Correct Answer: C

Rationale: Sensitivity refers to the ability of an instrument to detect small or fine differences among the subjects being studied. In the context of research or measurement tools, sensitivity is crucial for identifying subtle variations in the data that may hold importance in the analysis. A sensitive instrument can accurately measure and record even the smallest changes, making it a valuable criterion when assessing the quality of a measurement tool in research studies. High sensitivity indicates that the instrument is more likely to pick up on nuances and variations in the data, providing researchers with more detailed and accurate information to work with.

Correct Answer: B

Rationale: Hip dysplasia is a common complication associated with untreated clubfoot in infants. If clubfoot is not treated promptly and properly, it can lead to abnormal development of the hip joint, resulting in hip dysplasia. This condition involves the abnormal formation of the hip socket, which can cause instability and potential dislocation of the hip joint. Early identification and treatment of clubfoot are important in preventing complications such as hip dysplasia.

Correct Answer: B

Rationale: The patient's presentation of severe headache, blurred vision, and fatigue, along with the laboratory findings of elevated white blood cell count, thrombocytosis, and JAK2 V617F mutation, are characteristic of essential thrombocythemia. This is a myeloproliferative neoplasm characterized by the clonal proliferation of megakaryocytes, leading to an increased platelet count. The JAK2 V617F mutation is commonly found in essential thrombocythemia and other myeloproliferative disorders. The symptoms of essential thrombocythemia can be related to the increased blood viscosity and risk of thrombosis due to the elevated platelet count. Polycythemia vera would present with elevated red blood cell count, hemoglobin, and hematocrit, along with other features such as pruritus after a hot bath. Chronic myeloid leukemia (CML

Correct Answer: D

Rationale: Record keeping involves several key steps such as structuring, securing, and storing information. However, easy disposal is not a step in record keeping. In fact, it is important to carefully consider the disposal of records in a secure and responsible manner to protect sensitive information and comply with relevant regulations. Proper disposal methods should be followed to ensure that records are not accessible to unauthorized individuals and that any sensitive information is properly destroyed to prevent misuse or breaches of privacy. Therefore, easy disposal is not a recommended practice in effective record keeping.

Correct Answer: B

Rationale: Nurses are bound by strict confidentiality and privacy regulations in their profession. If a nurse fails to keep a patient's personal information confidential and discloses it without authorization, they can be charged with invasion of privacy. Invasion of privacy is the wrongful intrusion into a person's private affairs without their consent, and it is a serious violation of ethical and legal standards in healthcare. Nurses must always prioritize patient confidentiality to maintain trust and uphold ethical standards in their practice.