Factors Affecting Mechanical Ventilator Weaning Success and 28-Day Survival Among Patients With Acute Respiratory Distress Syndrome Secondary to COVID-19

The association of ventilator mechanical power with weaning outcomes in intensive care unit patients: a narrative review

Background and Objective

Mechanical power (MP) provides an integrated index of the mechanical properties of the respiratory system during mechanical ventilation. Increased levels of MP may identify patients who will do poorly during weaning and extubation. This literature review investigated the use of MP as a predictor of weaning outcomes in intensive care unit (ICU) patients, including a focused comparison of patients with coronavirus disease 19 (COVID-19) infections and patients with other causes of respiratory failure.

Methods

A review of the literature using PubMed, Embase, MEDLINE, and Preprint identified 305 possible studies; after removal of duplicates, 219 studies were screened, and five papers were selected for analysis. A search updated in 2024 identified four additional papers to include in this review.

Key Content and Findings

These studies demonstrate that higher MP levels are associated with weaning failure in ICU patients and that adjustment of MP for lung-thorax compliance (LTC) improves the prediction of outcomes. One study analyzed outcomes in patients with COVID-19 infections and reported that despite having higher MPs, patients with COVID-19 had lower rates of weaning failures. This result suggests different respiratory mechanics in these patients that could complicate weaning decisions.

Conclusions

In summary, MP can predict weaning outcomes in patients with respiratory failure requiring mechanical ventilation. However, some patients with COVID-19 infection may have unusual respiratory mechanics that may influence these associations.

Intensive and critical care nurses patient safety, care quality, professional self-efficacy, and missed nursing care: Structural equation model analysis

BACKGROUND

Globally, nurses' patient safety, care quality, and missed nursing care are well documented. However, there is a paucity of studies on the mediating roles of care quality and professional self-efficacy, particularly among intensive and critical care unit (ICCU) nurses in developing countries like the Philippines.

AIM

To test a model of the interrelationships of patient safety, care quality, professional self-efficacy, and missed nursing care among ICCU nurses.

METHODS

A cross-sectional, correlational design study was used. ICCU nurses (n = 335) were recruited via consecutive sampling from August to December 2023 and completed four validated self-report scales. Spearman Rho, structural equation modeling, mediation, and path analyses were utilized for data analysis.

RESULTS

The emerging model demonstrated acceptable fit parameters. Patient safety positively influenced care quality (β = .34, p = .002) and professional self-efficacy (β = .18, p = .011), while negatively affecting missed nursing care (β = -.34, p = .003). Care quality positively and negatively influenced professional self-efficacy (β = .40, p = .003) and missed nursing care (β = -.13, p = .003), respectively. Professional self-efficacy indirectly impacted missed nursing care (β = -.32, p = .003). Care quality (β = -.10, p = .003) and professional self-efficacy (β = .13, p = .003) showed mediating effects between patient safety and missed nursing care.

LINKING EVIDENCE TO ACTION

ICCU nurses' care quality and professional self-efficacy are essential mediating factors that can bolster patient safety practices, hence reducing missed nursing care. Therefore, healthcare organizations, nurse managers, and policymakers should cultivate care quality and self-efficacy by creating support programs and providing a positive practice environment. Nurses and nurse supervisors could directly observe missed nursing care in the ICCU to understand its underreported causes.

Psychosocial Predictors of Ventilator weaning Outcomes among patients in intensive care units

Background

Ventilator weaning is a process of discontinuing mechanical ventilation and transitioning patients to independent breathing after a period of mechanical support. Weaning outcomes among the critically ill in intensive care units (ICUs) vary significantly among individuals, leading to considerable variation in healthcare costs, length of hospital stay, morbidity and mortality. Addressing psychosocial aspects of care can improve weaning outcomes.

Objective

This study aimed to determine the effect of psychosocial factors (social support, family/significant other support, ability to communicate) on weaning outcome within intensive care patients. This research hypothesized that psychological and social factors play a role in determining ventilator weaning outcomes among ICU patients.

Methods

This study used a longitudinal, retrospective research design to analyze positive and negative psychosocial predictors of ventilator weaning outcomes. Data collection methods include interviews and questionnaires with patients and their families, as well as clinical data from the patient's medical records.

Results

presence of anxiety, depression, and hallucinations, have a negative relationship with weaning outcomes regarding a patient's psychological characteristics (rs = -0.207, -0.163, -0.158), while communication with a patient during mechanical ventilation have a positive relationship with weaning outcomes regarding a patient's psychological characteristics (rs = 0.152; p ≤ 0.05). Moreover patients who have fear during weaning trials, feeling neglected, and feeling insecurity have a negative relationship with weaning outcomes while gaining family support during mechanical ventilation have a positive relationship with weaning outcomes (rs = 0.144; p ≤ 0.05).Significance of results, the findings suggests that psychosocial factors, such as anxiety, depression, patient's perception of their illness, motivation to wean, and family involvement can influence the success of ventilator weaning among patients in ICUs.