Low-Cost Simulation for Benign Anorectal Disease Management: A Pilot Curriculum

Imagine you are training to be a chef. You've spent years learning how to chop vegetables and boil pasta in a classroom, but you've never actually touched a real knife or seen a real steak. Then, one day, you're told, "Okay, you're ready to cook for customers." That's a bit like the situation many new general surgery residents face with benign anorectal diseases (common, non-cancerous issues like hemorrhoids, abscesses, and fistulas).

Even though these conditions are very common, many residents graduate without ever having performed the necessary procedures on a real patient. They are expected to handle them, but they lack the "kitchen time" to feel confident.

This paper describes a pilot cooking class (a simulation curriculum) designed to fix that problem. Here is the breakdown of what they did and what they found, using simple analogies:

The Problem: The "Missing Practice" Gap

Think of surgery residency as a long apprenticeship. While residents are required to do a certain number of these specific procedures to graduate, the reality is that senior doctors or specialists often do the work themselves, leaving the junior residents (the "apprentices") just watching from the sidelines. By the time the junior residents are supposed to do these procedures alone in the emergency room, they feel like they've never held the tools.

The Solution: A "Low-Cost" Practice Kitchen

The researchers at Washington University built a simulation lab. Instead of using expensive, high-tech robots or real patients, they built "training dummies" out of cheap, everyday items found in a hardware store or kitchen.

They set up three "stations," like different cooking tasks:

1. The Hemorrhoid Station (The "Band-Aid" & "Cut" Station):

   • The Model: They used a toilet paper roll as the body, layers of foam as skin, and Play-Doh (modeling clay) inside to represent the swollen tissue.
   • The Task: Residents practiced two things: cutting the tissue out (hemorrhoidectomy) and putting a rubber band around it to shrink it (banding).
   • The Cost: It cost less than $3 to make one of these models.

2. The Fistula Station (The "Plumbing" Station):

   • The Model: They used a blue pool noodle (the foam ring kind) wrapped in medical tape. They poked holes in it to simulate "tunnels" (fistulas) that form under the skin.
   • The Task: Residents had to thread a tiny probe through these tricky tunnels and loop a string (a seton) through it, which is a common way to treat these infections over time.
   • The Cost: About $7.75 per model.

3. The Abscess Station (The "Drain the Bubble" Station):

   • The Model: They filled a latex balloon with a mix of oatmeal and fiber (to feel like pus) and hid it inside polyester stuffing (to feel like fat and muscle). They covered it with a plastic tablecloth to mimic skin.
   • The Task: Residents practiced making a small cut, draining the "pus," and inserting a mushroom-shaped catheter to keep it open and draining.
   • The Cost: About $7.62 (mostly for the plastic pelvic model it was attached to).

The Experiment

They invited two groups of residents:

• The "Newbies" (PGY-1): Just starting their first year of consults.
• The "Veterans" (PGY-3): About to become senior leaders.

They spent 1.5 hours rotating through these stations, guided by expert teachers. Before the class, they filled out a survey asking, "How confident do you feel doing this?" After the class, they filled out the same survey again.

The Results: Confidence Boosted

Here is what happened:

• The "Newbies" were nervous: Before the class, they had very little experience. For example, on a scale of 1 to 5, their confidence in putting a rubber band on a hemorrhoid was a shaky 1.5.
• The "Veterans" had more experience: They had done more of these procedures, but even they had gaps (especially with rubber banding).
• The Magic of Practice: After just 1.5 hours of playing with the foam and Play-Doh models, everyone's confidence went up significantly.
  • The "Newbies" jumped from a 1.5 to a 2.7 in confidence for rubber banding.
  • They felt much better about cutting, draining, and probing.
  • Even though they didn't become "masters" (you can't master surgery in 90 minutes), they went from "I have no idea what to do" to "I know the steps and I'm not terrified."

What the Residents Said

• The Good: They loved that the models were "good enough." Even though the Play-Doh didn't feel exactly like real skin, it was enough to practice the movements and the sequence of steps. They appreciated having a teacher there to guide them, since in real life, they often don't get to see the whole process.
• The Bad: They felt rushed. They wanted more time. They said, "We learned a lot, but we wish we had 3 hours instead of 1.5."
• The Missing Piece: They noticed the class didn't have a specific model for looking inside the anus (anoscopy), so they didn't practice that part as much, even though they still felt a bit more confident about it afterward.

The Bottom Line

The paper concludes that you don't need a million-dollar lab to teach surgery. You can use toilet paper rolls, pool noodles, and oatmeal to build a "practice kitchen" that helps residents feel less scared and more ready to learn.

It didn't turn them into experts overnight, but it bridged the gap between "never having done this" and "being ready to try." It proved that a cheap, simple simulation can be a powerful tool to help future surgeons get comfortable with procedures they might otherwise never see until they are on their own.