Correct Answer: B

Rationale: The research design being referred to in the question is an experimental design. An experimental study involves the manipulation of an independent variable, which is the intervention in this case, to determine its effect on a dependent variable. "Blinding" in research refers to the practice of withholding information about the intervention from certain individuals involved in the study, such as researchers, participants, or outcome assessors. Blinding is commonly used in experimental studies to reduce bias and ensure the integrity of the study results. This combination of intervention and blinding is a hallmark of experimental research designs.

Correct Answer: B

Rationale: The gallbladder is the structure responsible for storing and concentrating bile produced by the liver until it is needed for digestion. Bile is a digestive fluid that helps in the breakdown of fats during the digestive process. When food containing fats enters the small intestine, the gallbladder contracts and releases bile into the small intestine to aid in the digestion and absorption of fats. The gallbladder acts as a reservoir for bile, storing it until it is needed for digestion.

Correct Answer: D

Rationale: A directional hypothesis predicts the direction of the relationship between variables. In this case, the statement "A significant relationship exists between the caring behaviors of the staff-nurses and degree of satisfaction of ostomized patients" clearly indicates the direction of the expected relationship. This hypothesis suggests that there will be a positive or negative relationship between the caring behaviors of staff nurses and the satisfaction of ostomized patients. The terms "significant relationship" and "degree of satisfaction" indicate that the hypothesis is specific and measurable, making it suitable for testing through research methods.

Correct Answer: A

Rationale: I. It blocks the urethra: Benign Prostatic Hyperplasia (BPH) is a condition in which the prostate gland enlarges and can squeeze the urethra, leading to urinary symptoms such as difficulty urinating. This statement correctly explains one of the effects of BPH on the urinary system.

Correct Answer: C

Rationale: In the provided scenario, the patient is scheduled for Lithotripsy under spinal anesthesia. This means that the nurse needs to communicate with the department of anesthesia to coordinate and prepare for the procedure. Anesthesia departments are responsible for administering various types of anesthesia, including spinal anesthesia, to ensure patients are comfortable and pain-free during medical procedures. Therefore, contacting the department of anesthesia is crucial in this situation to ensure that the necessary arrangements are in place for the patient's lithotripsy procedure.