Living with Dysphagia in the Community: Caregivers "do whatever it takes."

The psychological and psychosocial impacts of dysphagia on patients are well documented, however, caregiver perspectives have received limited attention and findings have been predominantly in the head and neck cancer population. The aim of this study was to understand the experience of supporting a person with dysphagia of varying aetiologies in the community from the caregiver perspective. Using a qualitative descriptive approach grounded in phenomenology, caregivers of a person with dysphagia living at home were interviewed (n = 15). Thematic analysis revealed an overarching theme of "You do whatever it takes," describing the caregiver experience of supporting a family member/friend with dysphagia at home. This theme was underpinned by three subthemes where caregivers described (1) being a caregiver; (2) support networks; and (3) practicalities of living with dysphagia. Caregivers voiced a range of pertinent issues experienced when caring for a family member/friend with dysphagia including how personal attributes and life experience impact the caregiver role. Demonstrated through the practical and emotional supports caregivers provided, it was apparent they are instrumental in supporting a family member/friend with dysphagia to live at home and in the community successfully. Through understanding the caregiver experience, health professionals will be in a better position to involve and support caregivers who play a vital role in those living with dysphagia in the community. Incorporating caregivers as direct recipients of dysphagia services will ensure the practical and psychosocial needs of caregivers are addressed, enabling optimal care for people with dysphagia living at home.

Understanding Dysphagia Care in the Community Setting.

Factors including health policy reform and the aging population are increasing demand for quality healthcare in the community. People with dysphagia are supported by speech-language pathologists (SLPs) in hospital and community settings; however, little is known about the nature of dysphagia services offered by SLPs in the community. The aim of this study was to investigate SLP services and practices provided to community-based adults with dysphagia. A national cohort (n = 144) of SLPs working with community-based clients with dysphagia completed an online survey. Results revealed that clients with neurological conditions comprised the largest proportion of the caseload. Primary referral sources were family doctors (42.4%) or other health professionals (37.5%), with low rates of self-referral. Services were primarily delivered via individual sessions (84.1%), usually within the client's home (80% saw clients at home). While many clinicians were using both clinical and instrumental assessments, half had to refer clients to the other services to access instrumental assessment. Most provided assessment and rehabilitation services, though a few (28.5%) reported using formal outcome or quality-of-life measures. Only 43.8% referred or encouraged clients or caregivers to access support or social groups and a few SLPs incorporated social participation or client well-being aspects in treatment. Speech-language pathology (SLP) practices in the community appear similar to what occurs in the acute setting, which are inherently biomedical. This may not be optimal care for clients with dysphagia who live at home and their caregivers. Further exploration about what clients and caregivers want from community-based SLP services is warranted.

Dysphagia care for adults in the community setting commands a different approach: perspectives of speech-language therapists.

BACKGROUND: Descriptions of community-based speech-language therapy (SLT) dysphagia practices and services are underrepresented in the research literature, despite the prevalence of dysphagia in the community. Owing to a globally ageing population and government drives to support people to remain living at home rather than in hospital or aged care, there is a growing need for SLT services to be responsive to the needs of clients living at home in the community, referred to in this study as 'community-based clients'. Exploration of current SLT services and dysphagia care practices for this population may identify ways services can be designed and enhanced to better meet the needs of clients and carers. AIMS: To explore the nature (i.e., characteristics) of dysphagia services and SLT clinical practices for adults with dysphagia living at home in the community. METHODS & PROCEDURES: Using a qualitative descriptive approach positioned within an explanatory sequential mixed methods design, this study explored SLT services and practices for adults with dysphagia living in the community to explain further and elaborate on findings from an earlier quantitative study. A total of 15 SLTs working with community-based clients with dysphagia were recruited using purposive representative sampling. Content analysis was used to explore the data. OUTCOMES & RESULTS: The overarching theme of community commands a different approach and was illustrated by three subthemes that highlighted how and why a different approach to dysphagia care in the community setting was necessary: (1) skills and mindset require adaptation in the community context; (2) values and approaches are different in the community context; and (3) organizational influences impact service delivery in the community context. From the data, it is apparent that the work undertaken in the community setting differs from dysphagia care in other settings and requires adapted SLT skills, values and approaches that encompass holistic care, client autonomy and carer engagement. SLT practices are also informed by organizational influences such as policies and resourcing, which in some services were enablers, while for others these presented challenges. CONCLUSIONS & IMPLICATIONS: Community-based SLT services must continue to foster flexible, responsive practices by SLTs to ensure the needs of clients and carers are met now and in future.

