A multicenter survey on endoscopic retrograde cholangiopancreatography during the COVID-19 pandemic in northern and central Italy

Abstract

Background and study aims  COVID-19 has dramatically impacted endoscopy practice because upper endoscopy procedures can be aerosol-generating. Most elective procedures have been rescheduled. Endoscopic retrograde cholangiopancreatography (ERCP) is frequently performed in emergency or urgent settings in which rescheduling is not possible. We evaluated the impact of the COVID-19 pandemic on ERCP in Italy during the SARS-CoV-2 lockdown, in areas with high incidence of COVID-19.

Patients and methods  We performed a retrospective survey of centers performing ERCP in high COVID-19 prevalence areas in Italy to collect information regarding clinical data from patients undergoing ERCP, staff, case-volume and organization of endoscopy units from March 8, 2020 to April 30, 2020.

Results  We collected data from 31 centers and 804 patients. All centers adopted a triage and/or screening protocol for SARS-CoV-2 and performed follow-up of patients 2 weeks after the procedure. ERCP case-volume was reduced by 44.1 % compared to the respective 2019 timeframe. Of the 804 patients undergoing ERCP, 22 (2.7 %) were positive for COVID-19. Adverse events occurred at a similar rate to previously published data. Of the patients, endoscopists, and nurses, 1.6 %, 11.7 %, and 4.9 %, respectively, tested positive for SARS-CoV-2 at follow up. Only 38.7 % of centers had access to a negative-pressure room for ERCP.

Conclusion  The case-volume reduction for ERCP during lockdown was lower than for other gastrointestinal endoscopy procedures. No definitive conclusions can be drawn about the percentage of SARS-CoV-2-positive patients and healthcare workers observed after ERCP. Appropriate triage and screening of patients and adherence to society recommendations are paramount.

Introduction

In December 2019, a novel coronavirus, subsequently termed SARS-CoV-2, was detected in Wuhan, China, causing a severe respiratory disease named Coronavirus Disease (COVID-19). As a result of its ability to mainly spread through respiratory droplets, including those from asymptomatic individuals, SARS-CoV-2 spread significantly worldwide, and on March 11, 2020, the World Health Organization (WHO) declared the infection a pandemic. Italy was the first European country to be severely involved with a high number of cases. Drastic measures had to be adopted to contain the spread of the virus, which was causing an overload of the national healthcare system. Crowd assemblage and events first were banned, then on March 8, the Italian government imposed a quarantine in the Northern regions with the highest incidence of COVID-19, rapidly followed by the extension of the lockdown to the whole country. A reduction in containment measures and a gradual resumption of activities, the so-called “phase two,” were allowed beginning on May 4. By April 30, COVID-19 had infected more than 3 million people and caused 224,000 deaths worldwide, with more than 205,000 infected people and 28,000 deaths in Italy. At the time of the writing of this paper, those numbers had risen to more than 47 million people infected and 1.2 million deaths worldwide, with more than 750,000 infected people and 39,000 deaths in Italy ¹ .

The most common symptoms of COVID-19 include fever, cough, myalgia/fatigue, and dyspnea ² , but spread can occur during the incubation period (5 days on average, range 0–14) and 80 % of individuals are asymptomatic ³ . The case fatality rate was 5 % in a Chinese meta-analysis ² . Healthcare workers are up to three times more likely to contract COVID-19 than the general population and there were more than 20,000 such infections in Italy by April 30 ¹ . These data clearly confirm that patients undergoing endoscopy might be asymptomatic carriers and preventive measures have to be taken into account to avoid human-to-human spread of the virus.

Recently, in addition to standard precautions, several strategies have been suggested to reduce the risk of SARS-CoV-2 transmission to patients and to endoscopy staff during gastrointestinal endoscopy ( Box 1 ) ^{4 5 6 7} .

All endoscopic procedures should be considered aerosol-generating, owing to the possibility of coughing and retching during upper endoscopy, as well as the introduction of micro-droplets through the instrument channels or leakage of valves ⁵ . After the COVID-19 outbreak, competent authorities imposed a drastic reduction in non-urgent activities performed in Italian hospitals to limit the spread of SARS-CoV-2 and to re-allocate healthcare professionals to other tasks. Elective and follow-up endoscopic procedures in Italy, therefore, were suspended, causing a > 60 % reduction in total endoscopy activity, with peaks of > 90 % reduction ⁸ . Endoscopic retrograde cholangiopancreatography (ERCP) is a challenging, predominantly therapeutic endoscopic-radiologic procedure, which is effective in relieving obstructive jaundice and also managing some iatrogenic surgical biliary complications. Despite the COVID-19 pandemic, ERCP is still requested for patients with ongoing biliary obstruction or infection, as rescheduling is often impossible in time-sensitive settings.

