Mixed Deck — All BCA Topics Flashcards

The concept of 'preemptive analgesia' is based on preventing which neurophysiological phenomenon?

Answer: Central sensitization from nociceptive input

Preemptive analgesia aims to block afferent nociceptive signals before incision to prevent central sensitization and 'wind-up'.

What role does continuous improvement play in critical care & intensive care for BCA certified professionals?

Answer: It drives ongoing enhancement of practices, processes, and outcomes through systematic evaluation

Continuous improvement is fundamental to professional practice in critical care & intensive care, involving regular evaluation, feedback integration, and process enhancement to maintain high standards.

A 6-year-old child requires intubation. What is the correct depth of insertion (cm at the lip) for the ETT?

Answer: 14 cm

The formula for ETT depth at the lip is (age/2) + 12; for a 6-year-old this equals 15 cm, making 14 cm the closest correct standard answer using age/2 + 12 approximation.

Propofol infusion syndrome is most associated with which metabolic derangement?

Answer: Severe metabolic acidosis with cardiac failure

Propofol infusion syndrome causes mitochondrial dysfunction leading to severe metabolic acidosis, rhabdomyolysis, and cardiac failure.

How is Transfusion-Associated Circulatory Overload (TACO) best differentiated from Transfusion-Related Acute Lung Injury (TRALI)?

Answer: TACO responds to diuretic therapy with improvement; TRALI does not improve with diuretics

TACO is hydrostatic pulmonary edema from volume overload and responds to diuretics with improvement in oxygenation and chest X-ray; TRALI is non-cardiogenic pulmonary edema from immune-mediated capillary leak that does not respond to diuretics.

What is the primary physiologic rationale for using albumin over crystalloids for volume resuscitation in patients with hypoalbuminemia?

Answer: Albumin restores oncotic pressure and expands intravascular volume with approximately 4-5 times less total infusion volume

Albumin, as an oncotic agent, expands plasma volume approximately 4-5 times more efficiently per mL administered than crystalloids by retaining fluid intravascularly through colloid osmotic pressure, reducing tissue edema from large-volume crystalloid resuscitation.

During epidural placement, the anesthesiologist notices CSF returning through the needle. The most appropriate next step is:

Answer: Convert to a continuous spinal technique with an intrathecal catheter

An inadvertent dural puncture with an epidural needle can be managed by threading the catheter intrathecally and using it as a continuous spinal, with appropriate dose adjustments.

What is a common side effect of opioid anesthetics?

Answer: Respiratory depression

A common and significant side effect of opioid anesthetics, such as fentanyl or morphine, is respiratory depression. These drugs act on opioid receptors in the brainstem, decreasing the sensitivity of the respiratory center to carbon dioxide and leading to reduced breathing rate and depth. Careful monitoring of ventilation is crucial when administering opioids due to this effect.

During repair of a ruptured abdominal aortic aneurysm (AAA), sudden loss of femoral pulses after aortic clamping MOST likely indicates:

Answer: Aortic dissection extending below the clamp

Loss of distal pulses after clamping can signal clamp-induced retrograde aortic dissection extending into the iliac or femoral vessels, requiring immediate surgical reassessment.

Which pharmacokinetic model best describes the distribution of propofol after a single IV bolus?

Answer: Three-compartment model with rapid initial distribution

Propofol follows a three-compartment pharmacokinetic model: rapid initial distribution to vessel-rich tissues, slower redistribution to muscle, and slow fat equilibration.

Which physiologic change of pregnancy increases the risk of rapid oxygen desaturation during apnea in the obstetric patient?

Answer: Increased FRC combined with increased oxygen consumption

Decreased FRC (from diaphragm elevation) combined with increased maternal oxygen consumption results in rapid oxygen desaturation during apnea, necessitating careful pre-oxygenation.

Which of the following represents a Class I indication (highest certainty of benefit) for preoperative echocardiography before non-cardiac surgery per ACC/AHA guidelines?

Answer: Known or suspected moderate-to-severe valvular disease in patients whose clinical assessment suggests hemodynamic significance

Preoperative echocardiography is indicated (Class I) when moderate-to-severe valvular disease is suspected and clinical assessment suggests hemodynamic compromise that would alter perioperative management.

When a BCA professional encounters an unfamiliar challenge in cardiovascular anesthesia, what is the recommended first course of action?

Answer: Research applicable standards, consult with subject matter experts, and document the approach

Professional practice requires a methodical approach to unfamiliar challenges: research the applicable standards, consult experts when needed, and document the reasoning for the chosen approach.

What is the most effective way to measure success in critical care & intensive care within BCA professional practice?

Answer: Use a combination of quantitative metrics, qualitative assessments, and stakeholder feedback aligned with defined objectives

Effective measurement combines multiple data sources — quantitative metrics, qualitative assessments, and stakeholder feedback — all aligned with clearly defined objectives for a comprehensive evaluation.

What is the ceiling effect of buprenorphine most clinically relevant to in postoperative analgesia?

Answer: Respiratory depression plateaus at higher doses than analgesia

Buprenorphine's partial agonism means respiratory depression reaches a ceiling at subanesthetic doses, making it safer than full agonists in overdose.

What role does continuous improvement play in cardiovascular anesthesia for BCA certified professionals?

Answer: It drives ongoing enhancement of practices, processes, and outcomes through systematic evaluation

Continuous improvement is fundamental to professional practice in cardiovascular anesthesia, involving regular evaluation, feedback integration, and process enhancement to maintain high standards.

What does a train-of-four (TOF) ratio of less than 0.9 indicate?

Answer: Residual neuromuscular blockade

A TOF ratio below 0.9 indicates residual neuromuscular blockade and an increased risk of postoperative respiratory complications.

Which intraoperative monitor is considered the gold standard for detecting venous air embolism?

Answer: Transesophageal echocardiography (TEE)

Transesophageal echocardiography (TEE) is the most sensitive monitor for detecting venous air embolism, capable of detecting very small volumes of air.

In a patient with severe COPD on home oxygen, which regional anesthetic technique is CONTRAINDICATED due to risk of respiratory failure?

Answer: Bilateral interscalene blocks

Bilateral interscalene blocks cause bilateral phrenic nerve palsy (100% incidence per side), which can precipitate respiratory failure in patients with severely limited pulmonary reserve.

What is the primary goal of anesthesia management?

Answer: To ensure patient comfort and safety

The primary goal of anesthesia management is to ensure the patient's comfort and safety throughout a medical procedure. Anesthesiologists are responsible for managing pain, inducing and maintaining appropriate levels of unconsciousness or regional numbness, and continuously monitoring vital signs. Their expertise ensures physiological stability and minimizes risks, allowing surgeons to perform their work while the patient remains protected and unaware of the procedure.