The Severe Respiratory Insufficiency Application (SRI App): a pilot randomised controlled trial

Clinical evidence and technical aspects of innovative technology and monitoring of chronic NIV in COPD: a narrative review

INTRODUCTION

Chronic nocturnal noninvasive ventilation (NIV) improves outcomes in COPD patients with chronic hypercapnic respiratory failure. The aim of chronic NIV in COPD is to control chronic hypercapnic respiratory insufficiency and reduce symptoms of nocturnal hypoventilation, thereby improving quality of life. Chronic NIV care is more and more offered exclusively at home, enabling promising outcomes in terms of patient and caregiver satisfaction, hospital care consumption and cost reduction. Yet, to achieve and maintain optimal ventilation, during adaptation and follow-up, effective feasible (home) monitoring poses a significant challenge.

AREAS COVERED

Comprehensive monitoring of COPD patients receiving chronic NIV requires integrating data from ventilators and assessment of the patient's status including gas exchange, sleep quality, and patient-reported outcomes. The present article describes the physiological background of monitoring during NIV and aims to provide an overview of existing methods for monitoring, assessing their reliability and clinical relevance.

EXPERT OPINION

Patients on chronic NIV are 'ideal' candidates for home monitoring; the advantages of transforming hospital to home care are huge for patients and caregivers and for healthcare systems facing increasing patient numbers. Despite the multitude of available monitoring methods, identifying and characterizing the most relevant parameters associated with optimal patient well-being remains unclear.

[Home mechancial ventilation: quality of life and the final stage of life]

The evaluation of health-related quality of life (HRQL) has gained importance in recent years. Disease-specific questionnaires are available for respiratory insufficiency, which enable the assessment of HRQL. The Severe Respiratory Insufficiency (SRI) questionnaire, which was specially developed for patients with respiratory insufficiency, is ideal for quantifying the quality of life in patients receiving home mechanical ventilation (HMV). Studies using the SRI questionnaire demonstrated that the physical functioning of patients with chronic lung diseases of various etiologies is significantly impaired, but frequently without significant impairment of psychological well-being. Therefore, severity of the disease and HRQL do not necessarily correlate with each other.Both invasive and non-invasive mechanical ventilation can improve quality of life. Co-morbidity, and above all advanced age, have the highest negative predictive value with regard to in-hospital mortality and weaning failure. The number of patients older than 80 years who remain dependent on invasive HMV after prolonged weaning in Germany is increasing significantly. High dependence on invasive HMV is often associated with a loss of quality of life and autonomy. Thus, ethical issues of the continued treatment of ventilated patients at the end of life are discussed increasingly.After weaning failure, the indication for invasive HMV should be critically examined and should focus on potentially severely reduced quality of life and poor prognosis, as well as the patient's wishes. If previously agreed treatment goals can no longer be achieved during the course of invasive HMV, changing the therapy goals should be discussed within the clinical team, with the patient, their relatives and, if necessary, with legal representatives.In order to avoid overtreatment and unnecessary patient suffering during invasive HMV, advanced care planning should be started as early as possible and if necessary accompanied by palliative medical measures.

[The digitalization of pneumology and the role of medical societies]

BACKGROUND

Medicine is becoming increasingly digitalized. Digital applications are finding their way into health care. The aim of the study was to record the attitudes of members of the German Respiratory Society (DGP) towards digitalization.

METHODS

The study was conducted in cooperation with the DGP, the German Respiratory League and the Health Innovation Hub (HIH) of the German Federal Ministry of Health. Data were gathered with the help of an online questionnaire (July/August 2021), analyzed descriptively and supplemented with a subgroup comparison regarding proactivity of the members.

RESULTS

284 questionnaires were complete and included in the analysis (31% female); 76.4% believed that digitalization would change their daily professional life within five years. 47.2% had prescribed or planned to prescribe Digital Health Applications (DiGA). Lack of technology skills of patients and the time required for health professionals were seen as critical (49.3 and 47.5%). Regarding DiGA, scientific proof of efficacy (48.9%) and ease of use for patients (47.9%) were rated as most important. The subgroup comparison showed that 42.7% actively informed themselves about digital medicine and that this group saw more opportunities for meaningful use of DiGA.

CONCLUSION

The members of the DGP have mostly a positive view about the profound changes expected from digital medicine. The more active the role of DGP members and other professional societies, the more digital elements can add value to practice.

Monitoring Long Term Noninvasive Ventilation: Benefits, Caveats and Perspectives

Long term noninvasive ventilation (LTNIV) is a recognized treatment for chronic hypercapnic respiratory failure (CHRF). COPD, obesity-hypoventilation syndrome, neuromuscular disorders, various restrictive disorders, and patients with sleep-disordered breathing are the major groups concerned. The purpose of this narrative review is to summarize current knowledge in the field of monitoring during home ventilation. LTNIV improves symptoms related to CHRF, diurnal and nocturnal blood gases, survival, and health-related quality of life. Initially, patients with LTNIV were most often followed through elective short in-hospital stays to ensure patient comfort, correction of daytime blood gases and nocturnal oxygenation, and control of nocturnal respiratory events. Because of the widespread use of LTNIV, elective in-hospital monitoring has become logistically problematic, time consuming, and costly. LTNIV devices presently have a built-in software which records compliance, leaks, tidal volume, minute ventilation, cycles triggered and cycled by the patient and provides detailed pressure and flow curves. Although the engineering behind this information is remarkable, the quality and reliability of certain signals may vary. Interpretation of the curves provided requires a certain level of training. Coupling ventilator software with nocturnal pulse oximetry or transcutaneous capnography performed at the patient's home can however provide important information and allow adjustments of ventilator settings thus potentially avoiding hospital admissions. Strategies have been described to combine different tools for optimal detection of an inefficient ventilation. Recent devices also allow adapting certain parameters at a distance (pressure support, expiratory positive airway pressure, back-up respiratory rate), thus allowing progressive changes in these settings for increased patient comfort and tolerance, and reducing the requirement for in-hospital titration. Because we live in a connected world, analyzing large groups of patients through treatment of “big data” will probably improve our knowledge of clinical pathways of our patients, and factors associated with treatment success or failure, adherence and efficacy. This approach provides a useful add-on to randomized controlled studies and allows generating hypotheses for better management of HMV.