Effects of Nursing Care and Staff Skill Mix on Patient Outcomes Within Acute Care Nursing Units

Travel nurses and patient outcomes: A systematic review

BACKGROUND

The unprecedented use of travel and temporary nurses in recent years requires further investigation of the impact on patient care.

PURPOSE

We conducted a systematic review of empirical research investigating the relationship between travel nurses and patient care to identify if consistent significant associations exist and how structural and process variables may influence such associations.

METHODS

A systematic review following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses of six databases resulted in the identification of 21 relevant articles.

RESULTS

The existing research of travel nurse use differs widely in terms of the definition of travel nurse, study design, and included controls. The literature has failed to establish a consistent relationship between travel nurses and patient outcomes. Adverse associations between travel nursing and patient care may reflect staffing levels or work environments rather than the specific care by the travel nurses themselves.

PRACTICE IMPLICATIONS

Underlying structural and process variables, such as staffing levels and the practice work environment, may be confounding associations between travel nurse usage and quality patient care. Administrators and managers are urged to assess staffing and the work environment when employing travel nurses.

[Agency work in intensive care : Impact of temporary contract work on patient care in intermediate care and intensive care units]

Hintergrund

Leiharbeiter werden, meist im Sinne einer Arbeitnehmerüberlassung, zur pflegerischen Versorgung von Intensivpatienten eingesetzt. Ob bzw. wie sich Leiharbeit in der Pflege auf die Patientenversorgung auswirkt, wurde bislang kaum untersucht.

Ziel

Zweck dieser systematischen Übersichtsarbeit ist es, die verfügbaren Forschungsergebnisse über den Einsatz von Leiharbeitern in der pflegerischen Versorgung auf Intensiv- und Überwachungsstationen zu beschreiben und die potenziellen Auswirkungen auf das Patientenoutcome zusammenzufassen.

Methode

Es wurde in sieben Datenbanken mit booleschen Operatoren systematisch nach englisch- und deutschsprachigen Studien recherchiert und in Anlehnung an das PRISMA-Schema ausgewertet. Referenzen der Studien wurden ebenfalls in die Suche inkludiert und die Qualität aller eingeschlossenen Studien nach Hawker-Kriterien bewertet.

Ergebnis

Von insgesamt N = 630 gesichteten Datensätzen konnten jeweils eine qualitative und zwei quantitative Studien identifiziert und in die Auswertung einbezogen werden. Die Ergebnisse der qualitativen Studien gaben nicht signifikant an, dass Leiharbeiter zu einem schlechteren Patientenoutcome beitragen können. Die Ergebnisse der quantitativen Studien zeigten, dass die Wahrscheinlichkeit für das Auftreten von katheterassoziierten Infektionen mit dem Einsatz von Leiharbeitern steigen kann, aber eher von der Stationsgröße anhängig ist: Je zusätzlichem Bett steigt die Wahrscheinlichkeit für eine VAP um 14,8 % (95 %-CI = 1,032–1,277, p = 0,011). Allerdings konnten Tendenzen für einen Rückgang der Sepsisrate, sobald weniger Leiharbeiter (Stunden/Patient) auf der Intensivstation eingesetzt wurden, nicht bestätigt werden.

Schlussfolgerung

In den wenigen auswertbaren Studien wurden keine Hinweise dafür gefunden, dass der Einsatz von Leiharbeitern auf Intensiv- (ITS) und Überwachungsstationen (IMC) einen signifikanten Einfluss auf das Patientenoutcome hat. Es wurden allerdings Hinweise gefunden, dass individuelle Qualifikationen und die Arbeitsbedingungen einen Einfluss auf das Outcome haben. Weitere Studien sollten betrachten, welches Verhältnis von Festangestellten zu Leiharbeitern als unkritisch anzusehen ist, welche Qualifikationen temporäre Mitarbeiter vorweisen sollten und inwieweit diese überprüft werden können.

Zusatzmaterial online

Die Online-Version dieses Beitrags (10.1007/s00063-020-00753-5) enthält die vollständige Suchstrategie je Datenbank. Beitrag und Zusatzmaterial stehen Ihnen auf www.springermedizin.de zur Verfügung. Bitte geben Sie dort den Beitragstitel in die Suche ein, das Zusatzmaterial finden Sie beim Beitrag unter „Ergänzende Inhalte“.

