COVID-19-associated abdominal pain: Difference between revisions

Jump to navigation Jump to search
No edit summary
Line 31: Line 31:
*[[COVID-19-associated diarrhea]]
*[[COVID-19-associated diarrhea]]
*[[COVID-19-associated hepatic injury]]
*[[COVID-19-associated hepatic injury]]
*[[COVID-19]] associated p[[pancreatitis]]<ref name="pmid32444169">{{cite journal |vauthors=Aloysius MM, Thatti A, Gupta A, Sharma N, Bansal P, Goyal H |title=COVID-19 presenting as acute pancreatitis |journal=Pancreatology |volume= |issue= |pages= |date=May 2020 |pmid=32444169 |pmc=7207100 |doi=10.1016/j.pan.2020.05.003 |url=}}</ref><ref name="pmid32387082">{{cite journal |vauthors=Hadi A, Werge M, Kristiansen KT, Pedersen UG, Karstensen JG, Novovic S, Gluud LL |title=Coronavirus Disease-19 (COVID-19) associated with severe acute pancreatitis: Case report on three family members |journal=Pancreatology |volume=20 |issue=4 |pages=665–667 |date=June 2020 |pmid=32387082 |pmc=7199002 |doi=10.1016/j.pan.2020.04.021 |url=}}</ref>
*[[COVID-19]] associated [[acute abdomen]] (acute [[peritonitis]] and [[gastrointestinal perforation|gut perforation]])<ref name="pmid32301807">{{cite journal |vauthors=Gao Y, Xi H, Chen L |title=Emergency Surgery in Suspected COVID-19 Patients With Acute Abdomen: Case Series and Perspectives |journal=Ann. Surg. |volume=272 |issue=1 |pages=e38–e39 |date=July 2020 |pmid=32301807 |pmc=7188052 |doi=10.1097/SLA.0000000000003961 |url=}}</ref>
*[[Anxiety]] associated with the infection itself
*[[COVID-19]] associated [[pancreatitis]]<ref name="pmid32444169">{{cite journal |vauthors=Aloysius MM, Thatti A, Gupta A, Sharma N, Bansal P, Goyal H |title=COVID-19 presenting as acute pancreatitis |journal=Pancreatology |volume= |issue= |pages= |date=May 2020 |pmid=32444169 |pmc=7207100 |doi=10.1016/j.pan.2020.05.003 |url=}}</ref><ref name="pmid32387082">{{cite journal |vauthors=Hadi A, Werge M, Kristiansen KT, Pedersen UG, Karstensen JG, Novovic S, Gluud LL |title=Coronavirus Disease-19 (COVID-19) associated with severe acute pancreatitis: Case report on three family members |journal=Pancreatology |volume=20 |issue=4 |pages=665–667 |date=June 2020 |pmid=32387082 |pmc=7199002 |doi=10.1016/j.pan.2020.04.021 |url=}}</ref>
*[[Anxiety]] associated with [[patient]] condition


