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Occasional bubbling in the water-seal chamber.: Intermittent bubbling in the water-seal chamber may be expected in clients with a pneumothorax during exhalation or coughing as residual air escapes from the pleural space. However, bubbling alone does not indicate that the lung has re-expanded. Continuous bubbling is abnormal and suggests an air leak within the chest drainage system or from the client's pleural cavity. Therefore, occasional bubbling is not the best indicator of successful lung re-expansion.

Oxygen saturation of 95%.: An oxygen saturation of 95% indicates adequate oxygenation but does not specifically confirm complete lung re-expansion. Oxygen saturation can remain within the normal range despite the presence of a small pneumothorax or residual pleural fluid because compensatory mechanisms may maintain adequate gas exchange. Confirmation of lung re-expansion requires assessment of the chest drainage system, clinical findings, and often a chest radiograph.

No reports of pleuritic chest pain.: Resolution of pleuritic chest pain may indicate that pleural inflammation or irritation has improved, but it is not a reliable indicator that the lung has completely re-expanded. Pain perception varies among individuals and may also be influenced by analgesic medications. The nurse should rely on objective findings, such as the absence of tidaling and radiographic evidence, rather than symptom improvement alone to determine whether lung re-expansion has occurred.

Acute bilateral pleural effusion: Bilateral pleural effusions involve the accumulation of excess fluid within both pleural spaces and may occur as a complication of heart failure. Clinical manifestations include progressive dyspnea, decreased breath sounds, dullness to percussion, and reduced chest expansion rather than the sudden awakening with a sensation of suffocation. Although pleural effusions can contribute to respiratory distress, they are not the specific term used to describe this classic nocturnal symptom.

Pulsus alternans: Pulsus alternans is a physical examination finding characterized by alternating strong and weak peripheral pulse amplitudes despite a regular heart rhythm. It indicates severe left ventricular systolic dysfunction and is detected by palpation of the arterial pulse or blood pressure measurement rather than by the client's reported symptoms. It does not describe episodes of nighttime respiratory distress or awakening with dyspnea.

Orthopnea: Orthopnea is shortness of breath that occurs when the client lies flat and is relieved by sitting upright or using multiple pillows to sleep. Unlike paroxysmal nocturnal dyspnea, orthopnea develops immediately or shortly after assuming the supine position rather than awakening the client after several hours of sleep. Because this client specifically reports waking suddenly in the middle of the night feeling as though they were suffocating, the finding is more consistent with paroxysmal nocturnal dyspnea than orthopnea.

Prepare the client for an immediate portable chest radiograph to confirm the diagnosis before treatment: Although a chest radiograph can confirm the presence of a pneumothorax under stable circumstances, obtaining imaging in a client with suspected tension pneumothorax is contraindicated because it delays definitive treatment. The client's findings are sufficient to establish a clinical diagnosis. Delaying decompression while awaiting radiographic confirmation may allow progression to complete cardiovascular collapse and cardiac arrest.

Place the client in high Fowler's position to maximize lung expansion while awaiting additional provider orders: Positioning the client in high Fowler's position may improve comfort and slightly reduce the work of breathing by facilitating diaphragmatic excursion. However, it does not relieve the trapped intrapleural air or correct the increasing intrathoracic pressure responsible for mediastinal shift and obstructive shock. Although supportive positioning is appropriate, it must never delay the definitive intervention.

Continue administering high-flow oxygen via a nonrebreather mask while closely monitoring for clinical improvement: High-flow oxygen is an important supportive intervention because it improves oxygen delivery and promotes reabsorption of pleural air. However, oxygen therapy alone cannot relieve the one-way valve mechanism responsible for the tension pneumothorax or reverse the obstructive shock caused by impaired venous return. The client's oxygen saturation remains critically low despite receiving 15 L/min via a nonrebreather mask, indicating that definitive decompression is urgently required.

"They will circulate my blood on a machine during the surgery": Traditional CABG procedures are commonly performed using cardiopulmonary bypass (CPB), often referred to as the heart-lung machine. During this process, the machine temporarily assumes the functions of the heart and lungs, maintaining systemic circulation and oxygenation while the surgeon operates on a motionless heart. Although some CABG procedures are performed "off-pump," this statement reflects an appropriate understanding of the conventional surgical technique and does not indicate the need for additional teaching.

"I will need to take an aspirin every day after the surgery to keep the graft open.": Daily aspirin therapy is routinely prescribed after CABG unless contraindicated because it inhibits platelet aggregation and reduces the risk of thrombus formation within the bypass graft. Long-term antiplatelet therapy improves graft patency, decreases the incidence of myocardial infarction, and reduces cardiovascular mortality. This statement demonstrates an accurate understanding of postoperative management and does not require further teaching.

"They will use an artery near my heart to go around the area that is blocked.": The left internal mammary artery originates from the subclavian artery and runs along the inside of the chest wall adjacent to the heart. During CABG, the distal end of the artery is surgically connected to the coronary artery beyond the obstructed segment while preserving its native blood supply. This technique provides excellent long-term graft patency and is considered the preferred conduit for bypassing the left anterior descending coronary artery. This statement accurately reflects the planned procedure and indicates appropriate understanding.

