Z型注射到底是啥-肌肉注射

Z-Track Technique

The Z-track method of IM injection is used when a

drug is highly irritating to SC tissues or has the ability

to permanently stain the skin. The nurse should adhere

to the following procedure when using the Z-track tech-

nique (Fig. 2-8):

• Draw the drug up into the syringe.

• Discard the needle and place a new needle on the

syringe. This prevents any solution that may

remain in the needle (that was used to draw the

drug into the syringe) from contacting tissues as

the needle is put into the muscle.

• Pull the plunger down to draw approximately 0.1

to 0.2 mL of air into the syringe. The air bubble

in the syringe follows the drug into the tissues

and seals off the area where the drug was

injected, thereby preventing oozing of the drug

up through the extremely small pathway created

by the needle.

• Place the patient in the correct position for admin-

istration of an IM injection.

• Cleanse the skin.

• Pull the skin, SC tissues, and fat (that are over the

injection site) laterally, displacing the tissue to the

side.

• While holding the tissues in the lateral position,

insert the needle and inject the drug.

当药物对皮下组织有高度刺激性或可能永久性污染皮肤时，需采用肌内注射的 Z - 轨道法。使用 Z - 轨道技术时，护士应遵循以下步骤（图 2 - 8）：

1. 将药物抽入注射器。
2. 弃去原来的针头，在注射器上换一个新针头。这样可防止（用于将药物抽入注射器的）针头中可能残留的任何溶液在针头插入肌肉时接触组织。
3. 向下拉注射器活塞，吸入约 0.1 - 0.2 毫升空气。注射器中的气泡会跟随药物进入组织，并封闭药物注射的区域，从而防止药物通过针头造成的极细通道渗出。
4. 让患者采取适合肌内注射的正确体位。
5. 清洁皮肤。
6. 将注射部位上方的皮肤、皮下组织和脂肪向一侧牵拉，使组织移位。
7. 在保持组织处于侧拉位置的同时，插入针头并注射药物。