==Differentiating abdominal pain due to [[COVID-19]] from other Diseases==
==Differentiating abdominal pain due to [[COVID-19]] from other Diseases==
Line 38: Line 39:
*''[[Ulcerative colitis]]'': A [[relapse]] can have [[symptoms]] similar to [[COVID-19]] such as: [[anorexia]],[[diarrhea]], [[rash]]. A history of [[ulcerative colitis]] is important it is equally important to access for possible [[COVID-19]] infection. Patient should be counselled about the similarities in two diseases.
*''[[Ulcerative colitis]]'': A [[relapse]] can have [[symptoms]] similar to [[COVID-19]] such as: [[anorexia]],[[diarrhea]], [[rash]]. A history of [[ulcerative colitis]] is important it is equally important to access for possible [[COVID-19]] infection. Patient should be counselled about the similarities in two diseases.
*''[[Hepatitis]]'': [[Acute]] [[hepatitis]] especially [[autoimmune hepatitis]] shared common symptoms such as [[fatigue]], [[anorexia]], [[nausea]], [[vomiting]], [[diarrhea]], skin [[rash]]. Some hepatic infections may involve [[pleuritis]] and [[pleural effusion]] thus [[chest pain]].<ref name="pmid22905065">{{cite journal |vauthors=Ponnurangam Nagarajan V, Palaniyadi A, Sathyamoorthi M, Sasitharan R, Shuba S, Padur Sivaraman R, Scott JX |title=Pleural effusion - An unusual cause |journal=Australas Med J |volume=5 |issue=7 |pages=369–72 |date=2012 |pmid=22905065 |pmc=3413004 |doi=10.4066/AMJ.2012.1024 |url=}}</ref>
*''[[Hepatitis]]'': [[Acute]] [[hepatitis]] especially [[autoimmune hepatitis]] shared common symptoms such as [[fatigue]], [[anorexia]], [[nausea]], [[vomiting]], [[diarrhea]], skin [[rash]]. Some hepatic infections may involve [[pleuritis]] and [[pleural effusion]] thus [[chest pain]].<ref name="pmid22905065">{{cite journal |vauthors=Ponnurangam Nagarajan V, Palaniyadi A, Sathyamoorthi M, Sasitharan R, Shuba S, Padur Sivaraman R, Scott JX |title=Pleural effusion - An unusual cause |journal=Australas Med J |volume=5 |issue=7 |pages=369–72 |date=2012 |pmid=22905065 |pmc=3413004 |doi=10.4066/AMJ.2012.1024 |url=}}</ref>
*''Infectious [[diarrhea]]'':
*''Infectious [[diarrhea]]'': Abdominal pain associated with bloody [[diarrhea]] are features of infections such as [[clostridium difficile|C.difficile]], [[shigellosis]] and [[diverticulitis]]. A careful history, physical exam and stool [[RT-PCR]] for [[COVID-19|coronavirus]] can help in diagnosis.
   
   
==Epidemiology and Demographics==
==Epidemiology and Demographics==
Line 52: Line 53:


== Natural History, Complications and Prognosis==
== Natural History, Complications and Prognosis==
**The appearance of [[abdominal pain]] has no fixed pattern of appearance in the [[COVID-19]] clinical course.
*The appearance of [[abdominal pain]] has no fixed pattern of appearance in the [[COVID-19]] clinical course.  
*The majority of patients with abdominal pain
* A complication reported is [[gastrointestinal perforation|gut perforation]] due to [[ischemia]].<ref name="Corrêa NetoViana2020">{{cite journal|last1=Corrêa Neto|first1=Isaac José Felippe|last2=Viana|first2=Kaline Fortes|last3=Silva|first3=Milena Braga Soares da|last4=Silva|first4=Leandro Mariano da|last5=Oliveira|first5=Gustavo de|last6=Cecchini|first6=Angelo Rossi da Silva|last7=Rolim|first7=Alexander Sá|last8=Robles|first8=Laercio|title=Perforated acute abdomen in a patient with COVID-19: an atypical manifestation of the disease|journal=Journal of Coloproctology|year=2020|issn=22379363|doi=10.1016/j.jcol.2020.05.011}}</ref>
*If left untreated,
*Common complications
*''Prognosis'': In a meta-analysis by Mao R. et al. the odds ratio for severe disease in patients with [[anorexia]] as one of the [[gastrointestinal]] symptoms were 7.10.<ref name="MaoQiu2020">{{cite journal|last1=Mao|first1=Ren|last2=Qiu|first2=Yun|last3=He|first3=Jin-Shen|last4=Tan|first4=Jin-Yu|last5=Li|first5=Xue-Hua|last6=Liang|first6=Jie|last7=Shen|first7=Jun|last8=Zhu|first8=Liang-Ru|last9=Chen|first9=Yan|last10=Iacucci|first10=Marietta|last11=Ng|first11=Siew C|last12=Ghosh|first12=Subrata|last13=Chen|first13=Min-Hu|title=Manifestations and prognosis of gastrointestinal and liver involvement in patients with COVID-19: a systematic review and meta-analysis|journal=The Lancet Gastroenterology & Hepatology|volume=5|issue=7|year=2020|pages=667–678|issn=24681253|doi=10.1016/S2468-1253(20)30126-6}}</ref>
*''Prognosis'': In a meta-analysis by Mao R. et al. the odds ratio for severe disease in patients with [[anorexia]] as one of the [[gastrointestinal]] symptoms were 7.10.<ref name="MaoQiu2020">{{cite journal|last1=Mao|first1=Ren|last2=Qiu|first2=Yun|last3=He|first3=Jin-Shen|last4=Tan|first4=Jin-Yu|last5=Li|first5=Xue-Hua|last6=Liang|first6=Jie|last7=Shen|first7=Jun|last8=Zhu|first8=Liang-Ru|last9=Chen|first9=Yan|last10=Iacucci|first10=Marietta|last11=Ng|first11=Siew C|last12=Ghosh|first12=Subrata|last13=Chen|first13=Min-Hu|title=Manifestations and prognosis of gastrointestinal and liver involvement in patients with COVID-19: a systematic review and meta-analysis|journal=The Lancet Gastroenterology & Hepatology|volume=5|issue=7|year=2020|pages=667–678|issn=24681253|doi=10.1016/S2468-1253(20)30126-6}}</ref>


