Nokea
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?
- A. Passive immunity
- B. Innate immunity
- C. Humoral immunity
- D. Cell-mediated immunity
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.
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In three year's tie, Nurse Florence needs to attain certain number of continuing Professional Development units to be able to renew her __________.
- A. Philippine Nurses Association Membership
- B. Professional License
- C. Professional Identification Card
- D. Professional Registration
Correct Answer: B
Rationale: Nurse Florence needs to attain a certain number of continuing Professional Development units in order to renew her Professional License. Continuing Professional Development ensures that nurses stay up-to-date with the latest advancements and best practices in the field, ultimately leading to improved patient care outcomes. Renewing the Professional License is crucial for Nurse Florence to legally practice nursing and demonstrate her commitment to ongoing learning and development in the profession.
Nurse Rona and her team has been utilizing the EEPIDEMIOLOGIC TRIAD model - identifying causative factors of diseases. Which of the following is not relevant this, model?
- A. External agent
- B. Treatment Regimen
- C. Susceptible host
- D. Environment
Correct Answer: B
Rationale: The Epidemiologic Triad model focuses on identifying the causative factors of diseases, particularly infectious diseases. The three components of the triad are the external agent, the susceptible host, and the environment. These factors interact to result in the occurrence of disease. Treatment Regimen, on the other hand, is not one of the causative factors but rather a response to manage and treat the disease once it has occurred. While treatment is essential, it is not part of the factors that contribute to the initial development of the disease within the Epidemiologic Triad model.
A patient presents with abdominal pain, fever, and peripheral blood smear showing fragmented red blood cells (schistocytes). Laboratory tests reveal elevated lactate dehydrogenase (LDH), decreased haptoglobin, and increased indirect bilirubin. Which of the following conditions is most likely to cause these findings?
- A. Hemolytic uremic syndrome (HUS)
- B. Thrombotic thrombocytopenic purpura (TTP)
- C. Disseminated intravascular coagulation (DIC)
- D. Immune thrombocytopenic purpura (ITP)
Correct Answer: B
Rationale: Thrombotic thrombocytopenic purpura (TTP) is a rare blood disorder characterized by microangiopathic hemolytic anemia, thrombocytopenia, fever, neurological abnormalities, and renal dysfunction. The peripheral blood smear in TTP typically shows fragmented red blood cells (schistocytes) due to mechanical destruction within small blood vessels. Laboratory findings in TTP commonly include elevated lactate dehydrogenase (LDH), decreased haptoglobin (as it is consumed in the clearance of free hemoglobin), and increased indirect bilirubin due to increased red blood cell breakdown. This combination of clinical presentation and laboratory abnormalities is classic for TTP. Hemolytic uremic syndrome (HUS) may present similarly but is more commonly associated with renal dysfunction and is often triggered by infection with Shiga toxin-producing E. coli.
Lillian asks the nurse the cause of this ailment. Which of the following would the nurse explain as predisposing factors of mastitis? (Select all that apply) I. Milk stasis II. Nipple trauma III. Using alcohol in cleaning nipples IV. Baby 's sitting position
- A. II and IV
- B. I and II
- C. I and IV
- D. II and III
Correct Answer: B
Rationale: Mastitis is typically caused by bacterial infection, with predisposing factors including milk stasis (I) and nipple trauma (II). Milk stasis occurs when milk is not effectively removed from the breast, leading to a build-up that can block ducts and predispose to infection. Nipple trauma, such as cracks or damage, can provide entry points for bacteria to infect the breast tissue. Factors like using alcohol in cleaning nipples (III) and the baby's sitting position (IV) are not directly associated with the development of mastitis.
Nurse Angie added that oral contraceptives also contains progesterone. Which of the following is the action of progesterone in contraception? It inhibits _______.
- A. Testosterone production
- B. GnRH thereby inhibiting FSH and LH productions.
- C. Luteinising Hormone (LH) thereby inhibiting ovulation.
- D. Follicle Stimulating Hormone (FSH) thereby inhibiting maturation of ovum.
Correct Answer: C
Rationale: Progesterone in oral contraceptives works primarily by inhibiting ovulation. It suppresses the secretion of luteinizing hormone (LH) from the pituitary gland, which is essential for triggering the release of an egg (ovulation) from the ovary. By blocking ovulation, progesterone helps prevent pregnancy by making it less likely for a mature egg to be available for fertilization. This mechanism of action is a key factor in the effectiveness of progesterone-containing contraceptives in preventing pregnancy.