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HOME > Clin Endosc > Volume 55(1); 2022 > Article
Review When to Discharge a Patient After Endoscopy: A Narrative Review
Swapnil Sahebrao Walkeorcid, Shamshersingh Chauhanorcid, Vikas Pandeyorcid, Rahul Jadhavorcid, Vipul Chaudhariorcid, Deepti Vishwanathanorcid, Kailash Kolheorcid, Meghraj Ingle,orcid
Clinical Endoscopy 2022;55(1):8-14.
DOI: https://doi.org/10.5946/ce.2021.110
Published online: January 27, 2022

Department of Gastroenterology, LTMMC & LTMGH, Sion, Mumbai, India

Correspondence: Meghraj Ingle Department of gastroenterology, LTMMC & LTMGH, Endoscopy room 13, College building, First Floor, Sion, Mumbai 400022, India Tel: +91-93209-79659, Fax: +91-022-240-63000, E-mail: drmeghraj@gmail.com
• Received: March 21, 2021   • Revised: May 8, 2021   • Accepted: June 8, 2021

Copyright © 2022 Korean Society of Gastrointestinal Endoscopy

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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  • Video endoscopy is an important modality for the diagnosis and treatment of various gastrointestinal diseases. Most endoscopic procedures are performed as outpatient basis, sometimes requiring sedation and deeper levels of anesthesia. Moreover, advances in endoscopic techniques have allowed invasion into the third space and the performance of technically difficult procedures that require the utmost precision. Hence, formulating strategies for the discharge of patients requiring endoscopy is clinically and legally challenging. In this review, we have discussed the various criteria and scores for the discharge of patients who have undergone endoscopic procedures with and without anesthesia.
  • Keywords: Advanced endoscopy; Anaesthesia; Safe discharge
Globally, video endoscopy is used to carry out many diagnostic and therapeutic procedures related to the gastrointestinal (GI) tract. Advanced endoscopic procedures, such as endoscopic retrograde cholangiopancreatography (ERCP), endoscopic ultrasound (EUS), third-space endoscopic procedures, and endoscopy performed for GI bleeding may require the help of an anesthesiologist for sedation, even at the time of endotracheal intubation.
The time of discharge after endoscopy will depend on the type of procedure and anesthesia administered, complications during and after the procedure, and any underlying clinical conditions of the patient. Some patients can undergo diagnostic and therapeutic endoscopies without sedation, but most patients and endoscopists prefer sedation or anesthesia for advanced endoscopic procedures [1]. Therefore, we tried to highlight the appropriate timing and criteria based on current evidence of discharge after endoscopic procedures with or without sedation.
Few scores have been defined in the literature that help in decision-making for safe patient discharge after the effects of anesthesia subside. The Aldrete scoring system (Table 1) and modified post-anesthesia discharge scoring system (PADSS, Table 2) help the treating physician determine when to discharge a patient post-procedure. 1 However, these have yet to be prospectively validated.
The Aldrete scoring system includes five parameters: oxygen saturation, blood pressure, respiration, consciousness, and activity. A score ≥ 9 may indicate discontinuation of monitoring, and the patient can be discharged [2].
The modified PADSS incorporates systolic blood pressure, postoperative nausea/vomiting, activity, pain, and surgical bleeding [2]. If the post-procedure score is > 9 or vital sign score is > 2 and other sub scores are > 1, the patient can be discharged after 6 hours [2]. Trevisani et al. studied this score in patients undergoing sedation with meperidine and midazolam during colonoscopy. Patients with a modified PADSS score > 9 could be discharged within 2 hours [3]. However, prospective studies are required to recommend the timing of starting oral feeds after discharge.
A recent paper by Sato et al. recently highlighted the safe use of propofol for diagnostic and therapeutic esophagogastroduodenoscopy and colonoscopy. The patient was discharged when there was full recovery of psychomotor functions and consciousness, which were evaluated using a pragmatic approach. Answering the questions asked by the recovery nurse and the ability to walk in a straight line for at least five meters, assessed 1 hour after the procedure by a recovery nurse, prompted immediate discharge from the endoscopy unit [4]. Aljebreen studied the average time to discharge after sedated and unsedated colonoscopies and showed that recovery was significantly faster in patients who were unsedated than in those who were sedated [5].
The American Society of Anesthesiologists defines moderate sedation (conscious sedation) as a drug-induced depression of consciousness during which patients respond purposefully to verbal commands, either alone or accompanied by light tactile stimulation, with interventions being required to maintain the patent’s airway, and spontaneous ventilation is adequate [6]. Using this definition, Lugay and colleagues showed that the mean recovery time after an endoscopic procedure was < 50 min [6].
Patients with nonvariceal upper GI bleeding can be stratified based on the complete Rockall score and Glasgow Blatchford score (GBS). Patients can be discharged early if the Rockall score ranges from 0 to 2 [7]. A study by Le Jeune et al. suggested that patients with GBS < 2 could be considered for early discharge [1], which was also validated in a study conducted by Rickard et al. [8].
