A randomized controlled study investigating the efficacy of electro-acupuncture and exercise-based swallowing rehabilitation for post-stroke dysphagia: Impacts on brainstem auditory evoked potentials and cerebral blood flow

BACKGROUND

Swallowing rehabilitation behavioral therapy and traditional Chinese acupuncture therapy are widely used in the treatment of post-stroke dysphagia (PSD). This study investigated the therapeutic effect of electro-acupuncture combined with exercise-based swallowing rehabilitation on PSD and its effect on brainstem auditory evoked potential (BAEP) and cerebral blood flow.

METHODS

The 120 PSD patients were divided into 2 groups (n = 60 each) by simple random grouping method, that is, an experimental and control group, receiving routine swallowing training, or additional intervention with electro-acupuncture at a frequency of 5 times/week. Data in swallowing function, BAEP, and cerebrovascular color Doppler ultrasound parameters were collected before treatment, as well as after treatment. An intergroup comparison was conducted using an independent sample t-test, and an intra-group comparison was conducted among different time points using a paired t-test. The data were analyzed using the SPSS Statistics 22.0 software; P < .05 was considered statistically significant.

RESULTS

The therapeutic effects were significantly better in the experimental group compared with the control group (P < .05). The standard swallowing function assessment scores were significantly lower in both groups after treatment (P < .05), and the score in the observation group was lower than in the control group (P < .05). The peak latency of BAEP waves III and IV, and the inter-peak latency between peaks III to V and I to V in the 2 groups changed significantly (P < .05). The peak systolic velocity (PSV), end-diastolic velocity (EDV), and mean velocity (MV) were significantly increased in both groups after treatment (P < .05). The pulsatility index decreased significantly in both groups (P < .05), and the PSV, EDV, and MV were higher in the experimental group than in the control group (P < .05).

CONCLUSION

Electro-acupuncture, combined with swallowing training in the treatment of Post-stroke Dysphagia, effectively improved cerebral microcirculation and conduction velocity, enhanced the motor function of swallowing muscles, and promoted the recovery of swallowing function.

Translation and transcultural adaptation of the Modified Swallowing Assessment (MSA) to Brazilian Portuguese

PURPOSE

To translate and adapt the Modified Swallowing Assessment (MSA) protocol for post-stroke patients into Brazilian Portuguese.

METHODS

This is an initial stage of the Brazilian Portuguese Modified Swallowing Assessment validation process. Translation was performed by two bilingual speech therapists and the translations synthesis evaluations by two external dysphagia experts. The synthesis version in the target language (Portuguese) was back-translated into the source language (English). After the synthesis of the translated versions, the instrument was applied to 22 post-stroke individuals.

RESULTS

Health professionals discussed all the results of the study stages considering the instrument concept and the target population. The semantic, linguistic and conceptual equivalences found in the translation and adaptation process were adequate, not requiring modifications since the items were consistent with the Brazilian culture.

CONCLUSION

MSA was translated and adapted to Brazilian Portuguese (MSA-BR). The translation and cross-cultural adaptation process included all the items of the original protocol and maintained the standards and characteristics of the instrument.

Effects of Swallowing Training and Follow-up on the Problems Associated with Dysphagia in Patients with Stroke

AIM

This study aimed to determine the effect of poststroke swallowing training and follow-up on swallowing function, nutritional status, and the development of problems associated with dysphagia.

METHOD

This study was designed as a single-group, pretest-posttest, quasi-experimental study and was conducted with 32 patients, who met the inclusion criteria for the study and were hospitalized with a diagnosis of acute stroke in the neurology clinic of a training and research hospital between June 2010 and September 2011. The patients were provided with swallowing training, followed up during meals, and given a training brochure. The Structured Information Form, the Standardized Mini Mental Test, the Barthel Index, and the Bedside Water Drinking Assessment Test were used to collect the data. Data were analyzed by the SPSS 16.0 program using descriptive and comparative statistical methods. TREND statement was followed for reporting.

RESULTS

It was determined that there was a statistically highly significant difference (p < .01) between the mean total score of the bedside water drinking assessment test after training compared with before the swallowing training, the duration of eating shortened (p < .01), and the amount of food consumed increased (p < .01) in the first follow-up. It was determined that the patients stayed in the hospital for an average of 9.75 ± 3.44 days; and aspiration occurred in 9.4% of them during this period. It was observed that patients who developed aspiration had prior lung problems.

CONCLUSION

It was observed that swallowing training decreased the duration of eating and increased the amount of food consumed in patients with stroke and resulting dysphagia. It was considered that the implementation of the training and the follow-up of swallowing function could be useful in preventing the development of problems.

Development and Validation of a Prognostic Tool for Direct Enteral Tube Insertion After Acute Stroke

Background and Purpose- We aimed to create a novel prognostic risk score to estimate outcomes after direct enteral tube placement in acute stroke. Methods- We used the Ontario Stroke Registry and linked databases to obtain clinical information on all patients with direct enteral tube insertion after ischemic stroke or intracerebral hemorrhage from July 1, 2003 to June 30, 2010 (derivation cohort) and July 1, 2010 to March 31, 2013 (validation cohort). We used multivariable regression to assign scores to predictor variables for 3 outcomes after tube placement: favorable outcome (discharge modified Rankin Scale score 0-3 and alive at 90 days), poor outcome (discharge modified Rankin Scale score 5 or death at 90 days), and 30-day mortality. Results- Variables associated with a favorable outcome were younger age, preadmission independence, ischemic stroke rather than intracerebral hemorrhage, lower stroke severity, and a shorter time between stroke and tube placement. Variables associated with a poor outcome were older age, preadmission dependence, atrial fibrillation, greater stroke severity, and tracheostomy. Age, preadmission dependence, atrial fibrillation, cancer, chronic obstructive pulmonary disease, and shorter time to tube placement were associated with increased 30-day mortality. Using these variables, we created an online calculator to facilitate estimation of individual patient risk of favorable and poor outcomes. C-statistic in the validation cohort was 0.82 for favorable outcome, 0.65 for poor outcome, and 0.62 for 30-day mortality, and calibration was adequate. Conclusions- We developed risk scores to estimate outcomes after direct enteral tube insertion for acute dysphagic stroke. This information may be useful in discussions with patients and families when there is prognostic uncertainty surrounding outcomes with direct enteral tube placement after stroke.

