Which of the following samples is used to measure blood pH and blood gases?

A. Allergies: Allergy information is crucial for preventing adverse reactions to medications and treatments, so it often appears as a pop-up alert in electronic health records (EHRs) to ensure that healthcare providers are aware of any potential risks.
B. Illnesses: Illnesses are typically documented in the patient's history, but they do not usually trigger a pop-up alert unless they are related to specific critical conditions or current treatment concerns.
C. Hospitalizations: Hospitalization history is important but is typically found in the patient's medical history section rather than as an immediate alert in the EHR.
D. Surgeries: Surgical history is generally noted in the patient’s medical history, and while important, it does not usually appear as a pop-up alert unless it directly impacts current treatment.

A. Offer the patient their elbow for guidance: Offering the elbow is a common and safe method of guiding patients with visual impairments, including presbyopia, because it allows the patient to follow the assistant's movements more easily.
B. Take the patient's hand. Taking the patient's hand might make the patient feel less secure and can lead to an imbalance. It is less effective than offering the elbow.
C. Lead the patient by their arm: Leading the patient by their arm can be uncomfortable and does not provide the same level of control as offering the elbow.
D. Guide the patient by holding their waist: Holding the waist is inappropriate as it invades personal space and might make the patient uncomfortable.