Are hospital nurse staffing practices associated with postoperative cardiac events and death? A systematic review

INTRODUCTION

Postoperative cardiac events are frequent complications of surgery, and their occurrence could be associated with suboptimal nurse staffing practices, but the existing evidence remains scattered. We systematically reviewed studies linking nurse staffing practices to postoperative cardiac events and two related outcomes, all-cause mortality and failure-to-rescue.

METHODS

A systematic search of the English/French literature was undertaken in the CINAHL, PsychInfo, and Medline databases. Studies were included if they: a) were published between 1996 and 2018; b) used a quantitative design; c) examined the association between at least one of seven staffing practices of interest (i.e., staffing levels, skill mix, work environment characteristics, levels of education and experience of the registered nurses, and overtime or temporary staff use) and postoperative cardiac events, mortality or failure-to-rescue; and d) were conducted among surgical patients. Data extraction, analysis, and synthesis, along with study methodological quality appraisal, were performed by two authors. High methodological heterogeneity precluded a formal meta-analysis.

RESULTS

Among 3,375 retrieved articles, 44 studies were included (39 cross-sectional, 3 longitudinal, 1 case-control, 1 interrupted time series). Existing evidence shows that higher nurse staffing levels, a higher proportion of registered nurses with an education at the baccalaureate degree level, and more supportive work environments are related to lower rates of both 30-day mortality and failure-to-rescue. Other staffing practices were less often studied and showed inconsistent associations with mortality or failure-to-rescue. Similarly, few studies (n = 10) examined the associations between nurse staffing practices and postoperative cardiac events and showed inconsistent results.

CONCLUSION

Higher nurse staffing levels, higher registered nurse education (baccalaureate degree level) and more supportive work environments were cross-sectionally associated with lower 30-day mortality and failure-to-rescue rates among surgical patients, but longitudinal studies are required to corroborate these associations. The existing evidence regarding postoperative cardiac events is limited, which warrants further investigation.

A quantitative systematic review of the association between nurse skill mix and nursing-sensitive patient outcomes in the acute care setting

AIMS

To examine the association between nurse skill mix (the proportion of total hours provided by Registered Nurses) and patient outcomes in acute care hospitals.

DESIGN

A quantitative systematic review included studies published in English between January 2000 - September 2018.

DATA SOURCES

Cochrane Library, CINAHL Plus with Full Text, MEDLINE, Scopus, Web of Science and Joanna Briggs Institute were searched. Observational and experimental study designs were included. Mix-methods designs were included if the quantitative component met the criteria.

REVIEW METHODS

The Systematic Review guidelines of the Joanna Briggs Institute and its critical appraisal instrument were used. An inverse association was determined when seventy-five percent or more of studies with significant results found this association.

RESULTS

Sixty-three articles were included. Twelve patient outcomes were inversely associated with nursing skill mix (i.e., higher nursing skill mix was significantly associated with improved patient outcomes). These were length of stay; ulcer, gastritis and upper gastrointestinal bleeds; acute myocardial infarction; restraint use; failure-to-rescue; pneumonia; sepsis; urinary tract infection; mortality/30-day mortality; pressure injury; infections and shock/cardiac arrest/heart failure.

CONCLUSION

Nursing skill mix affected 12 patient outcomes. However, further investigation using experimental or longitudinal study designs are required to establish causal relationships. Consensus on the definition of skill mix is required to enable more robust evaluation of the impact of changes in skill mix on patient outcomes.

IMPACT

Skill mix is perhaps more important than the number of nurses in reducing adverse patient outcomes such as mortality and failure to rescue, albeit the optimal staffing profile remains elusive in workforce planning.

Nurse staffing models in acute care: A descriptive study

AIMS

To identify nurse staffing groups in acute care facilities.

DESIGN

This retrospective descriptive study used a configurational approach.

METHODS

Data from a two-month target period from January-March 2016 were collected for 40 facilities in four different hospitals in one of the largest regions of Quebec. Multiple factorial analysis and hierarchical ascendant classification were used to generate a limited number of nurse staffing groups.

