Correct Answer: B

Rationale: In Stage I of Hodgkin's disease, the most commonly seen early symptom is usually unexplained fever and night sweats. Other common symptoms at this stage may include unexplained weight loss, itching, and enlarged lymph nodes in the neck, underarms, or groin. Chest and back pains, subnormal body temperature, and swelling of extremities are not typically early indicators of Stage I Hodgkin's disease.

Correct Answer: B

Rationale: Gingivitis is a dental condition characterized by inflammation and bleeding of the gingival tissues. It is often caused by poor oral hygiene leading to the accumulation of bacterial plaque along the gumline. The plaque contains bacteria that release toxins, leading to inflammation of the gums. If left untreated, gingivitis can progress to periodontitis, a more serious condition that affects the supporting structures of the teeth. Regular dental cleanings, proper oral hygiene practices, and professional treatment can help manage and prevent gingivitis.

Correct Answer: A

Rationale: Pelvic floor dysfunction can contribute to a prolonged second stage of labor by impairing the ability of the woman to effectively push during contractions. This can result in inefficient pushing efforts and slow fetal descent. The nurse should assess for signs and symptoms of pelvic floor dysfunction, such as difficulty controlling bowel movements or urine leakage, as addressing this issue may help improve the progress of labor. Maternal fatigue, fetal macrosomia (larger than average baby size), and uterine hyperstimulation are other factors that can impact labor but are less likely to specifically contribute to ineffective pushing efforts and slow fetal descent in the second stage of labor.

Correct Answer: B

Rationale: In patients with Rheumatic fever, typical manifestations include an increase in body temperature, non-pruritic rashes, and migratory joint pains. Voluntary muscle spasm is not a typical manifestation of Rheumatic fever. The main clinical features of Rheumatic fever are related to the inflammation of the heart, joints, skin, and central nervous system. Muscle spasms are not a prominent feature of this condition. It is important for the nurse to be aware of these typical manifestations to effectively monitor and manage the patient's condition.

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.