Speaking valves in tracheostomised ICU patients weaning off mechanical ventilation--do they facilitate lung recruitment?

BACKGROUND: Patients who require positive pressure ventilation through a tracheostomy are unable to phonate due to the inflated tracheostomy cuff. Whilst a speaking valve (SV) can be used on a tracheostomy tube, its use in ventilated ICU patients has been inhibited by concerns regarding potential deleterious effects to recovering lungs. The objective of this study was to assess end expiratory lung impedance (EELI) and standard bedside respiratory parameters before, during and after SV use in tracheostomised patients weaning from mechanical ventilation. METHODS: A prospective observational study was conducted in a cardio-thoracic adult ICU. 20 consecutive tracheostomised patients weaning from mechanical ventilation and using a SV were recruited. Electrical Impedance Tomography (EIT) was used to monitor patients' EELI. Changes in lung impedance and standard bedside respiratory data were analysed pre, during and post SV use. RESULTS: Use of in-line SVs resulted in significant increase of EELI. This effect grew and was maintained for at least 15 minutes after removal of the SV (p < 0.001). EtCO2 showed a significant drop during SV use (p = 0.01) whilst SpO2 remained unchanged. Respiratory rate (RR (breaths per minute)) decreased whilst the SV was in situ (p <0.001), and heart rate (HR (beats per minute)) was unchanged. All results were similar regardless of the patients' respiratory requirements at time of recruitment. CONCLUSIONS: In this cohort of critically ill ventilated patients, SVs did not cause derecruitment of the lungs when used in the ventilator weaning period. Deflating the tracheostomy cuff and restoring the airflow via the upper airway with a one-way valve may facilitate lung recruitment during and after SV use, as indicated by increased EELI. TRIAL REGISTRATION: Anna-Liisa Sutt, Australian New Zealand Clinical Trials Registry (ANZCTR). ACTRN: ACTRN12615000589583. 4/6/2015.

Impact of voice and communication deficits for individuals with cervical spinal cord injury living in the community.

BACKGROUND: Post-spinal cord injury (SCI), individuals may exhibit mild to moderate impairments in aspects of speech influenced by impaired respiratory support. However, limited research has been conducted into the impact of these impairments on activity and participation when living in the community. AIMS: To examine the nature and extent of voice and communication function in a group of individuals with cervical SCI living in the community, and to explore participant perceptions of the impact of these deficits on levels of activity and participation. METHODS & PROCEDURES: Participants included 14 individuals who had sustained a SCI above C8 level and had returned to living in the community. All completed a series of speech and voice assessments, the Voice Handicap Index, the Australian Therapy Outcome Measures Voice scale, four voice perception questions, and the General Short Form of the Communicative Participation Item Bank. OUTCOMES & RESULTS: As a group, participants were found to have reduced vocal intensity and phonatory duration. Vocal quality was mildly altered in 93% and pitch control, breath support for speech, speech rate and phrase length impacted in one-quarter or more of the group. All reported impacts, though three individuals reported that their impairments had more extensive impact on communication in daily life. CONCLUSIONS & IMPLICATIONS: Individuals post-SCI experience mild speech and voice deficits that can have negative impacts on functional communication. The monitoring of communication function may help to identify those individuals who could benefit from additional support and intervention on return to community life.

Clinical indicators associated with successful tracheostomy cuff deflation.

BACKGROUND: Tracheostomy cuff deflation is a necessary stage of the decannulation pathway, yet the optimal clinical indicators to guide successful cuff deflation are unknown. OBJECTIVES: The study aims were to identify (1) the proportion of patients tolerating continuous cuff deflation at first attempt; (2) the clinical observations associated with cuff deflation success or failure, including volume of above cuff secretions and (3) the predictive capacity of these observations within a heterogeneous cohort. METHODS: A retrospective review of 113 acutely tracheostomised patients with a subglottic suction tube in situ was conducted. RESULTS: Ninety-five percent of patients (n=107) achieved continuous cuff deflation on the first attempt. The clinical observations recorded as present in the 24h preceding cuff deflation included: (1) medical stability, (2) respiratory stability, (3) fraction of inspired oxygen ≤0.4, (4) tracheal suction ≤1-2 hourly, (5) sputum thin and easy to suction, (6) sputum clear or white, (7) ≥moderate cough strength, (8) above cuff secretions ≤1ml per hour and (9) alertness≥eyes open to voice. Using the presence of all 9 indicators as predictors of successful cuff deflation tolerance, specificity and positive predictive value were 100%, although sensitivity was only 77% and negative predictive value 19%. Refinement to a set of 3 clinically driven criteria (medical and respiratory stability, above cuff secretions ≤1ml/h) provided high specificity (100%), sensitivity (95%), positive predictive value (100%) and an improved negative predictive value (55%). CONCLUSIONS: Key criteria can help guide clinical decision-making on patient readiness for cuff deflation.

