Welcome to your Test 9 Which of the following volatile anesthetics is most likely to cause an increase in cerebral blood flow and intracranial pressure (ICP)? Isoflurane Desflurane Sevoflurane Nitrous oxide None In the context of anesthesia, which of the following medications is most commonly associated with malignant hyperthermia? Propofol Fentanyl Succinylcholine Midazolam None Which of the following is the primary mechanism of action for opioid analgesics in anesthesia? Inhibition of the NMDA receptors Activation of GABA receptors Activation of mu-opioid receptors Inhibition of cyclooxygenase None Which of the following is the most significant factor influencing the speed of onset of a volatile anesthetic agent? Blood/gas partition coefficient Cardiac output Solubility of the agent in tissues Age of the patient None What is the primary complication of administering large volumes of crystalloid fluids during surgery? Hyperkalemia Hypothermia Hypovolemia Pulmonary edema None What is the most appropriate initial treatment for local anesthetic systemic toxicity (LAST)? Intravenous calcium Lipid emulsion therapy Sodium bicarbonate infusion Hyperventilation None Which of the following is a common side effect of etomidate when used for induction of anesthesia? Severe hypotension Adrenal suppression Bronchospasm Increased intracranial pressure None Which of the following is the best indicator for assessing the depth of anesthesia during general anesthesia? Heart rate End-tidal carbon dioxide (ETCO2) Bispectral index (BIS) Blood pressure None A 45-year-old patient is scheduled for elective surgery and is currently on a selective serotonin reuptake inhibitor (SSRI) for depression. What is the primary concern with SSRIs in the perioperative period? Increased risk of bleeding Risk of serotonin syndrome Decreased anesthetic requirements Increased risk of postoperative infection None Which of the following factors most directly influences the metabolism of propofol in the liver? Plasma protein binding Hepatic blood flow Renal function Duration of infusion None A 60-year-old male with a history of chronic obstructive pulmonary disease (COPD) is undergoing surgery. Which of the following anesthetic agents is most likely to cause respiratory depression in this patient? Isoflurane Nitrous oxide Propofol Sevoflurane None During a general anesthesia induction, a patient develops severe bradycardia and hypotension after administration of propofol. What is the most likely cause? Propofol-induced sympathetic blockade Anaphylactic reaction to propofol Propofol-induced vagal stimulation Anesthesia-related hypovolemia None Which of the following muscle relaxants is most likely to cause a prolonged duration of action in a patient with hepatic dysfunction? Succinylcholine Rocuronium Vecuronium Atracurium None Which of the following is the most likely cause of hypotension in the immediate postoperative period following major abdominal surgery? Acute blood loss Drug-induced vasodilation Perioperative fluid overload Diaphragmatic splinting due to pain None Which of the following is a characteristic feature of the "third-space" fluid shift following surgery? Decreased interstitial fluid volume Dehydration of cells Accumulation of fluid in the peritoneal cavity Decreased vascular volume None The use of nitrous oxide as an anesthetic agent is contraindicated in which of the following conditions? Pneumothorax Asthma Severe hypovolemia Chronic kidney disease None A patient undergoing general anesthesia for surgery develops tachycardia, hyperthermia, and muscle rigidity. What is the most likely diagnosis? Serotonin syndrome Neuroleptic malignant syndrome Malignant hyperthermia Thyroid storm None Which of the following is the most accurate method for determining the depth of neuromuscular blockade during anesthesia? Peripheral nerve stimulation End-tidal carbon dioxide (ETCO2) monitoring Blood gas analysis Pulse oximetry None In which of the following situations should the use of epidural anesthesia be avoided? Acute alcohol intoxication Severe aortic stenosis Moderate hypovolemia Diabetes mellitus None Which of the following agents is most likely to cause an allergic reaction when used as an adjunct to general anesthesia? Propofol Sevoflurane Rocuronium Atracurium None A 45-year-old patient with a history of asthma is undergoing surgery under general anesthesia. The anesthetist notices an increase in end-tidal CO2 (ETCO2) and develops a suspicion of bronchospasm. Which of the following is the most likely cause of the bronchospasm? Sevoflurane Propofol Succinylcholine Nitrous oxide None A 30-year-old patient undergoing surgery under general anesthesia presents with a history of pseudotumor cerebri (idiopathic intracranial hypertension). Which of the following is the most important consideration when choosing anesthetic agents for this patient? Avoiding agents that increase intracranial pressure Ensuring adequate pain control Minimizing the risk of allergic reactions Avoiding prolonged periods of hypoxia None What is the main advantage of using total intravenous anesthesia (TIVA) with propofol and remifentanil compared to inhalational anesthesia in patients with coronary artery disease (CAD)? Reduced risk of postoperative nausea and vomiting Better control of hemodynamics Reduced risk of malignant hyperthermia Lower incidence of hypothermia None Which of the following is the most common complication associated with spinal anesthesia? Post-dural puncture headache Hypotension Nausea and vomiting Respiratory depression None Which of the following local anesthetics has the longest duration of action when used for a peripheral nerve block? Lidocaine Bupivacaine Mepivacaine Ropivacaine None A 50-year-old patient with a history of hypertension is undergoing surgery under general anesthesia. The anesthesiologist notes that the blood pressure remains elevated despite the administration of deep anesthesia. Which of the following is the most likely cause of the persistent hypertension? Pain Light anesthesia Preexisting hypertension Drug interactions None Which of the following is the best indicator for assessing the adequacy of neuromuscular blockade during surgery? End-tidal carbon dioxide (ETCO2) Blood pressure Train-of-four ratio Oxygen saturation None What is the most likely cause of "failure to extubate" following surgery in a patient who has received general anesthesia with muscle relaxants? Inadequate reversal of neuromuscular blockade Postoperative pain Hypoventilation due to opioid use Anxiety None Which of the following is the most important reason for preoperative fasting before anesthesia? Prevention of aspiration Prevention of dehydration Avoidance of drug interactions Prevention of nausea and vomiting None Which of the following is the most effective way to prevent postoperative nausea and vomiting (PONV) in high-risk patients? Administration of corticosteroids Use of high-dose opioids Early mobilization after surgery Use of general anesthesia only None A 60-year-old patient with a history of obesity and sleep apnea is undergoing surgery under general anesthesia. Which of the following measures is most important in preventing postoperative respiratory complications? Extubating the patient as soon as possible Use of opioid analgesics to control pain Continuous positive airway pressure (CPAP) therapy Administering high-dose corticosteroids postoperatively None Which of the following anesthetic agents is most likely to cause an increase in intracranial pressure (ICP) in a patient with head trauma? Propofol Sevoflurane Nitrous oxide Ketamine None Which of the following is the most likely cause of postoperative delirium in an elderly patient after a major surgery? Hypoxia Electrolyte disturbances Preoperative sedation Acute alcohol withdrawal None A 70-year-old patient with chronic kidney disease (CKD) is undergoing surgery under general anesthesia. Which of the following anesthetic agents should be used with caution in this patient due to potential renal toxicity? Propofol Ketamine Isoflurane Cisatracurium None In a patient with a history of malignant hyperthermia, which of the following agents is contraindicated? Isoflurane Desflurane Sevoflurane Sevoflurane None Which of the following local anesthetics is most likely to cause systemic toxicity when used for a major regional block in a patient with liver disease? Lidocaine Bupivacaine Mepivacaine Ropivacaine None During a lumbar epidural procedure, a patient experiences a sudden drop in blood pressure and bradycardia. Which of the following is the most likely cause of these symptoms? Spinal block Hemorrhage Epidural hematoma Anaphylaxis None A patient with a history of substance abuse requires general anesthesia. Which of the following is the most appropriate anesthetic agent to minimize the risk of postoperative complications in this patient? Sevoflurane Propofol Ketamine Etomidate None A 55-year-old patient undergoing cardiac surgery requires deep hypothermic circulatory arrest. Which of the following is the primary concern during the rewarming phase? Hyperkalemia Acidosis Hypoglycemia Reperfusion injury None A 75-year-old patient with a history of Parkinson's disease is undergoing elective surgery under general anesthesia. Which of the following is the most important consideration for anesthetic management in this patient? Avoiding nitrous oxide Maintaining dopaminergic therapy Administering high-dose corticosteroids Using a non-depolarizing muscle relaxant None A 60-year-old patient with a history of asthma is undergoing surgery under general anesthesia. Which of the following intraoperative management strategies is most important for preventing bronchospasm? Avoiding volatile anesthetics Administering a preoperative beta-agonist Using nitrous oxide Administering high-dose opioids None A patient with a history of chronic obstructive pulmonary disease (COPD) is undergoing major abdominal surgery. Which of the following anesthetic agents should be used with caution in this patient due to the risk of respiratory depression? Propofol Isoflurane Succinylcholine Fentanyl None A 70-year-old patient with a history of atrial fibrillation requires general anesthesia for elective surgery. Which of the following is the most appropriate strategy to manage anticoagulation therapy in this patient before surgery? Discontinue anticoagulation therapy for 48 hours before surgery Switch to low-molecular-weight heparin (LMWH) preoperatively Continue anticoagulation therapy without interruption Bridge with vitamin K antagonists preoperatively None During a general anesthetic induction, a patient develops a sudden increase in end-tidal CO2 (ETCO2) and a decrease in oxygen saturation (SpO2). What is the most likely cause of these changes? Bronchospasm Hypoventilation Pulmonary embolism Malignant hyperthermia None A patient undergoing abdominal surgery develops a sudden increase in heart rate, blood pressure, and temperature, along with muscle rigidity and dark brown urine. Which of the following is the most likely diagnosis? Serotonin syndrome Malignant hyperthermia Neuroleptic malignant syndrome Acute adrenal insufficiency None Which of the following is the primary mechanism of action of the local anesthetic bupivacaine? Blockade of sodium channels Inhibition of calcium channels Inhibition of potassium channels Potentiation of GABA receptors None A 45-year-old patient undergoing knee surgery under general anesthesia has a history of difficult intubation. Which of the following is the most appropriate strategy for managing airway concerns in this patient? Preoperative use of an airway device Awake fiberoptic intubation Use of succinylcholine to facilitate intubation None Which of the following is the most appropriate choice for muscle relaxation in a patient with renal insufficiency undergoing general anesthesia? Succinylcholine Rocuronium Vecuronium Cisatracurium None A 50-year-old patient undergoing surgery requires deep sedation for a diagnostic procedure. Which of the following is the most appropriate sedative for this patient? Propofol Midazolam Ketamine Isoflurane None A 65-year-old patient with diabetes is undergoing surgery under regional anesthesia. Which of the following is the most important consideration for this patient during the perioperative period? Tight glycemic control Maintaining a normal temperature Administration of high-dose steroids Avoiding any opioid analgesia None Time's up