The presence of endoscopic stigmata of recent bleeding also determines the risk of rebleeding and may predict the length of hospital stay for affected patients. High-risk stigmata include active arterial bleeding, a non-bleeding visible vessel, or an adherent clot. The patients in whom these occur need endoscopic haemostatic measures and intravenous infusions of proton pump inhibitors (PPIs) in the hospital for about three days [9].
Intermediate-risk stigmata include oozing from an ulcer and no other endoscopic stigmata, severe comorbidities, or shock on presentation. The patients in whom these occur should undergo endoscopic management followed by oral PPIs and observation in the hospital for 1–2 days after successful endoscopic treatment [9].
Low-risk stigmata include clean-based ulcers or flat spots on the ulcer base. These patients should be started on oral PPIs once a day, can resume a normal diet immediately, and be discharged from the emergency department or hospital when stable [10]. Patients with hemoglobin levels > 10 mg/dL, normal coagulation parameters, and good social support at home can be discharged immediately after the procedure.
For cirrhotic patients presenting with variceal bleeding, upper GI endoscopy should be performed as soon as possible after hemodynamic stability or within 12 hours of admission [11].
Once variceal bleeding is confirmed, vasoactive drugs need to be avoided for five days to avoid rebleeding. A shorter administration duration of vasoactive drugs (48–72 hours) can be considered in cases with less severe GI bleeding, but more data are needed [11,12]. In compensated cirrhotic patients undergoing variceal banding as primary or secondary prophylaxis for esophageal varices, endoscopic therapy can be administered on an outpatient basis without requiring admission. However, patients requiring endoscopic therapy for gastric varices by cyanoacrylate injection may require extended observation if any intraprocedural bleeding occurs. Patients can be discharged after successful endoscopic variceal bleeding control and vasoactive drug therapy if their hospital course remains uncomplicated [11,12,13].
Guidelines are available for monitoring and discharge post-esophageal dilatation. Patients were monitored for at least two hours before discharge. Patients should be provided with clear oral and written instructions on fluids, diet, and medications. Routine imaging and contrast studies post-procedure should be performed only in cases of post-procedure persistent chest pain, fever, tachycardia, or breathlessness [14].
There are no data regarding discharge after uncomplicated pneumatic dilatation for achalasia and balloon dilatation for enteric and colonic pathologies. Different hospitals follow their own discharge policies, ranging from a few hours to almost a day. At our institution, we generally observe the patient for about 4 hours post-dilatation for any evidence of severe or persistent chest pain, persistent tachycardia, or breathlessness. In patients who underwent pyloric, enteral, or colonic balloon dilatation, we observe these patients for approximately 2 hours post-procedure and discharged these patients if the procedure was uncomplicated.
Patients undergoing enteral stenting may be monitored for a few hours prior to discharge. One study from India followed a protocol to discharge the patients on postoperative day 3 after they tolerated oral feeds [15]. However, if stenting is performed for perforation, the patient may have an extended hospital stay. At our institution, if esophageal stenting is performed for palliation of dysphagia due to cancer or stent placement for a benign stricture, the patient is discharged after 4 hours of observation if the procedure is uneventful. Patients undergoing antral stenting for palliation of malignant gastric outlet obstruction can be discharged 1–2 days later, provided they have immediate access to medical facilities [16] Patients undergoing colonic stenting for malignant obstruction may be discharged after a median of six days post-procedure, as shown in a study by Ho et al. [17].
Aspiration, perforation, and GI bleeding are life-threatening complications associated with foreign body ingestion. Endoscopic management of most patients who ingested foreign bodies or had an impacted food bolus can be treated on an outpatient basis [18]. Patients with a technically demanding extraction; who ingested multiple objects or foreign bodies, which is associated with a high risk for complications (i.e., sharp-pointed objects, batteries, magnets, objects larger than 5–6 cm); or who have extensive mucosal injury due to foreign body ingestion or endoscopic treatment require admission and observation [18]. However, the length of stay is not defined. We suggest admission and observation of the patient for 24 hours post-procedure and discharge if no complication occurs.
Patients undergoing percutaneous endoscopic gastrostomy (PEG) have underlying medical or surgical comorbidities that require hospital admission before the PEG procedure. An important consideration after PEG insertion is the initiation of feeding. A meta-analysis by Bechtold et al. showed that early feeding (defined as < 4 hours) may be a safe alternative to delayed ( > 4 hours) or next-day feeding. Despite the significant increase in gastric residual volumes at day 1, no increase in overall complications was seen [19]. A study by Gumaste et al. on early ( < 3 days) vs. late discharge post-PEG showed that serum albumin level < 2.2 g/dL, age, and two or more comorbidities were independent predictors of late discharge from the hospital [18].
