Heart failure is a common reason for respiratory failure in ICU patients. The rapid and accurate differentiation of heart failure from other causes of respiratory failure remains a clinical challenge. BNP levels are significantly higher in patients with congestive heart failure as compared to patients with respiratory failure due to other causes. Therefore, rapid measurement of BNP might be very helpful in establishing or excluding the diagnosis of heart failure in patients with respiratory failure in the ICU. The aim is to test the hypothesis that a BNP guided diagnostic strategy would improve the evaluation and management of patients presenting with primary (on admission) or secondary (while in the ICU) respiratory failure in the ICU and thereby reduce total treatment time and total cost of treatment. Primary endpoints are time to discharge and total cost of treatment. Secondary endpoints are ICU length of stay, ICU cost, in-hospital mortality, 30-day mortality, cost-effectiveness, 6 and 12 month mortality, 6 and 12 month dyspnea score.
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Time to discharge
Timeframe: discharge
Total cost of treatment
Timeframe: until discharge