The Value of Clinical Frailty Scale (CFS) as a Prognostic Tool in Predicting Mortality in COVID-19—A Retrospective Cohort Study

Predicting mortality risk in hospitalized COVID-19 patients: an early model utilizing clinical symptoms

BACKGROUND

Despite global efforts to control the COVID-19 pandemic, the emergence of new viral strains continues to pose a significant threat. Accurate patient stratification, optimized resource allocation, and appropriate treatment are crucial in managing COVID-19 cases. To address this, a simple and accurate prognostic tool capable of rapidly identifying individuals at high risk of mortality is urgently needed. Early prognosis facilitates predicting treatment outcomes and enables effective patient management. The aim of this study was to develop an early predictive model for assessing mortality risk in hospitalized COVID-19 patients, utilizing baseline clinical factors.

METHODS

We conducted a descriptive cross-sectional study involving a cohort of 375 COVID-19 patients admitted and treated at the COVID-19 Patient Treatment Center in Military Hospital 175 from October 2021 to December 2022.

RESULTS

Among the 375 patients, 246 and 129 patients were categorized into the survival and mortality groups, respectively. Our findings revealed six clinical factors that demonstrated independent predictive value for mortality in COVID-19 patients. These factors included age greater than 50 years, presence of multiple underlying diseases, dyspnea, acute confusion, saturation of peripheral oxygen below 94%, and oxygen demand exceeding 5 L per minute. We integrated these factors to develop the Military Hospital 175 scale (MH175), a prognostic scale demonstrating significant discriminatory ability with an area under the curve (AUC) of 0.87. The optimal cutoff value for predicting mortality risk using the MH175 score was determined to be ≥ 3 points, resulting in a sensitivity of 96.1%, specificity of 63.4%, positive predictive value of 58%, and negative predictive value of 96.9%.

CONCLUSIONS

The MH175 scale demonstrated a robust predictive capacity for assessing mortality risk in patients with COVID-19. Implementation of the MH175 scale in clinical settings can aid in patient stratification and facilitate the application of appropriate treatment strategies, ultimately reducing the risk of death. Therefore, the utilization of the MH175 scale holds significant potential to improve clinical outcomes in COVID-19 patients.

TRIAL REGISTRATION

An independent ethics committee approved the study (Research Ethics Committee of Military Hospital 175 (No. 3598GCN-HDDD; date: October 8, 2021), which was performed in accordance with the Declaration of Helsinki, Guidelines for Good Clinical Practice.

A longitudinal prospective cohort study of health-related quality of life assessment in outpatient adults with post-COVID-19 conditions

Background

Few studies have reported the long-term effects of post-COVID-19 condition (PCC) on health-related quality of life (HRQoL). We aim to assess HRQoL in outpatient adults with PCC over a 2-year period.

Methods

This prospective longitudinal cohort study compared 413 PCC participants (cases) to 520 COVID-19-positive participants who recovered (controls). HRQoL was assessed with the EuroQol 5-Dimension 5-Level preference-based questionnaire (EQ-5D-5L) and fitness and frailty with the Clinical Frailty Scale (CFS) at each visit for up to 24 months.

Results

Among a total of 933 participants, 413 (42.3%) met the definition of PCC (cases) and 520 (55.7%) did not (controls). Overall, there was a significant difference in EQ-5D-5L index score from 3 months post-infection up to 18 months between cases and controls (p < 0.001). This score continued to decline up to 18 months in the PCC group only. Most impaired EQ-5D-5L dimensions at 12 months in the PCC group included pain/discomfort, anxiety/depression, and usual activities.

Conclusions

This is one of the first studies to report 2-year alterations of HRQoL in outpatients with PCC. Our study highlights the need for continued monitoring for PCC long-term consequences. Given the high proportion of PCC participants experiencing anxiety/depression problems, further studies are needed to specifically address mental health in this population.

Assessing frailty in elderly patients with hip fractures: A retrospective review comparing geriatrician and orthopedic trainee assessments

