lacrimal duct irrigation

Lacrimal passage irrigation is a method of lacrimal examination. Check if the lacrimal passage passes and if there is any secretion. Clean the lacrimal duct before surgery or verify that the lacrimal passage is unobstructed after surgery. Basic Information Specialist Category: Ophthalmic Examination Category: Other Inspections Applicable gender: whether men and women apply fasting: not fasting Tips: The patient takes a sitting position or a lying position. Normal value Insert the needle vertically into the punctum, about 1.5 to 2.0 mm deep, then turn 90. The tip of the needle is oriented toward the nose, ie the long uranium of the needle is parallel to the rim. The tip of the needle moves slowly along the lacrimal canal, and can advance 5~6mm without resistance. Push the liquid into the tube and apply even force and appropriate force. If the resistance is large during flushing, there is a countercurrent or outflow from the other lacrimal tube, indicating that the lacrimal passage is blocked. The direction in which the different parts of the lacrimal duct block the flow of the liquid is different. Pay attention to the depth when entering the needle to avoid damage to the mucosa. Clinical significance Abnormal result 1, the lacrimal duct obstruction caused by trauma. 2, chronic dacryocystitis flush with purulent secretions. 3, other acute inflammation of the eye. 4, there is bleeding tendency or with nasal deformity. 5, acute dacryocystitis. People in need of examination: check whether the lacrimal duct is unobstructed, determine the obstruction site and expand the narrow lacrimal duct. Precautions Taboo before inspection: Pay attention to the movements to be light and avoid rough operation. Requirements for examination: The patient takes a sitting position or a lying position. Inspection process 1. After the punctum is dilated, switch to the lacrimal passage to rinse the needle, place it on the syringe containing the irrigation solution, and insert the lacrimal irrigation needle into the punctum according to the same method of lacrimal duct expansion. 2. After entering about 10mm, you can slowly inject the rinse into the lacrimal duct. If the lacrimal passage is smooth, the flushing fluid will flow out from the nostrils or the pharynx, otherwise it will not work. Not suitable for the crowd There is no scope for this, and it is unnecessary to check if the eyes are fine. Adverse reactions and risks May cause redness and inflammation of the eyes.

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