Administer oxygen at 2 L/min: Supplemental oxygen is not indicated because the client's oxygen saturation is 96%, which is within the normal range and demonstrates adequate tissue oxygenation. Current evidence recommends administering oxygen after myocardial infarction only when hypoxemia is present, typically with an oxygen saturation below 90%, or if the client exhibits signs of respiratory distress. Unnecessary oxygen administration provides no additional benefit and may contribute to coronary vasoconstriction in some clients.

Obtain a bedside commode.: A bedside commode is appropriate for clients who cannot tolerate walking because of chest pain, dyspnea, hypotension, excessive fatigue, or significant changes in vital signs during activity. This client returned from the bathroom with a heart rate of 88 beats/min, respiratory rate of 16 breaths/min, and oxygen saturation of 96%, all of which indicate good physiological tolerance to the activity. There is no evidence suggesting that reducing the client's activity level is necessary.

Suggest the client use a bedpan: Recommending the use of a bedpan unnecessarily restricts the client's mobility and may contribute to deconditioning, constipation, and decreased independence. Bedpans are generally reserved for clients who are hemodynamically unstable, on strict bed rest, or unable to ambulate safely. Since this client tolerated ambulation to the bathroom without signs of cardiac or respiratory compromise, the use of a bedpan is not warranted.

Human papilloma virus infection: Human papilloma virus (HPV) primarily infects the epithelial cells of the cervix, vulva, vagina, penis, and anus, causing genital warts and increasing the risk of cervical and other anogenital cancers. Although HPV is a common sexually transmitted infection, it does not typically cause inflammation, scarring, or structural damage to the fallopian tubes. Therefore, HPV infection is not considered a significant risk factor for the development of an ectopic pregnancy.

Syphilis: Syphilis, caused by the spirochete Treponema pallidum, is a systemic sexually transmitted infection that progresses through primary, secondary, latent, and tertiary stages if left untreated. Although untreated maternal syphilis can lead to miscarriage, stillbirth, congenital syphilis, and other adverse pregnancy outcomes, it does not commonly produce tubal scarring or mechanical obstruction of the fallopian tubes. Consequently, syphilis is not one of the major disease processes associated with ectopic pregnancy.

Genital herpes: Genital herpes is caused by the herpes simplex virus (HSV), usually HSV-2, and is characterized by recurrent painful vesicular or ulcerative lesions involving the genital mucosa. Although herpes infection can be transmitted to the neonate during vaginal delivery and may require antiviral therapy or cesarean birth, it does not cause the tubal inflammation or scarring responsible for ectopic implantation.

Monitor the client for prolonged hypotension because the medication has a half-life of approximately 30 minutes.: Adenosine does not have a prolonged duration of action. Its plasma half-life is less than 10 seconds because it is rapidly taken up by erythrocytes and vascular endothelial cells and metabolized almost immediately. Although transient hypotension may occur, prolonged hypotension is uncommon and is not expected due to the medication's extremely short action. Therefore, this statement is inaccurate and does not reflect the primary nursing consideration during administration.

Expect the medication to gradually slow the ventricular rate over the next 10 to 15 minutes.: Adenosine does not produce a gradual reduction in heart rate. Instead, its therapeutic effect occurs within seconds of administration because of its extremely short half-life and rapid onset of action. If effective, the tachyarrhythmia terminates almost immediately, followed by restoration of sinus rhythm. Waiting 10 to 15 minutes for a gradual response would indicate a misunderstanding of the medication's pharmacokinetics and mechanism of action.

Dilute the medication in 50 ml of normal saline and infuse it over 5 minutes to reduce adverse effects.: Adenosine should never be administered as a slow infusion because it is rapidly metabolized before reaching the heart. The medication must be given as a rapid IV bolus, preferably through a large proximal vein, followed immediately by a 20 mL normal saline flush to ensure that the drug reaches the heart before it is inactivated. Administering it slowly would markedly reduce or eliminate its therapeutic effect and fail to terminate the supraventricular tachycardia.

Only the flail segment pulling inward during expiration: During normal expiration, intrathoracic pressure becomes positive, causing the flail segment to move outward, not inward. Therefore, inward movement of the flail segment during expiration is inconsistent with the characteristic paradoxical motion observed in flail chest. Recognizing the direction of chest wall movement is important because paradoxical motion is a key clinical sign that distinguishes flail chest from other thoracic injuries.

The entire chest pulling inward during expiration: In normal respiration, the entire chest wall does not move inward uniformly during expiration in a manner that would indicate flail chest. The defining feature of flail chest is that only the unstable segment moves paradoxically, while the remainder of the chest wall continues to move normally. Uniform inward movement of the entire chest does not represent the pathophysiology of this injury.

The entire chest pushing outward during inspiration: During normal inspiration, the chest wall expands outward as the diaphragm contracts and intrathoracic pressure decreases. In flail chest, however, the unstable rib segment moves inward, opposite to the movement of the intact chest wall. Therefore, outward movement of the entire chest during inspiration would not demonstrate the paradoxical motion that is characteristic of a flail chest injury.