Nokea
In response to chronic hypoxia, which physiological adaptation occurs in the body to increase oxygen delivery to tissues?
- A. Decreased erythropoietin production
- B. Decreased red blood cell production
- C. Increased cardiac output
- D. Decreased ventilation rate
Correct Answer: C
Rationale: In response to chronic hypoxia, the body adapts to increase oxygen delivery to tissues by increasing cardiac output. This is achieved by increasing the heart rate and stroke volume, allowing more oxygenated blood to be pumped to the tissues. The increased cardiac output helps compensate for the lower oxygen levels in the blood, ensuring that tissues receive an adequate supply of oxygen despite the hypoxic conditions. This physiological adaptation is essential for maintaining tissue oxygenation and supporting overall cellular function in the presence of chronic hypoxia.
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Amy, a multiparous patient, 28 hours after Ceasarian delivery (CS), who is breastfeeding, complains of severe abdominal cramps. Nurse Kayla explains that these are caused by which of the following?
- A. Flatulence accumulation after CS
- B. Release of Oxytocin during the breastfeeding session
- C. Healing of the abdominal incision after CS
- D. Side effects of the medications administered after delivery
Correct Answer: B
Rationale: The severe abdominal cramps experienced by the multiparous patient Amy, 28 hours after a Cesarean delivery (CS) and while breastfeeding, are likely caused by the release of Oxytocin during the breastfeeding session. Oxytocin is a hormone that is naturally produced during breastfeeding to stimulate the contraction of the uterus and help reduce postpartum bleeding. These contractions may result in cramping sensations in the abdomen, specifically at the site of the uterus. It is a normal physiological response and an indication that the body is working as it should to support the postpartum recovery process.
Which of the following structures is responsible for transporting food from the oral cavity to the esophagus during swallowing?
- A. Tongue
- B. Pharynx
- C. Esophagus
- D. Epiglottis
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.
Bulimia is best defined as a /an _____.
- A. disorder of the unknown origin associated with starving oneself
- B. pathological disorder of binging and vomiting
- C. phobic disorder of fear of obesity
- D. eating disorder associated with vomiting
Correct Answer: B
Rationale: Bulimia nervosa is best defined as a pathological disorder involving recurrent episodes of binge eating followed by inappropriate compensatory behaviors to prevent weight gain, such as self-induced vomiting, excessive exercise, or misuse of laxatives. It is categorized as an eating disorder rather than a phobic disorder as it involves behaviors related to food consumption and body image, not just fears or phobias. Bulimia is not solely associated with starving oneself, as individuals with bulimia tend to consume large amounts of food during binge episodes. Therefore, the most accurate definition of bulimia is a pathological disorder of binging and vomiting.
A 38-year-old woman presents with cyclic pelvic pain, dysmenorrhea, and dyspareunia. On pelvic examination, the uterus is retroverted and fixed. Which of the following conditions is most likely to be responsible for these findings?
- A. Endometriosis
- B. Adenomyosis
- C. Leiomyomas (uterine fibroids)
- D. Pelvic inflammatory disease (PID)
Correct Answer: A
Rationale: Endometriosis is the most likely condition responsible for the symptoms described in this scenario. Endometriosis is a chronic condition in which endometrial-like tissue grows outside the uterus, commonly affecting the pelvic structures such as the ovaries, fallopian tubes, and pelvic peritoneum. The main symptoms include cyclic pelvic pain, dysmenorrhea (painful periods), and dyspareunia (pain during intercourse). The retroverted and fixed uterus on examination may be due to adhesions from endometriosis, causing the uterus to be fixed in position. Endometriosis should be considered in women of reproductive age presenting with these symptoms and pelvic examination findings.
A patient presents with recurrent episodes of severe headache associated with ipsilateral lacrimation, rhinorrhea, and ptosis. Symptoms are often triggered by alcohol consumption. Which of the following neurological conditions is most likely responsible for these symptoms?
- A. Migraine headache
- B. Cluster headache
- C. Tension-type headache
- D. Trigeminal neuralgia
Correct Answer: B
Rationale: The patient is presenting with symptoms consistent with cluster headache. Cluster headaches are characterized by recurrent episodes of severe unilateral (ipsilateral) headache accompanied by lacrimation (tearing from the eyes), rhinorrhea (runny nose), and ptosis (drooping of the eyelid). These headaches often occur in clusters over a period of weeks to months, hence the name "cluster headache."