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Recovery rate and prognosis in older persons who develop acute lung injury and the acute respiratory distress syndrome.
Ann Intern Med. 2002 Jan 01; 136(1):25-36.AIM

Abstract

BACKGROUND

The incidence of acute respiratory failure requiring mechanical ventilation increases 10-fold from the ages of 55 to 85 years, yet the rate of recovery and outcomes in older persons who develop acute lung injury are poorly defined.

OBJECTIVE

To examine age as an independent risk factor in recovery and intensive care unit discharge after acute lung injury.

DESIGN

Prospective cohort study.

SETTING

10 U.S. university-based medical centers.

PATIENTS

902 mechanically ventilated patients enrolled in randomized, controlled trials for the treatment of acute lung injury. All patients were managed according to a standardized protocol for ventilator management and weaning.

MEASUREMENTS

Frequency and time to achieve well-defined recovery landmarks, duration of ventilation and intensive care unit stay, and survival.

RESULTS

Median duration of mechanical ventilation was 19 days (interquartile range, 7 to >28 days) for patients 70 years of age or older (n = 173) compared with 10 days (interquartile range, 5 to 26 days) for patients younger than 70 years of age (n = 729) (P < 0.001). The duration of intensive care unit stay was 21 days for the older group (interquartile range, 11 to >28 days) and 16 days for the younger group (8 to >28 days) (P = 0.004). Survival rates decreased across increasing decades of age (P < 0.001): Patients younger than 70 years of age had a greater 28-day survival rate than patients 70 years of age or older (74.6% vs. 50.3%; P < 0.001). The proportion of survivors achieving physiologic recovery landmarks did not differ between the older and younger age groups, and the median time to pass a 2-hour spontaneous breathing trial was similar between both the older and younger patients (4 days vs. 5 days; P > 0.2). After passing a spontaneous breathing trial, however, older patients required 1 more day than younger patients to achieve unassisted breathing (P = 0.002) and 3 more days to leave the intensive care unit (P = 0.005). In a multivariable Cox proportional hazards analysis, age of 70 years or older was a strong predictor of in-hospital death (hazard ratio, 2.5 [95% CI, 2.0 to 3.2]; P < 0.001).

CONCLUSIONS

Although the survival rate among patients 70 years of age or older was high, these patients were twice as likely to die of acute lung injury compared with their younger counterparts, even after adjustment for covariates. Older survivors recovered from respiratory failure and achieved spontaneous breathing at the same rate as younger patients but had greater difficulty achieving liberation from the ventilator and being discharged from the intensive care unit.

Authors+Show Affiliations

Division of Allergy, Center for Health Services Research, 6th Floor, #6109 Medical Center East, Vanderbilt University Medical Center, Nashville, TN 37232-8300, USA.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Clinical Trial
Journal Article
Randomized Controlled Trial
Research Support, U.S. Gov't, P.H.S.

Language

eng

PubMed ID

11777361

Citation

Ely, E Wesley, et al. "Recovery Rate and Prognosis in Older Persons Who Develop Acute Lung Injury and the Acute Respiratory Distress Syndrome." Annals of Internal Medicine, vol. 136, no. 1, 2002, pp. 25-36.
Ely EW, Wheeler AP, Thompson BT, et al. Recovery rate and prognosis in older persons who develop acute lung injury and the acute respiratory distress syndrome. Ann Intern Med. 2002;136(1):25-36.
Ely, E. W., Wheeler, A. P., Thompson, B. T., Ancukiewicz, M., Steinberg, K. P., & Bernard, G. R. (2002). Recovery rate and prognosis in older persons who develop acute lung injury and the acute respiratory distress syndrome. Annals of Internal Medicine, 136(1), 25-36.
Ely EW, et al. Recovery Rate and Prognosis in Older Persons Who Develop Acute Lung Injury and the Acute Respiratory Distress Syndrome. Ann Intern Med. 2002 Jan 1;136(1):25-36. PubMed PMID: 11777361.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Recovery rate and prognosis in older persons who develop acute lung injury and the acute respiratory distress syndrome. AU - Ely,E Wesley, AU - Wheeler,Arthur P, AU - Thompson,B Taylor, AU - Ancukiewicz,Marek, AU - Steinberg,Kenneth P, AU - Bernard,Gordon R, PY - 2002/1/5/pubmed PY - 2002/1/30/medline PY - 2002/1/5/entrez SP - 25 EP - 36 JF - Annals of internal medicine JO - Ann. Intern. Med. VL - 136 IS - 1 N2 - BACKGROUND: The incidence of acute respiratory failure requiring mechanical ventilation increases 10-fold from the ages of 55 to 85 years, yet the rate of recovery and outcomes in older persons who develop acute lung injury are poorly defined. OBJECTIVE: To examine age as an independent risk factor in recovery and intensive care unit discharge after acute lung injury. DESIGN: Prospective cohort study. SETTING: 10 U.S. university-based medical centers. PATIENTS: 902 mechanically ventilated patients enrolled in randomized, controlled trials for the treatment of acute lung injury. All patients were managed according to a standardized protocol for ventilator management and weaning. MEASUREMENTS: Frequency and time to achieve well-defined recovery landmarks, duration of ventilation and intensive care unit stay, and survival. RESULTS: Median duration of mechanical ventilation was 19 days (interquartile range, 7 to >28 days) for patients 70 years of age or older (n = 173) compared with 10 days (interquartile range, 5 to 26 days) for patients younger than 70 years of age (n = 729) (P < 0.001). The duration of intensive care unit stay was 21 days for the older group (interquartile range, 11 to >28 days) and 16 days for the younger group (8 to >28 days) (P = 0.004). Survival rates decreased across increasing decades of age (P < 0.001): Patients younger than 70 years of age had a greater 28-day survival rate than patients 70 years of age or older (74.6% vs. 50.3%; P < 0.001). The proportion of survivors achieving physiologic recovery landmarks did not differ between the older and younger age groups, and the median time to pass a 2-hour spontaneous breathing trial was similar between both the older and younger patients (4 days vs. 5 days; P > 0.2). After passing a spontaneous breathing trial, however, older patients required 1 more day than younger patients to achieve unassisted breathing (P = 0.002) and 3 more days to leave the intensive care unit (P = 0.005). In a multivariable Cox proportional hazards analysis, age of 70 years or older was a strong predictor of in-hospital death (hazard ratio, 2.5 [95% CI, 2.0 to 3.2]; P < 0.001). CONCLUSIONS: Although the survival rate among patients 70 years of age or older was high, these patients were twice as likely to die of acute lung injury compared with their younger counterparts, even after adjustment for covariates. Older survivors recovered from respiratory failure and achieved spontaneous breathing at the same rate as younger patients but had greater difficulty achieving liberation from the ventilator and being discharged from the intensive care unit. SN - 0003-4819 UR - https://www.unboundmedicine.com/medline/citation/11777361/Recovery_rate_and_prognosis_in_older_persons_who_develop_acute_lung_injury_and_the_acute_respiratory_distress_syndrome_ L2 - http://ovidsp.ovid.com/ovidweb.cgi?T=JS&amp;PAGE=linkout&amp;SEARCH=11777361.ui DB - PRIME DP - Unbound Medicine ER -