Line 74: Line 73:
=== Laboratory Findings ===
=== Laboratory Findings ===
*Infectious [[virions]] in the [[gastrointestinal|GI]] or [[respiratory tract]] can be detected via [[Reverse transcription polymerase chain reaction|reverse transcriptase polymerase chain reaction]] (rRT-PCR).
*Infectious [[virions]] in the [[gastrointestinal|GI]] or [[respiratory tract]] can be detected via [[Reverse transcription polymerase chain reaction|reverse transcriptase polymerase chain reaction]] (rRT-PCR).
*There are no specific laboratory findings associated with abdominal pain in [[COVID-19]] patients. [[liver function tests|Biochemical markers of liver injury]] such as [[bilirubin]], [[C-reactive protein|CRP]], [[alanine aminotransferase|ALT]], [[aspartate aminotransferase|AST]] and [[gamma glutamyltransferase|Gamma GT]] may be increased in blood tests.<ref name="pmid32309266">{{cite journal |vauthors=Poggiali E, Ramos PM, Bastoni D, Vercelli A, Magnacavallo A |title=Abdominal Pain: A Real Challenge in Novel COVID-19 Infection |journal=Eur J Case Rep Intern Med |volume=7 |issue=4 |pages=001632 |date=2020 |pmid=32309266 |pmc=7162568 |doi=10.12890/2020_001632 |url=}}</ref>
*There are no specific laboratory findings associated with abdominal pain in [[COVID-19]] patients. [[liver function tests|Biochemical markers of liver injury]] such as [[bilirubin]], [[C-reactive protein|CRP]], [[alanine aminotransferase|ALT]], [[aspartate aminotransferase|AST]] and [[Gamma-glutamyltransferase|Gamma GT]] may be increased in blood tests.<ref name="pmid32309266">{{cite journal |vauthors=Poggiali E, Ramos PM, Bastoni D, Vercelli A, Magnacavallo A |title=Abdominal Pain: A Real Challenge in Novel COVID-19 Infection |journal=Eur J Case Rep Intern Med |volume=7 |issue=4 |pages=001632 |date=2020 |pmid=32309266 |pmc=7162568 |doi=10.12890/2020_001632 |url=}}</ref>
*[[Serum potassium]] levels are normal in patients but an important test to exclude life-threatening conditions in patients presenting with abdominal pain.
*[[Serum potassium]] levels are normal in patients but an important test to exclude life-threatening conditions in patients presenting with abdominal pain.
*[[Complete blood count]] provides information about the infectious status of the patient via increased [[white blood cells|WBCs]], or [[lymphocytes]] indicating viral infection.
*[[Complete blood count]] provides information about the infectious status of the patient via [[leukicytosis]] such as in [[upper gastrointestinal bleeding|upper GI bleed]] and [[peritonitis]], or [[lymphocytes]] indicating viral infection.
*Value of [[CRP]] and [[procalcitonin]] provide information on the inflammation and superimposed bacterial source of infection.<ref name="pmid32309266">{{cite journal |vauthors=Poggiali E, Ramos PM, Bastoni D, Vercelli A, Magnacavallo A |title=Abdominal Pain: A Real Challenge in Novel COVID-19 Infection |journal=Eur J Case Rep Intern Med |volume=7 |issue=4 |pages=001632 |date=2020 |pmid=32309266 |pmc=7162568 |doi=10.12890/2020_001632 |url=}}</ref>
*Value of [[CRP]] and [[procalcitonin]] provide information on the inflammation and superimposed bacterial source of infection.<ref name="pmid32309266">{{cite journal |vauthors=Poggiali E, Ramos PM, Bastoni D, Vercelli A, Magnacavallo A |title=Abdominal Pain: A Real Challenge in Novel COVID-19 Infection |journal=Eur J Case Rep Intern Med |volume=7 |issue=4 |pages=001632 |date=2020 |pmid=32309266 |pmc=7162568 |doi=10.12890/2020_001632 |url=}}</ref>
*[[D-Dimer]] levels give information on active bleeding in the body such as [[acute abdomen]] and upper [[gastrointestinal bleeding|upper GI bleed]])
*[[Rena function tests]] are deranged in a [[dehydrated]] person (increased [[urea]]) and [[patient]] with upper [[gastrointestinal bleed|Upper GI bleed]] or gut perforation as a complication of [[COVID-19]] (increased [[BUN]] and [[creatinine]].<ref name="Corrêa NetoViana2020">{{cite journal|last1=Corrêa Neto|first1=Isaac José Felippe|last2=Viana|first2=Kaline Fortes|last3=Silva|first3=Milena Braga Soares da|last4=Silva|first4=Leandro Mariano da|last5=Oliveira|first5=Gustavo de|last6=Cecchini|first6=Angelo Rossi da Silva|last7=Rolim|first7=Alexander Sá|last8=Robles|first8=Laercio|title=Perforated acute abdomen in a patient with COVID-19: an atypical manifestation of the disease|journal=Journal of Coloproctology|year=2020|issn=22379363|doi=10.1016/j.jcol.2020.05.011}}</ref>


