Why do patients having coronary artery bypass grafts have different costs or length of stay? An analysis across 10 European countries

Fibrinogen is an independent preoperative predictor of hospital length of stay among patients undergoing coronary artery bypass grafting

OBJECTIVE

This study aims to examine the impact of preoperative fibrinogen concentration on the short-term outcomes and hospital length of stay (LOS) of patients undergoing Coronary Artery Bypass Grafting (CABG).

METHODS

Between January 2010 and June 2022, a retrospective analysis comprised 633 patients who sequentially received isolated, primary CABG. These patients were categorized into normal fibrinogen group (fibrinogen < 3.5 g/L) and high fibrinogen group (fibrinogen ≥ 3.5 g/L) according to preoperative fibrinogen concentration. The primary outcome was LOS. To correct for confounding and investigate the effect of preoperative fibrinogen concentration on the short-term outcomes and LOS, we employed propensity score matching (PSM). The correlation between fibriongen concentration and LOS in subgroups was examined using subgroup analysis.

RESULTS

We categorized 344 and 289 patients in the "normal fibrinogen group" and "high fibrinogen group", respectively. After PSM, compared to the normal fibrinogen group, the high fibrinogen group had a longer LOS [12.00 (9.00-15.00) vs. 13.00 (10.00-16.00), P = 0.028] and higher incidence of postoperative renal impairment [49 (22.1%) vs. 72 (32.4%), P = 0.014]. Cardiopulmonary bypass (CPB) or non-CPB CABG patients showed similar correlations between various fibrinogen concentrations and LOS, according to subgroup analyses.

CONCLUSIONS

Fibrinogen is an independent preoperative predictor of both the LOS and the postoperative renal impairment that occurs after CABG. Patients with high preoperative fibrinogen concentration had a higher incidence of postoperative renal impairment and a longer LOS, emphasizing the significance of preoperative fibrinogen management.

Predicting Hospital Length of Stay at Admission Using Global and Country-Specific Competing Risk Analysis of Structural, Patient, and Nutrition-Related Data from nutritionDay 2007-2015

Hospital length of stay (LOS) is an important clinical and economic outcome and knowing its predictors could lead to better planning of resources needed during hospitalization. This analysis sought to identify structure, patient, and nutrition-related predictors of LOS available at the time of admission in the global nutritionDay dataset and to analyze variations by country for countries with n > 750. Data from 2006–2015 (n = 155,524) was utilized for descriptive and multivariable cause-specific Cox proportional hazards competing-risks analyses of total LOS from admission. Time to event analysis on 90,480 complete cases included: discharged (n = 65,509), transferred (n = 11,553), or in-hospital death (n = 3199). The median LOS was 6 days (25th and 75th percentile: 4–12). There is robust evidence that LOS is predicted by patient characteristics such as age, affected organs, and comorbidities in all three outcomes. Having lost weight in the last three months led to a longer time to discharge (Hazard Ratio (HR) 0.89; 99.9% Confidence Interval (CI) 0.85–0.93), shorter time to transfer (HR 1.40; 99.9% CI 1.24–1.57) or death (HR 2.34; 99.9% CI 1.86–2.94). The impact of having a dietician and screening patients at admission varied by country. Despite country variability in outcomes and LOS, the factors that predict LOS at admission are consistent globally.

Prognostic Indicators of Delayed Surgical Recovery in Patients Undergoing Cardiac Surgery

PURPOSE

The purpose of this study was to analyze the prognostic capacity of the clinical indicators of a delayed surgical recovery nursing diagnosis throughout the hospital stay of patients having cardiac surgery.

DESIGN

A prospective cohort design was adopted. A sample of inpatients undergoing elective cardiac surgery was followed during the immediate preoperative period and hospitalization. This research was conducted in the southeast region of Brazil at a national reference institution that treats highly complex diseases and performs cardiac surgeries. Data were collected from July 2017 to July 2018.

METHODS

At the end of 1 year of data collection, 181 patients were followed in this study. The Kaplan-Meier method was used to calculate the survival time related to delayed surgical recovery. In addition, an extended Cox model of time-dependent covariates was adjusted to identify the clinical signs that influenced the change in the nursing diagnosis status.

RESULTS

A delayed surgical recovery nursing diagnosis was present in 23.2% of the sample studied. With an expected length of stay of 8 to 10 days, most new cases of delayed surgical recovery were observed on the 10th postoperative day, and the survival rate after this day was decreased until the 29th postoperative day, when the nursing diagnosis no longer appeared. Interrupted healing of the surgical area, loss of appetite, and atrial flutter were indicators related to an increased risk for delayed surgical recovery.

CONCLUSIONS

Timely recognition of selected clinical indicators demonstrates a promising prognostic capacity for delayed surgical recovery.

CLINICAL RELEVANCE

Accurate identification of prognostic factors allows nurses to identify early signs of postoperative complications. Consequently, the professional can develop an individualized plan of care, aiming at the satisfactory clinical recovery of the patient.

The effectiveness of the neonatal diagnosis-related group scheme

The goal of this study is to investigate the effectiveness of the neonatal diagnosis-related group scheme in patients affected by respiratory distress syndrome. The variable costs of individual patients in the same group are examined. This study uses the data of infants (N = 243) hospitalized in the Neonatal Intensive Care Unit of the Gaslini Children's Hospital in Italy in 2016. The care unit's operating and management costs are employed to estimate the average cost per patient. Operating costs include those related to personnel, drugs, medical supplies, treatment tools, examinations, radiology, and laboratory services. Management costs relate to administration, maintenance, and depreciation cost of medical equipment. Cluster analysis and Tobit regression are employed, allowing for the assessment of the total cost per patient per day taking into account the main cost determinants: birth weight, gestational age, and discharge status. The findings highlight great variability in the costs for patients in the same diagnosis-related group, ranging from a minimum of €267 to a maximum of €265,669. This suggests the inefficiency of the diagnosis-related group system. Patients with very low birth weight incurred costs approximately twice the reimbursement set by the policy; a loss of €36,420 is estimated for every surviving baby with a birth weight lower than 1,170 grams. On the contrary, at term, newborns cost about €20,000 less than the diagnosis-related group reimbursement. The actual system benefits hospitals that mainly treat term infants with respiratory distress syndrome and penalizes hospitals taking care of very low birth weight patients. As a result, strategic behavior and "up-coding" might occur. We conduct a cluster analysis that suggests a birth weight adjustment to determine new fees that would be fairer than the current costs.

Delivery, dose, outcomes and resource use of stroke therapy: the SSNAPIEST observational study

Background

Therapy is key to effective stroke care, but many patients receive little.

Objectives

To understand how stroke therapy is delivered in England, Wales and Northern Ireland, and which factors are associated with dose, outcome and resource use.

Design

Secondary analysis of the Sentinel Stroke National Audit Programme, using standard descriptive statistics and multilevel mixed-effects regression models, while adjusting for all known and measured confounders.

Setting

Stroke services in England, Wales and Northern Ireland.

Participants

A total of 94,905 adults admitted with stroke, who remained an inpatient for > 72 hours.

Results

Routes through stroke services were highly varied (> 800), but four common stroke pathways emerged. Seven distinct impairment-based patient subgroups were characterised. The average amount of therapy was very low. Modifiable factors associated with the average amount of inpatient therapy were type of stroke team, timely therapy assessments, staffing levels and model of therapy provision. More (of any type of) therapy was associated with shorter length of stay, less resource use and lower mortality. More occupational therapy, speech therapy and psychology were also associated with less disability and institutionalisation. Large amounts of physiotherapy were associated with greater disability and institutionalisation.

Limitations

Use of observational data does not infer causation. All efforts were made to adjust for all known and measured confounding factors but some may remain. We categorised participants using the National Institutes of Health Stroke Scale, which measures a limited number of impairments relatively crudely, so mild or rare impairments may have been missed.