Impact of an abdominal binder on speech outcomes in people with tetraplegic spinal cord injury: perceptual and acoustic measures.

BACKGROUND: An abdominal binder (AB) is routinely used for patients who have suffered a spinal cord injury (SCI) resulting in tetraplegia. It is thought to restore abdominal pressure and consequently improve breathing capacity and reduce postural hypotension in patients who do not have functioning abdominal muscles. OBJECTIVE: To examine the early effects of an AB on respiratory and speech outcomes. METHODS: Thirteen individuals who sustained an acute motor complete SCI between C3 and T1 were assessed after a 6-week trial of using an elasticized AB from the time of first mobilizing in an upright wheelchair. Assessments were made using spirometry and perceptual and acoustics speech measures based on sustained phonation, sentence recitation, and passage reading. RESULTS: Significant improvements were found in the AB-on condition for 3 of 5 respiratory parameters (vital capacity, forced vital capacity, and forced expiratory volume in 1 second). Predominantly mild voice and speech dysfunction were noted in participants. No significant difference was found for any of the acoustic and perceptual speech parameters (maximum phonation time, vocal intensity for sentence recitation, perceptual speech characteristics, or vocal quality) between the AB conditions. CONCLUSIONS: Despite the finding that an AB results in significant improvements in respiratory function for individuals with tetraplegic SCI, the current study did not provide evidence that an AB improves speech production.

Abdominal binder improves lung volumes and voice in people with tetraplegic spinal cord injury.

OBJECTIVE: To investigate the effect of an elasticated abdominal binder on respiratory, voice, and blood pressure outcomes for people with a motor complete acute tetraplegia during the first year after injury. DESIGN: Randomized crossover study. SETTING: Large university-affiliated referral hospital. PARTICIPANTS: Consenting participants (N=14, 13 men and 1 woman) with recent, motor complete, C3-T1 spinal cord injury. INTERVENTIONS: Abdominal binder on/off with participant seated in upright wheelchair, with 3 repeated measures at 6 weeks, 3 months, and 6 months after commencing daily use of an upright wheelchair. MAIN OUTCOME MEASURES: Forced vital capacity, forced expiratory volume in 1 second, peak expiratory flow, maximal inspiratory pressure, and maximal expiratory pressure were measured. Mean arterial pressure, maximum sustained vowel time, and sound pressure level were also measured. RESULTS: Overall, an abdominal binder resulted in a statistically significant improvement in forced vital capacity (weighted mean difference .34 L [95% confidence interval (CI) .10-.58], P=.005), forced expiratory volume in 1 second (.25 L [95% CI -.01 to .51], P=.05), peak expiratory flow (.81 L/s [95% CI .13-1.48], P=.02), maximal inspiratory pressure (7.40 cm H(2)O [95% CI 1.64-13.14], P=.01), and maximum sustained vowel time (3.75 s [95% CI .90-6.60], P=.01). There was no statistically significant improvement in maximal expiratory pressure (5.37 cm H(2)O [95% CI -1.15 to 11.90], P=.11), mean arterial pressure (4.41 mmHg [95% CI -6.15 to 14.97], P=.41), or sound pressure level (1.14 dB [95% CI -1.31 to 3.58], P=.36). CONCLUSIONS: An individually fitted abdominal binder significantly improved forced vital capacity, forced expiratory volume in 1 second, peak expiratory flow, maximal inspiratory pressure, and maximum sustained vowel time in people with newly acquired tetraplegia. Further study is needed into the effect of the long-term use of the abdominal binder on breathing mechanics, functional residual capacity, total lung capacity, and respiratory health.

Physiological characteristics of dysphagia following thermal burn injury.