===X-ray===
===X-ray===
Line 87: Line 88:


===CT scan===
===CT scan===
[[CT scan]] abdomen: CT scan maybe normal or confirm the peri-intestinal inflammatory reaction.<ref name="pmid32309266">{{cite journal |vauthors=Poggiali E, Ramos PM, Bastoni D, Vercelli A, Magnacavallo A |title=Abdominal Pain: A Real Challenge in Novel COVID-19 Infection |journal=Eur J Case Rep Intern Med |volume=7 |issue=4 |pages=001632 |date=2020 |pmid=32309266 |pmc=7162568 |doi=10.12890/2020_001632 |url=}}</ref>
*[[CT scan]] abdomen: CT scan maybe normal or confirm the peri-intestinal inflammatory reaction in a patient with [[pancreatitis]] associated with [[COVID]].<ref name="pmid32309266">{{cite journal |vauthors=Poggiali E, Ramos PM, Bastoni D, Vercelli A, Magnacavallo A |title=Abdominal Pain: A Real Challenge in Novel COVID-19 Infection |journal=Eur J Case Rep Intern Med |volume=7 |issue=4 |pages=001632 |date=2020 |pmid=32309266 |pmc=7162568 |doi=10.12890/2020_001632 |url=}}</ref>
*[[CT scan]] of [[abdomen]] reals extensive [[pneumoperitoneum]] and of chest shows [[pneumothorax]] in a patient with [[gastrointestinal perforation|gut perforation]] associated with [[COVID-19]].<ref name="Corrêa NetoViana2020">{{cite journal|last1=Corrêa Neto|first1=Isaac José Felippe|last2=Viana|first2=Kaline Fortes|last3=Silva|first3=Milena Braga Soares da|last4=Silva|first4=Leandro Mariano da|last5=Oliveira|first5=Gustavo de|last6=Cecchini|first6=Angelo Rossi da Silva|last7=Rolim|first7=Alexander Sá|last8=Robles|first8=Laercio|title=Perforated acute abdomen in a patient with COVID-19: an atypical manifestation of the disease|journal=Journal of Coloproctology|year=2020|issn=22379363|doi=10.1016/j.jcol.2020.05.011}}</ref>