Patients and methods

The present study was a multicenter, retrospective, observational survey of Northern and Central Italy centers performing ERCP in high COVID-19 incidence and prevalence areas. Participating centers were contacted via email and invited to answer an electronic survey questionnaire ( Supplementary material ).

The participating centers were asked about their ERCP case-volume from March 8, 2020 to April 30, 2020 and in the same period during 2019 as a reference. Questions included organization (number of endoscopists, nurses and trainees, triage/screening measures, sedation practice, reprocessing), facility (personal protective equipment [PPE], availability of a negative pressure endoscopic/radiological room) and clinical aspects (indications for ERCP, prevalence of COVID-19 patients, follow-up data).

Our aim was to evaluate the impact of the COVID-19 pandemic on ERCP procedure management in Italy.

Results

Center characteristics

From March 8 to April 30, 2020, 31 centers, all located in Northern and Central Italy, participated in this retrospective observational survey. The survey centers were located as follows: 25 (80.6 %) in the North and six (19.4 %) in the Center of Italy. The majority of centers were non-academic (28/31). Only two of 31 centers had a case-volume < 100 ERCPs/year, while 21 of 31 centers performed > 250 ERCPs in 2019 (range 250–1109).

A negative pressure endoscopy room was available in five of 31 centers (16.1 %). Nine of 31 centers (26.0 %) performed ERCPs on SARS-CoV-2-positive patients in a separate room outside of the endoscopy department, seven of which had negative pressure.

Population

Data were retrospectively collected from a total of 804 patients (420 males, 384 females); 564 of 804 had an intact papilla. Of the 804 patients, 598 (74.4 %) were older than 60 years. Only 22 of 804 procedures (2.7 %) were performed in SARS-CoV-2-positive patients. The number of procedures performed by the participating centers in the same period in 2019 was 1439.

The most frequent indication for ERCP was malignant biliary obstruction from distal tumors (213/804, 26.5 %), followed by common bile duct (CBD) stones (190/804, 23.6 %) and cholangitis (152/804, 18.9 %). See Table 1 for all indications.

Table 1. Indications for ERCP.

	Total (n = 804)
Indication for ERCP	n (%)
Stenting for distal tumors	213 (26.5)
CBD stones	190 (23.6)
Cholangitis	152 (18.9)
Biliary stent replacement	62 (7.7)
Acute pancreatitis	54 (6.7)
Perihilar cholangiocarcinoma	28 (3.5)
Iatrogenic biliary leak/stricture	23 (2.9)
Ampullary neoplasia	22 (2.7)
Papillary stenosis of unknown origin	13 (1.6)
Biliary stenosis in chronic pancreatitis	9 (1.1)
Post-OLT biliary stenosis	7 (0.9)
Recurrent pancreatitis in pancreas divisum	6 (0.7)
Pancreatic stent replacement	5 (0.6)
Main pancreatic duct stenosis or stone	5 (0.6)
Hemobilia/papillary bleeding	3 (0.4)
Other (Mirizzi’s syndrome, main pancreatic duct disruption, Recurrent pancreatitis, PSC, extrinsic neoplastic compression of CBD, peripapillary GIST)	12 (1.5)

ERCP – endoscopic retrograde cholangiopancreatography; CBD – common bile duct; OLT – orthotopic liver transplantation; PSC – primary sclerosing cholangitis; GIST – gastrointestinal stromal tumor.

Medical/nurse staffing

There were 69 experienced endoscopists performing ERCP (range 1–4 per center); there were 34 trainees (range 0–2 per center). Training in ERCP was suspended in six of the 27 centers with an ongoing training program. Trainees continued their usual ERCP training in 11 of 27 centers, while it was reduced in 10 of 27 centers. The main reasons for discontinuation or reduction in ERCP training were reassignment of trainees to COVID wards and limitations in availability of PPE. There were 183 ERCP nurses (range 2–16 per center). During the lockdown period, staff members in all centers were also involved in other endoscopic or clinical activities, sometimes including COVID ward support.

