to choose which 'life' they preferred, and a regression model was used to quantify the importance of each decision factor.

RESULTS

We report three key findings that can aid clinicians in shared decision-making conversations: (i) all patients regard lower extremity neurologic function as the most important decision factor, (ii) dysphagia, a complication, and upper extremity neurologic function are equally important, and (iii) patients who have undergone surgery weigh neurologic function as less important, and complications as more important than patients who have not undergone surgery.

CONCLUSIONS

Patient preferences for management of degenerative cervical myelopathy are influenced by several considerations including the experience of surgery itself. Communication of benefits and harms associated with surgical and conservative care can optimize shared decision making. Further research should be conducted to evaluate for decisional regret and the impact of complications to inform treatment conversations.

Reducing Dysphagia Following Anterior Cervical Spine Surgery: Insights From a Meta-Analysis

A systematic search was conducted across PubMed, Embase, and Cochrane Library databases to identify relevant studies. The analysis focused on the influence of surgical duration, the number of cervical levels treated, and implant types. A total of 21 studies were included, and heterogeneity among studies was evaluated using the I² statistic.  The results indicated that longer surgeries, multi-level procedures, and certain implant designs were associated with an increased risk of dysphagia. In contrast, low-profile implants and stand-alone cage systems demonstrated a reduced risk compared to traditional plate-and-cage constructs. Anterior plates and specific cage designs were linked to higher dysphagia rates. The findings suggest that the risk of dysphagia after anterior cervical spine surgery (ACSS) is influenced by the length of surgery, the number of motion segments treated, and implant design. Optimizing these factors could help reduce postoperative complications and improve patient outcomes.

Compensatory strategies of dysphagia after anterior cervical spinal surgery: A case report

RATIONALE

Dysphagia after anterior cervical discectomy and fusion (ACDF) is a common postoperative complication. However, information regarding rehabilitation strategies for postoperative dysphagia is limited. Herein, we report a compensatory strategy for treating dysphagia after ACDF.

PATIENT CONCERNS

A 65-year-old Asian male presented with left arm pain and weakness for more than 1 month. Magnetic resonance imaging of the cervical spine revealed degenerative disc lesions and spinal stenosis at the C3 to C7 levels. The patient underwent ACDF at the C3 to C5 levels and artificial disc replacement at the C5 to C7 levels by right side approach. After surgery, the patient complained of difficulty swallowing. A video fluoroscopic swallowing study (VFSS) detected swallowing dysfunction in the pharyngeal phase, revealing an asymmetric pharyngeal residue in the anterior-posterior view.

DIAGNOSIS

The patient was diagnosed with dysphagia after ACDF.

INTERVENTIONS

Based on the VFSS findings, the patient underwent swallowing rehabilitation therapy and compensatory techniques, such as head rotation to the weak right side and head tilting to the robust left side.

OUTCOMES

After 2 months of rehabilitation with compensatory techniques, food moved smoothly towards the robust side, and the subjective symptoms of dysphagia improved.

LESSONS

Consequently, swallowing function post-ACDF surgery must be assessed; if unilateral dysphagia is detected, compensatory techniques may prove beneficial. This case study showed that, based on the objective findings of the VFSS, an effective swallowing compensation strategy can be established and applied to patients with postoperative dysphagia.

Dysphagia After Anterior Cervical Spine Surgery: Pathophysiology, Diagnosis, and Management

Anterior cervical spine surgery (ACSS) is a surgical intervention widely used for a myriad of indications including degenerative, oncologic, inflammatory, traumatic, and congenital spinal conditions. A primary concern for surgeons performing ACSS is the postoperative development of oropharyngeal dysphagia. Current literature reports a wide incidence of this complication ranging from 1 to 79%. Dysphagia after ACSS is multifactorial, with common risk factors being prolonged duration of operation, revision surgeries, multilevel surgeries, and use of recombinant human bone morphogenetic protein-2. Many technical strategies have been developed to reduce the risk of postoperative dysphagia, including the development of low-profile implants and retropharyngeal local steroid application. In this article, we review the most recent literature regarding the epidemiology and pathophysiology, diagnostic criteria, risk factors, and management of dysphagia after ACSS.

Does Operative Level Impact Dysphagia Severity After Anterior Cervical Discectomy and Fusion?: A Multicenter Prospective Analysis

STUDY DESIGN

Prospective multicenter cohort study.

OBJECTIVE

To explore the association between operative level and postoperative dysphagia after anterior cervical discectomy and fusion (ACDF).

BACKGROUND

Dysphagia is common after ACDF and has several risk factors, including soft tissue edema. The degree of prevertebral soft tissue edema varies based on the operative cervical level. However, the operative level has not been evaluated as a source of postoperative dysphagia.

PATIENTS AND METHODS

Adult patients undergoing elective ACDF were prospectively enrolled at 3 academic centers. Dysphagia was assessed using the Bazaz Questionnaire, Dysphagia Short Questionnaire, and Eating Assessment Tool-10 (EAT-10) preoperatively and at 2, 6, 12, and 24 weeks postoperatively. Patients were grouped based on the inclusion of specific surgical levels in the fusion construct. Multivariable regression analyses were performed to evaluate the independent effects of the number of surgical levels and the inclusion of each particular level on dysphagia symptoms.

RESULTS

A total of 130 patients were included. Overall, 24 (18.5%) patients had persistent postoperative dysphagia at 24 weeks and these patients were older, female, and less likely to drink alcohol. There was no difference in operative duration or dexamethasone administration. Patients with persistent dysphagia were significantly more likely to have C4-C5 included in the fusion construct (62.5% vs . 34.9%, P = 0.024) but there were no differences based on the inclusion of other levels. On multivariable regression, the inclusion of C3-C4 or C6-C7 was associated with more severe EAT-10 (β: 9.56, P = 0.016 and β: 8.15, P = 0.040) and Dysphagia Short Questionnaire (β: 4.44, P = 0.023 and (β: 4.27, P = 0.030) at 6 weeks. At 12 weeks, C3-C4 fusion was also independently associated with more severe dysphagia (EAT-10 β: 4.74, P = 0.024).

CONCLUSION

The location of prevertebral soft tissue swelling may impact the duration and severity of patient-reported dysphagia outcomes at up to 24 weeks postoperatively. In particular, the inclusion of C3-C4 and C4-C5 into the fusion may be associated with dysphagia severity.

Prevalence of dysphagia in patients after orthopedic surgery

OBJECTIVES

Oropharyngeal dysphagia is one of the most prevalent health complications in older adults. The prevalence of postoperative dysphagia is expected to rise with the increasing number of older patients undergoing orthopedic surgery; however, the specific prevalence and contributing factors remain unclear. This scoping review aimed to identify the prevalence and factors related to postoperative dysphagia in older orthopedic patients.

METHODS

This review included studies published up to September 2022 on postoperative patients aged ≥ 60 years who underwent orthopedic surgery. We searched MEDLINE, EMBASE, CINAHL, CENTRAL, Web of Science, and Ichushi-Web.

RESULTS

In total, 21 of the 2158 identified studies were reviewed. The studies were classified into the three categories according to the surgical site: cervical spine disease (n = 12), hip fracture (n = 7), and others (n = 2). The estimated dysphagia prevalence rates [95 % confidence interval] of cervical spine disease, hip fractures, and others were 16 % [8-27], 32 % [15-54], and 6 % [4-8], respectively. Factors related to postoperative dysphagia included cervical alignment in cervical spine disease, being older within the cohort, preoperative health status, malnutrition, and sarcopenia in hip fractures.

CONCLUSIONS

The prevalence of postoperative dysphagia after orthopedic surgery was highest for hip fractures, followed by cervical spine and others. These results suggest non-neurogenic dysphagia in older patients undergoing orthopedic surgery and indicate that sarcopenia may contribute to postoperative dysphagia in this population. Therefore, further research should clarify the trajectory of postoperative dysphagia and the effectiveness of rehabilitation for postoperative dysphagia after orthopedic surgery.

Does Anterior Cervical Spine Surgery Increase the Likelihood of Developing Obstructive Sleep Apnea? A Pearldiver Study

OBJECTIVES

Literature is sparse on the development of obstructive sleep apnea (OSA) after anterior cervical spine surgery and includes few case reports. Our objective is to evaluate the role of anterior cervical spine surgery as a risk factor for developing OSA.

METHODS

A retrospective cohort study was performed utilizing the M157 subset of the PearlDiver national database. Two matched cohorts of patients were identified based on anterior cervical spine surgery using CPT codes. ICD-9 and 10 was used to identify patients who developed OSA within one year time frame in both the cohorts. Relative risk of OSA was calculated for the study and risk factors for developing OSA in the cohort of anterior cervical surgery were evaluated using logistic regression.

RESULTS

The 2 cohorts contained 277,475 patients each. The 1-year incidence rate of OSA in those who undergo anterior cervical spine surgery is 3.5% and is 3.1% in the control group. The relative risk of OSA in the surgery group is 1.13 times compared to the control. Multilevel cervical spine surgery and surgery performed for spondylosis had a higher risk of developing OSA.