To assess the correlation of orthopedic surgery residents compared with expert geriatricians in the assessment of frailty stage using the Clinical Frailty Scale (CFS) in patients with hip fractures. A retrospective chart review was performed from January 1, 2015 to December 31, 2019. Patients admitted with a diagnosis of hip fracture were identified. Those patients with a CFS score completed by orthopedic residents with subsequent CFS score completed by a geriatrician during their admission were extracted. Six hundred and forty-eight patients over age 60 (mean 80.5 years, 73.5% female) were admitted during the study period. Orthopaedic residents completed 286 assessments in 44% of admissions. Geriatric medicine consultation was available for 215 patients such that 93 patients were assessed by both teams. Paired CFS data were extracted from the charts and tested for agreement between the 2 groups of raters. CFS assessments by orthopedic residents and geriatrician experts were significantly different at P < .05; orthopedic residents typically assessed patients to be one CFS grade less frail than geriatricians. Despite this, the CFS assessments showed good agreement between residents and geriatricians. Orthopaedic surgery residents are reliable assessors of frailty but tend to underestimate frailty level compared with specialist geriatricians. Given the evidence to support models such as orthogeriatrics to improve outcomes for frail patients, our findings suggest that orthopedic residents may be well positioned to identify patients who could benefit from such early interventions. Our findings also support recent evidence that frailty assessments by orthopedic surgeons may have predictive validity. Low rates of initial frailty assessment by orthopedic residents suggests that further work is required to integrate more global comprehensive care.

Approach to COVID-19 in older adults and indications for improving the outcomes

Background: COVID-19 continues to present challenges in the care of older adults with frailty and/or comorbidities and very old patients, who can be hospitalized with severe COVID-19 despite full vaccination. Frailty is a heterogeneous syndrome characterized by an increased aging-related vulnerability due to a reduced physiological reserve and function of systemic organs, and is associated with an impairment of activities of daily living. Frail older adults remain at elevated risk of mortality from COVID-19 compared to older adults without frailty, and some pre-existing risk factors such as malnutrition, prolonged bed rest, and the association with comorbidities can aggravate the SARS-CoV-2 infection. Furthermore, the severity of COVID-19 can impact on long-term functioning of older patients surviving from the infection. Persistent symptoms are another emerging problem of the post-vaccination phase of pandemic, as most patients suffer from chronic symptoms which can become debilitating and affect the daily routine. Aim of this review: In this complex relationship, the evaluation of COVID-19 in vulnerable categories is still a matter of high interest and personalized care plans based on a comprehensive geriatric assessment, tailored interventions; specific therapeutic algorithms among older adults are thus recommended in order to improve the outcomes.

Association between Clinical Frailty Scale (CFS) and clinical presentation and outcomes in older inpatients with COVID-19

BACKGROUND

Frailty is a physiological condition characterized by a decreased reserve to stressors. In patients with COVID-19, frailty is a risk factor for in-hospital mortality. The aim of this study was to assess the relationship between clinical presentation, analytical and radiological parameters at admission, and clinical outcomes according to frailty, as defined by the Clinical Frailty Scale (CFS), in old people hospitalized with COVID-19.

MATERIALS AND METHODS

This retrospective cohort study included people aged 65 years and older and admitted with community-acquired COVID-19 from 3 March 2020 to 31 April 2021. Patients were categorized using the CFS. Primary outcomes were symptoms of COVID-19 prior to admission, mortality, readmission, admission in intensive care unit (ICU), and need for invasive mechanical ventilation. Analysis of clinical symptoms, clinical outcomes, and CFS was performed using multivariable logistic regression, and results were expressed as odds ratios (ORs) and 95% confidence intervals (CIs).

RESULTS

Of the 785 included patients, 326 (41.5%, 95% CI 38.1%-45.0%) were defined as frail (CFS ≥ 5 points): 208 (26.5%, 95% CI 23.5%-29.7%) presented mild-moderate frailty (CFS 5-6 points) and 118 (15.0%, 95% CI 12.7%-17.7%), severe frailty (7-9 points). After adjusting for epidemiological variables (age, gender, residence in a nursing home, and Charlson comorbidity index), frail patients were significantly less likely to present dry cough (OR 0.58, 95% CI 0.40-0.83), myalgia-arthralgia (OR 0.46, 95% CI 0.29-0.75), and anosmia-dysgeusia (OR 0.46, 95% CI 0.23-0.94). Confusion was more common in severely frail patients (OR 3.14; 95% CI 1.64-5.97). After adjusting for epidemiological variables, the risk of in-hospital mortality was higher in frail patients (OR 2.79, 95% CI 1.79-4.25), including both those with mild-moderate frailty (OR 1.98, 95% CI 1.23-3.19) and severe frailty (OR 5.44, 95% CI 3.14-9.42). Readmission was higher in frail patients (OR 2.11, 95% CI 1.07-4.16), but only in mild-moderate frailty (OR 2.35, 95% CI 1.17-4.75)..

CONCLUSION

Frail patients presented atypical symptoms (less dry cough, myalgia-arthralgia, and anosmia-dysgeusia, and more confusion). Frailty was an independent predictor for death, regardless of severity, and mild-moderate frailty was associated with readmission.