A patient presents with watery diarrhea, abdominal cramps, and nausea after consuming contaminated water from a stream during a camping trip. Laboratory tests reveal oocysts in the stool sample. Which of the following parasites is most likely responsible for this infection?

Correct Answer: C

Rationale: Cryptosporidium parvum is a protozoan parasite often found in contaminated water sources. This parasite is known to cause watery diarrhea, abdominal cramps, and nausea in infected individuals. The presence of oocysts in the stool sample is characteristic of Cryptosporidium infection. Other parasitic infections may present with similar symptoms, but in this case, the most likely culprit based on the exposure history and laboratory findings is Cryptosporidium parvum.

Correct Answer: A

Rationale: Battery refers to the intentional and offensive physical contact with another person without their consent, resulting in harm or injury. In this scenario, the victim clearly expressed their unwillingness to be touched or helped by saying, "Don't touch me!" multiple times. By ignoring the victim's refusal and physically forcing them into the ambulance, the EMT is committing battery even though they may have had good intentions to provide assistance. It is important for medical professionals, including EMTs, to always respect a person's right to refuse medical treatment or assistance, even in emergency situations.

Correct Answer: A

Rationale: The theory that categorizes professionals as Novice to experts is by Patricia Benner. Patricia Benner developed the Novice to Expert model, which describes how individuals progress through five levels of proficiency in a skill or field. The five levels are Novice, Advanced Beginner, Competent, Proficient, and Expert. Benner's model is widely used in nursing education and research to understand how nurses develop their clinical skills and expertise over time.

Correct Answer: A

Rationale: The purpose of a tracheostomy is to establish an artificial airway in the trachea through a surgical procedure. This is done to bypass obstructions in the upper airway, assist with breathing, or facilitate the removal of secretions from the lungs. A tracheostomy helps in maintaining a clear and secure airway for patients who have difficulty breathing or require long-term mechanical ventilation support.

Correct Answer: A

Rationale: The scenario described, including cyclic pelvic pain, dysmenorrhea, dyspareunia, retroverted uterus, and a nodular mass behind the uterus, is most indicative of endometriosis. Endometriosis is a gynecological condition in which tissue similar to the endometrium (the tissue that lines the uterus) is found outside the uterus, typically on structures within the pelvis. The presence of endometrial tissue in abnormal locations can lead to symptoms such as pelvic pain, especially during menstruation (dysmenorrhea), painful intercourse (dyspareunia), and the formation of nodular masses (endometriomas) that can be felt on pelvic examination. It is important to note that while adenomyosis and uterine fibroids (leiomyomas) can also cause pelvic pain and dysmenorrhea, the specific findings of retroverted uterus and palpable nodular mass behind

Correct Answer: C

Rationale: In this situation, it is crucial for the nurse to inform the surgeon immediately and request corrective action. Maintaining a sterile field during surgical procedures is essential to prevent infections and ensure patient safety. Any break in sterile technique should be addressed promptly to prevent any potential harm to the patient. By informing the surgeon immediately, corrective action can be taken promptly to maintain the sterility of the surgical field and minimize the risk of complications. Reporting the incident to the surgeon also allows for immediate intervention and re-education of the team member involved in the break in sterile technique.

Correct Answer: B

Rationale: Goiter is a condition characterized by the enlargement of the thyroid gland. The most common cause of goiter worldwide is iodine deficiency, which is required for the production of thyroid hormones. When there is insufficient iodine intake, the thyroid gland enlarges in an attempt to produce more hormones, leading to the development of goiter. While other factors can also contribute to the development of goiter, such as autoimmune diseases and certain medications, the primary cause associated with the condition is an iodine-deficient diet.

Correct Answer: A

Rationale: Shoulder dystocia is an obstetric emergency where one of the baby's shoulders becomes impacted behind the mother's pubic bone after the head delivers. This can lead to compression of the umbilical cord and compromise fetal oxygenation. The most critical nursing intervention in managing shoulder dystocia is applying suprapubic pressure to dislodge the impacted shoulder and allow for delivery of the baby. By gently pushing downwards on the mother's abdomen just above the pubic bone, the shoulder can be released, and the baby can be delivered successfully. This intervention should be prioritized to prevent potential complications for both the mother and the baby. Episiotomy may be considered if necessary, but it is secondary to addressing the shoulder dystocia. Oropharyngeal airway insertion and administering magnesium sulfate are not indicated in the immediate management of shoulder dystocia.

Correct Answer: B

Rationale: Vestibular neuritis is a condition characterized by the acute onset of severe vertigo, nausea, vomiting, and nystagmus. These symptoms are typically worsened by head movement. Vestibular neuritis is caused by inflammation of the vestibular nerve, which plays a key role in balance and spatial orientation. The classic presentation of these symptoms, along with the absence of hearing loss (which is seen in labyrinthitis), points towards vestibular neuritis as the most likely cause in this scenario. Meniere's disease presents with recurrent episodes of vertigo, hearing loss, tinnitus, and sensation of fullness in the ear. Benign paroxysmal positional vertigo (BPPV) is characterized by brief episodes of vertigo triggered by changes in head position.