CONCLUSIONS

Anterior cervical spine surgery is associated with an increased risk of developing OSA within one year of surgery. Timely diagnosis and management of OSA in patients who underwent anterior cervical spine surgery can help prevent morbidity and improve quality of life (QOL).

Anterior vs Posterior Surgery for Patients With Degenerative Cervical Myelopathy: An Observational Study From the Canadian Spine Outcomes and Research Network

BACKGROUND AND OBJECTIVES

The advantages and disadvantages of anterior vs posterior surgical approaches for patients with progressive degenerative cervical myelopathy (DCM) remain uncertain. Our primary objective was to evaluate patient-reported disability at 1 year after surgery. Our secondary objectives were to evaluate differences in patient profiles selected for each approach in routine clinical practice and to compare neurological function, neck and arm pain, health-related quality of life, adverse events, and rates of reoperations.

METHODS

We analyzed data from patients with DCM who were enrolled in an ongoing multicenter prospective observational cohort study. We controlled for differences in baseline characteristics and numbers of spinal levels treated using multivariable logistic regression. Adverse events were collected according to the Spinal Adverse Events Severity protocol.

RESULTS

Among 559 patients, 261 (47%) underwent anterior surgery while 298 (53%) underwent posterior surgery. Patients treated posteriorly had significantly worse DCM severity and a greater number of vertebral levels involved. After adjusting for confounders, there was no significant difference between approaches for odds of achieving the minimum clinically important difference for the Neck Disability Index (odds ratio 1.23, 95% CI 0.82 to 1.86, P = .31). There was also no significant difference for change in modified Japanese Orthopedic Association scores, and differences in neck and arm pain and health-related quality of life did not exceed minimum clinically important differences. Patients treated anteriorly experienced greater rates of dysphagia, whereas patients treated posteriorly experienced greater rates of wound complications, neurological complications, and reoperations.

CONCLUSION

Patients selected for posterior surgery had worse DCM and a greater number of vertebral levels involved. Despite this, anterior and posterior surgeries were associated with similar improvements in disability, neurological function, pain, and quality of life. Anterior surgery had a more favorable profile of adverse events, which suggests it might be a preferred option when feasible.

Impact of Frailty and Cervical Radiographic Parameters on Postoperative Dysphagia Following Anterior Cervical Spine Surgery

STUDY DESIGN

Retrospective review of a prospectively collected registry.

OBJECTIVE

The purpose of the present study was to investigate the impact of frailty and radiographical parameters on postoperative dysphagia after anterior cervical spine surgery (ACSS).

SUMMARY OF BACKGROUND DATA

There is a growing body of literature indicating an association between frailty and increased postoperative complications following various surgeries. However, few studies have investigated the relationship between frailty and postoperative dysphagia after anterior cervical spine surgery.

MATERIALS AND METHODS

Patients who underwent anterior cervical spine surgery for the treatment of degenerative cervical pathology were included. Frailty and dysphagia were assessed by the modified Frailty Index-11 (mFI-11) and Eat Assessment Tool 10 (EAT-10), respectively. We also collected clinical demographics and cervical alignment parameters previously reported as risk factors for postoperative dysphagia. Multivariable logistic regression was performed to identify the odds ratio (OR) of postoperative dysphagia at early (2-6 weeks) and late postoperative time points (1-2 years).

RESULTS

Ninety-five patients who underwent ACSS were included in the study. Postoperative dysphagia occurred in 31 patients (32.6%) at the early postoperative time point. Multivariable logistic regression identified higher mFI-11 score (OR, 4.03; 95% CI: 1.24-13.16; P =0.021), overcorrection of TS-CL after surgery (TS-CL, T1 slope minus C2-C7 lordosis; OR, 0.86; 95% CI: 0.79-0.95; P =0.003), and surgery at C3/C4 (OR, 12.38; 95% CI: 1.41-108.92; P =0.023) as factors associated with postoperative dysphagia.

CONCLUSIONS

Frailty, as assessed by the mFI-11, was significantly associated with postoperative dysphagia after ACSS. Additional factors associated with postoperative dysphagia were overcorrection of TS-CL and surgery at C3/C4. These findings emphasize the importance of assessing frailty and cervical alignment in the decision-making process preceding ACSS.

Posterior cervical foraminotomy versus anterior cervical discectomy for Cervical Brachialgia: the FORVAD RCT

Background

Posterior cervical foraminotomy and anterior cervical discectomy are routinely used operations to treat cervical brachialgia, although definitive evidence supporting superiority of either is lacking.

Objective

The primary objective was to investigate whether or not posterior cervical foraminotomy is superior to anterior cervical discectomy in improving clinical outcome.

Design

This was a Phase III, unblinded, prospective, United Kingdom multicentre, parallel-group, individually randomised controlled superiority trial comparing posterior cervical foraminotomy with anterior cervical discectomy. A rapid qualitative study was conducted during the close-down phase, involving remote semistructured interviews with trial participants and health-care professionals.

Setting

National Health Service trusts.

Participants

Patients with symptomatic unilateral cervical brachialgia for at least 6 weeks.

Interventions

Participants were randomised to receive posterior cervical foraminotomy or anterior cervical discectomy. Allocation was not blinded to participants, medical staff or trial staff. Health-care use from providing the initial surgical intervention to hospital discharge was measured and valued using national cost data.

Main outcome measures

The primary outcome measure was clinical outcome, as measured by patient-reported Neck Disability Index score 52 weeks post operation. Secondary outcome measures included complications, reoperations and restricted American Spinal Injury Association score over 6 weeks post operation, and patient-reported Eating Assessment Tool-10 items, Glasgow-Edinburgh Throat Scale, Voice Handicap Index-10 items, PainDETECT and Numerical Rating Scales for neck and upper-limb pain over 52 weeks post operation.

Results

The target recruitment was 252 participants. Owing to slow accrual, the trial closed after randomising 23 participants from 11 hospitals. The qualitative substudy found that there was support and enthusiasm for the posterior cervical FORaminotomy Versus Anterior cervical Discectomy in the treatment of cervical brachialgia trial and randomised clinical trials in this area. However, clinical equipoise appears to have been an issue for sites and individual surgeons. Randomisation on the day of surgery and processes for screening and approaching participants were also crucial factors in some centres. The median Neck Disability Index scores at baseline (pre surgery) and at 52 weeks was 44.0 (interquartile range 36.0-62.0 weeks) and 25.3 weeks (interquartile range 20.0-42.0 weeks), respectively, in the posterior cervical foraminotomy group (n = 14), and 35.6 weeks (interquartile range 34.0-44.0 weeks) and 45.0 weeks (interquartile range 20.0-57.0 weeks), respectively, in the anterior cervical discectomy group (n = 9). Scores appeared to reduce (i.e. improve) in the posterior cervical foraminotomy group, but not in the anterior cervical discectomy group. The median Eating Assessment Tool-10 items score for swallowing was higher (worse) after anterior cervical discectomy (13.5) than after posterior cervical foraminotomy (0) on day 1, but not at other time points, whereas the median Glasgow-Edinburgh Throat Scale score for globus was higher (worse) after anterior cervical discectomy (15, 7, 6, 6, 2, 2.5) than after posterior cervical foraminotomy (3, 0, 0, 0.5, 0, 0) at all postoperative time points. Five postoperative complications occurred within 6 weeks of surgery, all after anterior cervical discectomy. Neck pain was more severe on day 1 following posterior cervical foraminotomy (Numerical Rating Scale - Neck Pain score 8.5) than at the same time point after anterior cervical discectomy (Numerical Rating Scale - Neck Pain score 7.0). The median health-care costs of providing initial surgical intervention were £2610 for posterior cervical foraminotomy and £4411 for anterior cervical discectomy.

Conclusions

The data suggest that posterior cervical foraminotomy is associated with better outcomes, fewer complications and lower costs, but the trial recruited slowly and closed early. Consequently, the trial is underpowered and definitive conclusions cannot be drawn. Recruitment was impaired by lack of individual equipoise and by concern about randomising on the day of surgery. A large prospective multicentre trial comparing anterior cervical discectomy and posterior cervical foraminotomy in the treatment of cervical brachialgia is still required.

Trial registration

This trial is registered as ISRCTN10133661.

Funding

This project was funded by the National Institute for Health and Care Research (NIHR) Health Technology Assessment programme and will be published in full in Health Technology Assessment; Vol. 27, No. 21. See the NIHR Journals Library website for further project information.

Anterior Cervical Spine Surgery Complicated With Dysphagia

Anterior cervical spine surgery is a common type of neck surgery in orthopaedics. Swallowing disorder is one of the most common complications after surgery. It is characterized by food entering the esophagus from the mouth through the pharynx. The process of reaching the stomach is hampered and leads to increases in a range of risk factors that affect the health of the patient. This article reviews relevant literature reports from recent years retrieved from various national and international medical databases, aiming to find more economical, effective, and simple perioperative nursing strategies for patients with cervical anterior surgery through evidence-based thinking and methods, with the aim of developing a personalized care model that is easy to implement and has a long-lasting effect and a wide range of rehabilitation benefits to better serve patients.