Conclusions

Stroke patients receive very little therapy. Modifiable organisational factors associated with greater amounts of therapy were identified, and positive associations between amount of therapy and outcome were confirmed. The reason for the unexpected associations between large amounts of physiotherapy, disability and institutionalisation is unknown. Prospective work is urgently needed to investigate further. Future work needs to investigate (1) prospectively, the association between physiotherapy and outcome; (2) the optimal amount of therapy to provide for different patient groups; (3) the most effective way of organising stroke therapy/rehabilitation services, including service configuration, staffing levels and working hours; and (4) how to reduce unexplained variation in resource use.

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. 8, No. 17. See the NIHR Journals Library website for further project information.

Evaluation of Depression and Anxiety in Coronary Artery Bypass Surgery Patients: A Prospective Clinical Study

OBJECTIVE

The aim of this clinical study is to determine the depression and anxiety levels in coronary artery bypass graft (CABG) surgery patients in the pre and postoperative periods.

METHODS

This clinical prospective study was done with 65 patients. Beck's Depression Inventory (BDI) and Beck's Anxiety Inventory (BAI) tests were performed in patients who had a diagnosis of coronary artery disease and were awaiting CABG surgery. These patients presented characteristic symptoms of anxiety and depression and BDI and BAI tests are important to assess these symptoms.

RESULTS

We found out that depression and anxiety levels were higher in the postoperative than in the preoperative period (P<0.001). Both anxiety and depression levels were increased significantly following CABG operation when compared with preoperative levels in all patients. Statistical correlation of depression and anxiety in different ages, genders, and professions were evaluated too, but we did not found a correlation between them (P>0.05).

CONCLUSION

We suggest that good management of the psychological condition of cardiac surgery candidates, as well as post-bypass patients, will improve quality of life and cardiovascular outcomes in these patients.

Pre-operative depression predicted longer hospital length of stay among patients undergoing coronary artery bypass graft surgery

Purpose: Coronary artery bypass graft surgery (CABG) is a common and remarkably effective treatment for coronary heart disease, improving health status and enhancing quality of life. However, some outcomes after surgery remain unexplained, including psychological factors such as depression. The prevalence rates of pre- and post-operative depression among CABG patients are high, which is associated with negative short- and long-term outcomes. This study explores the impacts of pre-operative depressive symptoms on post-operative hospital length of stay (LOS) among patients undergoing CABG in Jordan. Patients and methods: This was a non-experimental, prospective observational study among 227 CABG patients recruited from 5 hospitals in Amman, Jordan. Depression was measured within an average of two weeks prior and one month after the operation using the Hospital Anxiety and Depression Scale. Length of stay was abstracted from medical records after discharge. Results: The average post-operative LOS was 11.40±10.41 days. The average pre-operative depression level was moderate; 12.76±6.80 and 42.47% complained of varying levels of depressive symptoms. The average post-operative depression level was moderate; 11.11±6.78 and 40.53% complained of varying levels of depressive symptoms. In stepwise regression models, depression scores and female gender were independent predictors that increased post-operative LOS. On the other hand, high income (≥1501$/month) and use of statins had protective effects and decreased post-operative LOS. The model explained 22.4% of the total variance regarding LOS. Conclusion: Pre-operative depressive symptoms increased post CABG LOS. Application of policies and depression assessment protocols prior to CABG by health care providers can identify high-risk groups (eg, females), so appropriate interventions can be designed and implemented to decrease morbidity and mortality.

The cost-quality relationship in European hospitals: a systematic review

Objective To determine the relationship between cost and quality in European hospitals. Methods Juran's cost-quality curve served as a theoretical framework, linked to basic efficiency concepts. Based on systematic database searches, citation searches and cross-referencing, we identify 1093 empirical studies. After exclusion of studies from outside Europe (699), non-hospital settings (10 studies), lack of a cost parameter (194) or a quality parameter (27 studies), 22 studies (28 analyses) were assessed for direction of association and methodological heterogeneity. Results There was evidence of positive, negative, two-directional and no association between cost and quality. We examined whether diagnosis, procedure, type of quality measure and specification of the econometric model could explain the inconsistent evidence, but no clear explanation is identified. Despite the significant policy relevance, evidence on the relationship between costs and quality is limited. The literature is characterized by substantial methodological heterogeneity and lack of explicit definitions of the chosen cost and quality parameters, the econometric model and the underlying hypothesis for the cost-quality relationship. Conclusion It has been more than 60 years since Juran introduced the idea of failure costs, which implied that the marginal costs of quality could be non-constant. It seems imperative to acknowledge this idea in future studies.