===Other Imaging Findings===
===Other Imaging Findings===

Revision as of 17:07, 29 June 2020

Transfection of HeLa cells with the ACE2 receptor makes them susceptible to SARS-CoV-2 infection. hACE2, human ACE2;green, ACE2;red, viral protein (N);blue, DAPI (nuclei). Scale bars, 10 μm-By Peng Zhou et al - https://www.nature.com/articles/s41586-020-2012-7, CC BY 4.0, https://commons.wikimedia.org/w/index.php?curid=91229428.jpg

For COVID-19 frequently asked inpatient questions, click here
For COVID-19 frequently asked outpatient questions, click here

WikiDoc Resources for COVID-19-associated abdominal pain

Articles

Most recent articles on COVID-19-associated abdominal pain

Most cited articles on COVID-19-associated abdominal pain

Review articles on COVID-19-associated abdominal pain

Articles on COVID-19-associated abdominal pain in N Eng J Med, Lancet, BMJ

Media

Powerpoint slides on COVID-19-associated abdominal pain

Images of COVID-19-associated abdominal pain

Photos of COVID-19-associated abdominal pain

Podcasts & MP3s on COVID-19-associated abdominal pain

Videos on COVID-19-associated abdominal pain

Evidence Based Medicine

Cochrane Collaboration on COVID-19-associated abdominal pain

Bandolier on COVID-19-associated abdominal pain

TRIP on COVID-19-associated abdominal pain

Clinical Trials

Ongoing Trials on COVID-19-associated abdominal pain at Clinical Trials.gov

Trial results on COVID-19-associated abdominal pain

Clinical Trials on COVID-19-associated abdominal pain at Google

Guidelines / Policies / Govt

US National Guidelines Clearinghouse on COVID-19-associated abdominal pain

NICE Guidance on COVID-19-associated abdominal pain

NHS PRODIGY Guidance

FDA on COVID-19-associated abdominal pain

CDC on COVID-19-associated abdominal pain

Books

Books on COVID-19-associated abdominal pain

News

COVID-19-associated abdominal pain in the news

Be alerted to news on COVID-19-associated abdominal pain

News trends on COVID-19-associated abdominal pain

Commentary

Blogs on COVID-19-associated abdominal pain

Definitions

Definitions of COVID-19-associated abdominal pain

Patient Resources / Community

Patient resources on COVID-19-associated abdominal pain

Discussion groups on COVID-19-associated abdominal pain

Patient Handouts on COVID-19-associated abdominal pain

Directions to Hospitals Treating COVID-19-associated abdominal pain

Risk calculators and risk factors for COVID-19-associated abdominal pain

Healthcare Provider Resources

Symptoms of COVID-19-associated abdominal pain

Causes & Risk Factors for COVID-19-associated abdominal pain

Diagnostic studies for COVID-19-associated abdominal pain

Treatment of COVID-19-associated abdominal pain

Continuing Medical Education (CME)

CME Programs on COVID-19-associated abdominal pain

International

COVID-19-associated abdominal pain en Espanol

COVID-19-associated abdominal pain en Francais

Business

COVID-19-associated abdominal pain in the Marketplace

Patents on COVID-19-associated abdominal pain

Experimental / Informatics

List of terms related to COVID-19-associated abdominal pain

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Javaria Anwer M.D.[2]

