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Zorluk: ZorPhysiological Adaptation

During the bedside placement of a left subclavian central venous catheter, the client suddenly becomes extremely restless and diaphoretic, reporting severe chest tightness. The cardiac monitor reveals sinus tachycardia at 135 beats/min. Hemodynamic assessment demonstrates a blood pressure drop from 138/82 mm Hg to 86/74 mm Hg, and a respiratory rate of 28 breaths/min. The nurse notes that the neck veins remain markedly distended when the head of the bed is elevated to 45 degrees, and heart tones are difficult to auscultate. Which of the following immediate interventions are indicated? (Select all that apply.)

  1. Prepare the client for an emergent bedside echocardiogram and pericardiocentesisCevap
  2. Administer a rapid intravenous bolus of 0.9% sodium chlorideCevap
  3. C
    Administer intravenous furosemide to alleviate the jugular venous congestion
  4. D
    Initiate positive pressure ventilation via a continuous positive airway pressure (CPAP) device
  5. Administer high-flow supplemental oxygen via a non-rebreather maskCevap
  6. F
    Administer sublingual nitroglycerin to address the client's reports of chest tightness

Cevap

The indicated immediate interventions are to prepare the client for an emergent echocardiogram and pericardiocentesis, administer a rapid isotonic intravenous fluid bolus, and apply high-flow supplemental oxygen.
The client's presentation of a rapidly narrowing pulse pressure, tachycardia, jugular venous distention, and muffled heart tones during a central venous catheter insertion is the classic manifestation of acute cardiac tamponade (Beck's triad). This represents a medical emergency resulting in obstructive shock. The compression of the heart prevents adequate ventricular filling during diastole. The definitive life-saving intervention is needle drainage of the pericardial sac (pericardiocentesis), typically guided by an emergent echocardiogram. Until the procedure can be performed, administering a rapid isotonic intravenous fluid bolus is critical to artificially elevate right-sided filling pressures, forcing blood into the compressed chambers to maintain cardiac output. High-flow supplemental oxygen should also be applied to maximize tissue oxygenation in a compromised hemodynamic state.

Adım Adım Çözüm

1
Analyze the client's sudden physiological changes following an invasive central line procedure.
The client developed a narrowing pulse pressure (from 56 to 12 mm Hg), tachycardia, distended neck veins, and muffled heart sounds.
These assessment findings represent Beck's triad, indicating acute cardiac tamponade (a form of obstructive shock) likely caused by accidental puncture during the catheter insertion.
2
Identify the primary physiological priority to stabilize the client.
The accumulation of fluid in the pericardial space is restricting ventricular filling, leading to a critical drop in cardiac output.
Interventions must focus on relieving the pericardial pressure and maximizing venous return to overcome the compression.
3
Select interventions that support the priority goals while avoiding those that decrease preload or venous return.
Preparation for pericardiocentesis, fluid administration, and oxygen therapy are selected. Diuretics, vasodilators, and positive pressure ventilation are strictly avoided.
Fluids increase the preload needed to push blood into the compressed heart chambers, while definitively draining the fluid is required for survival.

Anahtar Kavram

Recognition and acute management of obstructive shock caused by cardiac tamponade
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Konular

Physiological Adaptation

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