Triage/screening

All centers implemented a specific questionnaire triage (travel to high-risk areas or contact with COVID-19 patients; presence of COVID-19 symptoms) and/or carried out a screening protocol prior to ERCP to check and stratify the risk of COVID-19 in patients. A nasopharyngeal swab was used as a screening test in all centers except one (30/31, 96.8 %). Twenty-five of 30 centers (83.3 %) performed a swab on all patients, while five of 30 (16.7 %) carried out the screening only in the presence of symptoms or after a positive triage questionnaire. Twenty-three of 30 centers (76.7 %) performed further screening with a chest computed tomography scan for positive swab and/or symptomatic patients with a negative swab using variable local protocol policies.

Personal protective equipment (PPE)

FFP2/3 respirators were used by the endoscopy staff on all patients in 30 of 31 centers (96.8 %); one of 31 reserved their use for SARS-CoV-2-positive patients only. Operators wore water-resistant gowns for all procedures in 87.1 % of centers and only for SARS-CoV-2-positive procedures in the remaining 12.9 %. A face shield was used in all except one center (96.8 %). A surgical hair cap was used in 93.5 % of centers. Operators wore two pairs of gloves in 87.1 % of centers.

Sedation practice

Deep sedation was the most common sedation modality (13/31, 41.9 %). Five of 31 centers (16.1 %) shifted their sedation practice to general anesthesia for COVID-19 patients.

Reprocessing

The pandemic triggered an optimization of adherence to endoscope reprocessing protocols in seven of 31 centers (22.6 %).

Follow-up data

All centers performed a phone call follow-up of patients 2 weeks after each procedure to record adverse events (AEs) or COVID-19 symptom development. At the 2-week follow-up time-point, 13 previously SARS-CoV-2-negative patients tested positive (13/804, 1.6 %), of whom five were asymptomatic.

As regards the endoscopy staff, the cumulative incidence of SARS-CoV-2 during the lockdown timeframe was 11.7 % among endoscopists (12/103, of whom 1 was a trainee) and 4.9 % among nurses (9/183). Two of 12 SARS-CoV-2-positive endoscopists and three of 10 SARS-CoV-2 positive nurses were performing COVID wards shifts.

ERCP adverse events

Twenty-three of 804 patients (2.9 %) developed post-ERCP acute pancreatitis (PEP) and bleeding occurred in 16 of 804 (2.0 %); however, none of these AEs was severe. An infectious AE (cholangitis/cholecystitis) occurred in 14 of 804 patients (1.7 %), of which four were severe. All four reported cases of perforation (0.5 %) required surgical management. Three of 804 (0.4 %) died as a consequence of COVID-19; there were no ERCP-related deaths.

Discussion

ERCP often is performed for acute biliary obstruction in emergent settings such as acute cholangitis or urgent, time-sensitive settings such as acute biliary pancreatitis, obstructive jaundice in malignant stenosis, symptomatic CBD gallstones or biliary leaks after surgery. Rescheduling of ERCP is not possible in these scenarios. Moreover, ERCP is more time-consuming than other gastrointestinal endoscopy procedures and it is often scheduled in tandem with endoscopic ultrasound (EUS), another time-consuming procedure. Last but not least, ERCP patients might require hospitalization. In the event of a SARS-CoV-2-positive patient, all these factors add up to a potential increase in exposure for both the patients and healthcare workers linked to ERCP.

The endoscopy centers participating in our survey showed a medium to high annual case-volume for ERCP. There was a significant reduction (44.1 %) in the number of procedures from March 8 to April 30 2020 compared to the same period in 2019. This might be explained by a rescheduling of some of the elective indications for ERCP (stent replacement, treatment of recurrent pancreatitis, etc.) but there also might have been a reduction in medical attendance by patients with abdominal symptoms, as a consequence of fear of contracting the virus in hospitals. The reduction in ERCPs, however, was less than for other endoscopy procedures, which even reached 90 % in some areas ⁸ .

