The type of epidemiologic study that is used to describe a group of persons enrolled in a study who share some characteristic of interest and who are followed over a period of time to observe some health outcome is a/an:

Correct Answer: B

Rationale: Cohort studies are types of epidemiological studies that involve a group of individuals who share a common characteristic or experience and are followed over time to observe the development of a particular health outcome. This type of study is useful in determining the incidence of a disease, identifying risk factors, and studying the natural history of a disease. Cohort studies allow researchers to investigate the relationship between exposure and outcome by following participants forward in time. It helps in establishing causality and is particularly useful for studying rare exposures or outcomes. In contrast, cross-sectional studies involve collecting data from a population at a single point in time, experimental studies involve interventions and control groups, and case-control studies involve comparing individuals with a particular health outcome (cases) to those without the outcome (controls) retrospectively.

Correct Answer: C

Rationale: Antipsychotic medications, especially first-generation antipsychotics, can cause extrapyramidal symptoms (EPS) as an adverse effect. EPS include symptoms such as muscle rigidity, tremors, akathisia (restlessness), and tardive dyskinesia (involuntary movements of the face and body). These symptoms are due to the medications' effects on the dopamine system in the brain. It is crucial for the nurse to monitor the patient closely for EPS because they can be uncomfortable, distressing, and may impact the patient's quality of life and medication adherence. Early recognition and management of EPS are essential to prevent further complications and improve the patient's overall well-being.

Correct Answer: C

Rationale: The appropriate ratio of chest compressions to rescue breaths for adult CPR is 30 compressions to 2 breaths. This means that after every 30 chest compressions, two rescue breaths should be given. This ratio helps in maintaining oxygen circulation in the body while also ensuring that the heart is being effectively pumped to circulate blood. The emphasis on chest compressions is critical in maintaining blood flow to vital organs during cardiac arrest, while the rescue breaths help in providing oxygen to the patient's lungs. This ratio is recommended by organizations like the American Heart Association for performing high-quality adult CPR.

Correct Answer: B

Rationale: The laboratory test used to monitor the therapeutic effect of warfarin therapy is the International Normalized Ratio (INR). Warfarin is a commonly prescribed anticoagulant medication that works by inhibiting the action of vitamin K-dependent clotting factors. Maintaining the INR within the target range specific to the indication for anticoagulation (e.g., DVT prevention or treatment) is essential to balance the risk of bleeding and clotting.

Correct Answer: A

Rationale: Educating the client about the importance of balanced nutrition and frequent monitoring of blood glucose levels should be prioritized to address the client's concerns about managing blood sugar levels while breastfeeding. This intervention helps empower the client to make informed choices about her diet and monitor her blood sugar levels effectively. By focusing on balanced nutrition and regular blood glucose monitoring, the client can better manage her blood sugar levels during the postpartum period and while breastfeeding, reducing the risk of complications associated with gestational diabetes. It also promotes overall health and well-being for both the mother and the baby.

Correct Answer: C

Rationale: Patients like Emmy who have experienced delayed hypersensitivity to latex typically present with symptoms such as rhinitis (runny or stuffy nose) and conjunctivitis (inflammation of the eyes). In addition, delayed hypersensitivity reactions often involve skin manifestations, such as blisters. These symptoms are reflective of the inflammatory response triggered by exposure to latex in individuals with delayed hypersensitivity. Symptoms like flushing, bronchospasm, urticaria, laryngeal edema, papules, vesicles, and pruritus are more commonly associated with immediate-type hypersensitivity reactions rather than delayed hypersensitivity reactions in latex-sensitive individuals.

Correct Answer: C

Rationale: Placenta previa is a condition in pregnancy where the placenta implants low in the uterus, partially or completely covering the cervix. This can lead to painless, bright red vaginal bleeding in the third trimester. However, in some cases, placenta previa can also present with sudden onset of severe lower abdominal pain and signs of shock, such as syncope, pallor, and abdominal distention due to concealed bleeding. In severe cases, the bleeding can be significant and life-threatening for both the mother and the baby. It is important to promptly diagnose and manage placenta previa to prevent complications.

Correct Answer: C

Rationale: The primary nursing care delivery model is represented by option C, where the nurse performs all tasks needed by the individual patient to optimize health. In this model, the nurse is responsible for coordinating and providing comprehensive care to a specific group of patients throughout their stay. The primary nurse establishes a close relationship with the patient and takes accountability for their care, ensuring continuity, communication, and personalized attention. This approach emphasizes the importance of the nurse-patient relationship and holistic care delivery, which can lead to improved patient outcomes and satisfaction.

Correct Answer: A

Rationale: Pneumothorax is a condition characterized by the presence of air in the pleural space surrounding the lungs, which can lead to lung collapse. The nurse's assessment findings in a patient with pneumothorax are typically as follows: