Sudden infant death syndrome (SIDS) is defined as the sudden death of an infant younger than 1 year of age that occurs

Correct Answer: C

Rationale: The correct answer to the question is C) when an autopsy fails to find a cause of death. This is because Sudden Infant Death Syndrome (SIDS) is a diagnosis of exclusion, meaning that it can only be determined after ruling out all other possible causes of death through a thorough autopsy and investigation. SIDS is a complex phenomenon that is not fully understood, but it is characterized by the sudden and unexpected death of an apparently healthy infant under 1 year of age. Option A) seemingly during play is incorrect because SIDS occurs during sleep, not during play. Option B) following a recent immunization is incorrect because although immunizations may be a concern for some parents, there is no proven link between immunizations and SIDS. Option D) when an infant is found dead in their crib is incorrect because while SIDS deaths often occur during sleep in a crib, the key defining factor is the inability to identify a cause of death upon autopsy. Educationally, understanding SIDS is crucial for healthcare professionals working with infants and young children. It is important to educate parents and caregivers about safe sleep practices to reduce the risk of SIDS, such as placing infants on their backs to sleep, using a firm sleep surface, and avoiding soft bedding and overheating. By understanding the criteria and characteristics of SIDS, healthcare providers can better support families who have experienced the tragic loss of a child due to SIDS and help to promote safe sleep environments for all infants.

Correct Answer: A

Rationale: The cylinder must always be checked before use to ensure that enough oxygen is available for the patient. It is unsafe to use a cylinder that reads 500 psi or less because not enough oxygen remains for a patient transfer. A cylinder that is not secured properly may result in injury to the patient. Oxygen flow is discontinued by turning the valve clockwise until it is tight.

Correct Answer: C

Rationale: In the context of oxygen therapy, maintaining proper suction pressure is crucial to prevent trauma to mucus membranes and airways. The correct answer, option C ($10-15 mmHg), is the most appropriate because this pressure range is considered safe for adults when using portable suction equipment. Option A ($2-5 mmHg) is too low and may not effectively remove secretions, especially in cases where deeper suctioning is required. This pressure range is more suitable for pediatric patients or those with very delicate mucosal membranes. Option B ($5-10 mmHg) is slightly better but still on the lower end, which may not provide adequate suction power for effective removal of secretions in adult patients without causing trauma. Option D ($15-25 mmHg) is too high and poses a risk of causing mucosal trauma and airway damage. This pressure range is excessive and should be avoided to prevent harm to the patient. Educationally, it is important for healthcare professionals, particularly those preparing for the NCLEX exam, to understand the appropriate suction pressure ranges for different patient populations. This knowledge ensures safe and effective suctioning practices, minimizing the risk of complications such as tissue damage or airway injury. Remembering the correct pressure range for adults (10-15 mmHg) is crucial for providing quality care during oxygen therapy interventions.

Correct Answer: B

Rationale: The correct answer to the question is B) Glucose + Fructose. Sucrase is an enzyme responsible for breaking down sucrose into its constituent monosaccharides, which are glucose and fructose. Glucose is a simple sugar that is a primary source of energy for the body, while fructose is another simple sugar found in fruits and honey. Option A) Galactose + Galactose is incorrect because sucrase acts on sucrose, not galactose. Option C) Glucose + Galactose is also incorrect because sucrase specifically breaks down sucrose into glucose and fructose, not glucose and galactose. Option D) Fructose + Fructose is incorrect because sucrase does not form two molecules of fructose when acting on sucrose. Understanding the breakdown of sucrose by sucrase is important in the context of oxygen therapy because it helps healthcare providers understand the metabolic processes involved in energy production when providing oxygen to patients. Knowing the components of sugars and how they are metabolized is crucial for nurses and other healthcare professionals to provide appropriate care and support to patients with various health conditions. This knowledge is also essential for pharmacology, biochemistry, and nutrition courses, as it forms the basis of understanding how the body processes different types of sugars.

Correct Answer: B

Rationale: In the context of oxygen therapy and its related pharmacological interventions, understanding the appropriate drug therapy for specific conditions like hemosiderosis is crucial for nursing practice. Deferoxamine, the correct answer, is an iron chelator that binds to excess iron in the body, aiding in its excretion. In hemosiderosis, there is an abnormal accumulation of iron in tissues, leading to organ damage. Deferoxamine helps to remove this excess iron, thereby preventing further complications associated with iron overload. Acetazolamide (option A) is a diuretic primarily used to treat conditions like glaucoma and altitude sickness by reducing fluid accumulation. It is not indicated for hemosiderosis as it does not address the underlying iron overload issue. Calcium EDTA (option C) is a chelating agent used for heavy metal poisoning, not specifically for iron overload conditions like hemosiderosis. Activated charcoal (option D) is used to adsorb toxins in cases of poisoning and overdose, but it does not have a role in treating hemosiderosis. Educationally, this question reinforces the importance of pharmacological knowledge in managing specific conditions. Understanding the mechanism of action of drugs like deferoxamine in treating hemosiderosis enhances a nurse's ability to provide safe and effective care to patients with iron overload disorders. This knowledge also highlights the significance of accurate drug administration in improving patient outcomes and preventing further complications related to oxygen therapy and associated conditions.