Saunders Review: Vital Signs and Laboratory Reference Intervals
The nurse is caring for a client with a diagnosis of breast cancer who is immunosuppressed. The nurse would consider implementing neutropenic precautions if the client's white blood cell count was which value? 1. 2000 mm3 (2.0 × 109 /L) 2. 5800 mm3 (5.8 × 109 /L) 3. 8400 mm3 (8.4 × 109 /L) 4. 11,500 mm3 (11.5 × 109 /L)
Answer: 1 Rationale: The normal WBC count ranges from 5000 to 10,000 mm3 (5 to 10 × 109 /L). The client who has a decrease in the number of circulating WBCs is immunosuppressed. The nurse implements neutropenic precautions when the client's values fall sufficiently below the normal level. The specific value for implementing neutropenic precautions usually is determined by agency policy. The remaining options are normal values.
A client with a history of heart failure is due for a morning dose of furosemide. Which serum potassium level, if noted in the client's laboratory report, should be reported before administering the dose of furosemide? 1. 3.2 mEq/L (3.2 mmol/L) 2. 3.8 mEq/L (3.8 mmol/L) 3. 2 mEq/L (4.2 mmol/L) 4. 8 mEq/L (4.8 mmol/L)
Answer: 1 Rationale: The normal serum potassium level in the adult is 3.5 to 5.0 mEq/L (3.5 to 5.0 mmol/L). The correct option is the only value that falls below the therapeutic range. Administering furosemide to a client with a low potassium level and a history of cardiac problems could precipitate ventricular dysrhythmias. The remaining options are within the normal range
The nurse is caring for a client who takes ibuprofen for pain. The nurse is gathering information on the client's medication history and determines it is necessary to contact the primary health care provider (PHCP) if the client is also taking which medications? Select all that apply 1. Warfarin 2. Glimepiride 3. Amlodipine 4. Simvastatin 5. Atorvastatin
Answer: 1, 2, 3 Rationale: Nonsteroidal antiinflammatory drugs (NSAIDs) can amplify the effects of anticoagulants; therefore, these medications should not be taken together. Hypoglycemia may result for the client taking ibuprofen if the client is concurrently taking an oral antidiabetic agent such as glimepiride; these medications should not be combined. A high risk of toxicity exists if the client is taking ibuprofen concurrently with a calcium channel blocker such as amlodipine; therefore, this combination should be avoided. There is no known interaction between ibuprofen and simvastatin or atorvastatin
Several laboratory tests are prescribed for a client, and the nurse reviews the results of the tests. Which laboratory test results should the nurse report? Select all that apply 1. Platelets 35,000 mm3 (35 × 109 /L) 2. Sodium 150 mEq/L (150 mmol/L) 3. Potassium 5.0 mEq/L (5.0 mmol/L) 4. Segmented neutrophils 40% (0.40) 5. Serum creatinine, 1 mg/dL (88.3 mcmol/L) 6. White blood cells, 3000 mm3 (3.0 × 109 /L)
Answer: 1, 2, 4, 6 Rationale: The normal values include the following: platelets 150,000 to 400,000 mm3 (150 to 400 × 109/L); sodium 135 to 145 mEq/L (135 to 145 mmol/L); potassium 3.5 to 5.0 mEq/L (3.5 to 5.0 mmol/L); segmented neutrophils 62% to 68% (0.62 to 0.68); serum creatinine male: 0.6 to 1.2 mg/dL (53 to 106 mcmol/L); female: 0.5 to 1.1 mg/dL (44 to 97 mcmol/L); and white blood cells 5000 to 10,000 mm3 (5.0 to 10.0 × 109 /L). The platelet level noted is low; the sodium level noted is high; the potassium level noted is normal; the segmented neutrophil level noted is low; the serum creatinine level noted is normal; and the white blood cell level is low
The nurse is explaining the appropriate methods for measuring an accurate temperature to an assistive personnel (AP). Which method, if noted by the UAP as being an appropriate method, indicates the need for further teaching? 1. Taking a rectal temperature for a client who has undergone nasal surgery 2. Taking an oral temperature for a client with a cough and nasal congestion 3. Taking an axillary temperature for a client who has just consumed hot coffee 4. Taking a temperature on the neck behind the ear using an electronic device for a client who is diaphoretic
Answer: 2 Rationale: An oral temperature should be avoided if the client has nasal congestion. One of the other methods of measuring the temperature should be used according to the equipment available. Taking a rectal temperature for a client who has undergone nasal surgery is appropriate. Other, less invasive measures should be used if available; if not available, a rectal temperature is acceptable. Taking an axillary temperature on a client who just consumed coffee is also acceptable; however, the axillary method of measurement is the least reliable, and other methods should be used if available. If electronic equipment is available and the client is diaphoretic, it is acceptable to measure the temperature on the neck behind the ear, avoiding the forehead.
