Wuhan Davis first Medical Technology Co., Ltd.


ROUTINE CARETake Examination as Shifting of Duty and Ward Round


1. Observe pressure value at negative pressure device

Negative pressure value: -125mmHg~-450mmHg(-0.017MPa~-0.06MPa)

Do negative pressure header, drainage bottle and external interface of VSD materials connect closely, and is protective cap of casing closed (to prevent air leakage)

2. Observe drainage volume in drainage bottle

Please observe color, property and volume of drain, and make records. If there are lots of fresh blood, please contact physicians for further treatment.

3. Observe drainage tube

(1) Observe whether there is condition of folding or pulling at drainage tube

(2) Observe whether there is movement of drain in drainage tube

(3) Observe whether there is plugging in drainage tube or T-joint (cross joint)

If there are much secretions or blood clots in drainage tube, the T-joint (cross joint) will be blocked, and you can take pipeline-dredge technology. If it is necessary, please take continuous rinse to prevent plugging. 

4. Observe the maintaining of negative pressure

Notes: (1) Whether pressure device is normal; (2) Whether drainage tube is smooth or drain in tube moves; (3) Does VSD dressing collapse, or tubular protrude; (4) Is VSD dressing dry, harden or has liquid effusion under thin film


Common sites with air leakage:

1. Drainage tube and film at external fixation site

2. Interface at T-joint (cross joint), casing cap

3. Site with exudates at the margin and skin fold

4. “Blank without paste”between films induced by disorderly pasting

5. Interface among drainage tubes

Note: For wound surface at limbs and various large wounds or those with more secretions, it is suggested to rinse continuously and slowly, in order to prevent tube plugging.