Table 1 PDCA project team confirmation of the main causes by group discussion
No. | Possible factor | Actual situation | Main cause confirmation |
|---|---|---|---|
1 | Not strictly following the operation process | Residents’ knowledge of the operation is uneven. | Yes |
2 | Unskilled operation | Unskilled operation leads to repeated puncture. | Yes |
3 | Vascular variation | Ultrasound confirmed vascular variation in some patients. | Yes |
4 | Difficulty in locating the puncture point on the body surface | Patients with obesity, a short neck, malnutrition or severe oedema are prone to undergoing repeat puncture due to difficulty in locating the proper puncture point. | Yes |
5 | Vascular collapse | Ultrasound-confirmed extreme vascular collapse is rare. | No |
6 | Poor cooperation of patients | Patients cooperate well after sedation and analgesia. | No |
7 | Poor quality of puncture instruments | The first-attempt success rate of skilled operators is high with the same model of puncture instrument. | No |
8 | Insufficient light in the ward | Insufficient light in the ward is rare. | No |
9 | Emergency catheterization | Emergency catheterization will always be conducted by skilled supervisory physicians. | No |