Evaluation of the Chinese version of the swallowing screen in stroke patients with dysphagia

OBJECTIVE

The purpose of this study was to validate a Chinese version of the modified Standardized Swallowing Assessment (SSA) instrument used by nurses in stroke patients with dysphagia and explore the feasibility of the simplified instrument.

MATERIALS AND METHODS

This study involved a cross-sectional design. Nurses independently applied the modified SSA to 127 patients with stroke before a complete dysphagia evaluation conducted by a speech-language pathologist. Factor analysis of eight dysphagia variables in the modified SSA was performed to evaluate construct validity. The accuracy of the screening instrument was assessed through receiver operating characteristic (ROC) analysis.

RESULTS

The comprehensive swallowing assessment revealed that 49.6% of the stroke patients had dysphagia. The modified SSA had an acceptable internal consistency coefficient. The inter-rater agreement between nurses using the modified SSA showed a Kappa coefficient of 0.509. All items had a communality loading of >0.5, and two factors accounted for 73.89% of the response variance. The area under the ROC curve was 0.79 (95% confidence interval: 0.71-0.87). The sensitivity and specificity derived for dysphagia detection were satisfactory according to the results obtained from the original 8-item and simplified 6-item scales (sensitivities = 82.50% and 81.00% and specificities = 59.40% and 64.10%, respectively; accuracy = 70.87% and 72.44%, respectively).

CONCLUSION

This preliminary study suggests that the modified SSA is a potentially reliable and valid nurse-administered screening instrument for dysphagia detection in patients with stroke.

Outcomes among patients with direct enteral vs nasogastric tube placement after acute stroke

OBJECTIVE

To compare complications, disability, and long-term mortality of patients who received direct enteral tube vs nasogastric tube feeding alone after acute stroke.

METHODS

We used the Ontario Stroke Registry to identify patients who received direct enteral tubes (DET; gastrostomy or jejunostomy) or temporary nasogastric tubes (NGT) alone during hospital stay after acute ischemic stroke or intracerebral hemorrhage from July 1, 2003, to March 31, 2013. We used propensity matching to compare groups from discharge and evaluated discharge disability, institutionalization, complications, and mortality, with follow-up over 2 years, and with cumulative incidence functions used to account for competing risks.

RESULTS

Among 1,448 patients with DET placement who survived until discharge, 1,421 were successfully matched to patients with NGT alone. Patients with DET had reduced risk of death within 30 days after discharge (9.7% vs 15.3%; hazard ratio [HR] 0.61, 95% confidence interval [CI] 0.49-0.75), but this difference was eliminated after matching on length of stay and discharge disability (HR 0.90, 95% CI 0.70-1.17). Patients with DET had higher rates of severe disability at discharge (modified Rankin Scale score 4-5; 89.6% vs 78.4%), discharge to long-term care (38.0% vs 16.1%), aspiration pneumonia (14.4% vs 5.1%) and other complications, and mortality at 2 years (41.1% vs 35.9%).

CONCLUSIONS

Patients with DET placement after acute stroke have more severe disability at discharge compared to those with NGT placement alone, and associated higher rates of institutionalization, medical complications, and long-term mortality. These findings may inform goals of care discussions and decisions regarding long-term tube feeding after acute stroke.

Investigação da queixa de disfagia em pacientes afásicos

OBJETIVOS: verificar a presença e evolução da queixa de deglutição em pacientes afásicos pós- AVE e, a partir do relato dos familiares em relação à melhora das manifestações, analisar se a ocorrência da afasia interferiu no prognóstico da disfagia. MÉTODO: 30 pacientes afásicos pós-AVE na fase crônica foram entrevistados e, juntamente com seus familiares, responderam a um questionário sobre a presença e a permanência de queixas de deglutição pós-AVE e aspectos relacionados, bem como melhoras ocorridas em relação aos quadros de disfagia e afasia. Para verificar se a disfagia parece ter interferido no prognóstico da afasia, comparou-se as curvas de Kaplan-Meier dos pacientes que referiram queixas de disfagia com os que não referiram. RESULTADOS: 48% dos pacientes tiveram queixas de dificuldades de deglutição pós-AVE. Destes, 93% apresentaram mudanças positivas (melhora parcial ou total do quadro). O tempo médio para que o paciente apresentasse qualquer tipo de mudança (espontânea ou não) foi de 76 dias. 60% referiu melhora total da disfagia, sendo que 47% foram submetidos à terapia fonoaudiológica. Em relação à afasia, 87% dos pacientes referiram melhora, apesar de nenhum paciente ter referido melhora total. 57% haviam sido expostos à terapia fonoaudiológica para a afasia. O tempo médio referido para que o paciente apresentasse qualquer tipo de mudança positiva nas manifestações foi de 183 dias. Não houve diferença significante na melhora da afasia entre o grupo com e sem queixa de deglutição. CONCLUSÕES: dos pacientes afásicos avaliados neste estudo, 48% apresentou queixa de disfagia. Verificou-se, a partir do relato dos familiares, que a ocorrência da afasia parece não ter interferido no prognóstico da disfagia.