Which of the following statements is NOT true of Pneumothorax?

Correct Answer: C

Rationale: In pneumothorax, air enters the normally negative pressure space between the lung and chest wall, leading to loss of negative intra-pleural pressure. However, this loss of negative pressure typically does not directly result in lung collapse. Instead, the accumulation of air in the pleural space can lead to a pressure imbalance, causing the lung to collapse partially or completely, which is known as atelectasis. Therefore, it is more accurate to state that the loss of negative intra-pleural pressure can result in lung collapse due to the presence of air in the pleural space, rather than the loss of negative pressure itself causing the collapse.

Correct Answer: B

Rationale: The effects of AIDS on pregnancy do not generally include repeated abortion as a direct consequence. AIDS can impact pregnancy by increasing the risk of complications such as premature birth, low birth weight, and potential transmission of the virus from mother to child. Infertility can also be a concern, but repeated abortion is not a common effect of AIDS on pregnancy. It is important to provide accurate information about the effects of AIDS on pregnancy to ensure proper understanding and support for individuals affected by this condition.

Correct Answer: C

Rationale: Nurse Sandra should consider Cindy, 7 years old who has been absent due to skin lesions, as a priority for home visitation. Skin lesions can indicate potential health issues that need to be addressed promptly. Cindy's frequent absences could be a sign that her condition is affecting her school attendance and overall well-being. By conducting a home visit, Nurse Sandra can assess Cindy's living environment, provide appropriate care recommendations, and ensure that she receives necessary medical attention. This proactive approach can help address Cindy's health concerns and support her academic performance.

Correct Answer: C

Rationale: A dental abscess is characterized by a localized collection of pus that results from a bacterial infection of the tooth pulp, leading to swelling, pain, and inflammation. The infection typically occurs when bacteria enter the tooth through a cavity, crack, or other dental injury. The abscess can cause significant pain and discomfort and must be treated promptly by a dentist to prevent further complications. Dental caries refer to tooth decay or cavities that result from the breakdown of tooth structure by acids produced by bacteria. Periodontitis is a severe gum infection that damages the soft tissue and destroys the bone that supports the teeth. Oral candidiasis is a fungal infection that affects the mouth and throat.

Correct Answer: A

Rationale: Breastfeeding is actually a protective factor against acute otitis media (AOM) in children due to the antibodies and nutrients present in breast milk that help strengthen the immune system and the Eustachian tube function. Swimming, exposure to cigarette smoke, and poor hygiene are all risk factors for AOM. Swimming can introduce water into the ears, which can lead to infections. Exposure to cigarette smoke can irritate the mucous membranes in the respiratory tract and increase the risk of infections. Poor hygiene can lead to the spread of bacteria that can cause AOM.

Correct Answer: B

Rationale: Cell-mediated immunity is a type of immune response that involves the activation of cytotoxic T cells and other immune cells to directly target and destroy infected or abnormal cells. It does not involve the production of antibodies, which are the primary component of humoral immunity. Antibodies are produced by B cells and are responsible for targeting extracellular pathogens such as bacteria and viruses. In contrast, cell-mediated immunity is more focused on targeting intracellular pathogens, cancerous cells, and other cells that have been compromised. So, production of antibodies is not usually associated with cell-mediated immunity.

Correct Answer: D

Rationale: The Somogyi effect, also known as rebound hyperglycemia, is a phenomenon observed in patients with diabetes mellitus during sleep. It is characterized by a low blood sugar level (hypoglycemia) followed by high blood sugar (hyperglycemia) in the morning. This occurs due to limited insulin in the body during the night, leading to high blood sugar levels in the morning as a response to the hypoglycemia episode. Too much globulin or albumin are not directly associated with the Somogyi effect. Increasing insulin in the body would rather help prevent the hypoglycemia episode that triggers the rebound hyperglycemia in the Somogyi effect.

Correct Answer: C

Rationale: In a pregnant patient with suspected pulmonary embolism (PE), the most appropriate imaging modality for evaluation is contrast-enhanced computed tomography (CT) pulmonary angiography. This imaging technique has been shown to be safe for the fetus when necessary, especially if the benefits of making a diagnosis outweigh the minimal risks associated with radiation exposure. It provides quick and accurate detection of PE with high sensitivity and specificity.

Correct Answer: A

Rationale: ** In a patient with ARDS, the priority intervention to manage respiratory failure is to initiate lung-protective mechanical ventilation with low tidal volume. ARDS is characterized by widespread inflammation and injury to the alveoli, leading to impaired gas exchange and severe hypoxemia. Lung-protective ventilation strategies aim to minimize ventilator-induced lung injury by using lower tidal volumes (around 6 mL/kg of predicted body weight) to reduce barotrauma and volutrauma.