168. The nurse has just reassessed the condition of a postoperative client who was admitted 1 hour ago to the surgical unit. The nurse plans to monitor which parameter most carefully during the next hour? 1. Urinary output of 20 mL/hour 2. Temperature of 37.6 °C (99.6 °F) 3. Blood pressure of 100/70 mm Hg 4. Serous drainage on the surgical dressing - 1 Rationale: Urine output should be maintained at a minimum of 30 mL/hour for an adult. An output of less than 30 mL for 2 consecutive hours should be reported to the health care provider. A temperature higher than 37.7 °C (100 °F) or lower than 36.1 °C (97 °F) and a falling systolic blood pressure, lower than 90 mm Hg, are usually considered reportable immediately. The client's preoperative or baseline blood pressure is used to make informed postoperative comparisons. Moderate or light serous drainage from the surgical site is considered normal. 169. The nurse is teaching a client about coughing and deep-breathing techniques to prevent postoperative complications. Which statement is most appropriate for the nurse to make to the client at this time as it relates to these techniques? 1. "Use of an incentive spirometer will help prevent pneumonia." 2. "Close monitoring of your oxygen saturation will detect hypoxemia." 3. "Administration of intravenous fluids will prevent or treat fluid imbalance." 4. "Early ambulation and administr