A patient is exposed to the hepatitis B virus (HBV) and develops immunity against future infections. Which type of immunity is primarily responsible for this protection?

Correct Answer: C

Rationale: Humoral immunity is primarily responsible for protecting against infections by pathogens like viruses. In the case of the hepatitis B virus (HBV), the individual is exposed to the virus and develops immunity, which is typically mediated by antibodies produced by B cells. These antibodies circulate in the blood and can neutralize the virus, preventing future infections. This type of immunity is known as humoral immunity, as it involves the production of antibodies that target specific antigens, such as those present on the surface of the hepatitis B virus. In contrast, passive immunity is when antibodies are transferred from an external source, innate immunity provides immediate, non-specific defenses against pathogens, and cell-mediated immunity involves the activation of T cells to combat intracellular pathogens.

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: D

Rationale: Incident reports (IR) are filed in the Records Section of the hospital. It is important for incident reports to be kept in the Records Section for various reasons. By being filed in the hospital's official records, incident reports are included in the hospital's documentation of events, which is crucial for legal and quality improvement purposes. Placing IRs in the Records Section ensures that they are accessible to relevant personnel who may need to refer to them in the future for investigations, audits, or further actions related to the incidents. Keeping incident reports in a centralized location like the Records Section also helps in standardizing the process of documenting and tracking incidents, maintaining consistency and accountability within the healthcare facility.

Correct Answer: B

Rationale: Endometriosis is a chronic gynecologic condition characterized by the presence of endometrial-like tissue outside the uterus, commonly on structures within the pelvis. The classic symptoms of endometriosis include cyclic pelvic pain, dysmenorrhea (painful periods), and infertility. On pelvic examination, tender nodules or masses may be palpated along the uterosacral ligaments. These nodules are often referred to as "endometriotic implants" or "chocolate cysts." Endometriosis can cause inflammation, scarring, and adhesions in the pelvis, leading to symptoms such as pain and infertility. Polycystic ovary syndrome (PCOS) is characterized by ovarian dysfunction and hormonal imbalances, often leading to irregular periods and symptoms related to excess androgens. Adenomyosis is the presence of endometrial tissue within the myometrium of the uterus, leading

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: C

Rationale: The description provided is classical for fungal keratitis. Fungal keratitis typically presents with a yellowish-white spot on the cornea, often surrounded by a ring of inflammation. Branching, filamentous opacities extending from the corneal lesion are commonly seen on slit-lamp examination in cases of fungal keratitis. This condition is often associated with risk factors such as trauma with organic material or contact lens wear. Prompt diagnosis and treatment with antifungal agents are crucial in managing fungal keratitis to prevent potential complications.

Correct Answer: C

Rationale: Ventricular tachycardia (VT) is a potentially life-threatening arrhythmia characterized by wide QRS complexes and absence of P waves on electrocardiogram (ECG). Patients with VT may present with symptoms such as chest pain, dyspnea, and syncope due to reduced cardiac output and ineffective pumping of the heart. VT is a serious condition that requires prompt treatment to prevent hemodynamic compromise and potential cardiac arrest. Stable angina typically presents with chest pain that is provoked by exertion and relieved by rest or nitroglycerin. Atrial fibrillation is characterized by an irregularly irregular rhythm with absent P waves on ECG. Supraventricular tachycardia typically presents with a narrow QRS complex on ECG.

Correct Answer: B

Rationale: The correct information for the nurse to include in patient education about aspirin therapy is to advise the patient to avoid using nonsteroidal anti-inflammatory drugs (NSAIDs) while taking aspirin. NSAIDs can increase the risk of gastrointestinal bleeding when taken along with aspirin, which is already a blood-thinning medication due to its antiplatelet effects. Patients with coronary artery disease are typically prescribed aspirin for its antiplatelet properties to prevent blood clot formation in the arteries. Avoiding NSAIDs will help reduce the risk of gastrointestinal complications and ensure the effectiveness of aspirin therapy in preventing cardiovascular events. Taking aspirin with a full glass of milk (Option A) is not a necessary instruction for aspirin therapy. Discontinuing aspirin therapy if a patient develops a fever (Option C) is not a standard practice unless advised by a healthcare provider. Taking aspir

Correct Answer: A

Rationale: In this case, the patient is experiencing respiratory acidosis as indicated by the low pH (7.28), elevated PaCO2 (65 mmHg), and elevated HCO3- (30 mEq/L). The primary acid-base disturbance is respiratory acidosis due to the retention of carbon dioxide (PaCO2 >45 mmHg) leading to an increase in HCO3- as a compensatory mechanism to maintain pH within normal limits. The elevated HCO3- levels (metabolic compensation) are trying to counterbalance the increased PaCO2 levels (respiratory acidosis) by increasing bicarbonate to attempt to normalize the pH. Overall, the ABG analysis shows respiratory acidosis with metabolic compensation in this COPD patient with an acute exacerbation and severe dyspnea.