Table 1

Patient characteristics and clinical details

LAMS (n = 31)Plastic (n = 29)P values
Age (years)
 Mean (SD)55.8 (15.6)60.3 (13.0)0.277
 Median5962
 IQR2515
 Range22–8332–78
Gender: n (%)
 Female11 (35.5)13 (44.8)0.460
 Male20 (64.5)16 (55.2)
Ethnicity: n (%)
 Black3 (9.7)1 (3.4)0.750
 Hispanic2 (6.5)3 (10.3)
 White26 (83.9)25 (86.2)
Aetiology of acute pancreatitis: n (%)
 Alcohol9 (29.0)5 (17.2)0.453
 Gallstones6 (19.4)10 (34.5)
 Idiopathic12 (38.7)12 (41.4)
 Other*4 (12.9)2 (6.9)
Serum white cell count (x109  cells/L)
 Mean (SD)11.2 (7.0)11.3 (6.5)0.840
 Median9.98.2
 IQR6.18.2
 Range2.9–33.04.3–31.3
Serum albumin (g/dL)
 Mean (SD)3.1 (0.7)3.1 (0.6)0.813
 Median3.13.0
 IQR0.80.8
 Range1.8–4.42.1–4.5
SIRS preprocedure: n (%)9 (29.0)13 (44.8)0.205
Organ failure preprocedure: n (%)2 (6.5)4 (13.8)0.417
Clinical presentation: n (%)
 Infection†27 (87.1)26 (89.7)0.999
 Pain4 (12.9)3 (10.3)
ASA classification: n (%)
 II13 (41.9)12 (41.4)0.918
 III17 (54.8)15 (51.7)
 IV1 (3.2)2 (6.9)
ICU or high-acuity unit care: n (%)10 (32.3)10 (34.5)0.855
Route of nutrition at index intervention: n (%)
 Oral24 (77.4)20 (69.0)0.596
 Enteral5 (16.1)7 (24.1)
 TPN1 (3.2)2 (6.9)
 None1 (3.2)0
  • *Other aetiology of acute pancreatitis: in LAMS group—pancreatic cancer in one, pancreas divisum in one, post-ERCP pancreatitis in one, trauma in one patient. In plastic group—post-EUS-FNA in one, trauma in one patient.

  • †Infected WON defined as positive culture of aspirated contents or gas within WON seen on CT.

  • ASA, American Society of Anesthesiologist; ERCP, endoscopic retrograde cholangiopancreatography; EUS,  endoscopic ultrasound; FNA, fine- needle aspiration; ICU, intensive care unit; LAMS, lumen-apposing metal stent; SIRS, systemic inflammatory response syndrome; TPN, total parenteral nutrition.