FCA1-0583
Which of the following statements most accurately describes a drug’s efficacy or intrinsic activity?
Archives: FRCA Part 1
FCA1-0584
The following are the pharmacodynamic properties of a neuromuscular blocking agent: Effective dose 95 (ED95) – 0.3 mg/kg, Time to 95% depression of first twitch of train of four (ToF) – 75 seconds, Time to 25% recovery of first twitch of train of four (ToF) – 33 minutes. Which of the following statements about this neuromuscular blocking agent is the most accurate?
FCA1-0585
An intravenous drug infusion is started at a rate of 20 ml/hour. The drug concentration in the syringe is 5 mg/mL. The drug’s plasma clearance is 20 L/hour. Which of the following values, assuming that the infusion rate remains constant, best approximates the drug’s plasma concentration at steady state?
FCA1-0586
You’ve been summoned to help resuscitate a 6-year-old child who has suffered a cardiac arrest. The ECG monitor shows electrical activity that isn’t pulsed. Which of the following statements is the most appropriate during resuscitation?
FCA1-0577
You are given an intravenous induction agent. The following are its characteristics: A racemic mixture of cyclohexanone rings with one chiral centre, Local anaesthetic properties. Which of the following statements about its primary mechanism of action is most accurate?
FCA1-0578
Infrared radiation is absorbed by asymmetric, polyatomic polar molecules like carbon dioxide (CO2). When measuring CO2 in gas samples, mainstream capnography uses this physical principle. Which of the following gases is most likely to interfere with carbon dioxide’s absorption spectrum?
FCA1-0579
Obeying Boyle’s law and Charles’s law is a characteristic feature of an ideal gas. The gas which is most ideal out of the following options is?
FCA1-0580
A bolus of alfentanil has a faster onset of action than an equal dose of fentanyl. Which of the following statements most accurately describes the difference?
FCA1-0573
A drug with a 2-hour half-life and a first-order kinetics of elimination is administered intravenously. The initial plasma concentration is calculated to be 12 mcg/mL and plasma concentrations is measured hourly. At 6 hours, how much drug will be left?
FCA1-0574
Desflurane has which of the following characteristics when compared with halothane?