A retrospective survey of outpatients with long-term tracheostomy

Linear versus Turbulent Airflow Tracheostomy Heat and Moisture Exchangers: A Crossover Study

OBJECTIVE

This study aimed to evaluate the impact of two tracheostomy heat and moisture exchangers (HMEs), namely the Shikani Oxygen HME™ (S-O2 HME, ball type, turbulent airflow) and Mallinckrodt Tracheolife II DAR HME (M-O2 HME; flapper type, linear airflow) on tracheobronchial mucosal health, oxygenation, humidification, and patient preference.

METHODS

A randomized cross-over study was conducted with HME-naïve long-term tracheostomy subjects at two academic medical centers. Bronchoscopy assessments of mucosal health were performed at baseline and day 5 of HME application, along with oxygen saturation (SpO2 ) and breathed air humidity at four oxygen flow rates (1, 2, 3, and 5 lpm). Patient preference was assessed on study conclusion.

RESULTS

Both HMEs were associated with improved mucosal inflammation and decreased mucus production (p < 0.0002), with greater improvements in the S-O2 HME group (p < 0.007). Both HMEs improved humidity concentration at each oxygen flow rate (p < 0.0001), without significant differences between groups. SpO2 was greater for the S-O2 HME versus the M-O2 HME across all measured oxygen flow rates (p = 0.003). At low oxygen flow rates (1 or 2 lpm), the SpO2 in the S-O2 HME group was similar to that of the M-O2 HME at higher oxygen flow rates (3 or 5 lpm; p = 0.6). Ninety percent of subjects preferred the S-O2 HME.

CONCLUSION

Tracheostomy HME uses correlated with improved indicators of tracheobronchial mucosal health, humidity, and oxygenation. The S-O2 HME outperformed the M-O2 HME with respect to tracheobronchial inflammation, SpO2 , and patient preference. Regular HME use by tracheostomy patients is recommended to optimize pulmonary health. Newer ball-type speaking valve technology additionally allows concomitant HME and speaking valve application.

LEVEL OF EVIDENCE

2 Laryngoscope, 133:3422-3428, 2023.

Mortality outcomes of patients on chronic mechanical ventilation in different care settings: A systematic review

Objectives

To determine the outcomes of chronically ventilated patients outside the setting of intensive care units.

Design

Systematic review.

Setting and participants

Studies evaluating patients on chronic invasive mechanical ventilation in different care settings.

Methods

A systematic literature search of the PubMed, Embase, Cochrane Library, CINAHL (EBSCOhost), LILACS and Scopus databases from inception to March 27, 2020. Studies reporting mortality outcomes of patients ≥18 years of age on chronic invasive mechanical ventilation in intensive care units and other care settings were eligible for inclusion.

Results

Sixty studies were included in the systematic review. Mortality rates ranged from 13.7% to 77.8% in ICUs (n = 17 studies), 7.8%-51.0% in non-ICUs including step-down units and inpatient wards (n = 26 studies), and 12.0%-91.8% in home or nursing home settings (n = 19 studies). Age was associated with mortality in all care settings. Weaning rates ranged from 10.0% to 78.2% across non-ICU studies. Studies reporting weaning as their primary outcome demonstrated higher success rates in weaning. Home care studies reported low incidences of ventilator failure. None of the studies reported ventilator malfunction as the primary cause of death.

Conclusions and implications

Mortality outcomes across various settings were disparate due to methodological and clinical heterogeneity among studies. However, there is evidence to suggest non-ICU venues of care as a comparable alternative to ICUs for stable, chronically ventilated patients, with the additional benefit of providing specialized weaning programs. By synthesizing the global data on managing chronically ventilated patients in various care settings, this study provides health care systems and providers alternative venue options for the delivery of prolonged ventilatory care in the context of limited ICU resources.

Communication experience of individuals treated with home mechanical ventilation

BACKGROUND

Mechanical ventilatory support seriously affects speaking and communication, and earlier studies show that many ventilator-supported patients experience difficulties and frustration with their speech and voice production. Since there is a growing number of individuals who require mechanical ventilatory support and there is a paucity of studies that examine ventilator-supported communication, this research area needs to be developed to ensure adequate health services for this population. The present study focused on ventilator-supported communication from the point of view of individuals receiving home mechanical ventilation (HMV).

AIMS

The specific aim was to examine the communication experience of individuals receiving HMV.

METHODS & PROCEDURES

A qualitative approach was adopted for this study, and data were collected by means of semi-structured interviews. Qualitative content analysis was used to structure, condense and interpret the data. The participants were recruited from the National Respiratory Centre (NRC) in Sweden, and included 19 individuals receiving HMV.

OUTCOMES & RESULTS

The main theme A long and lonely struggle to find a voice and six subthemes detailing different facets of it emerged from data analysis: Managing changed speech conditions, Prioritising voice, A third party supporting communication, Using communication to get things done, Depending on technology, and Facing ignorance. Important aspects influencing the ventilator-supported individuals' communicative performance (speech, support from others and technological solutions) are discussed.

CONCLUSIONS & IMPLICATIONS

The study revealed that healthcare practitioners involved in the care of individuals receiving HMV need to improve their understanding and knowledge of issues related to ventilator-supported communication. Individuals receiving HMV encounter a needlessly long and lonely struggle to achieve effective communication. They face numerous challenges regarding their communication, and they need to be heard in both literal and figurative senses. To overcome these challenges they need support from competent healthcare practitioners and personal assistants, and continuous follow-up by speech and language therapists tailoring communicative solutions to fit individual needs.

