Table 4.
IHBD | EHBD | ||
---|---|---|---|
Scope position | Straight | Push (long) | Pull (short) |
Schema | |||
Puncture site | Stomach | D1 | D2 |
Scope stability | Stable | Stable | Unstable |
Needle maneuverability | Easy | Difficult | Normal |
Diameter of bile duct | Small | Large | Large |
Needle direction | Ampulla | Hepatic hilar | Ampulla |
Distance to papilla | Long | Short | Very short |
IHBD intra hepatic bile duct, EHBD extra hepatic bile duct, D1 duodenal bulbs, D2 2nd portion of the duodenum