Endoscopic mucosal resection (EMR) and endoscopic submucosal dissection (ESD) may be associated with adverse events, such as perforation and bleeding. These complications are major reasons for extended hospital stays. For ESD, recent data show an average of 5–8 days of hospitalization [20]. Choi et al. analyzed EMR and ESD data and found that delayed complications were rarely observed when the patient was discharged within two days after the procedure [21]. Tomiki proposed and validated a post-colonic ESD 3-day discharge algorithm. 22 Patients with intraoperative perforation or bleeding fasted until day 2 and were later managed according to their symptoms. Other patients fasted only for day 1, and those with normal physical, imaging, and laboratory parameters (white blood cell count < 10,000/μL, C-reactive protein < 2 mg/L) were discharged on day 3 [22].
Among the few proposed benefits of peroral endoscopic myotomy (POEM) over surgery is the reduced length of hospital stay.
Pioneer work by Inoue et al., which included 500 patients, described the average duration of hospital stay after POEM to be 4–5 days [23]. In a prospective study by Cloutier, the discharge criteria for POEM included the ability to tolerate oral fluids and good pain control on regular acetaminophen intake. In this study, 72 (79.1%) patients who underwent POEM were discharged on the same day [24].
ERCP can be performed on an outpatient basis. Complications such as post-ERCP pancreatitis (PEP), bleeding, perfo- ration, and cholangitis may extend the duration of stay after ERCP. Many studies have been conducted on early discharge after ERCP and factors predicting complications of ERCP, such as PEP. Jeurnink proposed a predictor model for PEP and cholangitis [25]. This score includes pre-cut sphincterotomy, age < 60 years, primary sclerosing cholangitis, female sex, history of pancreatitis, pancreas divisum, and difficult cannulation (1 point for each parameter). Patients with a score < 3 can be discharged after 6 hours of observation, and those with a score > 4 may need admission and observation. Lee et al. studied 4 hour amylase and lipase levels after ERCP for predicting PEP [26]. An amylase level < 1.5 × upper limits of normal (ULN) was useful for PEP exclusion (sensitivity of 93.8%), and > 4 × ULN was more specific (93.2%) and useful to guide preventive therapy. Lipase levels > 2 × ULN and > 8 × ULN had high sensitivity and specificity, respectively.
A 4-hour post-ERCP amylase level > 4 × ULN, lipase level > 8 × ULN, pre-cut sphincterotomy, and pancreatic sphincterotomy were significant predictors for PEP. Therefore, patients with an amylase level < 1.5 × ULN and a lipase level < 4 × ULN may be considered for safe early discharge [26]. Freeman determined certain risk factors that would warrant longer hospital stays post-ERCP. Suspected sphincter of Oddi dysfunction, cirrhosis, difficult bile duct cannulation, and combined endoscopic and percutaneous procedures are risk factors for post-ERCP complications, and the presence of any one of these factors merits observation for 6 hours to prevent readmission [27]. Therefore, same-day discharge is safe even after uneventful ERCP, regardless of whether stenting is performed for choledocholithiasis or biliary malignancy [28].
Studies comparing EUS and surgical approaches for pseudocyst drainage show similar efficacy, but the EUS approach may reduce the duration of hospital stays and costs of the procedure, and improve quality of life [29-31]. Various studies noted hospital stays ranging from 2 to 4 days post-procedure, which is less than that for surgical drainage (6–10 days). Mok et al. established the safety of therapeutic endoscopy (ERCP and endoscopic ultrasound-guided fine needle aspiration [EUS-FNA]) in an ambulatory surgery center as the incidence of adverse events was equivalent to that among inpatients [32]. In this prospective study, which includes > 270 patients who had undergone procedures such as ERCP and EUS-FNA, more than half of the patients were very sick at the time of endoscopy (American Society of Anesthesiologists grade III and above). However, the overall ERCP- and EUS-FNA-related adverse events, including pancreatitis and hemorrhage, were not different between inpatients and patients undergoing ambulatory endoscopies.
Well-documented verbal and written instructions outlining diet, activity, medication, and follow-up evaluation should be given to each patient after every procedure, preferably in their native language. A concerned contact person and 24-hour helpline should be provided to all patients in case of a complication related to the endoscopic procedure. On discharge, a responsible individual should accompany the patients home.
Many endoscopic procedures do not have well-defined discharge criteria. Therefore, the decision to discharge needs to be considered on a case-by-case basis. In Table 3, the authors suggest various GI procedures with their need for admission and possible length of stay based on current evidence; however, there are no definite guidelines. Thus, prospective studies evaluating this simple yet important topic would help further illuminate this common problem.
Table 1.
Aldrete Scoring System
Categories Score
Respiration
 Able to take deep breath & cough 2
 Dyspnea and shallow breathing 1
 Apnea 0
Oxygen saturation
 SaO2 >95% on room air 2
 Dyspnea and shallow breathing 1
 Apnea 0
Consciousness
 Fully awake 2
 Arousable on call 1
 Not responding 0
Circulation
 Blood pressure +/- 20 mmHg baseline 2
 Blood pressure +/- 20–50 mmHg baseline 1
 Blood pressure +/- 50 mmHg baseline 0
Activity
 Able to move 4 extremities 2
 Able to move 2 extremities 1
 Able to move 0 extremities 0