Impact of anxiety and depression on the swallowing process among patients with neurological disorders and head and neck neoplasia: systemic review

Background

Dysphagia is associated with depression and anxiety due to the severity, impact of symptoms itself or secondary to the underlying cause. This is more recognizable to brain diseases that has consequences common to the neural supply of the swallowing act and the cognition and behavior. Limited data are available to explore, quantitate and monitor these neurological outcomes. Our aim of this research to review the literature pertinent to depressive disorders, anxiety, and/or the quality of life (QoL) and psychological well-being. Search of Medline and Google Scholar databases for relevant articles had revealed a total of 1568 citations; 30 articles met the inclusion and exclusion criteria.

Results

Data about the direct effect of dysphagia on psychiatric aspects are limited. Studies of the relationship between severity of dysphagia and depressive symptoms demonstrated that several evaluation tools are available for objective and subjective assessment. The severity and progression of dysphagia was significantly associated with increased depressive symptoms.

Conclusion

Dysphagia is associated with and positively correlated to depression and anxiety scores observed in Parkinson disease (PD), multiple sclerosis (MS) and stroke. Similar association is observed in patients with head and neck cancer, tongue cancer and oral cancer. A bidirectional positive correlation exists with a vicious circle that loops between dysphagia and psychological disease. Moreover, the severity of dysphagia shows correlation with depression and/or anxiety scores (Fig. 1, Graphical abstract).

Graphical Abstract

Vertebral Body Sliding Osteotomy as a Surgical Strategy for the Treatment of Cervical Myelopathy: Complications and Pitfalls

OBJECTIVE

This retrospective cohort study has been aimed at evaluating the incidence of complications after vertebral body sliding osteotomy (VBSO) and analyzing some cases. Furthermore, the complications of VBSO were compared with those of anterior cervical corpectomy and fusion (ACCF).

METHODS

This study included 154 patients who underwent VBSO (n = 109) or ACCF (n = 45) for cervical myelopathy and were followed up for > 2 years. Surgical complications, clinical and radiological outcomes were analyzed.

RESULTS

The most common surgical complications after VBSO were dysphagia (n = 8, 7.3%) and significant subsidence (n = 6, 5.5%). There were 5 cases of C5 palsy (4.6%), followed by dysphonia (n = 4, 3.7%), implant failure (n = 3, 2.8%), pseudoarthrosis (n = 3, 2.8%), dural tears (n = 2, 1.8%), and reoperation (n = 2, 1.8%). C5 palsy and dysphagia did not require additional treatment and spontaneously resolved. The rates of reoperation (VBSO, 1.8%; ACCF, 11.1%; p = 0.02) and subsidence (VBSO, 5.5%; ACCF, 40%; p < 0.01) were significantly lower in VBSO than in ACCF. VBSO restored more C2-7 lordosis (VBSO, 13.9° ± 7.5°; ACCF, 10.1° ± 8.0°; p = 0.02) and segmental lordosis (VBSO, 15.7° ± 7.1°; ACCF, 6.6° ± 10.2°; p < 0.01) than ACCF. The clinical outcomes did not significantly differ between both groups.

CONCLUSION

VBSO has advantages over ACCF in terms of low rate of surgical complications related to reoperation and significant subsidence. However, dural tears may still occur despite the lessened need for ossified posterior longitudinal ligament lesion manipulation in VBSO; hence, caution is warranted.

Association between Anterior Surgical Approach and Dysphagia Severity in Patients with Cervical Spinal Cord Injury

INTRODUCTION

Early detection and management of dysphagia are essential for preventing aspiration pneumonia and reducing mortality in patients with cervical spinal cord injury (C-SCI). In this study, we identified risk factors for dysphagia in patients with C-SCI by analyzing the correlation between the clinical factors and the severity of dysphagia, not the presence or absence of dysphagia. Combined with the analysis results of previous studies, we thought that this additional analysis method could more accurately reveal the risk factors for dysphagia in patients with C-SCI.

METHODS

The presence and severity of dysphagia in patients with C-SCI was evaluated using a modified videofluoroscopic dysphagia scale (mVDS) and penetration-aspiration scale (PAS). All included patients with C-SCI performed a video fluoroscopic swallowing study (VFSS). Clinical factors such as age, sex, the presence of tracheostomy, spinal cord independence measure (SCIM), pulmonary function test (PFT), including forced vital capacity (FVC), forced expiratory volume in 1 s (FEV1), FVC/FEV1, maximal inspiratory pressure (MIP), and maximal expiratory pressure (MEP), American Spinal Cord Injury Association (ASIA) score, Berg Balance Scale (BBS), and operation method were investigated.

RESULTS

In the multivariate regression analysis, the anterior surgical approach was the only clinical factor that had a significant correlation in both mVDS and PAS, which represents the severity of dysphagia in C-SCI patients (p < 0.05).

CONCLUSION

The anterior surgical approach was correlated with the severity of dysphagia in patients with C-SCI. Considering this, as one of the risk factors affecting dysphagia in patients with C-SCI, surgical method may also need to be considered. Additionally, we recommend that clinicians should pay particular attention to the potential for development of dysphagia in patients who received anterior cervical surgery. However, further prospective studies with larger sample sizes are needed for more accurate generalization.

A Decision Guide for Assessing the Recently Extubated Patient's Readiness for Safe Oral Intake

BACKGROUND

Postextubation dysphagia is a known consequence of endotracheal intubation. Several risk factors for postextubation dysphagia have been identified that could be used to help determine which patients should undergo swallowing assessment by an appropriate professional.

LOCAL PROBLEM

At the authors' institution, critical care nurses, health care providers, and speech-language pathology professionals lacked a clear process for referring patients for swallowing assessment after extubation, resulting in inefficiency and confusion. Information to guide their decision-making in this area was needed. To address this need, a multidisciplinary group convened and developed a guide with specific indicators.

METHODS

A review of the literature on postextubation dysphagia was conducted to determine the most appropriate indicators for the guide, which was piloted in the medical intensive care unit. The utilization rate was calculated. Referrals to speech-language pathology professionals were tabulated before and after the project.

RESULTS

During the 11 months before implementation of the project, there were 994 speech-language pathology consultations for postextubation evaluation of swallowing. During the 11 months after implementation, there were 831 consultations, representing a 16.4% reduction. The decline in consultations resulted in cost savings in addition to preventing unnecessary testing before patients' resumption of oral intake. The utilization rate for the guide during the project was 58%.

CONCLUSION

The decision guide was an effective tool to help nurses and health care providers determine which patients should be referred to speech-language pathology professionals for swallowing assessment after extubation, facilitating the appropriate use of limited health care resources.

Safety and Efficacy of Local Steroid Application on Dysphagia Following Anterior Cervical Discectomy and Fusion: A Systematic Review and Meta-analysis

STUDY DESIGN

A systematic review and meta-analysis.

OBJECTIVE

To evaluate the safety and efficacy of local steroid application (LSA) on dysphagia after anterior cervical discectomy and fusion (ACDF).

SUMMARY OF BACKGROUND DATA

Dysphagia is one of the most common adverse events in the early postoperative period of ACDF. LSA is reported as an effective method to reduce the swelling of soft tissues, thereby decreasing the incidence of dysphagia. However, the safety and efficacy of LSA on dysphagia after ACDF need to be systematically reviewed and analyzed.

METHODS

A comprehensive literature search was carried out in the database PubMed, Web of Science, EMBASE, Clinical key, Cochrane library, and Wiley Online Library to screen papers that report LSA in ACDF surgery. The Cochrane Collaboration tool and a methodological index for nonrandomized studies were used for the assessment of study quality. Data were analyzed with the Review Manager 5.3 software.

RESULTS

A total of 10 studies were included. The results revealed no significant differences between the steroid group and the control group in ACDF regarding postoperative drainage, estimated blood loss, and neck disability index score (P > 0.05). LSA significantly alleviates visual analog scale score for neck pain (or odynophagia) (P < 0.05), reduces the length of hospital stay (weighted mean difference, -1.00 (-1.05 to -0.95); P < 0.001), and mitigates dysphagia rate and prevertebral soft-tissue swelling in the early postoperative period (P < 0.05). There seemed to be no significant increase in the complication rate and steroid-related adverse events in the steroid group compared with the control group (P < 0.05).

CONCLUSIONS

LSA shows advantages in reducing the length of hospital stay, decreasing dysphagia rate, and mitigating prevertebral soft-tissue swelling in the early postoperative period of ACDF. Further large-scale studies are urgently required for the development of a standard protocol for LSA and further analysis of potential delay complications.

