The colored probes of an electronic thermometer are indicative of:

Correct Answer: C

Rationale: Blue is for oral and red is for rectal, is correct based on common conventions in medical settings. Electronic thermometers often use color-coded probes to prevent cross-contamination: blue for oral use and red for rectal, reflecting their distinct anatomical applications. Blue and red are both for oral, ignores site-specific hygiene needs. Blue is for rectal and red is for oral, reverses the typical standard. Blue and red are both for rectal, disregards oral measurement needs. This color system aids quick identification, ensuring the oral probe isnt used rectally (risking infection) and vice versa. While manufacturer variations exist, C aligns with widespread nursing practice for clarity and safety, making it the correct answer.

Correct Answer: A

Rationale: In emergencies, rapid pulse detection is critical. Carotid is easily accessible, strong, and reliable even in low perfusion, making it standard (e.g., CPR). Apical requires a stethoscope, slowing assessment. Radial may be weak in shock. Temporal is less prominent. Choice A is correct, aligning with emergency protocols (e.g., AHA) for quick, effective pulse checks in urgent scenarios.

Correct Answer: B

Rationale: Chronic lung disease (e.g., COPD) with smoking risks CO2 retention; cautious oxygen use prevents suppressing hypoxic drive while addressing shortness of breath. Paper bag is for hyperventilation. High oxygen risks respiratory depression. CO2 worsens hypoxia. Choice B is correct, per respiratory nursing guidelines.

Correct Answer: A

Rationale: Blood pressure is the force of blood against artery walls , measured as systolic and diastolic pressures. Blood volume influences it but isn't the definition. Heartbeats define pulse, not BP. ‘All' is incorrect. Choice A is correct, per cardiovascular nursing principles, distinguishing BP as a pressure metric critical for assessing circulation and organ perfusion.

Correct Answer: D

Rationale: Respiratory distress includes grunting and nasal flaring as effort signs, raspy breathing from obstruction, and panicked look/sweating from stressall are indicators. Choice D is correct, as nurses identify these clinical signs per respiratory assessment protocols (e.g., PALS), prompting urgent intervention for airway or oxygenation problems.