Patient-level costs of major cardiovascular conditions: a review of the international literature

OBJECTIVE

Robust cost estimates of cardiovascular (CV) events are required for assessing health care interventions aimed at reducing the economic burden of major adverse CV events. This review synthesizes international cost estimates of CV events.

METHODS

MEDLINE database was searched electronically for English language studies published during 2007-2012, with cost estimates for CV events of interest - unstable angina, myocardial infarction, heart failure, stroke, and CV revascularization. Included studies provided at least one estimate of patient-level direct costs in adults for any identified country. Information on study characteristics and cost estimates were collected. All costs were adjusted for inflation to 2013 values.

RESULTS

Across the 114 studies included, the average cost was US $6,466 for unstable angina, $11,664 for acute myocardial infarction, $11,686 for acute heart failure, $11,635 for acute ischemic stroke, $37,611 for coronary artery bypass graft, and $13,501 for percutaneous coronary intervention. The ranges for cost estimates varied widely across countries with US cost estimate being at least twice as high as European Union costs for some conditions. Few studies were found on populations outside the US and European Union.

CONCLUSION

This review showed wide variation in the cost of CV events within and across countries, while showcasing the continuing economic burden of CV disease. The variability in costs was primarily attributable to differences in study population, costing methodologies, and reporting differences. Reliable cost estimates for assessing economic value of interventions in CV disease are needed.

How Well Do All Patient Refined-Diagnosis-Related Groups Explain Costs of Pediatric Cancer Chemotherapy Admissions in the United States?

PURPOSE

State-based Medicaid programs have begun using All Patient Refined-Diagnosis-Related Groups (APR-DRGs) to determine hospital reimbursement rates. Medicaid provides coverage for 45% of childhood cancer admissions. This study aimed to examine how well APR-DRGs reflect admission costs for childhood cancer chemotherapy to inform clinicians, hospitals, and policymakers in the wake of policy changes.

METHODS

We identified 25,613 chemotherapy admissions in the 2009 Kids' Inpatient Database. To determine how well APR-DRGs explain costs, we applied a hierarchic linear regression model of hospital costs, allowing for a variety of patient, hospital, and geographic confounders.

RESULTS

APR-DRGs proved to be the most important predictors of admission costs (P < .001), with costs increasing by DRG severity code. Diagnosis, age, and hospital characteristics also predicted costs above and beyond those explained by APR-DRGs. Compared with admissions for patients with acute lymphoblastic leukemia, costs of admissions for patients with acute myelomonocytic leukemia were 82% higher; non-Hodgkin lymphoma, 20% higher; Hodgkin lymphoma, 25% lower; and CNS tumors, 27% lower. Admissions for children who were 10 years of age or older cost 26% to 35% more than admissions for infants. Admissions to children's hospitals cost 46% more than admissions to other hospital types.

CONCLUSION

APR-DRGs developed for adults are applicable to childhood cancer chemotherapy but should be refined to account for cancer diagnosis and patient age. Possible policy and clinical management changes merit further study to address factors not captured by APR-DRGs.

Peripheral nerve blocks in shoulder arthroplasty: how do they influence complications and length of stay?

BACKGROUND

Regional anesthesia has proven to be a highly effective technique for pain control after total shoulder arthroplasty. However, concerns have been raised about the safety of upper-extremity nerve blocks, particularly with respect to the incidence of perioperative respiratory and neurologic complications, and little is known about their influence, if any, on length of stay after surgery.