A client has been admitted to the hospital for gastroenteritis and dehydration. The nurse determines that the client has received adequate volume replacement if the blood urea nitrogen (BUN) level drops to which value? 1. 3 mg/dL (1.08 mmol/L) 2. 15 mg/dL (5.4 mmol/L) 3. 29 mg/dL (10.44 mmol/L) 4. 35 mg/dL (12.6 mmol/L)
Answer: 2 Rationale: The normal BUN level is 10 to 20 mg/dL (3.6 to 7.1 mmol/L). Values of 29 mg/dL (10.44 mmol/L) and 35 mg/dL (12.6 mmol/L) reflect continued dehydration. A value of 3 mg/dL (1.08 mmol/L) reflects a lower than normal value, which may occur with fluid volume overload, among other conditions.
A client with atrial fibrillation who is receiving maintenance therapy of warfarin sodium has a prothrombin time (PT) of 35 seconds. On the basis of these laboratory values, the nurse anticipates which prescription? 1. Adding a dose of heparin sodium 2. Holding the next dose of warfarin 3. Increasing the next dose of warfarin 4. Administering the next dose of warfarin
Answer: 2 Rationale: The normal PT is 11 to 12.5 seconds (conventional therapy and SI units). A therapeutic PT level is 1.5 to 2 times higher than the normal level. Because the value of 35 seconds is high, the nurse should anticipate that the client would not receive further doses at this time. Therefore, the prescriptions noted in the remaining options are incorrect.
A staff nurse is precepting a new graduate nurse and the new graduate is assigned to care for a client with chronic pain. Which statement, if made by the new graduate nurse, indicates the need for further teaching regarding pain management? 1. "I will be sure to ask my client what his pain level is on a scale of 0 to 10." 2. "I know that I should follow up after giving medication to make sure it is effective." 3. "I will be sure to cue in to any indicators that the client may be exaggerating their pain." 4. "I know that pain in the older client might manifest as sleep disturbances or depression."
Answer: 3 Rationale: Pain is a highly individual experience, and the new graduate nurse should not assume that the client is exaggerating his pain. Rather, the nurse should frequently assess the pain and intervene accordingly through the use of both nonpharmacological and pharmacological interventions. The nurse should assess pain using a number-based scale or a picture-based scale for clients who cannot verbally describe their pain to rate the degree of pain. The nurse should follow up with the client after giving medication to ensure that the medication is effective in managing the pain. Pain experienced by the older client may be manifested differently than pain experienced by clients in other age groups, and they may have sleep disturbances, changes in gait and mobility, decreased socialization, and depression; the nurse should be aware of this attribute in this population.
An adult female client has a hemoglobin level of 10.8 g/dL (108 mmol/L). The nurse interprets that this result is most likely caused by which condition noted in the client's history? 1. Dehydration 2. Heart failure 3. Iron deficiency anemia 4. Chronic obstructive pulmonary disease
Answer: 3 Rationale: The normal hemoglobin level for an adult female client is 12 to 16 g/dL (120 to 160 mmol/L). Iron deficiency anemia can result in lower hemoglobin levels. Dehydration may increase the hemoglobin level by hemoconcentration. Heart failure and chronic obstructive pulmonary disease may increase the hemoglobin level as a result of the body's need for more oxygen-carrying capacity
A client with a history of upper gastrointestinal bleeding has a platelet count of 300,000 mm3 (300 × 109 /L). The nurse should take which action after seeing the laboratory results? 1. Report the abnormally low count. 2. Report the abnormally high count. 3. Place the client on bleeding precautions. 4. Place the normal report in the client's medical record
Answer: 4 Rationale: A normal platelet count ranges from 150,000 to 400,000 mm3 (150 to 400 × 109 /L). The nurse should place the report containing the normal laboratory value in the client's medical record. A platelet count of 300,000 mm3 (300 × 109/L) is not an elevated count. The count also is not low; therefore, bleeding precautions are not needed
A client brought to the emergency department states that he has accidentally been taking 2 times his prescribed dose of warfarin for the past week. After noting that the client has no evidence of obvious bleeding, the nurse plans to take which action? 1. Prepare to administer an antidote. 2. Draw a sample for type and crossmatch and transfuse the client. 3. Draw a sample for an activated partial thromboplastin time (aPTT) level. 4. Draw a sample for prothrombin time (PT) and international normalized ratio (INR).