Monitoring may be discontinued and patient discharged to home or appropriate unit when Aldrete score more than 9 or return to baseline Aldrete score.

Table 2.
Modified Post Anaesthesia Discharge Scoring System
Categories Score
Vital signs (blood pressure, pulse, heart rate)
 ±40% of pre-endoscopy value 0
 ±20–40% of pre-endoscopy value 1
 ±20% of pre-endoscopy value 2
Activity
 Unable to ambulate 0
 Requires assistance 1
 Steady gait, no dizziness or meets pre-endoscopy level 2
Nausea and vomiting
 Severe/continues despite treatment 0
 Moderate/treated with parenteral medication 1
 No or minimal/treated with p.o. medication 2
Pain
 Severe (numerical analogue scale=7–10) 0
 Moderate (numerical analogue scale=4–6) 1
 Minimal or no pain (numerical analogue scale=0–3) 2
Surgical bleeding
 Severe (≥2 episodes of hematemesis or rectal bleeding) 0
 Moderate (1 episode of hematemesis or rectal bleeding) 1
 None or minimal (not requiring intervention) 2

Patients’ scoring ≥9 for two consecutive measurements are considered fit for discharge home.

p.o, per os.

Table 3.
Proposed Discharge Criteria for Various Endoscopic Procedures
Procedure Criteria for discharge Discharge
If anesthesia given Modified Aldrete score [2] >9 Same day (6-hour observation)
PADSS [3] >9
Post non-variceal upper GI bleeding Glasgow Blatchford score [1,9,10]
<2 Same day discharge
>2 Admission and stabilization
Esophageal dilatation-uncomplicated At least 2-hour observation [14] Same day in uncomplicated cases
Foreign body removal Uncomplicated [18] Immediately post removal
Complicated [17] Observation for at least 24 hours
POEM-uncomplicated Observation for 1 day [20] Observation for 1 day
EMR and ESD-uncomplicated 2 days [22] 2 days
ERCP-prognostic model score for pancreatitis and cholangitis 0–3 [26] Same day discharge after six hours
>4 [26] Keep for observation for 24 hours
EUS uncomplicated pancreatic fluid drainage 2–3 days [29,30] 2–3 days
ERCP-biliary malignancy Same day discharge [28] Same day discharge