The study aim was to document the acute physiological characteristics of swallowing impairment following thermal burn injury. A series of 19 participants admitted to a specialised burn centre with thermal burn injury were identified with suspected aspiration risk by a clinical swallow examination (CSE) conducted by a speech-language pathologist and referred to the study. Once medically stable, each then underwent more detailed assessment using both a CSE and fiberoptic evaluation of swallowing (FEES). FEES confirmed six individuals (32%) had no aspiration risk and were excluded from further analyses. Of the remaining 13, CSE confirmed that two had specific oral-phase deficits due to orofacial scarring and contractures, and all 13 had generalised oromotor weakness. FEES revealed numerous pharyngeal-phase deficits, with the major findings evident in greater than 50% being impaired secretion management, laryngotracheal edema, delayed swallow initiation, impaired sensation, inadequate movement of structures within the hypopharynx and larynx, and diffuse pharyngeal residue. Penetration and/or aspiration occurred in 83% (n = 10/12) of thin fluids trials, with a lack of response to the penetration/aspiration noted in 50% (n = 6/12 penetration aspiration events) of the cases. Most events occurred post swallow. Findings support the fact that individuals with dysphagia post thermal burn present with multiple risk factors for aspiration that appear predominantly related to generalised weakness and inefficiency and further impacted by edema and sensory impairments. Generalised oromotor weakness and orofacial contractures (when present) impact oral-stage swallow function. This study has identified a range of factors that may contribute to both oral- and pharyngeal-stage dysfunction in this clinical population and has highlighted the importance of using a combination of clinical and instrumental assessments to fully understand the influence of burn injury on oral intake and swallowing.

Communication Success and Speaking Valve Use in Intensive Care Patients Receiving Mechanical Ventilation.

BACKGROUND: Communication with patients receiving mechanical ventilation in an intensive care unit can be challenging. Once a patient is tracheostomized, a speaking valve may enable restoration of verbal communication. To date, no data are available on the effect of speaking valves on communication success in intensive care units. OBJECTIVE: The aim of this prospective cohort study was to measure communication success before and during speaking valve use for intensive care patients being weaned from mechanical ventilation, from both the nurses' and the patients' perspectives. METHODS: In a prospective cohort study, consecutive eligible patients and their nurses were asked to complete newly developed questionnaires on communication success before and while patients used a speaking valve (6 questions for patients, 5 questions for nurses, answers on a 10-point scale with 10 the best score). The Wilcoxon signed rank test was used to analyze score differences. RESULTS: For all questionnaire items, both patients (n = 25) and nursing staff (n = 52) reported significantly higher communication success during speaking valve use. Nurses understood moderately well that their patients were in pain (median [IQR], 5.8 [4.7-7.4]) even before speaking valve use. Most patients found it challenging to say something quickly even while using a speaking valve (6.9 [5.7-10.0]). Overall, speaking valve use markedly increased communication success. CONCLUSION: A speaking valve should be considered for patients with a tracheostomy as soon as possible to improve their communication success.

Client perspectives on living with dysphagia in the community.

PURPOSE: Literature to date describing the lived experience of dysphagia has predominantly focussed on the clinical populations of stroke and head and neck cancer. The current study aimed to understand the experience of people with dysphagia of varying aetiologies living at home in the community. METHOD: Using a qualitative descriptive approach grounded in phenomenology, individuals with dysphagia were interviewed (n = 15) about their experiences living with and managing dysphagia at home. RESULT: Thematic analysis revealed an overarching theme of "Journey of discovery - learning to live with dysphagia," which described the process of managing dysphagia at home. This theme was characterised by three subthemes: (1) The story of dysphagia; (2) Engaging with support networks; and (3) Limited community awareness of dysphagia. CONCLUSION: This study highlights a range of psychosocial impacts individuals with dysphagia living at home may experience. Participants described how managing other health conditions alongside dysphagia influenced their perspectives about dysphagia. speech-language pathologists must consider individual client health priorities and provide support for not just the physical but also the psychosocial needs of clients. The reduced profile of dysphagia in our communities continues to be an ongoing barrier for clients with dysphagia and their families.

Clinical utility of the combined use of the Canadian Occupational Performance Measure and Goal Attainment Scaling.