Oropharyngeal Dysphagia in Acute Cervical Spinal Cord Injury: A Literature Review

Dysphagia (swallowing impairment) is a frequent complication of cervical spinal cord injury (cSCI). Recently published national guidance in the UK on rehabilitation after traumatic injury confirmed that people with cSCI are at risk for dysphagia and require early evaluation while remaining nil by mouth [National Institute for Health and Care Excellence. Rehabilitation after traumatic injury (NG211), 2022, https://www.nice.org.uk/guidance/ng21]. While the pathogenesis and pathophysiology of dysphagia in cSCI remains unclear, numerous risk factors have been identified in the literature. This review aims to summarize the literature on the risk factors, presentation, assessment, and management of dysphagia in patients with cSCI. A bespoke approach to dysphagia management, that accounts for the multiple system impairment in cSCI, is presented; the overarching aim of which is to support effective management of dysphagia in patients with cSCI to prevent adverse clinical consequences.

Research progress in the risk factors and screening assessment of dysphagia in the elderly

With the aging of the population, the incidence of dysphagia has gradually increased and become a major clinical and public health issue. Early screening of dysphagia in high-risk populations is crucial to identify the risk factors of dysphagia and carry out effective interventions and health management in advance. In this study, the current epidemiology, hazards, risk factors, preventive, and therapeutic measures of dysphagia were comprehensively reviewed, and a literature review of screening instruments commonly used globally was conducted, focusing on their intended populations, main indicators, descriptions, and characteristics. According to analysis and research in the current study, previous studies of dysphagia were predominantly conducted in inpatients, and there are few investigations and screenings on the incidence and influencing factors of dysphagia in the community-dwelling elderly and of dysphagia developing in the natural aging process. Moreover, there are no unified, simple, economical, practical, safe, and easy-to-administer screening tools and evaluation standards for dysphagia in the elderly. It is imperative to focus on dysphagia in the community-dwelling elderly, develop unified screening and assessment tools, and establish an early warning model of risks and a dietary structure model for dysphagia in the community-dwelling elderly.

Aggravation of dysphagia after surgical removal of anterior cervical osteophytes: a case report

Dysphagia induced by anterior cervical osteophytes (ACOs) is frequently reported in older individuals. Surgical resection of ACOs is considered when conservative treatment fails, but its effectiveness is controversial owing to side effects after surgery. We present the case of a 78-year-old man who complained of progressive dysphagia that started 10 months previously. A videofluoroscopic swallow study (VFSS) showed prominent ACOs along C2-C6, which translocated the upper hypopharynx anteriorly, impinging the lumen and impairing epiglottic folding and laryngeal closure. Aspiration of a soft diet was observed. Despite conservative therapy, the symptoms persisted, and ACO resection surgery was performed. Unexpectedly, the patient's dysphagia worsened immediately post-surgery. A VFSS on postoperative day (POD) 2 showed improvement in epiglottic folding. However, prevertebral soft tissue swelling and dysfunction of opening of the upper esophageal sphincter newly arose. Laryngeal aspiration was observed during 5 cc and a large amount of liquid swallowing trials. The patient was provided a modified diet and rehabilitative dysphagia therapy. A VFSS on PODs 6 and 14 showed a gradual improvement in the prevertebral soft tissue swelling. This report suggests that a serial VFSS is effective for evaluating the different mechanisms of dysphagia and for devising an appropriate treatment plan.

A Systematic Review of Definitions for Dysphagia and Dysphonia in Patients Treated Surgically for Degenerative Cervical Myelopathy

STUDY DESIGN

Systematic review. Surgical decompression for degenerative cervical myelopathy (DCM) is associated with perioperative complications, including difficulty or discomfort with swallowing (dysphagia) as well as changes in sound production (dysphonia). This systematic review aims to (1) outline how dysphagia and dysphonia are defined in the literature and (2) assess the quality of definitions using a novel 4-point rating system.

METHODS

An electronic database search was conducted for studies that reported on dysphagia, dysphonia or other related complications of DCM surgery. Data extracted included study design, surgical details, as well as definitions and rates of surgical complications. A 4-point rating scale was developed to assess the quality of definitions for each complication.

RESULTS

Our search yielded 2,673 unique citations, 11 of which met eligibility criteria and were summarized in this review. Defined complications included odynophagia (n = 1), dysphagia (n = 11), dysphonia (n = 2), perioperative swelling complications (n = 2), and soft tissue swelling (n = 3). Rates of dysphagia varied substantially (0.0%-50.0%) depending on whether this complication was patient-reported (4.4%); patient-reported using a modified Swallowing Quality of Life questionnaire (43.1%) or the Bazaz criteria (8.8%-50.0%); or diagnosed using an extensive protocol consisting of clinical assessment, a bedside swallowing test, evaluation by a speech and language pathologist and a modified barium swallowing test/fiberoptic endoscopy (42.9%). The reported incidences of dysphonia also ranged significantly from 0.6% to 38.0%.

CONCLUSION

There is substantial variability in reported rates of dysphagia and dysphonia due to differences in data collection methods, diagnostic strategies, and definitions. Consolidation of nomenclature will improve evaluation of the overall safety of surgery.

Dysphagia as a Postoperative Complication of Anterior Cervical Discectomy and Fusion

Anterior cervical discectomy and fusion (ACDF), despite its possible complications, remains the gold standard for the surgical treatment of patients with radiculopathy and/or myelopathy caused by cervical intervertebral disc herniation or spondylosis. Despite its high rate of incidence, postoperative dysphagia following ACDF is still poorly understood; its pathogenesis remains relatively unknown, and its risk factors are still a subject of debate.

The aim of this study is to review the incidence, pathogenesis, diagnosis, and methods of prevention of dysphagia in ACDF patients. To this end, a literature review was conducted based on the PubMed internet database. Article titles were searched by using the following keywords: “dysphagia” and “anterior cervical discectomy and fusion” or “ACDF”. The search was limited to prospective clinical studies evaluating dysphagia after ACDF surgery. Studies published in non-English languages, retrospective studies, cadaveric studies, reviews, case reports, study protocols, and commentary studies were excluded.

Initially, 335 studies were identified after a primary search. After the application of the exclusion criteria, 73 studies remained for the final analysis. This literature review focused on identifying the rate of dysphagia and the various risk factors leading to this complication by comparing and evaluating the current literature with a wide spectrum of heterogeneity concerning patients, surgeons, and surgical techniques. A mean dysphagia rate of 19.4% (95% CI: 9.6%-29.1%) based on the findings of the included studies correlating dysphagia directly with ACDF procedures was calculated. Various established risk factors leading to dysphagia include the female sex, smoking, the surgical approach, rhBMP-2 use, and multilevel surgery, while zero-profile devices seem to reduce dysphagia risk. The diagnosis is based on clinical and radiological findings, especially prevertebral soft-tissue swelling. However, videofluoroscopic and endoscopic studies have been recently used for the evaluation of dysphagia. The role of local administration of steroids in the prevention of dysphagia has not yet been clarified. This review underscores the prevailing rudimentary understanding of the problem of dysphagia after ACDF procedures and highlights the need for more sensitive, factor-specific studies for understanding the impact of various risk factors on the incidence rate of dysphagia.

Anterior servikal omurga cerrahisi sonrası farklı endotrakeal tüp kaf basınçlarının disfajı üzerine etkileri

Amaç: Bu çalışmada, anterior servikal omurga cerrahisinde iki farklı endotrakeal kaf basıncının postoperatif disfaji, boğaz ağrısı, disfoni ve hastanede kalış üzerindeki etkilerinin karşılaştırılması amaçlanmıştır. Gereç ve Yöntem: Cerrahi planlanan 70 hasta rastgele iki gruba ayrıldı. Entübasyondan sonra endotrakeal kaf basıncı Grup I'de (n=35) ve Grup II'de (n=35) sırasıyla 20 cmH2O ve 25 cmH2O'ya şişirildi. Disfajinin derecesi Bazaz disfaji skoru ile değerlendirildi. Boğaz ağrısı Görsel Analog Skala ile değerlendirildi. Operasyon bölgesine ilişkin toplam ağrı skoru VAS kullanılarak değerlendirildi (. Ses kısıklığı, seste herhangi bir değişiklik olup olmamasına göre sert veya gergin olarak değerlendirildi. Disfaji, disfoni ve boğaz ağrısı ameliyat sonrası 1. ve 24. saatlerde değerlendirildi. Bulgular: Gruplar arasında demografik verilerde farklılık yoktu. Ameliyat sonrası 1. ve 24. saatlerde yutma güçlüğü ve boğaz ağrısı Grup I'de Grup II'ye göre anlamlı olarak daha azdı. Disfoni sıklığı Grup I'de Grup II'ye kıyasla sadece cerrahi sonrası 1. saatte anlamlı olarak daha azdı. Gruplar arasında ameliyat sonrası 1. ve 24. saatlerde VAS skorlarında fark yoktu. Sonuç: Bu çalışmada, 25 cmH2O'ya kıyasla endotrakeal kaf basıncı 20 cmH2O ile cerrahi sonrası disfaji gelişme riskinin önemli ölçüde azalttığı gösterilmiştir. Ayrıca, daha düşük kaf basıncı, daha hafif bir boğaz ağrısı, ameliyat sonrası 1. saatte daha az ses kısıklığı ve daha kısa hastanede kalış süresi ile ilişkilendirildi.