Synonyms and keywords: COVID-19 associated abdominal pain, COVID associated abdominal pain, COVID likned abdominal pain, COVID-19 linked abdominal pain, coronavirus associated abdominal pain, coronavirus related belly pain, abdominal pain associated with COVID-19, abdominal pain associated with SARS CoV2, SARS CoV2 related abdominal pain, SARS CoV2 linked abdomin pain, abdominal pain and COVID-19, abdominal pain and SARS CoV2 ,abdominal pain in COVID, abdomin pain in COVID, abdominal pain in nCoV, abdominal discomfort in COVID-19, abdominal discomfort in SARS CoV2

Overview

Abdominal pain is a vast entity and sometimes a challenge due to its various potential diagnoses. Although COVID-19 is mainly a respiratory disease, abdominal pain is one of the symptoms of COVID-19 infection.

Historical Perspective

  • In the first WHO report, a cluster of cases of pneumonia in Wuhan, China were first reported on December 30th, 2019 by Wuhan Municipal Health Commission, China.
  • Three bronchoalveolar lavage samples collected from a patient with pneumonia of unknown etiology – a surveillance definition established following the SARS outbreak of 2002-2003 – in Wuhan Jinyintan Hospital. Real-time PCR (RT-PCR) assays on these samples were positive for pan-Betacoronavirus.
  • Nanopore sequencing and bioinformatic analyses indicated that the virus had features typical of the coronavirus family and belonged to the Betacoronavirus 2B lineage.A novel coronavirus was eventually identified.[1]
  • The first disease outbreak news on the new virus was first published by WHO on 5th January 2020.[2]
  • On March 12, 2020, WHO declared the COVID-19 outbreak a pandemic.
  • Initially COVID-19 was primarily known as a respiratory disease. In the initial phase of the pandemic, the screening criteria for COVID‐19 did not include symptoms of abdominal pain.
  • On Feb 3rd, 2020, a study published by Wang D et al. first described abdominal pain as one of the less common symptoms of COVID-19.[3]
  • With the increasing evidence and ongoing research, abdominal pain is now reported to be a common symptom in patients with COVID-19, and the viral infection is suspected in a patient presenting with abdominal pain. Research is underway to develop a better understanding of the etiology, risk factors, and treatment of abdominal pain associated with COVID-19.

Classification

There is no established system for the classification of abdominal pain in COVID-19. But a differentiation can be made based on the organ injury related to COVID-19 causing abdominal pain.

Pathophysiology

Causes

Differentiating abdominal pain due to COVID-19 from other Diseases

Epidemiology and Demographics

  • Based upon the meta-analysis including 78 studies the Weighted Pooled Prevalence (WPP) of abdominal pain associated with COVID-19 is approximately 6.2% (2.6%-10.3%). Although the data comes from four studies, the WPP of abdominal pain at illness onset was 4.1% and at admission was 7.3%.[11]

Age

  • Very limited data is available about the detailed demographics of the patients having abdominal pain as one of the symptoms of COVID-19 infection. A study reporting 10 cases presenting with abdominal pain as one of the symptoms showed the mean age of 50±18 years.

Race

  • Data from 12797 patients showed a higher weighted pooled prevalence of abdominal pain associated with COVID-19 in the non-Chinese subgroup.

Risk Factors

Natural History, Complications and Prognosis

Diagnosis

Diagnostic Criteria

  • There are no established diagnostic criteria to identify the cause of abdominal pain in SARS-CoV2 patient. Abdominal ultrasound or CT scan, and blood tests showing deranged liver functions can give a clue of possible gastrointestinal involvement.

History and Symptoms

  • The patient may have abdominal pain as an accompanying symptom along with other SARS-CoV2 infection symptoms such as anorexia, fever, cough, and malaise. Very few patients present with abdominal pain as the sole symptom and high suspicion is required in order to reach the diagnosis.