RESULTS/FINDINGS

Four distinct nurse staffing groups emerged from this study. The least resourced model relied mainly on less qualified personnel and agency staff. The moderately resourced basic model was assessed as average across all staffing dimensions, but employed less overtime, relying mostly on auxiliary nurses. The moderately resourced professional group, also moderate in most variables, involved more overtime and fewer less qualified personnel. The most resourced group maximized highly qualified personnel and minimized instability in the nursing team.

CONCLUSION

This study covered multiple staffing groups with widely varying characteristics. Most groups entailed risks for quality of care at one or more levels. Few care units approached the theoretical staffing ideal.

Nursing Education Program for Hospital-Acquired Pressure Injury Prevention in Adult Acute Care Setting: A Quality Improvement Project

The purpose of this Quality Improvement project was to develop a multimedia hospital-acquired pressure injury (HAPI) prevention education program. The project setting was 3 adult critical care units plus a step-down unit located in the Mid-Atlantic region of the United States. A multimedia educational intervention was developed, which comprised 4 modules designed to improve nursing knowledge and competency in HAPI prevention. A posteducation program staff survey was also administered to evaluate nurse satisfaction with the program. Nurse knowledge of HAPI prevention was measured before and following implementation of the educational intervention. One hundred twenty-nine participants completed the education program, and 117 completed the satisfaction survey. Analysis revealed a statistically significant increase in knowledge after the education course (P < .05). Findings also indicated participants were satisfied that the program met stated aims.

Rural Hospital Nursing Skill Mix and Work Environment Associated With Frequency of Adverse Events

Introduction:

Although rural hospitals serve about one fifth of the United States, few studies have investigated relationships among nursing resources and rural hospital adverse events.

Objectives:

The purpose was to determine relationships among nursing skill mix (proportion of registered nurses [RNs] to all nursing staff), the work environment, and adverse events (medication errors, patient falls with injury, pressure ulcers, and urinary tract infections) in rural hospitals.

Methods:

Using a cross-sectional design, nurse survey data from a large study examining nurse organizational factors, patient safety, and quality from four U.S. states were linked to the 2006 American Hospital Association data. The work environment was measured using the Practice Environment Scale of the Nursing Work Index (PES-NWI). Nurses reported adverse event frequency. Data analyses were descriptive and inferential.

Results:

On average, 72% of nursing staff were RNs (range = 45%–100%). Adverse event frequency ranged from 0% to 67%, across 76 hospitals. In regression models, a 10-point increase in the proportion of RNs among all nursing staff and a one standard deviation increase in the PES-NWI score were significantly associated with decreased odds of frequent adverse events.

Conclusion

Rural hospitals that increase the nursing skill mix and improve the work environment may achieve reduced adverse event frequency.

Organisation of health services for preventing and treating pressure ulcers

BACKGROUND

Pressure ulcers, which are a localised injury to the skin, or underlying tissue, or both, occur when people are unable to reposition themselves to relieve pressure on bony prominences. Pressure ulcers are often difficult to heal, painful, expensive to manage and have a negative impact on quality of life. While individual patient safety and quality care stem largely from direct healthcare practitioner-patient interactions, each practitioner-patient wound-care contact may be constrained or enhanced by healthcare organisation of services. Research is needed to demonstrate clearly the effect of different provider-orientated approaches to pressure ulcer prevention and treatment.

OBJECTIVES

To assess the effects of different provider-orientated interventions targeted at the organisation of health services, on the prevention and treatment of pressure ulcers.

SEARCH METHODS

In April 2018 we searched the Cochrane Wounds Specialised Register; the Cochrane Central Register of Controlled Trials (CENTRAL); Ovid MEDLINE (including In-Process & Other Non-Indexed Citations); Ovid Embase and EBSCO CINAHL Plus. We also searched three clinical trials registries for ongoing and unpublished studies, and scanned reference lists of relevant included studies as well as reviews, meta-analyses and health technology reports to identify additional studies. There were no restrictions with respect to language, date of publication or study setting.

SELECTION CRITERIA

Randomised controlled trials (RCTs), cluster-RCTs, non-RCTs, controlled before-and-after studies and interrupted time series, which enrolled people at risk of, or people with existing pressure ulcers, were eligible for inclusion in the review.

DATA COLLECTION AND ANALYSIS

Two review authors independently performed study selection, risk of bias assessment, data extraction and GRADE assessment of the certainty of evidence.

MAIN RESULTS

The search yielded a total of 3172 citations and, following screening and application of the inclusion and exclusion criteria, we deemed four studies eligible for inclusion. These studies reported the primary outcome of pressure ulcer incidence or pressure ulcer healing, or both.One controlled before-and-after study explored the impact of transmural care (a care model that provided activities to support patients and their family/partners and activities to promote continuity of care), among 62 participants with spinal cord injury. It is unclear whether transmural care leads to a difference in pressure ulcer incidence compared with usual care (risk ratio (RR) 0.93, 95% confidence interval (CI) 0.53 to 1.64; very low-certainty evidence, downgraded twice for very serious study limitations and twice for very serious imprecision).One RCT explored the impact of hospital-in-the-home care, among 100 older adults. It is unclear whether hospital-in-the-home care leads to a difference in pressure ulcer incidence risk compared with hospital admission (RR 0.32, 95% CI 0.03 to 2.98; very low-certainty evidence, downgraded twice for very serious study limitations and twice for very serious imprecision).A third study (cluster-randomised stepped-wedge trial), explored the impact of being cared for by enhanced multidisciplinary teams (EMDT), among 161 long-term-care residents. The analyses of the primary outcome used measurements of 201 pressure ulcers from 119 residents. It is unclear if EMDT reduces the pressure ulcer incidence rate compared with usual care (hazard ratio (HR) 1.12, 95% CI 0.74 to 1.68; very low-certainty evidence, downgraded twice for very serious study limitations and twice for very serious imprecision). It is unclear whether there is a difference in the number of wounds healed (RR 1.69, 95% CI 1.00 to 2.87; very low-certainty evidence, downgraded twice for very serious study limitations and twice for very serious imprecision). It is unclear whether there is a difference in the reduction in surface area, with and without EMDT, (healing rate 1.006; 95% CI 0.99 to 1.03; very low-certainty evidence, downgraded twice for very serious study limitations and twice for very serious imprecision). It is unclear if EMDT leads to a difference in time to complete healing (HR 1.48, 95% CI 0.79 to 2.78, very low-certainty evidence, downgraded twice for very serious study limitations and twice for very serious imprecision).The final study (quasi-experimental cluster trial), explored the impact of multidisciplinary wound care among 176 nursing home residents. It is unclear whether there is a difference in the number of pressure ulcers healed between multidisciplinary care, or usual care (RR 1.18, 95% CI 0.98 to 1.42; very low-certainty evidence, downgraded twice for very serious study limitations and twice for very serious imprecision). It is unclear if this type of care leads to a difference in time to complete healing compared with usual care (HR 1.73, 95% CI 1.20 to 2.50; very low-certainty evidence; downgraded twice for very serious study limitations and twice for very serious imprecision).In all studies the certainty of the evidence is very low due to high risk of bias and imprecision. We downgraded the evidence due to study limitations, which included selection and attrition bias, and sample size. Secondary outcomes, such as adverse events were not reported in all studies. Where they were reported it was unclear if there was a difference as the certainty of evidence was very low.

AUTHORS' CONCLUSIONS

Evidence for the impact of organisation of health services for preventing and treating pressure ulcers remains unclear. Overall, GRADE assessments of the evidence resulted in judgements of very low-certainty evidence. The studies were at high risk of bias, and outcome measures were imprecise due to wide confidence intervals and small sample sizes, meaning that additional research is required to confirm these results. The secondary outcomes reported varied across the studies and some were not reported. We judged the evidence from those that were reported (including adverse events), to be of very low certainty.

Nurse staffing levels, missed vital signs and mortality in hospitals: retrospective longitudinal observational study

Background

Low nurse staffing levels are associated with adverse patient outcomes from hospital care, but the causal relationship is unclear. Limited capacity to observe patients has been hypothesised as a causal mechanism.

Objectives

This study determines whether or not adverse outcomes are more likely to occur after patients experience low nurse staffing levels, and whether or not missed vital signs observations mediate any relationship.

Design

Retrospective longitudinal observational study. Multilevel/hierarchical mixed-effects regression models were used to explore the association between registered nurse (RN) and health-care assistant (HCA) staffing levels and outcomes, controlling for ward and patient factors.

