What is the most likely condition for a client who had a total hip arthroplasty and presents with tachypnea, productive green sputum, and low oxygen saturation?

• A. Pneumonia
• B. Pulmonary embolism
• C. Heart failure
• D. Atelectasis

Answer: (A)

The clinical presentation described—tachypnea, productive green sputum, and low oxygen saturation—strongly suggests pneumonia as the most likely condition following a total hip arthroplasty. After undergoing this type of surgery, patients are often at increased risk for pulmonary complications due to factors such as immobility, pain, and the effects of anesthesia, which can lead to respiratory issues.

Pneumonia is characterized by the presence of inflammation in the lungs typically caused by infection, resulting in symptoms like cough, sputum production, and difficulty breathing, all of which align with the symptoms presented. The green sputum indicates a possible bacterial infection, which is consistent with pneumonia.

In contrast, while pulmonary embolism is a serious condition that can arise after orthopedic surgery and may also present with tachypnea and low oxygen saturation, it generally does not present with productive sputum. Heart failure could cause similar respiratory symptoms but would also present with other indicators like peripheral edema or jugular venous distension, which are not mentioned here. Lastly, atelectasis, a collapse of lung tissue, can lead to low oxygen saturation and may cause similar respiratory symptoms, but it typically does not result in productive green sputum. Therefore, all these factors underscore why