Physical Examination

Laboratory Findings

X-ray

Ultrasound

Ultrasound of the abdomen may or may not show any abnormal findings. A case of bowel inflammatory signs (peri-intestinal inflammatory reaction) has been reported in a patient with abdominal pain associated with COVID-19.[14]

CT scan

Other Imaging Findings

A study by Poggiali et al. strongly recommends bedside lung ultrasound to detect the signs of respiratory COVID-19 infection even when there are no respiratory symptoms.[14]

Treatment

Medical Therapy

Surgery

Primary Prevention

  • There have been rigorous efforts in order to develop a vaccine for novel coronavirus and several vaccines are in the later phases of trials.[17]
  • The only prevention for COVID-19 associated abdominal pain is the prevention and early diagnosis of the coronavirus-19 infection itself. According to the CDC, the measures include:[18]
    • Frequent handwashing with soap and water for at least 20 seconds or using a alcohol based hand sanitizer with at least 60% alcohol.
    • Staying at least 6 feet (about 2 arms’ length) from other people who do not live with you.
    • Covering your mouth and nose with a cloth face cover when around others and covering sneezes and coughs.
    • Cleaning and disinfecting.

Secondary prevention

References

  1. "www.who.int" (PDF).
  2. "WHO Timeline - COVID-19".
  3. Wang, Dawei; Hu, Bo; Hu, Chang; Zhu, Fangfang; Liu, Xing; Zhang, Jing; Wang, Binbin; Xiang, Hui; Cheng, Zhenshun; Xiong, Yong; Zhao, Yan; Li, Yirong; Wang, Xinghuan; Peng, Zhiyong (2020). "Clinical Characteristics of 138 Hospitalized Patients With 2019 Novel Coronavirus–Infected Pneumonia in Wuhan, China". JAMA. 323 (11): 1061. doi:10.1001/jama.2020.1585. ISSN 0098-7484.
  4. Zou, Xin; Chen, Ke; Zou, Jiawei; Han, Peiyi; Hao, Jie; Han, Zeguang (2020). "Single-cell RNA-seq data analysis on the receptor ACE2 expression reveals the potential risk of different human organs vulnerable to 2019-nCoV infection". Frontiers of Medicine. 14 (2): 185–192. doi:10.1007/s11684-020-0754-0. ISSN 2095-0217.
  5. Tian Y, Rong L, Nian W, He Y (May 2020). "Review article: gastrointestinal features in COVID-19 and the possibility of faecal transmission". Aliment. Pharmacol. Ther. 51 (9): 843–851. doi:10.1111/apt.15731. PMC 7161803 Check |pmc= value (help). PMID 32222988 Check |pmid= value (help).
  6. Gheblawi M, Wang K, Viveiros A, Nguyen Q, Zhong JC, Turner AJ, Raizada MK, Grant MB, Oudit GY (May 2020). "Angiotensin-Converting Enzyme 2: SARS-CoV-2 Receptor and Regulator of the Renin-Angiotensin System: Celebrating the 20th Anniversary of the Discovery of ACE2". Circ. Res. 126 (10): 1456–1474. doi:10.1161/CIRCRESAHA.120.317015. PMC 7188049 Check |pmc= value (help). PMID 32264791 Check |pmid= value (help).
  7. 7.0 7.1 Gao Y, Xi H, Chen L (July 2020). "Emergency Surgery in Suspected COVID-19 Patients With Acute Abdomen: Case Series and Perspectives". Ann. Surg. 272 (1): e38–e39. doi:10.1097/SLA.0000000000003961. PMC 7188052 Check |pmc= value (help). PMID 32301807 Check |pmid= value (help).
  8. Aloysius MM, Thatti A, Gupta A, Sharma N, Bansal P, Goyal H (May 2020). "COVID-19 presenting as acute pancreatitis". Pancreatology. doi:10.1016/j.pan.2020.05.003. PMC 7207100 Check |pmc= value (help). PMID 32444169 Check |pmid= value (help).