Elective tracheostomy is an alternative treatment in patients with severe obstructive sleep apnoea syndrome and CPAP failure

CONCLUSIONS

Elective tracheostomy with custom-made tubes was tolerated in a majority of patients with severe obstructive sleep apnoea syndrome (OSAS), as it reduced daytime symptoms and served as a link to other treatments.

OBJECTIVES

To evaluate the tolerability of elective tracheostomy and changes in excessive daytime sleepiness and nocturnal oxygen desaturations (ODI) in patients with severe OSAS and obesity.

PATIENTS AND METHODS

The medical records of 10 patients, median age 53.5 years (range 31-77), BMI 36 kg/m(2) (31-50), ODI 81 (55-126) during a 5-year period were reviewed. Inclusion criteria were failure of continuous positive airway pressure (CPAP), acceptance of tracheostomy, excessive daytime sleepiness and ODI > 50. All patients received a custom-made tube. Sleep apnoea recordings and questionnaires with Epworth sleepiness scale (ESS) were performed before and after tracheostomy.

RESULTS

Eight of 10 patients tolerated the tube for more than 6 months. The ESS score was reduced from median 18 (range 8-23) to 5 (0-7) and the ODI values from 81 (55-126) to 13 (1-87). Two patients insisted on decannulation because they had nocturnal breathing problems, two underwent palatal surgery and were decannulated, and five still have their tubes. Severe cough, sputum infections and stoma granuloma were seen in all patients.

Material wear of polymeric tracheostomy tubes: a six-month study

OBJECTIVES

The objectives were to study long-term material wear of tracheostomy tubes made of silicone (Si), polyvinyl chloride (PVC), and polyurethane (PU) after 3 and 6 months of clinical use.

STUDY DESIGN

The study has a prospective and comparative design.

METHODS

Nineteen patients with long-term tracheostomy, attending the National Respiratory Center in Sweden, were included, n = 6 with Si tubes, n = 8 with PVC tubes, and n = 5 with PU tubes. The tubes were exposed to the local environment in the trachea for 3 and 6 months and analyzed by scanning electron microscopy, attenuated total reflectance Fourier transform infrared spectroscopy, and differential scanning calorimetry.

RESULTS

All tubes revealed severe surface changes. No significant differences were established after 3 or 6 months of exposure between the various materials. The changes had progressed significantly after this period, compared to previously reported changes after 30 days of exposure. The results from all analyzing techniques correlated well.

CONCLUSIONS

All tubes, exposed in the trachea for 3-6 months, revealed major degradation and changes in the surface of the material. Polymeric tracheostomy tubes should be changed before the end of 3 months of clinical use.

Clinical use and material wear of polymeric tracheostomy tubes

OBJECTIVES

The objectives were to compare the duration of use of polymeric tracheostomy tubes, i.e., silicone (Si), polyvinyl chloride (PVC), and polyurethane (PU), and to determine whether surface changes in the materials could be observed after 30 days of patient use.

METHODS

Data were collected from patient and technical records for all tracheostomized patients attending the National Respiratory Center in Sweden. In the surface study, 19 patients with long-term tracheostomy were included: six with Bivona TTS Si tubes, eight with Shiley PVC tubes, and five with Trachoe Twist PU tubes. All tubes were exposed in the trachea for 30 days before being analyzed by scanning electron microscopy (SEM) and attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR). New tubes and tubes exposed in phosphate-buffered saline were used as reference.

RESULTS

Si tubes are used for longer periods of time than those made of PVC (P<.0001) and PU (P=.021). In general, all polymeric tubes were used longer than the recommended 30-day period. Eighteen of the 19 tubes exposed in patients demonstrated, in one or more areas of the tube, evident surface changes. The morphologic changes identified by SEM correlate well with the results obtained by ATR-FTIR.

CONCLUSIONS

Si tracheostomy tubes are in general used longer than those made of PVC and PU. Most of the tubes exposed in the trachea for 30 days suffered evident surface changes, with degradation of the polymeric chains as a result.

Tracheostomy inner cannula care: a randomized crossover study of two decontamination procedures

BACKGROUND

Today several methods for decontaminating inner cannulae exist. These methods are not based on scientific data, but often on local clinical tradition. This study compares two different decontamination methods. The aim was to find a practical and safe decontamination method. It is a randomized, single-blinded, comparative crossover study.

METHODS

Fifty outpatients with long-term tracheostomy with an inner cannula were consecutively included and randomly allocated to begin with one of two different treatment sequences: detergent and chlorhexidine-alcohol (A) or detergent (B). Samples for bacterial culture were taken before and after decontamination, and the number of bacteria colonies was counted.

RESULTS

Before decontamination, the inner cannulae grew high numbers of bacteria, which were parts of the normal flora of the upper respiratory tract and did not differ significantly between the two sequences (AB; BA). The primary variable was the culture count value after chlorhexidine-alcohol/detergent (A) and detergent (B). The effects of both methods were larger than expected, and the results showed a nearly total elimination of organisms. The equivalence criterion, ratio of mean colony counts (A/B) >0.8, was met at a significance level of P<0.001.

CONCLUSIONS

Cleaning the tracheostomy inner cannula with detergent and water is sufficient to achieve decontamination.

A woman who required long-term mechanical ventilation to treat limbic encephalitis during pregnancy

We describe our experience with a woman who had severe non-herpetic acute limbic encephalitis at 20 weeks' gestation. Despite receiving mechanical ventilation for about 3 months because of impaired consciousness and frequent convulsions, she had a normal delivery and an uneventful recovery with no sequelae. The patient did not respond to treatment with antiviral agents. Anticonvulsant agents were given while monitoring plasma drug concentrations. Early treatment and the prevention of complications apparently contributed to good outcomes in the mother and child.