Correct Answer: D

Rationale: Incompetent cervix refers to a weakened cervix that is unable to support the weight of the growing fetus, leading to painless cervical dilation and second-trimester pregnancy loss. In this condition, the cervix may dilate prematurely without contractions, resulting in a painless cervical dilation. The history of recurrent second-trimester losses, along with cervical dilation and absence of uterine contractions in the presenting pregnant woman, are characteristic of incompetent cervix. Prompt recognition and management with cerclage placement can help prevent further pregnancy losses in women with incompetent cervix.

Correct Answer: C

Rationale: When planning for Jose's oxygen therapy, the nurse should consider the need for a humidifier to prevent drying of the mucous membranes, the appropriate length of tubing for mobility and safety reasons, and the manner of administering oxygen (continuous or intermittent) based on Jose's condition and oxygen requirements. However, determining Jose's age is not a relevant factor in planning for his oxygen therapy. The decision-making process should be based on his specific medical needs and condition rather than his age.

Correct Answer: B

Rationale: The pharynx is the structure responsible for transporting food from the oral cavity to the esophagus during swallowing. When food is chewed and mixed with saliva in the oral cavity, it forms a bolus that is propelled to the pharynx by the tongue. The pharynx serves as a common passageway for both air and food, allowing the bolus to pass into the esophagus while preventing it from entering the trachea. The epiglottis, although important in preventing food from entering the airway, is not directly involved in the transportation of food from the oral cavity to the esophagus.

Correct Answer: B

Rationale: As an epidemiology nurse, Nurse Rona's primary function and responsibility is to implement public health surveillance. Epidemiology nurses play a crucial role in monitoring and controlling the spread of diseases within communities. This involves conducting surveillance activities to identify patterns of disease occurrence, investigating outbreaks, collecting and analyzing data, and collaborating with various stakeholders to develop strategies for disease prevention and control. While providing nursing care to sick residents is important, the primary focus of an epidemiology nurse is on population-based health issues rather than individual patient care. Additionally, while Nurse Rona may assist epidemiologists in making reports and follow up cases and contacts, her main role is to implement public health surveillance to protect and promote the health of the community as a whole.

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.