  9. 9.0 9.1 9.2 Hadi A, Werge M, Kristiansen KT, Pedersen UG, Karstensen JG, Novovic S, Gluud LL (June 2020). "Coronavirus Disease-19 (COVID-19) associated with severe acute pancreatitis: Case report on three family members". Pancreatology. 20 (4): 665–667. doi:10.1016/j.pan.2020.04.021. PMC 7199002 Check |pmc= value (help). PMID 32387082 Check |pmid= value (help).
  10. Ponnurangam Nagarajan V, Palaniyadi A, Sathyamoorthi M, Sasitharan R, Shuba S, Padur Sivaraman R, Scott JX (2012). "Pleural effusion - An unusual cause". Australas Med J. 5 (7): 369–72. doi:10.4066/AMJ.2012.1024. PMC 3413004. PMID 22905065.
  11. Tariq, Raseen; Saha, Srishti; Furqan, Fateeha; Hassett, Leslie; Pardi, Darrell; Khanna, Sahil (2020). "Prevalence and Mortality of COVID-19 patients with Gastrointestinal Symptoms: A Systematic Review and Meta-analysis". Mayo Clinic Proceedings. doi:10.1016/j.mayocp.2020.06.003. ISSN 0025-6196.
  12. 12.0 12.1 12.2 Corrêa Neto, Isaac José Felippe; Viana, Kaline Fortes; Silva, Milena Braga Soares da; Silva, Leandro Mariano da; Oliveira, Gustavo de; Cecchini, Angelo Rossi da Silva; Rolim, Alexander Sá; Robles, Laercio (2020). "Perforated acute abdomen in a patient with COVID-19: an atypical manifestation of the disease". Journal of Coloproctology. doi:10.1016/j.jcol.2020.05.011. ISSN 2237-9363.
  13. Mao, Ren; Qiu, Yun; He, Jin-Shen; Tan, Jin-Yu; Li, Xue-Hua; Liang, Jie; Shen, Jun; Zhu, Liang-Ru; Chen, Yan; Iacucci, Marietta; Ng, Siew C; Ghosh, Subrata; Chen, Min-Hu (2020). "Manifestations and prognosis of gastrointestinal and liver involvement in patients with COVID-19: a systematic review and meta-analysis". The Lancet Gastroenterology & Hepatology. 5 (7): 667–678. doi:10.1016/S2468-1253(20)30126-6. ISSN 2468-1253.
  14. 14.0 14.1 14.2 14.3 14.4 14.5 Poggiali E, Ramos PM, Bastoni D, Vercelli A, Magnacavallo A (2020). "Abdominal Pain: A Real Challenge in Novel COVID-19 Infection". Eur J Case Rep Intern Med. 7 (4): 001632. doi:10.12890/2020_001632. PMC 7162568 Check |pmc= value (help). PMID 32309266 Check |pmid= value (help).
  15. 15.0 15.1 Abdalhadi A, Alkhatib M, Mismar AY, Awouda W, Albarqouni L (2020). "Can COVID 19 present like appendicitis?". IDCases. 21: e00860. doi:10.1016/j.idcr.2020.e00860. PMC 7265835 Check |pmc= value (help). PMID 32523872 Check |pmid= value (help).
  16. Queiroz N, Barros LL, Azevedo M, Oba J, Sobrado CW, Carlos AS, Milani LR, Sipahi AM, Damião A (2020). "Management of inflammatory bowel disease patients in the COVID-19 pandemic era: a Brazilian tertiary referral center guidance". Clinics (Sao Paulo). 75: e1909. doi:10.6061/clinics/2020/e1909. PMC 7153358 Check |pmc= value (help). PMID 32321117 Check |pmid= value (help). Vancouver style error: initials (help)
  17. "NIH clinical trial of investigational vaccine for COVID-19 begins | National Institutes of Health (NIH)".
  18. "How to Protect Yourself & Others | CDC".
  19. "Contact Tracing for COVID-19 | CDC".
  20. Green CA, Quraishi MN, Shabir S, Sharma N, Hansen R, Gaya DR, Hart AL, Loman NJ, Iqbal TH (June 2020). "Screening faecal microbiota transplant donors for SARS-CoV-2 by molecular testing of stool is the safest way forward". Lancet Gastroenterol Hepatol. 5 (6): 531. doi:10.1016/S2468-1253(20)30089-3. PMC 7225406 Check |pmc= value (help). PMID 32240618 Check |pmid= value (help).

Template:WS Template:WH