QUESTIONS/PURPOSES

Using a large national cohort, we asked: (1) How frequently are upper-extremity peripheral nerve blocks added to general anesthesia in patients undergoing total shoulder arthroplasty? (2) Are there differences in the incidence of and adjusted risk for major perioperative complications and mortality between patients receiving general anesthesia with and without nerve blocks? And (3) does resource utilization (blood product transfusion, intensive care unit admission, length of stay) differ between groups?

METHODS

We searched a nationwide discharge database for patients undergoing total shoulder arthroplasty under general anesthesia with or without addition of a nerve block. Groups were compared with regard to demographics, comorbidities, major perioperative complications, and length of stay. Multivariable logistic regressions were performed to measure complications and resource use. A negative binomial regression was fitted to measure length of stay.

RESULTS

We identified 17,157 patients who underwent total shoulder arthroplasty between 2007 and 2011. Of those, approximately 21% received an upper-extremity peripheral nerve block in addition to general anesthesia. Patients receiving combined regional-general anesthesia had similar mean age (68.6 years [95% CI: 68.2-68.9 years] versus 69.1 years [95% CI: 68.9-69.3 years], p < 0.0043), a slightly lower mean Deyo (comorbidity) index (0.87 versus 0.93, p = 0.0052), and similar prevalence of individual comorbidities, compared to those patients receiving general anesthesia only. Addition of regional anesthesia was not associated with different odds ratios for complications, transfusion, and intensive care unit admission. Incident rates for length of stay were also similar between groups (incident rate ratio = 0.99; 95% CI: 0.97-1.02; p = 0.467) CONCLUSIONS: Addition of regional to general anesthesia was not associated with an increased complication profile or increased use of resources. In combination with improved pain control as known from previous research, regional anesthesia may represent a viable management option for shoulder arthroplasty. However, further research is necessary to better clarify the risk of neurologic complications.

LEVEL OF EVIDENCE

Level IV, therapeutic study. See Instructions for Authors for a complete description of levels of evidence.

Coronary artery bypass grafts and diagnosis related groups: patient classification and hospital reimbursement in 10 European countries

BACKGROUND

The prospective reimbursement of hospitals through the grouping of patients into a finite number of categories (Diagnosis Related Groups, DRGs), is common to many European countries. However, the specific categories used vary greatly across countries, using different characteristics to define group boundaries and thus those characteristics which result in different payments for treatment. In order to assist in the construction and modification of national DRG systems, this study analyses the DRG systems of 10 European countries.

AIMS

To compare the characteristics used to categorise patients receiving a coronary artery bypass graft (CABG) surgery into DRGs. Further, to compare the structure into which DRGs are placed and the relative price paid for patients across Europe.

METHOD

Patients with a procedure of CABG surgery are analysed from Austria, England, Estonia, Finland, France, Germany, Ireland, Poland, Spain and Sweden. Diagrammatic algorithms of DRG structures are presented for each country. The price in Euros of seven typical case vignettes, each made up of a set of a hypothetical patient's characteristics, is also analysed for each country. In order to enable comparisons across countries the simplest case (index vignette) is taken as baseline and relative price levels are calculated for the other six vignettes, each representing patients with different combinations of procedures and comorbidities.

RESULTS

European DRG payment structures for CABG surgery vary in terms of the number of different DRGs used and the types of distinctions which define patient categorisation. Based on the payments given to hospitals in different countries, the most resource intensive patient, relative to the index vignette, ranges in magnitude from 1.37 in Poland to 2.82 in Ireland. There is also considerable variation in how much different systems pay for particular circumstances, such as the occurrence of catheterisation or presence of comorbidity.

CONCLUSION

Past experience of the construction of DRG systems for CABG patients demonstrates the variety of options available. It also highlights the importance of updating systems as frequently as possible, to incentivise best practice.

The combined association of depression and socioeconomic status with length of post-operative hospital stay following coronary artery bypass graft surgery: data from a prospective cohort study

OBJECTIVE

To understand the association between pre-operative depression symptoms, including cognitive and somatic symptom subtypes, and length of post-operative stay in patients undergoing coronary artery bypass graft (CABG) surgery, and the role of socioeconomic status (SES).

