Please select the eligibility criteria that correspond to the clinical trial below.
Title: Corticosteroid Treatment for Community-Acquired Pneumonia A Randomized, Double-blind Study- The STEP Trial
Brief Summary: Background: An intact hypothalami-pituitary-adrenal (HPA) axis with an effective intracellular anti-inflammatory activity of glucocorticoids is indispensable for host survival during stress upon exposure to an infectious agent. Community-acquired pneumonia (CAP) is characterized by significant mortality and increased circulating inflammatory cytokines. Despite adequate antimicrobial therapy mortality rates for CAP have not changed over several decades. The use of corticosteroids in patients with CAP is inconclusive.

Study aim: To compare a 7 days treatment with prednisone and placebo in patients with community-acquired pneumonia with respect to time to clinical stability.

Study hypothesis: The investigators hypothesize that use of corticosteroids will lead to a 25% relative risk reduction for death and clinical instability.

Study type: randomized double blind intervention study

Patients: 800 patients with community-acquired pneumonia


Options:
A: Inclusion Criteria:

1. Patients admitted to any of the five intensive care units
2. Older than 18 years
3. Nutritional risk screening score (NRS) higher or equal to three upon ICU admission

Exclusion Criteria:

1. Patients with a do not resuscitate (DNR) code or moribund at the time of ICU admission
2. Patients already enrolled in another trial
3. Patients transferred from another intensive care unit with an established nutritional therapy
4. Patients suffering from ketoacidotic or hyperosmolar coma on admission
5. Patients with a body mass index (BMI) below 17 kg/m\^2
6. Short bowel syndrome
7. Patients known to be pregnant or nursing
8. Patients on mechanical ventilation at home
9. NRS score lower than three
10. Patient readmitted to ICU after randomization to the EPaNIC trial.
11. Patient not critically ill on admission. (No clinical indication for central intravenous catheter or patient ready for oral nutrition on admission.)
B: Inclusion Criteria:

* males and females,
* between 18 and 75 year old
* who present a burned surface more than 30% of the body surface
* who need catecholamine infusion
* between J0 and J3 after the injury.

Exclusion Criteria:

* pregnancy,
* trauma,
* sepsis,
* cardiac insufficiency,
* AIDS,
* etomidate administration
C: Inclusion Criteria:

* Adults admitted to ICU and anticipated to require intensive care for at least a few days

Exclusion Criteria:

* Expected short ICU stay
* Therapy restricted upon admission
* Surgical ICU patients
* Other studies
* Below 18 years
* Pregnancy
D: Inclusion Criteria:

1. Patients 18 years of age or older admitted for hospitalization from the community or a nursing home with CAP.
2. CAP will be defined by a new infiltrate on chest radiograph and the presence of one or several of the following acute respiratory signs or symptoms:

   * cough
   * sputum production
   * dyspnea
   * core body temperature \>38.0° C
   * auscultatory findings of abnormal breath sounds and rales
   * leukocyte count \>10 or \<4 x 109 cells L-1 (1)

Exclusion Criteria:

1. Patients or family members unable to give written informed consent, e.g. with severe dementia.
2. Patients with active intravenous drug use.
3. Severe immunosuppression (e.g. patients infected with human immunodeficiency virus infection and a CD4 count below 350 x 109/L, patients on immunosuppressive therapy after solid organ transplantation and neutropenic patients with neutrophil count \< 500 x 109/L and patients under chemotherapy with neutrophils 500-1000 x 109/L with an expected decrease to values \< 500 x 109/L); patients with cystic fibrosis as well as patients with active tuberculosis.
4. Patients with acute burn injury
5. Patients with acute gastrointestinal bleeding within 3 months of the current hospitalization
6. Patients with an acute concomitant condition requiring more than 0.5mg/kg/d prednisone equivalent
7. Pregnancy or breast feeding
8. Patients with known adrenal insufficiency

Answer: D