Nokea
The nurse admitting a client diagnosed with myocardial infarction (MI) to the coronary care unit (CCU) should plan care by implementing which intervention?
- A. Beginning thrombolytic therapy
- B. Placing the client on continuous cardiac monitoring
- C. Infusing intravenous (IV) fluid at a rate of 150 mL per hour
- D. Administering oxygen at a rate of 6 L per minute by nasal cannula
Correct Answer: B
Rationale: Standard interventions upon admittance to the CCU as they relate to this question include continuous cardiac monitoring. Thrombolytic therapy may or may not be prescribed by the primary health care provider. Thrombolytic agents are most effective if administered within the first 6 hours of the coronary event. The nurse should ensure that there is an adequate IV line insertion of an intermittent lock. If an IV infusion is administered, it is maintained at a keep-vein-open rate to prevent fluid overload and heart failure. Oxygen should be administered at a rate of 2 to 4 L per minute unless otherwise prescribed.
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A client who has been diagnosed with carbon monoxide poisoning is asking that the oxygen mask be removed. The nurse shares with the client that the oxygen may be safely removed once the carboxyhemoglobin level decreases to less than which level?
- A. 5%
- B. 10%
- C. 15%
- D. 25%
Correct Answer: A
Rationale: Oxygen may be removed safely from the client with carbon monoxide poisoning once carboxyhemoglobin levels are less than 5%. Normal carboxyhemoglobin (HbCO) levels are 0% to 3% for nonsmokers and 3% to 8% for smokers. Levels of 10% to 20% cause headaches, nausea, vomiting, and dyspnea. Levels of 30% to 40% cause severe headaches, syncope, and tachydysrhythmias. Levels greater than 40% cause Cheyne-Stokes respiration or respiratory failure, seizures, unconsciousness, permanent brain damage, cardiac arrest, and even death. Options 2, 3, and 4 are elevated levels.
The nurse determines that a client understands the purpose of a phytonadione injection for her newborn when she is heard making which statement to the baby's father?
- A. The baby's liver cannot produce that vitamin.
- B. Most newborns need a supplement of this vitamin.
- C. All newborns lack intestinal bacteria to produce this vitamin.
- D. It's unusual but our baby lack's the vitamin that helps the blood to clot.
Correct Answer: C
Rationale: The absence of normal flora needed to synthesize vitamin K (phytonadione) in the normal newborn gut results in low levels of vitamin K and creates a transient blood coagulation deficiency between the second and fifth day of life. An injection is administered prophylactically on the day of birth to combat the deficiency.
A client scheduled for pneumonectomy tells the nurse that a friend had lung surgery that required chest tubes. The client asks how long to expect chest tubes to be in place. Which statement by the nurse appropriately educates the client about the presence of a chest tube postpneumonectomy?
- A. They are generally removed after 36 to 48 hours.
- B. Not every lung surgery requires chest tubes to be used.
- C. They usually remain in place for a full week after surgery.
- D. Your type of surgery rarely requires chest tubes to be inserted after surgery.
Correct Answer: D
Rationale: Pneumonectomy involves removal of the entire lung, usually caused by extensive disease such as bronchogenic carcinoma, unilateral tuberculosis, or lung abscess. Chest tubes are not inserted because the cavity is left to fill with serosanguineous fluid, which later solidifies.
A client hospitalized with a diagnosis of thrombophlebitis is being treated with heparin infusion therapy. About 24 hours after the infusion has begun, the nurse notes that the client's partial thromboplastin time (PTT) is 65 seconds with a control of 30 seconds. What nursing action should the nurse implement?
- A. Discontinue the heparin infusion.
- B. Prepare to administer protamine sulfate.
- C. Notify the primary health care provider of the laboratory results.
- D. Include in report that the client is adequately anticoagulated.
Correct Answer: D
Rationale: The effectiveness of heparin therapy is monitored by the results of the PTT. Desired range for therapeutic anticoagulation is 1.5 to 2.5 times the control. A PTT of 65 seconds is within the therapeutic range. Therefore, options 1, 2, and 3 are incorrect actions.
A pregnant client reports that her last menstrual period was February 9, 2018. Using Nägele's rule, what will the nurse determine as the estimated date of birth?
- A. 7-Oct-18
- B. 16-Oct-18
- C. 7-Nov-18
- D. 16-Nov-18
Correct Answer: D
Rationale: Accurate use of Nägele's rule requires that the woman has a regular 28-day menstrual cycle. To calculate the estimated date of birth, the nurse would subtract 3 months from the first day of the last menstrual period, add 7 days, and then adjust the year as appropriate. First day of last menstrual period: February 9, 2018; subtract 3 months: November 9, 2017; add 7 days: November 16, 2017; and add 1 year, November 16, 2018.