In this study, the patient was admitted because of repeated epigastric pain. According to the diagnostic criteria30, the patient was diagnosed with SAP. After the patient was treated with this protocol, there was a noted therapeutic effect31.
Patient A, a female, 84 years old, was diagnosed for the first time on May 2, 2019. The patient complained of repeated epigastric distension and pain. The clinical tests showed that the serum amylase was 509 U/L (Reference values: 35-135 U/L), and that the urine amylase was 1,343 U/L (Reference values: 0-600 U/L). Physical examination showed that the abdomen was swollen, the total abdominal pressure was increased, and epigastric tenderness, rebound pain, and muscle tension were obvious.
After conventional Western medicine treatment (electrocardiogram monitoring, oxygen saturation monitoring, suction care, gastric tube preservation, continuous nasal cannula oxygen, fluid resuscitation, pancreatic suppression of secretion, parenteral nutrition support, electrolyte correction, and pain relief) and TCM enema treatment (using the liquid extract of raw rhubarb every 2 h), the patient noted that her upper abdomen pain was partially relieved on May 4, 2019. Clinical tests showed that the serum amylase dropped to 216 U/L, and that the urine amylase dropped to 526 U/L, adhering to the above therapy. On May 5, 2019, the above treatments were continued, and the patient noted that her upper abdomen pain was significantly relieved. Clinical tests showed that the serum amylase dropped further to 95 U/L, and that the urine amylase dropped to 81 U/L. On May 8, 2019, the TCM enema frequency changed to every 6 h. On May 15, 2019, the patient's symptoms and laboratory indicators improved significantly, and the patient was discharged.
Details on three patients are shown in Table 1. The clinical efficacy of control vs treatment patients is shown in Table 2.

Figure 1: Raw rhubarb in Chinese medicine. (A) The outer packaging of medicine at the hospital. (B) Sliced rhubarb. Please click here to view a larger version of this figure.

Figure 2: Experimental items. (A) Disposable enema device. (B) Thermometer. (C) Disposable medical kit. (D) Medical nursing pad. (E) Medical gauze pad. (F) Disposable gloves. (G) Care turning pillows. (H) Disposable treatment sheet. (I) Paraffin oil. (J) Raw rhubarb. (K) Automatic decoction and packaging machine. (L) Non-woven filter package. Please click here to view a larger version of this figure.

Figure 3: Schematic representation of the TCM enema therapy in SAP patients. The enema is performed by injecting raw rhubarb liquid into the patient's anus through a disposable enema device. After passing through the rectum, the liquid enters the large intestine at 30-35 cm, and plays a role in the treatment of SAP in the sigmoid colon. The figure was partly generated using Servier Medical Art, provided by Servier, licensed under a Creative Commons Attribution 3.0 unported license (HTTPS:// creativecommons.org/licenses/by/3.0/). Please click here to view a larger version of this figure.
| Patients | Age | Gender | Abdominal pain | Serum amylase (U/L) | Time of enema therapy | Frequency of enema |
| A | 84 | Female | √√√√ | 509 | Pre-therapy | Q2H |
| √√√ | 216 | Mid-therapy | Q6H |
| √ | 95 | Post-therapy | Q12H |
| B | 40 | Male | √√√√√ | >1500 | Pre-therapy | Q2H |
| √√√ | 337 | Mid-therapy | Q6H |
| √√ | 142 | Post-therapy | Q12H |
| C | 29 | Male | √√√√ | 758 | Pre-therapy | Q2H |
| √ | 37 | Post-therapy | Q12H |
Table 1: Representative results of enema therapy for the treatment of SAP patients. Reference values for abdominal pain: √-√√√√√. Reference values for serum amylase: 35-135 U/L. The frequency of enema: Q2H = every 2 h. Q6H = every 6 h. Q12H = every 12 h.
| Item | Control group (n = 31) | Experiment group (n = 31) |
| Heal | 2 (6.45) | 6 (19.35) |
| Effect | 9 (29.03) | 17 (54.85) |
| Effective | 12 (38.71) | 6 (19.35) |
| Invalid | 8 (25.81) | 2 (6.45) |
| Total effective | 23 (74.19) # | 29 (93.55) |
Table 2: Clinical efficacy of two groups in the hospital mentioned in the reference32. Control group: conventional therapy. Treatment group: conventional therapy + TCM enema. Compared with the experiment group, # p < 0.05.