OBJECTIVE: We investigated the clinical utility of combined use of Goal Attainment Scaling (GAS) and the Canadian Occupational Performance Measure (COPM) to plan goals and measure progress in a community rehabilitation setting. METHOD: Fourteen participants with traumatic brain injury completed an outpatient, goal-directed 12-wk occupational therapy program; 53 goals were generated. Performance and satisfaction self-ratings and GAS ratings were collected before and after intervention. Self-awareness, motivation to change, and perceived client-centeredness measures were taken before intervention. RESULTS: Sensitivity to change was demonstrated by significant improvements after intervention for total performance self-ratings on the COPM and GAS Tscores. CONCLUSION: Combined use of these tools, although time consuming, resulted in goals that were perceived almost unanimously as client centered, despite most participants' having moderate or severe impairment in self-awareness. The process also enabled subjective and objective demonstration of goal achievement, thereby supporting the clinical utility and treatment validity of the combined use of these tools.

Experiences of communication changes following spinal cord injury: a qualitative analysis.

Purpose: Voice and communication changes can occur following cervical spinal cord injury due to dysfunction of the respiratory and phonatory subsystems. Few studies have explored the "lived experience" of communication changes post cervical spinal cord injury. Furthermore, the impacts of these changes on community activity/participation and requirements for psychosocial adjustment have not been well-elucidated. The current study explored the experience of communication changes in non-ventilated individuals following cervical spinal cord injury, using a biopsychosocial framework.Materials and Methods: Semi-structured interviews were conducted with 14 community-dwelling non-ventilated individuals with cervical spinal cord injury. Thematic analysis was undertaken using an inductive approach. Themes were subsequently coded against domains of the World Health Organization International Classification of Functioning Disability and Health model, using established linking rules.Results: Four main themes were identified: (1) how communication has changed; (2) difficulties getting the message across, (3) the multifactorial impact of communication changes on everyday life; and (4) strategies/support to adjust to communication changes. Communication changes had multifaceted effects on participants' functioning, and were represented equally across the Body Functions (12 codes), Activities/Participation (12 codes), and Environmental Factors (11 codes) domains of the model.Conclusions: Individuals with cervical spinal cord injury perceive and experience meaningful changes on communication function post-injury, with salient impacts to daily-living and social participation.IMPLICATIONS FOR REHABILITATIONAs a result of communication changes post-injury, individuals with cervical spinal cord injury experience several challenges across a variety of domains in daily lifeThe current study highlights the benefit of using a biopsychosocial framework, such as The International Classification of Functioning, Disability and Health (ICF), to consider the complex and diverse impact of communication changes on the functioning of individuals with cervical spinal cord injury, as well as the influence of environmental factors, on rehabilitation planningThe current data demonstrates the need for increased involvement of speech-language pathologists as core members of the multidisciplinary team, and for acute awareness by all health professionals of the potential impact of communication changes on rehabilitation and psychosocial adjustment in individuals with cervical spinal cord injury.

Qualitative exploration of a client-centered, goal-directed approach to community-based occupational therapy for adults with traumatic brain injury.

OBJECTIVES: We explored the clinical application of goal-directed therapy in community-based rehabilitation from the perspective of clients with traumatic brain injury (TBI), their significant others, and their treating occupational therapists. METHOD: Twelve people with TBI and their significant others completed an outpatient, goal-directed, 12-week occupational therapy program. Semistructured interviews with 12 participants, 10 significant others, and 3 occupational therapists involved in delivering the therapy programs explored their experiences of goal-directed therapy. RESULTS: Participants, their significant others, and therapists described goal-directed therapy positively, expressing satisfaction with progress made. CONCLUSION: Goals provide structure, which facilitates participation in rehabilitation despite the presence of barriers, including reduced motivation and impaired self-awareness. A therapist-facilitated, structured, goal-setting process in which the client, therapist, and significant others work in partnership can enhance the process of goal setting and goal-directed rehabilitation in a community rehabilitation context.

The transition from hospital to home for individuals with acquired brain injury: a literature review and research recommendations.

