Which statement correctly pairs normal heart rate ranges for adult anesthetized dogs and cats?

Which statement correctly pairs normal heart rate ranges for adult anesthetized dogs and cats?

• A. Dogs 60-100 bpm; Cats 100-140 bpm
• B. Dogs 80-120 bpm; Cats 120-170 bpm
• C. Dogs 100-140 bpm; Cats 140-190 bpm
• D. Dogs 70-110 bpm; Cats 110-160 bpm

Answer: (B)

Under anesthesia, heart rate ranges are influenced by the depth of anesthesia and differ by species, so the expected ranges for dogs and cats are not the same as when they are awake. In typical adult anesthetized animals, dogs commonly run about 80–120 bpm, while cats tend to be a bit faster, around 120–170 bpm. This combination aligns with how cats often maintain higher heart rates under anesthesia than dogs do, reflecting species-specific responses to anesthetic agents and autonomic tone. So the pairing of 80–120 bpm for dogs and 120–170 bpm for cats best matches the common clinical ranges you’ll see in anesthesia practice. The other options either set ranges that are too low or too high for one or both species under anesthesia, making them less consistent with standard reference values.

Under anesthesia, heart rate ranges are influenced by the depth of anesthesia and differ by species, so the expected ranges for dogs and cats are not the same as when they are awake. In typical adult anesthetized animals, dogs commonly run about 80–120 bpm, while cats tend to be a bit faster, around 120–170 bpm. This combination aligns with how cats often maintain higher heart rates under anesthesia than dogs do, reflecting species-specific responses to anesthetic agents and autonomic tone. So the pairing of 80–120 bpm for dogs and 120–170 bpm for cats best matches the common clinical ranges you’ll see in anesthesia practice. The other options either set ranges that are too low or too high for one or both species under anesthesia, making them less consistent with standard reference values.