What is the proper depth of chest compressions for a 9-month-old infant?

Correct Answer: A

Rationale: When performing chest compressions on a 9-month-old infant, the proper depth is 1/3 the diameter of the chest, which equates to approximately 1 1/2 inches. This depth is crucial for effective cardiopulmonary resuscitation (CPR) in infants. Choice B, which suggests 1/4 the diameter of the chest or about 1 inch, is incorrect as it does not provide the recommended depth for infants. Choice C, stating 1/2 the diameter of the chest or about 2 inches, is too deep and may cause harm to the infant. Choice D, mentioning 1/3 the diameter of the chest or about 3/4 inch, is also incorrect as it underestimates the required depth for effective chest compressions on a 9-month-old infant.

Correct Answer: D

Rationale: During the assessment of a 30-year-old female in labor, the EMT should be aware that delivery is imminent if she is crowning. Crowning indicates that the baby's head is visible at the vaginal opening, signaling that the birth is progressing rapidly and the baby will soon be delivered. This is a critical moment that requires preparedness for the birth process and ensuring a safe delivery environment. Choice A is incorrect because asking the mother when she is expecting to deliver is not relevant when the baby's head is visible at the vaginal opening. Choice B is incorrect as obtaining the patient's medical history is essential for providing appropriate care. Choice C is incorrect because determining the stage of labor by examining the patient is important but recognizing crowning indicates that delivery is imminent and requires immediate action.

Correct Answer: D

Rationale: The correct answer is D. Febrile seizures in children typically last less than 15 minutes and often do not have a postictal phase, meaning there is usually no prolonged recovery period or confusion after the seizure. They are commonly associated with the rapid rise in body temperature at the onset of a fever, rather than the duration of the fever itself. Choices A, B, and C are incorrect because febrile seizures can occur even after a child has had a fever for longer than 24 hours, they can be caused by viral or bacterial meningitis, and they do not have a typical pattern of occurring on the first day of a fever.

Correct Answer: B

Rationale: The correct answer is B. The presence of green vomit in a newborn is an abnormal finding and indicates a possible intestinal obstruction. This finding requires immediate attention and further investigation. Choices A, C, and D are normal findings in a newborn's abdomen assessment. A newborn typically has an umbilical cord with two arteries and one vein, a liver that may be palpable 1 to 2 cm below the costal margin due to its normal size in a neonate, and a soft, nondistended abdomen as expected in healthy newborns.

Correct Answer: C

Rationale: Heart disease is the leading cause of death in geriatric patients. It encompasses a range of conditions affecting the heart and blood vessels, such as coronary artery disease and heart failure, which are more prevalent in older individuals. These conditions can lead to serious complications and ultimately result in higher mortality rates among the elderly population. Hypertension (choice A) is a risk factor for heart disease but not the leading cause of death in geriatric patients. Arthritis (choice B) is a chronic condition affecting the joints, not a primary cause of death in this population. Altered mental status (choice D) is a symptom rather than a leading cause of death in geriatric patients.