Setting and participants

A total of 138,133 admissions to 32 general adult wards of an acute hospital from 2012 to 2015.

Main outcomes

Death in hospital, adverse event (death, cardiac arrest or unplanned intensive care unit admission), length of stay and missed vital signs observations.

Data sources

Patient administration system, cardiac arrest database, eRoster, temporary staff bookings and the Vitalpac system (System C Healthcare Ltd, Maidstone, Kent; formerly The Learning Clinic Limited) for observations.

Results

Over the first 5 days of stay, each additional hour of RN care was associated with a 3% reduction in the hazard of death [hazard ratio (HR) 0.97, 95% confidence interval (CI) 0.94 to 1.0]. Days on which the HCA staffing level fell below the mean were associated with an increased hazard of death (HR 1.04, 95% CI 1.02 to 1.07), but the hazard of death increased as cumulative staffing exposures varied from the mean in either direction. Higher levels of temporary staffing were associated with increased mortality. Adverse events and length of stay were reduced with higher RN staffing. Overall, 16% of observations were missed. Higher RN staffing was associated with fewer missed observations in high-acuity patients (incidence rate ratio 0.98, 95% CI 0.97 to 0.99), whereas the overall rate of missed observations was related to overall care hours (RN + HCA) but not to skill mix. The relationship between low RN staffing and mortality was mediated by missed observations, but other relationships between staffing and mortality were not. Changing average skill mix and staffing levels to the levels planned by the Trust, involving an increase of 0.32 RN hours per patient day (HPPD) and a similar decrease in HCA HPPD, would be associated with reduced mortality, an increase in staffing costs of £28 per patient and a saving of £0.52 per patient per hospital stay, after accounting for the value of reduced stays.

Limitations

This was an observational study in a single site. Evidence of cause is not definitive. Variation in staffing could be influenced by variation in the assessed need for staff. Our economic analysis did not consider quality or length of life.

Conclusions

Higher RN staffing levels are associated with lower mortality, and this study provides evidence of a causal mechanism. There may be several causal pathways and the absolute rate of missed observations cannot be used to guide staffing decisions. Increases in nursing skill mix may be cost-effective for improving patient safety.

Future work

More evidence is required to validate approaches to setting staffing levels. Other aspects of missed nursing care should be explored using objective data. The implications of findings about both costs and temporary staffing need further exploration.

Trial registration

This study is registered as ISRCTN17930973.

Funding

This project was funded by the National Institute for Health Research (NIHR) Health Services and Delivery Research programme and will be published in full in Health Services and Delivery Research; Vol. 6, No. 38. See the NIHR Journals Library website for further project information.

Evidence on Nurse Staffing Ratios and Patient Outcomes in a Low-Income Country: Implications for Future Research and Practice

BACKGROUND

Conclusive evidence on the effect of nurse staffing ratios on nurse-sensitive outcomes (NSOs) has not yet been achieved worldwide.

AIMS

To describe the relationship between nurse staffing and NSOs at a Magnet designated, university hospital a low-income country.

METHODS

A 48-month prospective study assessed the relationship between nurse staffing and six patient outcomes or NSOs in medical-surgical units and critical care units (CCUs). Nurse staffing was measured by nursing hours per patient day (NHPPD) and skill mix, whereas NSOs were total falls and injury falls per 1,000 patient days, percent of surveyed patients with hospital-acquired pressure injuries (HAPI), catheter-associated urinary tract infections, ventilator-associated pneumonia, and central line-associated bloodstream infections (CLABSI) per 1,000 central line days.

RESULTS

The odds for total falls, injury falls, HAPI, and CLABSI in the medical-surgical units were higher with lower NHPPD ratios, OR = 4.67, p = .000; OR = 4.33, p = .001; OR = 3.77, p = .004 and OR = 2.61, p = .006, respectively. For the CCUs, lower rates of NHPPD increased the odds for total falls, OR = 6.25, p = .0007, HAPIs OR = 3.91, p = .001 and CLABSI, OR = 4.78, p = .000. Skill mix was associated with total falls, OR = 2.40, p = .005 and HAPIs OR = 2.07, p = .03 in the medical-surgical units but had no effect in any NSOs in the CCUs.

