Critical Illness — Nutritional Needs and Intake on Clinical Outcomes in Mechanically Ventilated Critically Ill Elderly Patients
Citation(s)
Hsu PH, Lee CH, Kuo LK, Kung YC, Chen WJ, Tzeng MS Determination of the energy requirements in mechanically ventilated critically ill elderly patients in different BMI groups using the Harris-Benedict equation. J Formos Med Assoc. 2018 Apr;117(4):301-307
Hsu PH, Lee CH, Kuo LK, Kung YC, Chen WJ, Tzeng MS Higher Energy and Protein Intake from Enteral Nutrition May Reduce Hospital Mortality in Mechanically Ventilated Critically Ill Elderly Patients. International Journal of Gerontology. Available online 26 March 2018. https://doi.org/10.1016/j.ijge.2018.03.001
Clinical Dietitian, Dietetic Service, Mackay Memorial Hospital
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.