Although triage/screening was not standardized and there was some variability among centers, each center, at a minimum, implemented a screening protocol prior to ERCP to provide patient risk stratification to prevent the spread of SARS-CoV-2 and use proper measures when scheduling the procedure. All centers also performed follow-up phone calls, which are a very useful tool, albeit imperfect, for keeping track of patient symptoms and AEs. A small percentage of centers also optimized adherence to endoscope reprocessing protocols, which is a key element in containing biological risks. Endoscope transmission of any kind of virus is reasonably rare if we thoroughly follow current guidelines in reprocessing. PPE use was generally adherent to society and expert recommendations. Although performing endoscopy procedures in a negative-pressure room was recommended by gastroenterology societies guidelines both before ⁹ and after ⁵ the pandemic outbreak, only 38.7 % of centers had access to negative-pressure rooms for SARS-CoV-2-positive patients. There is an urgent need to update facilities to this standard protection against airborne pathogens.

No definitive conclusions can be drawn about the observed relatively high percentage of healthcare workers who tested positive for SARS-CoV-2 during the 2-week follow up, because tracking movements and contacts of patient and endoscopy staff was not implemented and the endoscopy room is just one place where the ERCP patient and staff spent time. Moreover, some operators were also involved in COVID wards shifts and they all came from areas with a high prevalence of COVID-19. On the contrary, the small percentage of patients who tested positive at follow-up despite coming from the same high prevalence areas and being susceptible to the same observations made for operators, might be a clue that triage/screening procedures and PPE use are adequate prevention tools.

As this survey showed, the ERCP volume load was not reduced as much as other endoscopic activities, because of the aforementioned pivotal role of ERCP in some emergent and urgent settings. We, therefore, believe that ERCP personnel should be “protected” by healthcare authorities and should not be exposed to any increased risk of infection during a pandemic, if we take into account the paucity of ERCP operators in a country. We recognize that establishing an official priority among healthcare personnel is a tough task, as it should be based on evidence, shared by the majority or imposed, and it might be unpopular to some. However, local healthcare authorities might identify life-saving procedures performed in each center and involved healthcare operators to consider and have remain in place when workers are reallocated to pandemic-focused activities.

The rate of AEs was comparable to previously published data. PEP occurred at a very low rate (2.9 %) and no cases were severe, which met the European Society of Gastrointestinal Endoscopy (ESGE) performance measure target of < 10 % ¹⁰ . The bleeding rate (2.0 %) was a little higher than the ASGE post-procedural indicator of < 1 % ¹¹ , but comparable to all of the most recent reports (up to 3.6 %) ^{12 13} , and there were no severe cases. The rate of perforation was 0.5 %, again higher than the ASGE indicator of < 0.2 % but comparable to the 0.6 % rate in an Austrian survey ¹² . No ERCP-related deaths were reported.

This survey study had some limitations. The first was the retrospective design. The second was the limited number of centers/cases: only a very small percentage of patients (2.7 %) were SARS-CoV-2-positive. Third, because of the short follow-up period and the lack of a standardized reassessment of SARS-CoV-2 status, data on the virus spread might have been underestimated; however, thorough epidemiological tracking of cases is very hard to implement, especially when the prevalence of the virus is high in the population, as in our reality.

Conclusions

In conclusion, to the best of our knowledge, this was the first multicenter survey in Europe to collect organizational, clinical, and outcome data on ERCP in the COVID-19 era in high prevalence areas. The impact of COVID-19 on gastrointestinal endoscopy procedure volumes was significant but not extreme for ERCP. This procedure can be life-saving in emergent settings and it cannot be rescheduled for most of the other time-sensitive indications. For these same reasons, healthcare authorities should take the importance of ERCP operators into account when reallocating staff resources during pandemics. In an effort to reduce the spread of SARS-CoV-2 before, during, and after endoscopy procedures, accurate triage, screening, and actuation of society recommendations are our only weapons, at present. Strict adherence to these measures may also prevent the spread of SARS-CoV-2 during the subsequent period of resumption of normal activities.

Box 1.

Main recommendations for endoscopy in the COVID-19 era ⁵

• Following general measures of physical distancing and adequate hand hygiene

• Postponing elective, non-urgent procedures

• Reducing endoscopy room staff to limit virus spread and conserve PPE and other resources

• Clear communication across the entire endoscopy team and training on endoscopy unit COVID protocols

• N95/FFP2/FFP3 respirators and a full set of PPE (gown, gloves, hair cover and goggles or face-shield) for the endoscopy staff

• Respect for the correct sequence of wearing and taking off PPE (“donning” and “doffing”)

• Stratifying patients (triage/screening) before the procedure

• Surgical masking for all patients in endoscopy

• Following reprocessing protocols for endoscopes strictly

• Contacting patients 1 to 2 weeks after the procedure to check for symptoms