Dilation
Eso Stents
WallFlex Enteral
Disease States and Anatomy
100

Dilators exert one of these two forces 

What is shearing Axial force and Radial force?

100

3 Types of Boston Scientific Esophageal Stents

What are:

Ultraflex

WallFlex 

Agile

100

Boston Scientific's Enteral Stent Portfolio Offering

What are:

WallFlex Colonic

WallFlex Duodenal

WallFlex Soft Colonic

WallFlex Soft Duodenal 

(Extra Credit: Wallstent and Ultraflex)

100

3 symptoms of malignant and benign esophageal strictures 

What are: 

  • Dysphagia
  • Unintended weight loss
  • Regurgitation of foods/liquids
  • Frequent burping or hiccups
  • Heartburn
  • Chest pain
  • Shortness of breath
200

Types of dilations

What is fixed diameter (rigid) and radial expanding?

200

SEMS is an acronym for this 

Self Expanding Metal Stent

200

3 Features / Benefits of WallFlex Enteral Soft

What Are:

1. Looped ends on both proximal and distal ends (may reduce trauma)

2. Lower radial and axial force: Might conform better to difficult anatomy; increased flexibility 

3.  Thinner wire braid (.009 vs .012): allows for smaller diameter delivery system (pediatric scope)

200

This is the most widely used cancer staging system

What is TNM

T - refers to the size and extent of the man tumor.  This is usually the primary tumor.

N - refers to the number of nearby lymph nodes that have cancer.

M - refers to whether the cancer has metastasized.

300

In a single session, no more than three dilators of sequentially larger size should be passed once moderate or greater resistance is evident

What is the "Rule of Three"?

300

2 deployment options for UltraFlex

What are proximal and distal release delivery systems?

300

2 reasons an enteral stent might be placed 

What is

  • Creation of access for additional procedures

  • Reduction in pressure inside the intestinal tract from an intestinal obstruction 

  • Growth of GI tumors, which affect the lumen of the GI tract as they grow



300

When a benign esophageal stricture reoccurs even after multiple treatments, which is defined as 3 or more dilations within a 12-month period

What is refractory benign 

400

The two inflation devices compatible with the CRE portfolio

What are Alliance™ II Integrated Inflation/Lithotripsy Device and CRE SteriFlate™ Disposable Inflation Device?

400

5 RO markers found on the Agile stent delivery system 

What are: 

1 & 2. Constrained ends of stent 

3. 50% of stent (deployment midpoint)

4. Point of no return ~75% of stent has been deployed

5. Traveling Marker - leading end of the outside tube that shows how far the stent has been deployed



400

Two stages of the Hartmann's procedure 

What is:

  • Resecting the diseased colonic segment and creating an end colostomy and a rectal stump (performed open or laparoscopically)

  • Reversal of the colostomy (typically performed laparoscopically weeks or more after the first stage, if at all)

400

Stage and treatment for cancer that is in the deeper layers of the lining in the esophagus, or has spread to nearby lymph nodes (has not spread to other areas of the body)

What is stage II, stent / chemo-radiation / surgery?

500

The inflated outer diameters, balloon length, and working length of Fixed Wire CRE Balloon

What is:

Outer Diameter (mm): 6-8, 8-10, 10-12, 12-15, 15-18, 18-20

Balloon Length (cm): 8cm

Working Length (cm): 180cm

500

WallFlex Esophageal stent body diameters 

What are 18 and 23 mm?

500

Steps to deploy a colonic stent 

  1. Identify and measure the stricture.  
  2. Select the stent. 
  3. Mark the stricture 
  4. Blow up the balloon and pull back until resistance is met. 
  5. Pass the stent to the stricture, traverse the stricture, and deploy the stent. Remove the stent system and guidewire. 
500

Most common location of blockage in the large intestine

What is the Sigmoid Colon? 

- Sigmoid 38%

- Decending Colon 16%

- Splenic Flexure 14% 


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