Co-morbidity and acute decompensations of COPD requiring non-invasive positive-pressure ventilation

Intensive Care Med. 2004 Sep;30(9):1747-54. doi: 10.1007/s00134-004-2368-4. Epub 2004 Jul 17.


Objective: To assess the prevalence and the impact of chronic and/or acute non-respiratory co-morbidity on short and longer-term outcome of non-invasive positive pressure ventilation (NIPPV) in acute decompensations of chronic obstructive pulmonary disease (COPD) with acute hypercapnic respiratory failure (AHRF).

Design and setting: An observational study in a three-bed respiratory monitoring unit in a respiratory ward of a non-university hospital.

Patients: We grouped 120 consecutive COPD patients requiring NIPPV for AHRF (pH 7.28+/-0.05, PaO2/FIO2 ratio 192+/-63, PaCO2 78.3+/-12.3 mmHg) according to whether NIPPV succeeded (n=98) or failed (n=22) in avoiding the need for endotracheal intubation and whether alive (n=77) or dead (n=42) at 6 months.

Measurements and results: The prevalence of chronic and acute co-morbidity was, respectively, 20% and 41.7%; most of the cases were cardiovascular. In-hospital NIPPV failure was greater in patients with than in those without chronic (33.3% vs. 14.6%) or acute co-morbidity (32% vs. 8.6%). Six-month mortality was worse in patients with than in those without chronic (54.2% vs. 30.5%) or more than one acute co-morbidity (66.7% vs. 30.8%). Multiple regression analysis predicted in-hospital NIPPV failure by acute co-morbidity and forced expiratory volume in 1 s, while death at 6 months was predicted by having more than one acute co-morbidity, non-cardiovascular chronic co-morbidity and Activities of Daily Living score.

Conclusions: Chronic and acute co-morbidities are common in COPD patients with AHRF needing NIPPV and their presence influences short and longer-term outcome.

Publication types

  • Clinical Trial

MeSH terms

  • Acute Disease
  • Aged
  • Comorbidity
  • Female
  • Heart Failure / etiology
  • Heart Failure / therapy*
  • Humans
  • Intermittent Positive-Pressure Ventilation*
  • Italy / epidemiology
  • Male
  • Middle Aged
  • Multivariate Analysis
  • Prevalence
  • Prognosis
  • Pulmonary Disease, Chronic Obstructive / complications
  • Pulmonary Disease, Chronic Obstructive / epidemiology
  • Pulmonary Disease, Chronic Obstructive / therapy*
  • Respiratory Function Tests
  • Time Factors
  • Treatment Outcome