Title: Comparison of Scoring Systems for Mortality Prediction in Acute Exacerbation of Chronic Obstructive Pulmonary Disease

Authors: Dr Neethu Thambi, Dr K V Padmanabhan, Dr Manoj D K, Dr Rajani M.

 DOI:  https://dx.doi.org/10.18535/jmscr/v5i3.130

Abstract

Acute exacerbation of chronic obstructive pulmonary disease (AECOPD) is a frequent cause of emergency admission. A scoring system is invaluable in predicting mortality and guiding therapeutic interventions.

Aims: Comparison of DECAF,  BAP-65, CURB-65, CAPS, APACHE II risk scores in predicting in hospital mortality in AECOPD.

Methods: 150 patients of AECOPD, admitted during ten month period were scored at admission using all 5 scores and their ability to predict  in-hospital mortality was analysed.  The cut off value of scores that best predicted mortality was identified. Individual parameters that correlated best with mortality were also documented.
Results: DECAF score>=2, with an AUROC of 0.729, correlated best with mortality. APACHE 2 score>=18 could predict in hospital mortality with an AUROC of 0.700, CURB-65>=2 predicted mortality with an AUROC of 0.709.Parameters that were most closely associated with mortality were Altered Mentation, Respiratory rate>30/min, Hyponatremia (S.Na+ <130mEq/L, Hypoalbuminemia (<3.5g/dL) .

Conclusion: DECAF score(>=2)  best correlates with in hospital mortality. Individual parameters of Altered Mentation(GCS<15),  Respiratory rate>30/min,  Baseline dyspnoea of eMRCD 5b, Elevated WBC count (>40000),  Hyponatremia (S.Na+ <130mEq/L, Hypoalbuminemia (<3.5g/dL) correlates best with mortality.

Keywords:  acute exacerbation, COPD, DECAF, CAPS, APACHE II, CURB 65, BAP.

References

1.      GOLD- Global strategy for the diagnosis, management and prevention of Chronic Obstructive Pulmonary Disease

2.      Yousif M, El Wahsh RA. Predicting  in-hospital mortality in acute exacerbation of COPD: Is there a golden score? Egypt J Chest Dis Tuberc. 2016;65(3):579–84.

3.      Steer J, Gibson J, Bourke SC. The DECAF Score: predicting hospital mortality in exacerbations of chronic obstructive pulm-onary disease. Thorax [Internet]. 2012 Nov [cited 2016 Nov 21];67(11):970–6. Available from: http://www.ncbi.nlm.-nih.gov/pubmed/22895999

4.      Wildman MJ, Harrison DA, Welch CA, Sanderson C. A new measure of acute physiological derangement for patients with exacerbations of obstructive airways disease: The COPD and Asthma Physiol-ogy Score ARTICLE IN PRESS. Respir Med. 2007;101.

5.      Zhang M, Zhao Y, Luo Y, Wang X, Yang Y, Lin Y. [The value of coexisting pneumonia and British Thoracic Society CURB-65 score in predicting early mort-ality rate in patients with acute exacerb-ation of chronic obstructive pulmonary disease]. Zhonghua Jie He He Hu Xi Za Zhi [Internet]. 2013 Apr [cited 2016 Nov 21];36(4):269–73. Available from: http://www.ncbi.nlm.nih.gov/pubmed/23945340

6.      Knaus WA, Draper EA, Wagner DP, Zimmerman JE. APACHE II: a severity of disease classification system. Crit Care Med [Internet]. 1985 Oct [cited 2016 Nov 22];13(10):818–29. Available from: http://www.ncbi.nlm.nih.gov/pubmed/3928249

7.      Nafae R, Embarak S, Gad DM. Value of the DECAF score in predicting hospital mortality in patients with acute exacerbation of chronic obstructive pulmonary disease admitted to Zagazig University Hospitals, Egypt. Egypt J Chest Dis Tuberc. 2015;64(1):35–40.0

8.      Yousif  M, El Wahsh RA. Predicting in-hospital mortality in acute exacerbation of COPD: Is there a golden score? Egypt J Chest Dis Tuberc. 2016;65(3):579–84.

9.      S.P. Patil, J.A. Krishnan, N. Lechtzin, et al, In-hospital mortality following acute exacerbations of chronic obstructive pulmonary disease, Arch. Intern. Med. 163 (2003) 1180–1186.

10.  A. Bustamante-Fermosel, J.M. De Miguel-Yanes, M. Duffort-Falco, et al, Mortality-related factors after hospitalization for acute exacerbation of chronic obstructive pulmonary disease: the burden of clinical features, Am. J. Emerg. Med. 25 (2007) 515–522.

11.  M.H. Zidan, A.K. Rabie, M.M. Megahed, M.Y. Abdel-Khalek, The usefulness of the DECAF score in predicting hospital mortality in acute exacerbations of chronic obstructive pulmonary disease, Egypt. J. Chest Dis. Tuberculosis 64 (2015) 75–80

12.  A.F. Shorr, X. Sun, R.S. Johannes, A. Yaitanes, Y.P. Tabak, Validation of a novel risk score for severity of illness in acute exacerbations of COPD, Chest 140 (5) (2011) 1177–1183

13.  Knaus WA, Draper EA, Wagner DP, Zimmerman JE. APACHE II: a severity of disease classification system. Crit Care Med [Internet]. 1985 Oct [cited 2016 Nov 22];13(10):818–29. Available from: http://www.ncbi.nlm.nih.gov/pubmed/3928249

14.  Wildman MJ, Harrison DA, Welch CA, Sanderson C. A new measure of acute physiological derangement for patients with exacerbations of obstructive airways disease: The COPD and Asthma Physiology Score ARTICLE IN PRESS. Respir Med. 2007;101.

Corresponding Author

Dr Neethu Thambi

Junior Resident, ACME, Pariyaram, Kannur, Kerala

Email: This email address is being protected from spambots. You need JavaScript enabled to view it., Phone: 9744658925