Table 6: Clinical and treatment outcome.
| Parameters | PA (n=22) | PCD (n=20) | P value (NS: Not significant N/A: Not applicable) |
|---|---|---|---|
| 1. Length of hospital stay (days) | *0.001; †NS | ||
| – Mean ± SD | 32.8 ± 22.1 | 26.2 ± 19.3 | |
| – Median | 28.5 | 23.5 | |
| 2. Duration of catheter drain in-situ (days) | |||
| – Mean ± SD | N/A | 14.4 ± 17.6 | N/A |
| – Median | N/A | 6 | N/A |
| 3. No. of procedure related complications | 0 | 5 | ‡0.02 |
| 4. No. of patients requiring subsequent surgery | 1 | 2 | ‡NS |
| 5. No. of patient death | 5 | 5 | ‡NS |
| 6. No. of patients with successful treatment (Figure 3) | 19 | 12 | ‡NS |
| – needle aspiration | 9 / 10 | N/A | |
| – catheter | 10 / 12 | N/A | |
| 7. Unsuccessful Cases | |||
| Procedure | |||
| First | Second | Third | Reason for initial treatment failure |
| PA | PCD | – | Abscess remains unchanged |
| PA | PCD | PCD | Abscess remains unchanged, PCD re-inserted due to catheter dislodgement |
| PA | Surgery | – | Emergency cholecystectomy and surgical evacuation of the re-accumulated pus |
| PCD | PA | – | Catheter dislodgements (n=2) |
| PCD | PA | – | No clinical or radiological improvement (n=3) |
| PCD | Surgery | – | Non-resolving complex abscess |
| PCD | Surgery | – | Surgical resection of a liver mass, radiologically seen to be an abscess initially |
| PCD | – | – | Inpatient death secondary to severe sepsis |
* Shapiro-Wilk normality test
† Kruskal-Wallis rank sum test
‡ Fisher’s Exact Test