PURPOSE: To review the literature relating to the transition from hospital to home for individuals with acquired brain injury (ABI) and make recommendations concerning the future direction of transition-specific research. METHOD: Relevant research articles were identified through searching existing database systems and by reviewing the reference lists of identified articles. Only articles in which the results directly related to individuals with ABI from the time of discharge to 1 year post-discharge were included in the review. RESULTS/DISCUSSION: A total of 50 articles were identified as meeting the criteria for inclusion in the review. The methodological quality of included articles was evaluated using a set of specific criteria. The articles were classified into the following categories: (i) The perspectives of individuals with ABI and their caregivers; (ii) outcomes for individuals with ABI following transition; (iii) post-discharge services; and (iv) transitional living services/programmes. The majority of articles were based on samples of individuals with stroke, typically aged over 65 years. A common theme identified in the review was that the transition from hospital to home is typically perceived as an exciting yet difficult period for individuals and their families and as such, post-discharge support is critical. CONCLUSION: Further ABI transition-specific research is necessary in order to: (i) Develop a comprehensive theoretical framework of the transition phase; and (ii) facilitate both the validation of current intervention strategies and the development of innovative/tailored intervention approaches.

Delivering occupational therapy hand assessment and treatment sessions via telehealth.

Introduction Telehealth offers a solution to assist delivery of occupational therapy (OT) services for hand therapy in rural and remote locations. However, there is currently no evidence to validate this service model. The aim of this study was to examine the validity of clinical decisions made during hand therapy sessions conducted via telehealth compared to a traditional clinical model (TCM) assessment, and explore patient and clinician satisfaction. Methods Eighteen patients referred for hand therapy to a rural/remote hospital-based outpatient service were assessed simultaneously via telehealth and a TCM assessment. An allied health assistant supported data collection at the patient end. Hand function was assessed using a range of objective measures, subjective scales and patient reported information. Minimal level of percent exact agreement (PEA) between the telehealth OT (T-OT) and the TCM-OT was set at ≥80%. Results Level of agreement for all objective measures (dynamometer and pinch gauge reading, goniometer flexion and extension, circumference in millimetres) ranged between 82% and 100% PEA. High agreement (>80% PEA) was also obtained for judgements of scar and general limb function, exercise compliance, pain severity and sensitivity location, activities of daily living and global ratings of change (GROC) scores. There was 100% PEA for overall recommendations. Minimal technical issues were experienced. Patient and clinician satisfaction was high. Discussion Clinical decisions made via telehealth were comparable to the TCM and consumers were satisfied with telehealth as a service option. Telehealth offers the potential to improve access to hand therapy services for rural and remote patients.

Accuracy and confidence of allied health assistants administering the subjective global assessment on inpatients in a rural setting: a preliminary feasibility study.

AIM: Malnutrition has a significant impact on patient outcomes and duration of inpatient stay. However, conducting timely nutrition assessments can be challenging for rural dietitians. A solution could be for allied health assistants (AHAs) to assist with these assessments. The present study aimed to assess the accuracy and confidence of AHAs trained to conduct the subjective global assessment (SGA) compared with dietitians. METHODS: A non-inferiority study design was adopted. Forty-five adult inpatients admitted to a rural and remote health service were assessed independently by both a trained AHA and dietitian within 24 hours. The order of assessment was randomised, with the second assessor blind to the outcome of the initial SGA. Levels of agreement were examined using kappa and percent exact agreement (PEA; set a priori at ≥80%). Rater confidence after each assessment was assessed using a 10-point scale. RESULTS: Agreement for overall SGA ratings was high (kappa = 0.84; PEA 84.4%). PEA for individual sub-components of the SGA ranged from 66.4 to 86.7%. Where discrepancies were identified in global SGA ratings, AHAs provided a more severe rating of malnutrition than dietitians. AHAs reported significantly lower confidence than dietitians (t = 4.49, P < 0.001), although mean confidence for both groups was quite high (AHA=7.5, dietitians = 9.0). CONCLUSIONS: Trained AHAs completed the SGA with similar accuracy to dietitians. Using AHAs may help facilitate timely nutrition assessment in rural health services when a dietitian is not physically present. Further investigation is required to determine the benefits of incorporating this extended role into rural and remote health-care services.

Ventilation distribution and lung recruitment with speaking valve use in tracheostomised patient weaning from mechanical ventilation in intensive care.

