Final answer:
Midazolam is a short-acting benzodiazepine commonly used in the cath lab for sedation.
Step-by-step explanation:
The short acting benzodiazepine commonly used in the cath lab for sedation is midazolam.
Midazolam is a short-acting benzodiazepine that is commonly used as a sedative in medical procedures, including in the cath lab. It has a rapid onset of action and a short half-life, making it suitable for short-term sedation.
Other benzodiazepines like diazepam (Valium) and lorazepam (Ativan) are also used for sedation in medical procedures, but midazolam is specifically favored in the cath lab due to its shorter duration of action.