Critical Care Nursing Practice Questions

Correct Answer: C

Rationale: The correct answer is C: High resolution multidetector CT angiogram. This diagnostic procedure is required for a definitive diagnosis of pulmonary embolism because it provides detailed imaging of the pulmonary vasculature, allowing visualization of blood clots in the pulmonary arteries. A: Arterial blood gas (ABG) analysis does not directly diagnose pulmonary embolism but may show signs of hypoxemia or respiratory alkalosis, which can be seen in some cases of pulmonary embolism. B: Chest x-ray examination may show nonspecific findings such as atelectasis or pleural effusion but cannot definitively diagnose pulmonary embolism. D: Ventilation-perfusion scanning is another imaging modality used in the diagnosis of pulmonary embolism, but it is less commonly used compared to CT angiogram due to lower sensitivity and specificity.

Correct Answer: A

Rationale: The correct answer is A: The FACES scale. This scale uses facial expressions to assess pain, making it suitable for a patient who is unable to verbalize. The nurse can show the patient a series of faces depicting varying levels of pain and ask them to point to the one that best represents their pain level. This method is non-verbal and easy for patients to understand. The other choices are incorrect: B: The Pain Intensity Scale requires the patient to rate their pain on a numerical scale, which may be difficult for a non-verbal patient. C: The PQRST method is a mnemonic for assessing pain characteristics (provocation, quality, region, severity, timing), but it requires patient communication. D: The Visual Analogue Scale involves marking a point on a line to indicate pain intensity, which is not suitable for a non-verbal patient.

Correct Answer: B

Rationale: Certainly. Hypovolemia, or low blood volume, can lead to low cardiac output and cardiac index because the heart has less blood to pump, resulting in reduced circulation. Exercise typically increases cardiac output to meet increased demand. Myocardial infarction may reduce cardiac output temporarily, but not consistently. Shock, a condition where the body's tissues do not receive enough oxygen and nutrients, can lead to low cardiac output, making it a possible cause.

Correct Answer: D

Rationale: The correct answer is D, The Joint Commission, because it is a regulatory body that accredits healthcare organizations and requires them to have mechanisms for addressing ethical issues to ensure patient safety and quality of care. The other choices (A, B, C) are professional organizations that focus on specific areas of healthcare practice and do not have the authority to set regulatory standards for addressing ethical issues in healthcare organizations.

Correct Answer: B

Rationale: The correct answer is B: Provide emotional support and comfort measures. In the final stages of dying, the focus shifts from curative treatment to providing comfort and dignity. Emotional support helps alleviate anxiety and fear, promoting a peaceful transition. Comfort measures like pain management improve quality of life. Encouraging the patient to eat may be futile as the body shuts down. Performing frequent assessments for recovery signs is not appropriate in this situation. Implementing aggressive interventions could go against the patient's wishes for a natural death.