LINKING EVIDENCE TO ACTION

Higher rates of nurses per patient were effective in improving some NSOs but not others. Skill mix had no effect on any of the six NSOs in the CCUs. As such, the results remain inconclusive as the benefits of the higher nurse to patient ratios in this low-income country warranting further multisite studies in different settings and countries.

Physical restraint: perceptions of nurse managers, registered nurses and healthcare assistants

AIM

To examine the perceptions of nurse managers, registered nurses and healthcare assistants of physical restraint use on older people in a long-term care setting in the Republic of Ireland.

BACKGROUND

The use of physical restraint, although controversial, persists in long-term care settings, despite recommendations for restraint-free environments. Perception and attitude of staff can influence use of physical restraint.

METHODS

A descriptive cross-sectional design was used. A total of 250 nursing and healthcare assistant staff were recruited. A questionnaire incorporating demographics and the Perceptions of Restraint Use Questionnaire was used. Descriptive and inferential statistical analyses were conducted.

RESULTS

Mean age of respondents (n = 156) was 41 years, and the majority were female. Overall, a low level of importance was attached to the use of restraint. Nurse managers and registered nurses compared favourably with healthcare assistants who attached a higher importance to use of restraint. Across all three staff groups, greatest importance was attached to the use of physical restraint for reducing falls, followed by prevention of treatment interference. Restraint was least favoured as a means of impairment management. Education was not an explanatory factor in perceived importance of physical restraint use.

CONCLUSION

Nurse managers and registered nurses are unlikely to use physical restraint. However, there is concern regarding perception of healthcare assistants on use of restraint.

IMPLICATIONS FOR NURSING AND HEALTH POLICY

Results from this study compare favourably with those in countries that have no policy on physical restraint use. Educational programmes alone are insufficient to address use of physical restraint. Attention to skill mix with adequate support for healthcare assistants in long-term care settings is recommended.

The effect of nurse-to-patient ratios on nurse-sensitive patient outcomes in acute specialist units: a systematic review and meta-analysis

Background:

Nurses are pivotal in the provision of high quality care in acute hospitals. However, the optimal dosing of the number of nurses caring for patients remains elusive. In light of this, an updated review of the evidence on the effect of nurse staffing levels on patient outcomes is required.

Aim:

To undertake a systematic review and meta-analysis examining the association between nurse staffing levels and nurse-sensitive patient outcomes in acute specialist units.

Methods:

Nine electronic databases were searched for English articles published between 2006 and 2017. The primary outcomes were nurse-sensitive patient outcomes.

Results:

Of 3429 unique articles identified, 35 met the inclusion criteria. All were cross-sectional and the majority utilised large administrative databases. Higher staffing levels were associated with reduced mortality, medication errors, ulcers, restraint use, infections, pneumonia, higher aspirin use and a greater number of patients receiving percutaneous coronary intervention within 90 minutes. A meta-analysis involving 175,755 patients, from six studies, admitted to the intensive care unit and/or cardiac/cardiothoracic units showed that a higher nurse staffing level decreased the risk of inhospital mortality by 14% (0.86, 95% confidence interval 0.79–0.94). However, the meta-analysis also showed high heterogeneity (I2=86%).

Conclusion:

Nurse-to-patient ratios influence many patient outcomes, most markedly inhospital mortality. More studies need to be conducted on the association of nurse-to-patient ratios with nurse-sensitive patient outcomes to offset the paucity and weaknesses of research in this area. This would provide further evidence for recommendations of optimal nurse-to-patient ratios in acute specialist units.

Exerting Capacity

Patient safety has been at the forefront of nursing research since the release of the Institute of Medicine's report estimating the number of preventable adverse events in hospital settings; yet no research to date has incorporated the perspectives of bedside nurses using classical grounded theory (CGT) methodology. This CGT study explored the perceptions of bedside registered nurses regarding patient safety in adult acute care hospitals. Data analysis used three techniques unique to CGT-the constant comparative method, coding, and memoing-to explore the values, realities, and beliefs of bedside nurses about patient safety. The analysis resulted in a substantive theory, Exerting Capacity, which explained how bedside nurses balance the demands of keeping their patients safe. Exerting Capacity has implications for health care organization leaders, nursing leaders, and bedside nurses; it also has indications for future research into the concept of patient safety.