Effect of Absorbable Collagen sponge and Steroid Injectionfor One or Two Segment Anterior Cervical Discectomy and fusion: A Retrospective comparison study

BACKGROUND

Dysphagia, mostly resulting from prevertebral soft tissue swelling (PSTS), is a common and refractory complication of anterior cervical discectomy and fusion (ACDF). Although the symptoms are mild and moderate in most cases, severe dysphagia can incur significant mental burdens and morbidity in some patients. This retrospective study aims to analyze the effect of absorbable collagen sponge and steroid injection (ACS-SI) for patients with ACDF.

METHOD

150 patients in the ACS-SI group and 175 in the ANCS-SI group were enrolled in this study from the Affiliated Lihuili Hospital of Ningbo University from January 2018 to November 2020. Baseline characteristics and operation parameters were collected from medical records. The swallowing function was evaluated by the Swallowing-Quality of Life (SWAL-QOL) survey, odynophagia was assessed by visual analog scale (VAS), and prevertebral soft tissue swelling index (PSTSI) was measured.

RESULTS

There was no significant difference in baseline characteristics and operation parameters between the two groups. The improvement of PSTSI and recovery of swallowing function in the ACS-SI group was better than that in the ANCS-SI group at 1 day and 1 month follow-up visit (P<0.05). The VAS score was significantly higher at 2 and 7 days after operation in the ANCS-SI group than that in the ACS-SI group (6.61±0.68 VS 5.52±0.74 and 4.23±0.90 VS 2.08±0.56, P<0.05). There was no significant difference in clinical outcomes between the two groups after 1 month (P>0.05).

CONCLUSION

The use of ACS-SI is beneficial to relieve postoperative odynophagia, reduce PSTS and recover swallow function.

Stand-Alone Cage Versus Anterior Plating for 1-Level and 2-Level Anterior Cervical Discectomy and Fusion: A Randomized Controlled Trial

STUDY DESIGN

Prospective, randomized controlled trial.

OBJECTIVE

The aim was to compare perioperative and radiographic outcomes between stand-alone and anterior plated 1 and 2-level anterior cervical discectomy and fusion (ACDF).

SUMMARY OF BACKGROUND DATA

ACDF with interbody spacer and separate plate/screw construct (PLATE) may be associated with a higher incidence of postoperative dysphagia, increased operative time, and other complications. Therefore, some have opted to utilize an interbody cage with integrated screws and no plate (CAGE) with good results.

MATERIALS AND METHODS

Patients with 1-level to 2-level degenerative disease were prospectively enrolled and randomized into 1 of 2 treatment arms consisting of either PLATE or CAGE reconstruction. Patients were followed for a minimum of 1 year postoperatively. Primary endpoints included improvement on patient-reported outcome metrics, construct integrity, cervical alignment, successful arthrodesis, and subsequent revision surgeries.

RESULTS

Forty-six patients were included: 12 with 1-level PLATE, 12 with 1-level CAGE, 12 with 2-level PLATE, and 10 with 2-level CAGE. For 1-level ACDF, PLATE patients reported worse swallow function on Swallowing Quality of Life Questionnaire at 6 weeks (P=0.050) and 6 months (P=0.042). Pseudarthrosis requiring revision was observed in one PLATE patient. For 2-level ACDF CAGE patients reported worse disability on neck disability index (P=0.037) at 6 weeks, as well as worse neck disability index (P=0.017) and visual analog scale neck (P=0.010) at 6 months. However, PLATE patients reported worse swallow function on Swallowing Quality of Life Questionnaire at 6 weeks (P=0.038). There were no differences in the rates of fusion, loss of disc height correction, subsidence, or in sagittal parameters between cohorts for both 1-level and 2-level ACDF.

CONCLUSION

There was greater incidence of transient postoperative dysphagia in both single and 2-level PLATE cohorts. However, early postoperative outcomes were worse for 2-level CAGE in certain patient-reported metrics. This suggests that although anterior instrumentation may be associated with a higher likelihood of dysphagia, it may also lead to higher short-term stability and improved patient-reported outcomes for 2-level fusion.

Critical analysis of the evaluation of postoperative dysphagia following an anterior cervical discectomy and fusion

BACKGROUND AND PURPOSE

Postoperative dysphagia is a known complication of anterior cervical discectomy and fusion (ACDF) with reported incidences ranging from 1 to 79%. No standardized guidelines exist for spine surgeons to evaluate postoperative dysphagia after ACDF. A systematic method may be beneficial in distinguishing transient postoperative dysphagia secondary to intubation from those with postoperative complications. This study evaluates the causes, recognition, and clinical evaluation of postoperative dysphagia following ACDF.

METHODS

International classification of disease (ICD) and current procedural terminology (CPT) codes were used to identify ACDF patients and compared to anterior lumbar discectomy and fusion (ALDF), serving as a control group, between the years 2015-2019 and those diagnosed with dysphagia within 1 year. Demographics, operative details, and clinical evaluation were reviewed. Exclusion criteria included history of head and neck procedures, cancer, stroke, radiation, and trauma.

RESULTS

One hundred thirty-one ACDF and 93 ALDF patients met inclusion criteria. Twenty-seven (20.6%) ACDF patients were diagnosed with dysphagia within 1 year. Less than half of the dysphagia patients had the word "dysphagia" documented in their 1-month spine surgeon follow up visit. Only 66% of dysphagia patients had specialist evaluation and one third of those patients were referred by their surgeon. Only six patients received diagnostic barium swallow evaluations.

CONCLUSION

Postoperative dysphagia risk increases in ACDF compared to ALDF, likely due to underlying anatomy. Postoperative dysphagia symptoms are not effectively documented by spine surgeons and as a result underevaluated by dysphagia specialists. Patients may benefit from more extensive pre- and post-operative screening, evaluation, and referral regarding dysphagia symptoms following ACDF.

Efficacy of Laryngeal Rehabilitation Therapy on Dysphagia after Anterior Cervical Surgery: Prospective, Randomized Control Trial

Dysphagia is the most common complication of anterior cervical discectomy and fusion (ACDF). Several studies have reported dysphagia's incidence, severity, and prognosis after ACDF; however, few have investigated the objective effects of dysphagia management. We aimed to elucidate the efficacy of laryngeal rehabilitation therapy for dysphagia following ACDF. This prospective randomized control trial included 20 patients who underwent more than two-level ACDF. Laryngeal rehabilitation therapy was performed on 10 patients for 7 days, whereas the remaining 10 comprised the control group. Pharyngeal transit time (PTT) by videofluoroscopic swallowing study (VFSS) was performed to evaluate the objective state of swallowing. We analyzed Bazaz scale and total variance of prevertebral soft tissue swelling (PSTS) from C2 to C7 on lateral cervical radiographs during hospitalization and at 4 and 8 weeks post-surgery. The PTT of the rehabilitation group was shorter than that of the control group at 7 days and 4 weeks post-surgery (p-value; POD 7D = 0.003, POD 4W = 0.042, POD 8W = 0.097). Perioperative laryngeal rehabilitation therapy effectively reduces postoperative dysphagia after ACDF.

Ramifications of Postoperative Dysphagia on Health Care Resource Utilization Following Elective Anterior Cervical Discectomy and Interbody Fusion for Cervical Spondylotic Myelopathy

STUDY DESIGN

This is a retrospective cohort study.

OBJECTIVE

The aim of this study was to investigate patient risk factors and health care resource utilization associated with postoperative dysphagia following elective anterior cervical discectomy and fusion (ACDF) for cervical spondylotic myelopathy.

SUMMARY OF BACKGROUND DATA

There is a paucity of data on factors predisposing patients to dysphagia and the burden this complication has on health care resource utilization following ACDF.

METHODS

A retrospective cohort study was performed using the Nationwide Inpatient Sample (NIS) database from 2016 to 2017. All adult (above 18 y old) patients undergoing ACDF for cervical spondylotic myelopathy were identified using the ICD-10-CM diagnosis and procedural coding system. Patients were then categorized by whether they had a recorded postoperative dysphagia or no dysphagia. Weighted patient demographics, comorbidities, perioperative complications, length of hospital stay (LOS), discharge disposition, and total cost of admission were assessed. A multivariate stepwise logistic regression was used to determine both the odds ratio for risk-adjusted postoperative dysphagia as well as extended LOS.