PURPOSE: Speaking valves (SV) are used infrequently in tracheostomised ICU patients due to concerns regarding their putative effect on lung recruitment. A recent study in cardio-thoracic population demonstrated increased end-expiratory lung volumes during and post SV use without examining if the increase in end-expiratory lung impedance (EELI) resulted in alveolar recruitment or potential hyperinflation in discrete loci. MATERIALS AND METHODS: A secondary analysis of Electrical Impedance Tomography (EIT) data from a previous study was conducted. EELI distribution and tidal variation (TV) were assessed with a previously validated tool. A new tool was used to investigate ventilated surface area (VSA) and regional ventilation delay (RVD) as indicators of alveolar recruitment. RESULTS: The increase in EELI was found to be uniform with significant increase across all lung sections (p<0.001). TV showed an initial non-significant decrease (p=0.94) with subsequent increase significantly above baseline (p<0.001). VSA and RVD showed non-significant changes during and post SV use. CONCLUSIONS: These findings indicate that hyperinflation did not occur with SV use, which is supported by previously published data on respiratory parameters. These data along with obvious psychological benefits to patients are encouraging towards safe use of SVs in this critically ill cardio-thoracic patient population. TRIAL REGISTRATION: Anna-Liisa Sutt, Australian New Zealand Clinical Trials Registry (ANZCTR). ACTRN: ACTRN12615000589583. 4/6/2015.

Tracheostomy Tube Type and Inner Cannula Selection Impact Pressure and Resistance to Air Flow.

BACKGROUND: Advancements in tracheostomy tube design now provide clinicians with a range of options to facilitate communication for individuals receiving ventilator assistance through a cuffed tube. Little is known about the impact of these modern design features on resistance to air flow. METHODS: We undertook a bench model test to measure pressure-flow characteristics and resistance of a range of tubes of similar outer diameter, including those enabling subglottic suction and speech. A constant inspiratory ± expiratory air flow was generated at increasing flows up to 150 L/min through each tube (with or without optional, mandatory, or interchangeable inner cannula). Driving pressures were measured, and resistance was calculated (cm H2O/L/s). RESULTS: Pressures changed with increasing flow (P < .001) and tube type (P < .001), with differing patterns of pressure change according to the type of tube (P < .001) and direction of air flow. The single-lumen reference tube encountered the lowest inspiratory and expiratory pressures compared with all double-lumen tubes (P < .001); placement of an optional inner cannula increased bidirectional tube resistance by a factor of 3. For a tube with interchangeable inner cannulas, the type of cannula altered pressure and resistance differently (P < .001); the speech cannula in particular amplified pressure-flow changes and increased tube resistance by more than a factor of 4. CONCLUSIONS: Tracheostomy tube type and inner cannula selection imposed differing pressures and resistance to air flow during inspiration and expiration. These differences may be important when selecting airway equipment or when setting parameters for monitoring, particularly for patients receiving supported ventilation or during the weaning process.

Impact of nasogastric tubes on swallowing physiology in older, healthy subjects: A randomized controlled crossover trial.

BACKGROUND & AIMS: The presence of a nasogastric tube (NGT) affects swallowing physiology but not function in healthy young adults. The swallowing mechanism changes with increasing age, therefore the impact of a NGT on swallowing in elderly individuals is likely to be different but is not yet known. The aims of this study were to determine the effects of NGTs of different diameter on (1) airway penetration-aspiration, (2) pharyngeal residue, and (3) pharyngeal transit, in older healthy subjects. METHODS: Randomized controlled crossover design. Healthy elderly volunteers underwent 3 modified barium swallow studies in which multiple diet and fluid consistencies were swallowed under the following conditions: (A) no NGT (control), (B) fine bore NGT, and (C) wide bore NGT. The control condition was assessed first to establish baseline swallowing function, then NGT order was randomly allocated. RESULTS: Of the 15 volunteers (median age 65 years, range 60-81) complete data sets were obtained for 9 (4 with allocation order ABC; 5 with ACB). Wide bore NGT data could not be obtained for 6 volunteers mainly due to tube intolerance. The presence of a NGT was associated with: (i) an increase in airway penetration-aspiration (fine bore NGT with serial liquid swallows and puree) (p < 0.01); (ii) increased pharyngeal residue (p < 0.05) in the pyriform sinus (fine bore NGT with puree); and in the valleculae (both fine and wide bore NGT with soft solids); and (iii) an increase in pharyngeal transit duration regardless of consistency (p < 0.01), with longest swallowing durations with the widest tube. CONCLUSIONS: NGT presence increases airway penetration-aspiration, pharyngeal residue and prolongs transit through the pharynx in older healthy individuals. Consideration of NGT impact on swallowing during concurrent oral and enteral feeding is recommended, with further systematic investigation required in elderly patients recovering from critical illness. Clinical trial registry Australia & New Zealand Clinical Trials Registry (ACTRN12613000577718).