Answer: 4 Rationale: The action that the nurse should take is to draw a sample for PT and INR level to determine the client's anticoagulation status and risk for bleeding. These results will provide information as to how to best treat this client (e.g., if an antidote such as vitamin K or a blood transfusion is needed). The aPTT monitors the effects of heparin therapy
A client is receiving a continuous intravenous infusion of heparin sodium to treat deep vein thrombosis. The client's activated partial thromboplastin time (aPTT) is 65 seconds. The nurse anticipates that which action is needed? 1. Discontinuing the heparin infusion 2. Increasing the rate of the heparin infusion 3. Decreasing the rate of the heparin infusion 4. Leaving the rate of the heparin infusion as is
Answer: 4 Rationale: The normal aPTT varies between 30 and 40 seconds (30 and 40 seconds), depending on the type of activator used in testing. The therapeutic dose of heparin for treatment of deep vein thrombosis is to keep the aPTT between 1.5 (45 to 60) and 2.5 (75 to 100) times normal. This means that the client's value should not be less than 45 seconds or greater than 100 seconds. Thus, the client's aPTT is within the therapeutic range and the dose should remain unchanged.
A client with diabetes mellitus has a glycosylated hemoglobin A1c level of 8%. On the basis of this test result, the nurse plans to teach the client about the need for which measure? 1. Avoiding infection 2. Taking in adequate fluids 3. Preventing and recognizing hypoglycemia 4. Preventing and recognizing hyperglycemia
Answer: 4 Rationale: The normal reference range for the glycosylated hemoglobin A1c is less than 6.0%. This test measures the amount of glucose that has become permanently bound to the red blood cells from circulating glucose. Erythrocytes live for about 120 days, giving feedback about blood glucose for the past 120 days. Elevations in the blood glucose level will cause elevations in the amount of glycosylation. Thus, the test is useful in identifying clients who have periods of hyperglycemia that are undetected in other ways. The estimated average glucose for a glycosylated hemoglobin A1c of 8% is 205 mg/dL (11.42 mmol/L). Elevations indicate continued need for teaching related to the prevention of hyperglycemic episodes.
The nurse is caring for a postoperative client who is receiving demand-dose hydromorphone via a patient-controlled analgesia (PCA) pump for pain control. The nurse enters the client's room and finds the client drowsy and records the following vital signs: temperature 97.2° F (36.2° C) orally, pulse 52 beats per minute, blood pressure 101/58 mm Hg, respiratory rate 11 breaths per minute, and SpO2 of 93% on 3 liters of oxygen via nasal cannula. Which action should the nurse take next? 1. Document the findings. 2. Attempt to arouse the client. 3. Contact the primary health care provider (PHCP) immediately. 4. Check the medication administration history on the PCA pump
The primary concern with opioid analgesics is respiratory depression and hypotension. Based on the assessment findings, the nurse should suspect opioid overdose. The nurse should first attempt to arouse the client and then reassess the vital signs. The vital signs may begin to normalize once the client is aroused, because sleep can also cause decreased heart rate, blood pressure, respiratory rate, and oxygen saturation. The nurse should also check to see how much medication has been taken via the PCA pump and should continue to monitor the client closely to determine whether further action is needed. The nurse should contact the PHCP and document the findings after all data are collected, after the client is stabilized, and if an abnormality still exists after arousing the client.