RESULTS

A total of 17,385 patients were identified, of which 1400 (8.1%) experienced postoperative dysphagia. Compared with the No-Dysphagia cohort, the Dysphagia cohort had a greater proportion of patients experiencing a complication (P=0.004), including 1 complication (No-Dysphagia: 2.9% vs. Dysphagia: 6.8%), and >1 complication (No-Dysphagia: 0.3% vs. Dysphagia: 0.4%). The Dysphagia cohort experienced significantly longer hospital stays (No-Dysphagia: 1.9±2.1 d vs. Dysphagia: 4.2±4.3 d, P<0.001), higher total cost of admission (No-Dysphagia: $19,441±10,495 vs. Dysphagia: $25,529±18,641, P<0.001), and increased rates of nonroutine discharge (No-Dysphagia: 16.5% vs. Dysphagia: 34.3%, P<0.001). Postoperative dysphagia was found to be a significant independent risk factor for extended LOS on multivariate analysis, with an odds ratio of 5.37 (95% confidence interval: 4.09, 7.05, P<0.001).

CONCLUSION

Patients experiencing postoperative dysphagia were found to have significantly longer hospital LOS, higher total cost of admission, and increased nonroutine discharge when compared with the patients who did not.

LEVEL OF EVIDENCE

Level III.

Clinical outcomes and revision rates following four-level anterior cervical discectomy and fusion

Studies on outcomes after four-level anterior cervical discectomy and fusion (ACDF) are limited in the literature. The purpose of this study was to report on clinical outcomes and revision rates following four-level ACDF. Patients operated with four-level ACDF were identified in a prospectively accrued single institution database. Outcome scores included the Neck Disability Index (NDI) and Visual Analogue Scale (VAS) for neck and arm pain. Reoperation rates were determined. Any complications were identified from a review of the medical records. Twenty-eight patients with a minimum of 12 months follow up were included in the analysis. The mean age at surgery was 58.5 years. The median radiographic follow up time was 23 (IQR = 16–31.25) months. Cervical lordosis was significantly improved postoperatively (− 1 to − 13, p < 0.001). At the median 24 (IQR = 17.75–39.50) months clinical follow up time, there was a significant improvement in the NDI (38 to 28, p = 0.046) and VAS for neck pain scores (5.1 to 3, p = 0.012). The most common perioperative complication was transient dysphagia (32%) followed by hoarseness (14%). Four (14%) patients required revision surgery at a median 11.5 (IQR = 2–51) months postoperatively. The results of this study indicate that patients who undergo four-level ACDF have a significant improvement in clinical outcomes at median 24 months follow up. Stand-alone four-level ACDF is a valid option for the management of complex cervical degenerative conditions.

Anterior Cervical Discectomy and Fusion: A Hidden Etiology of Obstructive Sleep Apnea

Obstructive Sleep Apnea (OSA), a common variant of sleep-disordered breathing, is characterized by repeated complete or partial collapse of upper airways during sleep, leading to oxyhemoglobin desaturations. The obstruction may be iatrogenically induced in patients undergoing Anterior Cervical Discectomy and Fusion (ACDF). Damage to the pharyngeal plexus during the procedure may predispose to a new collapse of the upper airway, and the placement of the hardware for the fusion may lead to further narrowing of the upper airway. Literature does not exist associating this possible etiology prospectively. The association of ACDF and OSA has only been retrospectively documented by Guiilleminault and associates. We are reporting a case of a 49-year-old female who was evaluated pre and post surgery and established the evidence of worsening OSA in a patient who underwent ACDF.

Prospective comparison of dysphagia following anterior cervical discectomy and fusion (ACDF) with and without rhBMP-2

BACKGROUND CONTEXT

Previous studies have called into question the safety of using rhBMP-2 in anterior cervical fusion due to the possibility of airway compromise and dysphagia. A retrospective chart review identified a significant increase in the severity of dysphagia after II-level ACDF with rhBMP-2 compared to patients who did not receive rhBMP-2. To date, this topic has not been studied prospectively.

PURPOSE

Compare the incidence of dysphagia following anterior cervical discectomy and fusion (ACDF) when recombinant human bone morphogenetic protein-2 (rhBMP-2) is used with allograft compared to allograft alone.

STUDY DESIGN

Prospective cohort study.

PATIENT SAMPLE

A total of 114 patients completed a baseline SWAL-QOL survey and met the inclusion criteria. Thirty-nine patients underwent I- or II-level ACDF with allograft plus 0.5mg rhBMP-2/level. 44 patients underwent ACDF with allograft alone. Thirty-one patients undergoing a lumbar decompression were enrolled in a third cohort to control for dysphagia secondary to intubation.

OUTCOME MEASURES

The primary outcome measure was the 14-point SWAL-QOL dysphagia questionnaire. Other patient factors obtained from anesthesia and operative records were examined to evaluate their potential relationship to postoperative dysphagia.

METHODS

The 14-point SWAL-QOL questionnaire was administered at multiple time points (pre-op, post-op 7 days, 6 weeks, 6 months, and at least 1 year). Multivariable repeated-measures analysis was applied to data.

RESULTS

Baseline adjusted SWAL-QOL means 7 days after surgery were significantly different between the three study groups. These differences resolved by 6 weeks postoperative, beyond which point there were no differences. At final follow-up, baseline adjusted SWAL-QOL means at 1 year were similar for the three study groups.

CONCLUSIONS

This single-center study of anterior cervical surgery demonstrated that the addition of rhBMP-2 to an ACDF increased postoperative dysphagia at 7 days after surgery, but these patients recover to levels comparable to those who underwent ACDF without rhBMP-2 or lumbar surgery within 6 weeks.

Peak Voluntary Cough Flow and Oropharyngeal Dysphagia as Risk Factors for Pneumonia

Objective

To investigate the relationship between voluntary peak cough flow (PCF), oropharyngeal dysphagia, and pneumonia in patients who were evaluated with videofluoroscopic swallowing study (VFSS).

Methods

Patients who underwent both VFSS and PCF measurement on the same day were enrolled retrospectively (n=821). Pneumonia (n=138) and control (n=683) groups were assigned based on presence of pneumonia within 1 month from the date of VFSS assessment. In addition, sex, age (<65 and ≥65 years), preceding conditions, modified Barthel Index (MBI), Mini-Mental State Examination (MMSE), PCF value (<160, ≥160 and <270, and ≥270 L/min), and presence of aspiration/penetration on VFSS were reviewed.

Results

Pneumonia group was more likely to be male (n=108; 78.3%), ≥65 years (n=121; 87.7%), with neurodegenerative (n=25; 18.1%) or other miscellaneous diseases (n=50; 36.2%), and in poor functional level with lower value of MBI (39.1±26.59). However, MMSE was not significantly different in comparison to that of the control group. The pneumonia group was also more likely to have dysphagia (82.6%) and lower value of PCF (<160 L/min, 70.3%). In multivariable logistic regression analysis, male sex (odd ratio [OR]=6.62; 95% confidence interval [CI], 2.70–16.26), other miscellaneous diseases as preceding conditions (OR=2.52; 95% CI, 1.14–5.58), dysphagia (OR=3.82; 95% CI, 1.42–10.23), and PCF <160 L/min (OR=14.34; 95% CI, 1.84–111.60) were factors significantly related with pneumonia.

Conclusion

Impaired swallowing and coughing function showed an independent association with the development of pneumonia. Patients with PCF <160 L/min require more attention with lung care and should be encouraged with voluntary coughing strategy to prevent possible pulmonary complications.

Intraoperative Use of Topical Retropharyngeal Steroids for Dysphagia after Anterior Cervical Fusion: A Systematic Review and Meta-Analysis

Purpose

The anterior cervical approach is commonly used clinically for cervical spondylosis, but it also results in frequent postoperative dysphagia, which can increase the risk of complications and poor treatment satisfaction in severe cases. Intraoperative local application of retropharyngeal steroids has an impact on reducing the occurrence and severity of dysphagia; however, the results of current studies vary. The meta-analysis of this randomized trial was to evaluate the effectiveness and safety of intraoperative topical retropharyngeal steroids for the control of dysphagia after anterior cervical spine surgery.

Methods

Two authors searched electronic databases such as PubMed, MEDLINE, EMBASE, Cochrane Library, and Google Scholar, respectively. The search terms were “Dysphagia,” “Steroids,” “Anterior Cervical Discectomy and Fusion,” etc. A random effects model was used to conduct a meta-analysis based on deviance information criteria.

Results

A total of 8 studies were included in this meta-analysis after screening of 792 studies. Bazaz scores were not significantly different in the steroid group at one day postoperatively (P = 0.38), and dysphagia was significantly improved at 14 days postoperatively (95% CI: 0.15 to 0.64; P = 0.002). PSTSI was significantly improved one day (P = 0.03) and 14 days after surgery (P < 0.0001). VAS scores were all lower versus controls (P < 0.001).

Conclusion

Perioperative local retropharyngeal steroid administration as an adjunct to anterior cervical spine surgery reduces the incidence and severity of dysphagia compared with placebo control. However, future high-quality randomized controlled studies could incorporate nonsubjective dysphagia measures and long-term follow-up on the occurrence of associated complications or other side effects.

