A nurse is reviewing the laboratory results of a client who is postoperative and has a respiratory rate of 7/min. The arterial blood gas (ABG) values include: pH 7.22 PaCO2 68 mm Hg Base excess -2 PaO2 78 mm Hg Oxygen saturation 80% Bicarbonate 28 mEq/L. Which of the following interpretations of the ABG values should the nurse make?

A. Expiratory wheeze

Expiratory wheeze is a high-pitched, musical sound heard primarily during expiration. It occurs when air passes through narrowed airways due to bronchoconstriction, inflammation, and increased mucus production, which are characteristic features of an acute asthma exacerbation. Expiratory wheezes are commonly heard upon auscultation of the chest in individuals experiencing asthma exacerbations.

B. Pleural friction rub

Pleural friction rub is a dry, crackling or grating sound heard during both inspiration and expiration. It typically occurs when the inflamed pleural surfaces rub against each other during breathing. Pleural friction rub is associated with conditions such as pleurisy (inflammation of the pleura) or pleural effusion (accumulation of fluid in the pleural space), rather than asthma exacerbations.

C. Fine rales

Fine rales, also known as fine crackles, are brief, high-pitched, discontinuous sounds heard primarily during inspiration. They are typically associated with conditions involving the small airways and alveoli, such as pulmonary fibrosis or congestive heart failure. Fine rales are not commonly heard in asthma exacerbations.

D. Rhonchi

Rhonchi are low-pitched, snoring or rattling sounds heard primarily during expiration. They result from the passage of air through airways obstructed by thick mucus or secretions. While rhonchi may be heard in individuals experiencing asthma exacerbations, they are less characteristic than expiratory wheezes, which are more commonly associated with asthma exacerbations. Rhonchi are often associated with conditions such as chronic bronchitis or pneumonia.

A. Notify the provider.

This choice suggests involving the healthcare provider immediately. While notifying the provider might eventually be necessary if the issue persists, it's not the initial action in this scenario. The nurse should first assess and troubleshoot the situation before escalating it to the provider.

B. Verify that the suction regulator is on.

This is the correct choice. When there is no bubbling in the suction control chamber of a chest tube, it may indicate that suction is not being applied properly. Verifying that the suction regulator is turned on and set to the correct level ensures that suction is being delivered to the chest tube.

C. Continue to monitor the client because this is an expected finding.

This choice is incorrect. The absence of bubbling in the suction control chamber is not an expected finding and suggests a potential problem with the suction system. Ignoring this finding without taking any action could lead to complications for the client.

D. Milk the chest tube to dislodge any clots in the tubing that may be occluding it.

Milking the chest tube is a technique used to maintain patency and promote drainage in chest tubes, but it should not be the first action when there is no bubbling in the suction control chamber. This action does not address the underlying issue of inadequate suction and may not be appropriate without first ensuring that suction is functioning correctly.