METHODS

We measured depression symptoms using the Beck Depression Inventory (BDI) and household income in the month prior to surgery in 310 participants undergoing elective, first-time, CABG. Participants were followed-up post-operatively to assess the length of their hospital stay.

RESULTS

We showed that greater pre-operative depression symptoms on the BDI were associated with a longer hospital stay (hazard ratio=0.978, 95% CI 0.957-0.999, p=.043) even after controlling for covariates, with the effect being observed for cognitive symptoms of depression but not somatic symptoms. Lower SES augmented the negative effect of depression on length of stay.

CONCLUSIONS

Depression symptoms interact with socioeconomic position to affect recovery following cardiac surgery and further work is needed in order to understand the pathways of this association.

Is quality costly? Patient and hospital cost drivers in vascular surgery

An increasing focus on hospital productivity has rendered a need for more thorough knowledge of cost drivers in hospitals, including a need for quantification of the impact of age, case-mix and other characteristics of patients, as well as establishment of the cost-quality relationship.The aim of this study is to identify cost drivers for vascular surgery in Danish hospitals with a specific view to quality of the treatment: Is higher quality associated with increased costs, when all other cost drivers are accounted for?We analyse cost drivers in a register-based study, using patient level data from three sources: The Vascular Register, the hospital cost database, and the National Patient Register with added DRG-information. The analysis follows a multilevel set-up, where cost drivers at patient level are analysed in a set of general linear regression models including complications and mortality as quality measures. At the hospital level of the analysis, we analyse deviations of observed costs from risk-adjusted costs and compare these to deviations of observed quality from risk-adjusted quality.We find, not surprisingly, that a number of patient characteristics, including case-mix and severity, have a major impact on treatment costs. At patient level, both complications and mortality are associated with increased costs. At hospital department level, results are not straightforward, but could indicate a U-shaped association.We conclude that the relation between costs and quality is not straightforward, at least not at department level. Our results indicate, albeit vaguely, a U-shaped relation between quality, in terms of fewer surgical complications than expected, and costs at department level, since our results suggest that increasing costs for vascular departments are associated with increased quality when costs are high and decreased quality when costs are low. For mortality however, we have not been able to establish a clear relation to costs.

[Evaluation of the length of hospital stay in cases of coronary artery bypass graft by payer]

OBJECTIVE

The length of hospital stay (LOS) allows for the evaluation of the efficiency of a given hospital facility, as well as providing a basis for measuring the number of hospital beds required to provide assistance to the population in a specific area.

METHODS

A retrospective survey was conducted on a database of 3,010 patients submitted to coronary artery bypass graft (CABG) from July, 2009 to July, 2010.

RESULTS

Among 2,840 patients that met the inclusion criteria, 92.1% had their surgery paid by the Brazilian Unified Health System (Sistema Único de Saúde - SUS) and 7.9% by health plans or themselves (non-SUS). 70.2% were male, the average age was 61.9 years old, and the average risk score (EuroScore) was 2.9%. The SUS and the non-SUS groups did not differ regarding the waiting time for surgery (WTS) (2.59± 3.10 vs. 3,02±3,70 days for SUS and non-SUS respectively; p=0.790), but did differ with respect to the length of stay in intensive care unit (2.17±3.84 vs. 2.52±2.72 days for SUS and non-SUS respectively; p < 0.001), the postoperative period (8.34±10.32 vs. 9,19±6.97 days for SUS and non-SUS respectively; p < 0.001), and the total LOS (10.93±11.08 vs. 12.21±8.20 days for SUS and non-SUS respectively; p < 0.001). The non-SUS group had more events of non-elective surgery (p=0.002) and surgery without cardiopulmonary bypass (p=0.012). The groups did not differ regarding the associated valve procedure (p=0.057) nor other non-valve procedures (p=0.053), but they did differ with respect to associated non-cardiac procedures (p=0.017). ICU readmission (p=0.636) and postoperative complications rates were similar in both groups (p=0.055).

CONCLUSION

The Non-SUS group showed longer LOS compared to the SUS group.