EMR, endoscopic mucosal resection; ERCP, endoscopic retrograde cholangiopancreatography; ESD, endoscopic submucosal dissection; EUS, endoscopic ultrasound; GI, gastrointestinal; POEM, peroral endoscopic myotomy

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      When to Discharge a Patient After Endoscopy: A Narrative Review
      Clin Endosc. 2022;55(1):8-14.   Published online January 27, 2022
      DOI: https://doi.org/10.5946/ce.2021.110
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    When to Discharge a Patient After Endoscopy: A Narrative Review
    When to Discharge a Patient After Endoscopy: A Narrative Review
    Categories Score
    Respiration
     Able to take deep breath & cough 2
     Dyspnea and shallow breathing 1
     Apnea 0
    Oxygen saturation
     SaO2 >95% on room air 2
     Dyspnea and shallow breathing 1
     Apnea 0
    Consciousness
     Fully awake 2
     Arousable on call 1
     Not responding 0
    Circulation
     Blood pressure +/- 20 mmHg baseline 2
     Blood pressure +/- 20–50 mmHg baseline 1
     Blood pressure +/- 50 mmHg baseline 0
    Activity
     Able to move 4 extremities 2
     Able to move 2 extremities 1
     Able to move 0 extremities 0
    Categories Score
    Vital signs (blood pressure, pulse, heart rate)
     ±40% of pre-endoscopy value 0
     ±20–40% of pre-endoscopy value 1
     ±20% of pre-endoscopy value 2
    Activity
     Unable to ambulate 0
     Requires assistance 1
     Steady gait, no dizziness or meets pre-endoscopy level 2
    Nausea and vomiting
     Severe/continues despite treatment 0
     Moderate/treated with parenteral medication 1
     No or minimal/treated with p.o. medication 2
    Pain
     Severe (numerical analogue scale=7–10) 0
     Moderate (numerical analogue scale=4–6) 1
     Minimal or no pain (numerical analogue scale=0–3) 2
    Surgical bleeding
     Severe (≥2 episodes of hematemesis or rectal bleeding) 0
     Moderate (1 episode of hematemesis or rectal bleeding) 1
     None or minimal (not requiring intervention) 2
    Procedure Criteria for discharge Discharge
    If anesthesia given Modified Aldrete score [2] >9 Same day (6-hour observation)
    PADSS [3] >9
    Post non-variceal upper GI bleeding Glasgow Blatchford score [1,9,10]
    <2 Same day discharge
    >2 Admission and stabilization
    Esophageal dilatation-uncomplicated At least 2-hour observation [14] Same day in uncomplicated cases
    Foreign body removal Uncomplicated [18] Immediately post removal
    Complicated [17] Observation for at least 24 hours
    POEM-uncomplicated Observation for 1 day [20] Observation for 1 day
    EMR and ESD-uncomplicated 2 days [22] 2 days
    ERCP-prognostic model score for pancreatitis and cholangitis 0–3 [26] Same day discharge after six hours
    >4 [26] Keep for observation for 24 hours
    EUS uncomplicated pancreatic fluid drainage 2–3 days [29,30] 2–3 days
    ERCP-biliary malignancy Same day discharge [28] Same day discharge
    Table 1. Aldrete Scoring System

    Monitoring may be discontinued and patient discharged to home or appropriate unit when Aldrete score more than 9 or return to baseline Aldrete score.

    Table 2. Modified Post Anaesthesia Discharge Scoring System

    Patients’ scoring ≥9 for two consecutive measurements are considered fit for discharge home.

    p.o, per os.

    Table 3. Proposed Discharge Criteria for Various Endoscopic Procedures

    EMR, endoscopic mucosal resection; ERCP, endoscopic retrograde cholangiopancreatography; ESD, endoscopic submucosal dissection; EUS, endoscopic ultrasound; GI, gastrointestinal; POEM, peroral endoscopic myotomy

    Table 1.

    Table 2.

    Table 3.

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