The blood vessels of the umbilical cord are protected from the pressure of the uterus by
a. a cushion of amniotic fluid c. a padding of Whar-ton's jelly
b. a strong, thick muscle layer d. surrounding vascular tissue
C
A specialized connective tissue called Wharton's jelly surrounds the umbilical cord and helps prevent compression of the umbilical cord. This tissue, plus the high volume of blood in the vessels, prevents compression of the umbilical cord.
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A patient has been admitted with acute left systolic heart failure secondary to acute myocardial infarction. The patient has dyspnea and orthopnea and a cardiac rhythm of sinus tachycardia
The physiologic dysfunction for this type of heart failure is what? A) Impaired contractility of the left ventricle B) Impaired compliance of the left ventricle C) Cardiac valve disease D) Acute myocardial infarction
An older adult patient who has cancer and Alzheimer's disease is crying but shakes her head "no" when asked about pain. The prescriber has ordered morphine sulfate 2 to 4 mg IV every 2 hours PRN pain
It has been 4 hours since a dose has been given. What will the nurse do? a. Administer 4 mg of morphine and monitor this patient's verbal and nonverbal res-ponses. b. Give 2 mg of morphine for pain to avoid increasing this patient's level of confusion. c. Request an order for a nonopioid analgesic or an antidepressant adjuvant analgesic. d. Withhold any analgesic at this time and reassess the patient in 30 to 60 minutes.
A client who had pancreatic surgery has been started on medication therapy with pancrelipase (Pancrease). The manifestation that the nurse would report as an indication that the dosage may be insufficient is
a. black, tarry stools. b. clay-colored stools. c. constipation. d. steatorrhea.
A preterm infant is placed on ventilatory assistance for respiratory distress syndrome. In light of her lung pathology, which additional ventilatory measure would you anticipate planning?
A) Administration of chilled oxygen to reduce lung spasm B) Increased inspiratory pressure; decreased expiratory pressure C) Administration of dry oxygen to avoid over-humidification D) Positive end-expiratory pressure to increase oxygenation