Study on Main Drugs and Drug Combinations of Patient-Controlled Analgesia Based on Text Mining

Table 1

39 high-frequency drugs related to PCA.

Rank	Drug name	Frequency
1	Morphine	759
2	Dexmedetomidine	398
3	Fentanyl	360
4	Remifentanil	333
5	Ropivacaine	162
6	Sufentanil	129
7	Oxycodone	121
8	Ketamine	107
9	Bupivacaine	105
10	Tramadol	99
11	Propofol	78
12	Hydromorphone	73
13	Levobupivacaine	70
14	Meperidine	57
15	Paracetamol	47
16	Parecoxib	46
17	Ketorolac	46
18	Droperidol	36
19	Clonidine	36
20	Alfentanil	33
21	Ondansetron	29
22	Acetaminophen	28
23	Neostigmine	27
24	Nefopam	27
25	Midazolam	25
26	Dexamethasone	21
27	Lidocaine	19
28	Dezocine	19
29	Piritramide	19
30	Ramosetron	19
31	Butorfanol	18
32	Tropisetron	15
33	Pregabalin	14
34	Methadone	14
35	Gabapentin	14
36	Lornoxicam	11
37	Dipyrone	9
38	Ritonavir	8
39	Celecoxib	7