Swallowing rehabilitation following spinal injury: A case series

Context/objective: Swallowing difficulties (dysphagia) are well recognized after spinal injury. There are no published rehabilitation efficacy studies to date. This study explored viability and outcomes of swallowing rehabilitation programs for four patients with persisting dysphagia.Design: Prospective, quantitative experimental longitudinal case series.Setting: Spinal rehabilitation unit or patients' homes.Interventions: Four patients engaged in a 6-week (3×weekly) individualized progressive rehabilitation program.Outcome measures: Objective videofluoroscopic measures of timing and displacement and a validated self-reported questionnaire - the Eating Assessment Tool (EAT-10) were taken pre-therapy, immediately post-therapy and EAT-10 was repeated at 3 months. Feeling and fatigue scale scores were taken before and after each therapy session.Results: Patients (63, 67 yr, 67 yr, 76 yr; 3 male) had varying spinal diagnoses (2 traumatic, all involving the C-spine) and length of dysphagia (6 weeks, 6 weeks, 12 weeks, 10 yr). Common physiological impairments across all patients were: reduced maximum hyoid displacement, reduced pharyngeal constriction and reduced pharyngoesophageal segment maximum opening. Therapy programs were well received with 100% compliance. Participants made quantitative improvements in their videofluoroscopic measures of timing and displacement. Three out of four participants were able to have their percutaneous endoscopic gastrostomies (PEG) removed. EAT-10 scores significantly improved for all patients (P < .001). Poor upper limb function and restricted neck flexion prohibited some exercises.Conclusions: For many patients following spinal injury, dysphagia resolves during the acute phase of post-surgery recovery. For some, significant pharyngeal impairments persist. This case series demonstrates potential to regain functional swallowing following a 6-week tailored rehabilitation program. High-quality research exploring efficacy of rehabilitation programs are warranted.

Effect of Single-Dose Preemptive Systemic Dexamethasone on Postoperative Dysphagia and Odynophagia Following Anterior Cervical Spine Surgery: A Double-Blinded, Prospective, Randomized Controlled Trial

Background

The efficacy of preoperative dexamethasone in anterior cervical discectomy and fusion (ACDF) to reduce dysphagia and odynophagia remains controversial. This study evaluated the effect of a single dose of intravenous dexamethasone given as preemptive analgesia in the ACDF procedure.

Methods

A total of 64 patients aged 18 years or over were randomized into two groups. The experimental group received dexamethasone 10 mg intravenously before surgery for 60 minutes, and the control group received normal saline. One surgeon operated on all patients. The Bazaz score and visual analog scale (VAS) for odynophagia were measured at 0 hour, 24 hours, 48 hours, 72 hours, and 2 weeks postoperatively. Prevertebral soft-tissue swelling (PSTS) and the modified Japanese orthopedic association (mJOA) score were measured preoperatively and 2 weeks postoperatively.

Results

The Bazaz scores at 0, 24, 48, and 72 hours after operation were significantly lower in the dexamethasone group than in the placebo group (p < 0.001, p < 0.001, p < 0.001, and p = 0.004, respectively). The VAS scores of the dexamethasone group were significantly lower than those of the placebo group at 0, 24, 48, and 72 hours after surgery (all p < 0.001), but there was no significant reduction in the Bazaz score and VAS score at 2 weeks postoperatively. There was no difference in PSTS and mJOA preoperatively and 2 weeks postoperatively.

Conclusions

A single dose of intravenous dexamethasone used preoperatively in single-level and multilevel ACDF can significantly improve symptoms of dysphagia and odynophagia early on postoperatively.

Risk Factors for Dysphagia after Anterior Cervical Discectomy and Fusion with the Zero-P implant system: A Study with Minimum of 2 Years Follow-up

OBJECTIVE

To evaluate the risk factors for dysphagia after anterior cervical discectomy and fusion (ACDF) with the Zero-P Implant System by multidimensional analysis and investigated the predictive values of these risk factors for dysphagia.

METHODS

A retrospective analysis of 260 patients who underwent ACDF with the Zero-P Implant System and had at least 2 year of follow-up were performed. All patients were divided into a non-dysphagia group and a dysphagia group. Sex, age, body mass index (BMI), intraoperative time, estimated blood loss, diabetes mellitus, hypertension, smoking, alcohol consumption, prevertebral soft-tissue thickness, the levels of surgery, O-C₂ angle, C_2-7 angle, T₁ slope and segmental angle were analyzed. The Modified Japanese Orthopaedic Association (JOA) scoring system was used to determine functional status. NDI was used to evaluate neck pain and disability. The Bazaz grading system was chosen to evaluate dysphagia after surgery. Postoperative cerebrospinal fluid (CSF) leakage, infection, and dysphagia were recorded in both groups. An independent t-test was used to compare quantitative variables, a chi-square test was used to compare qualitative data between the two groups. To eliminate the influence of confounding factors, logistic regression was performed for multifactor regression of factors. The results were regarded as significant when the P-values were less than 0.05 in this study.

RESULTS

In total, the non-dysphagia group comprised 70 patients and the dysphagia group comprised 190 patients, with an average age of 58.33 ± 4.68 years (ranging, 42-82 years). These patients were followed up for 28.5 ± 3.5 months (range, 24-32 months). For clinical outcomes, both groups demonstrated significant improvement in the NDI and JOA scores (P < 0.001). According to the Bazaz dysphagia grading system, mild, moderate, and severe dysphagia were found in 50, 17, and 3 patients, respectively. In total, 37.1% (n = 26) had resolved by 3 month, 38.6% (n = 27) by 6 months, and 17.1% (n = 12) by 12 months. Chi-square test results indicated that number of operated levels, operation time dT1 slope, dO-C₂ angle, dC_2-7 angle, segmental angle and dPSTT were associated with a high incidence of dysphagia. Multivariate logistic regression analysis showed that number of operated levels, operation time, dC_2-7 angle and dPSTT were significantly associated with postoperative dysphagia.

CONCLUSIONS

More operated levels, more operation time, more dC_2-7 angle and dPSTT were the risk factors for postoperative dysphagia. In additional, sufficient preoperative preparation, evaluation combined with proficient and precise surgical treatment were suggested to reduce the incidence of postoperative dysphagia when ACDF was performed.

Characterization of dysphagia following anterior cervical spine surgery

BACKGROUND

Post-operative dysphagia is one of the most common complications of anterior cervical spine surgery (ACSS).

OBJECTIVE

Examine post-operative structural and physiologic swallowing changes in patients with dysphagia following ACSS as compared with healthy age and gender matched controls.

METHODS

Videofluoroscopic swallow studies of adults with dysphagia after ACSS were retrospectively reviewed. Seventy-five patients were divided into early (≤2 months) and late (> 2 months) post-surgical groups. Modified Barium Swallow Impairment Profile (MBSImP), Penetration-Aspiration Scale (PAS) scores, and pharyngeal wall thickness (PWT) metrics were compared.

RESULTS

Significant differences were identified for all parameters between the control and early post-operative group. MBSImP Pharyngeal Total (PT) scores were greater in the early group (Interquartile Range (IQR) = 9-14, median = 12) versus controls (4-7, 5, P < 0.001) and late group (0.75-7.25, 2, P < 0.001). The early group had significantly higher maximum PAS scores (IQR = 3-8, median = 7) than both the control group (1-2, 1, P < 0.001) and late post-operative group (1-1.25, 1, P < 0.001). PWT was significantly greater in the early (IQR = 11.12-17.33 mm, median = 14.32 mm) and late groups (5.31-13.01, 9.15 mm) than controls (3.81-5.41, 4.68 mm, P < 0.001).

CONCLUSION

Dysphagic complaints can persist more than two months following ACSS, but often do not correlate with validated physiologic swallowing dysfunction on VFSS. Future studies should focus on applications of newer technology to elucidate relevant deficits.

DISHphagia – A Riddle Unwrapped a Clinical Case with Literature Review

Diffuse idiopathic skeletal hyperostosis (DISH) is a common but underdiagnosed systemic skeletal disease. It is characterized by calcifications affecting mainly the spinal anterior longitudinal ligament. In the majority of cases, the patients are asymptomatic, but cervical osteophytes can sometimes cause hoarseness, dysphagia (DISHphagia) and even dyspnea.

Case description: A 61-year-old man was admitted to our department with complaints of difficulty in swallowing and weight loss. Dysphagia had been increasing gradually for nine months. Barium swallow esophagram revealed asymmetric swallowing with expansion above the upper esophageal sphincter without other abnormalities. The extension was confirmed by esophago-gastro-duodenoscopy (EGD). Furthermore, CT scan of the thorax clearly demonstrated degenerative changes of the cervical and thoracic region, extensive ossification of the anterior longitudinal ligament, and osteophytes from C2-C7 with a forward displacement of the esophagus by 14 mm. The so-called “wax dripping down the candle” phenomenon was as well observed.

