Nokea
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.
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A prenatal client has a suspected diagnosis of iron deficiency anemia. On assessment, which finding should the nurse expect to note as a result of this condition?
- A. Dehydration
- B. Overhydration
- C. A high hematocrit level
- D. A low hemoglobin level
Correct Answer: D
Rationale: Pathological anemia of pregnancy is primarily caused by iron deficiency. When the hemoglobin level is below 11 mg/dL (110 mmol/L), iron deficiency is suspected. An indirect index of the oxygen-carrying capacity is determined via a packed red blood cell volume or hematocrit level. Dehydration and overhydration are not specifically associated with iron deficiency anemia.
The nurse notes this cardiac rhythm on the cardiac monitor (refer to figure). What should the nurse interpret that the client is experiencing?
- A. Atrial fibrillation
- B. Sinus bradycardia
- C. Ventricular fibrillation (VF)
- D. Premature ventricular contractions (PVCs)
Correct Answer: D
Rationale: PVCs are abnormal ectopic beats (occurring in otherwise normal sinus rhythm) originating in the ventricles. They are characterized by an absence of P waves, wide and bizarre QRS complexes, and a compensatory pause that follows the ectopy. In atrial fibrillation, no definitive P wave usually can be observed; only fibrillatory waves before each QRS complex are observed. In sinus bradycardia, atrial and ventricular rhythms are regular, and the rates are less than 60 beats per minute. In ventricular fibrillation, impulses from many irritable foci in the ventricles fire in a totally disorganized manner, which appears as a chaotic rapid rhythm in which the ventricles quiver.
The nurse has just finished assisting the primary health care provider in placing a central intravenous (IV) line. Which is a priority intervention to assure the client's safety?
- A. Assessing the client's pain level
- B. Assessing the client's temperature
- C. Preparing the client for a chest x-ray
- D. Monitoring the client's blood pressure (BP)
Correct Answer: C
Rationale: A major risk associated with central line placement is the possibility of a pneumothorax developing from an accidental puncture of the lung. Assessing the results of a chest radiograph is one of the best methods to determine if this complication has occurred and verify catheter tip placement before initiating IV therapy. A temperature elevation related to central line insertion would not likely occur immediately after placement. Pain management is important but is not the priority at this point. Although BP assessment is always important in assessing a client's status after an invasive procedure, fluid volume overload is not a concern until IV fluids are started.
A client is scheduled for hydrotherapy for a burn dressing change. Which action should the nurse take to ensure that the client is comfortable during the procedure?
- A. Ensure that the client is appropriately dressed.
- B. Administer an opioid analgesic 30 to 60 minutes before therapy.
- C. Schedule the therapy at a time when the client generally takes a nap.
- D. Assign an unlicensed assistive personnel (UAP) to stay with the client during the procedure.
Correct Answer: B
Rationale: The client should receive pain medication approximately 30 to 60 minutes before a burn dressing change. This will help the client tolerate an otherwise painful procedure. None of the remaining options addresses the issue of pain effectively.
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.