Conclusion: DISH is a systematic, musculo-skeletal disease of older adults with unknown etiology. Dysphagia is the most common symptom of the disease and might be caused by osteophytes of the cervical region. We presented a case of DISH with a rare localization of the osteophytes in the cervical region C2-C7. Due to the increasing incidence of the Forestier’s syndrome and its associated “DISHphagia”, the gastroenterologist should increase the awareness of this underestimated disease and improve the diagnostic approach.

Structural Allograft Versus Synthetic Interbody Cage for Anterior Cervical Discectomy and Fusion: A Comparison of 1-Year Outcomes From a National Database

STUDY DESIGN

Observational cohort study.

OBJECTIVE

To compare 1-year perioperative complications between structural allograft (SA) and synthetic cage (SC) for anterior cervical discectomy and fusion (ACDF) using a national database.

METHODS

The TriNetX Research Network was retrospectively queried. Patients undergoing initial single or multilevel ACDF surgery between October 1, 2015 and April 30, 2019 were propensity score matched based on age and comorbidities. The rates of 1-year revision ACDF surgery and reported diagnoses of pseudoarthrosis, surgical site infection (SSI), and dysphagia were compared between structural allograft and synthetic cage techniques.

RESULTS

A comparison of 1-year outcomes between propensity score matched cohorts was conducted on 3056 patients undergoing single-level ACDF and 3510 patients undergoing multilevel ACDF. In single-level ACDF patients, there was no difference in 1-year revision ACDF surgery (P = .573), reported diagnoses of pseudoarthrosis (P = .413), SSI (P = .620), or dysphagia (P = .529) between SA and SC groups. In multilevel ACDF patients, there was a higher rate of revision surgery (SA 3.8% vs SC 7.3%, odds ratio = 1.982, P < .001) in the SC group, and a higher rate of dysphagia in the SA group (SA 15.9% vs SC 12.9%).

CONCLUSION

While the overall revision and complication rate for single-level ACDF remains low despite interbody graft selection, SC implant selection may result in higher rates of revision surgery in multilevel procedures despite yielding lower rates of dysphagia. Further prospective study is warranted.

Postoperative Dysphagia Aortica: Comparison with Other Dysphagia

Dysphagia can be classified as oropharyngeal or esophageal, and functional or structural deficits of the esophagus can cause esophageal dysphagia. Dysphagia aortica (DA) is defined as dysphagia caused by extrinsic compression of the esophagus by the aorta. The aim of this study was to investigate the characteristics of DA by comparing the findings of videofluoroscopic swallowing studies (VFSS) with those of other dysphagia. Sixty-seven patients with postoperative dysphagia aortica (PDA), dysphagia after brainstem infarction (DBI), dysphagia after anterior cervical discectomy and fusion (DACDF), and subjective swallowing difficulty (SSD) without penetration and/or aspiration, who had undergone VFSS incorporating tests using 5 ml of thin and thick liquids, were included. The clinical data were collected retrospectively. The penetration-aspiration scale, functional dysphagia scale (FDS), esophageal transit time (ETT), and aortic lesion parameters (maximal diameter and distance between the lesion and the apex of the aortic arch) were assessed. The patients with PDA had higher FDS scores than the patients with SSD and lower scores than the patients with DBI did on thin liquids, while the FDS scores on thick liquids were lower in the patients with PDA than in those with DBI or DACDF. The patients with PDA had longer ETT than the other three groups. No correlation was found between the aortic lesion parameters and the VFSS findings. Although PDA has some oropharyngeal symptoms, the esophageal phase was affected mainly by PDA. After an operation on the aorta, VFSS should be considered before resuming oral feeding.

Characterizing dysphagia after spinal surgery

Context/Objective: Dysphagia after spinal surgery is well recognised. Characteristics of post-operative dysphagia are not well defined. This study explored severity, longevity, and physiological characteristics of dysphagia.Design: Prospective, observational study.Setting: Tertiary urban hospital.Participants: Two-hundred fifty patients consecutively receiving spinal surgery.Interventions: Demographic and clinical information were collected. Flexible endoscopic evaluation of swallowing (FEES) and videofluoroscopic study of swallowing (VFSS) recordings were analyzed.Outcomes Measures: FEES recordings were analyzed using three validated symptom scales. VFSS recordings were analyzed using 10 objective digital measures of timing, displacement and symptoms.Results: Of 250 patients, 75 were referred for swallowing assessment. Sixty-two received FEES and 11 VFSS. Patients with anterior approach surgery for cervical level injuries represented 85% of referrals (n = 64). Secretion accumulation, aspiration and residue scores decreased significantly within 2 months for most patients. For those with persisting dysphagia, objective VFSS measures demonstrated significant impairments in pharyngeal constriction, hyoid displacement and pharyngoesophageal segment opening with corresponding residue and aspiration scores. By 6 months, all patients had returned to a regular diet except three patients following anterior cervical discectomy and fusion (ACDF) who remained nil by mouth with severe physiological impairments.Conclusions: A quarter of patients following spinal surgery present with dysphagia. For most, symptoms decrease significantly by 2 months and patients return to normal diets. Early screening of dysphagia is critical to avoid secondary complications and prolonged hospitalizations. For some, significant pharyngeal impairments persist and high-quality case series exploring efficacy of rehabilitation programmes are needed.

Prospective Randomized Controlled Trial to Study the Effect of Local Steroids in the Retropharyngeal Space After Anterior Cervical Discectomy and Fusion

STUDY DESIGN

Prospective randomized controlled trial.

OBJECTIVE

To study the effect of local steroids in the retropharyngeal space after anterior cervical discectomy and fusion (ACDF) in reducing prevertebral soft-tissue swelling (PSTS) and complications associated with it.

METHODS

A total of 50 consecutive patients operated with ACDF were double-blinded randomized into 2 groups: steroids (25) and control (25). Triamcinolone in collagen sponge was used in the steroid group and normal saline in gelatin sponge in the control group. Patients' lateral radiographs were taken on the immediate postoperative day; days 2, 4, and 6; at 2 weeks; and 2 and 6 months postoperatively. The PSTS ratio at C3 to C7 and PSTS index were calculated. Patients were clinically evaluated using the Visual Analogue Scale (VAS) score for odynophagia and radiating pain, modified Japanese Orthopedic Association Score (mJOA), and Neck Disability Index (NDI).

RESULTS

PSTS showed a significant reduction in the steroid group as compared with the control group on the immediate postoperative day; days 2, 4, and 6; and at 2 weeks. However, at 2 and 6 months, PSTS remained the same. VAS score for odynophagia also showed a significant difference between the 2 groups on the immediate postoperative day; days 2, 4, and 6; and 2 weeks postoperatively, with no significant difference at the 2- and 6-month follow-up. mJOA and NDI showed no significant difference between the 2 groups at the 2- and 6-month follow-up.

CONCLUSION

Use of retropharyngeal steroids helps in reducing the postoperative odynophagia on a short-term basis without any complication.

Does Local Steroid Reduce Dysphagia After Cervical Disc Replacement? A Prospective, Randomized, Placebo-controlled, Double-blinded Study

STUDY DESIGN

A prospective, randomized, placebo-controlled, double-blinded study.

OBJECTIVE

To examine the effect of intraoperatively administered local Depo-Medrol on the incidence and severity of postoperative dysphagia in patients undergoing cervical disk replacement (CDR) surgery.

SUMMARY OF BACKGROUND DATA

Dysphagia is often reported as an adverse event after anterior cervical surgeries. One method for reducing the incidence of postoperative dysphagia in patients undergoing anterior cervical discectomy and fusion surgeries is the intraoperative application of topical corticosteroids to the retroesophageal space. There have been no studies examining the effect of local steroids on dysphagia after CDR surgery.

MATERIALS AND METHODS

Seventy-three patients underwent CDR surgery by a single surgeon at a single institution. A 1 cm ×3 cm ×3 mm gel foam collagen sponge was saturated by the nurse with either saline (1 cc) or Depo-Medrol (40 mg/1 cc) based on randomization protocol. The sponge was placed ventral to the cervical disk implant in the retroesophageal space. Study follow-up occurred on postoperative day 1, 4, 7, 14 and postoperative month 1, 2, and 3. Dysphagia outcomes were classified using the Bazaz Dysphagia Score and Eating Assessment Tool 10.

RESULTS

The steroid group, compared with the control group, had significantly reduced incidence of dysphagia (50% vs. 75%; P=0.0427) and severe dysphagia (12% vs. 36% Bazaz score, P=0.0253; 18% vs. 42% Eating Assessment Tool 10, P=0.0378) at POD4. There was no significant long-term difference in rates of dysphagia between the control and the steroid group.

CONCLUSIONS

This study provides level 1 evidence that the use of intraoperative locally administered Depo-Medrol significantly reduces the incidence and severity of dysphagia within the first week after CDR surgery. The use of local steroid may provide patients undergoing CDR surgery with a more pleasant early recovery experience with respect to dysphagia.