British Journal of Research Offener Zugang

Abstrakt

Gastroeneterology,hepatology complications during COVID-19 pandemic with endoscopy planning â??the dilemna

Kulvinder Kochar Kaur

Digestive symptoms including anorexia, nausea, vomiting, diarrhea (N,V,D)- frequently reported in patients withCOVID-19-disease[CD]) .SARS-CoV-2 RNA was first detected in stool of the 1st reported CD-19 case in the USA, who also presented with  the digestive symptoms of (N.V,D). In the biggest cohort -1099 patients with laboratory-confirmed CD-19 from 552  hospitals in China in Jan 2020,N,V,D were reported in55(5%) and 42(3.8%) patients, respectively. Of the204 patients with CD-19 and full investigations , 99 (48.5%) presented with digestive symptoms as main complaint. Patients with digestive symptoms had  separate manifestations,like anorexia (83.8%),V,D and abdominal pain (0.4%). Digestive symptoms - might  be presenting prior to respiratory symptoms, or onlysymptoms of  CD-19 The mode for  GITinfection of SARSCoV is ACE2 cell receptor.SARS-CoV-2, having genome  sequence of  SARS-CoV(82%), might use the same ACE2, >strain -SARS-CoV(2003). Xiao et al  showed on endoscopic biopsy samples that ACE2 was rarely expressed in esophageal  epithelium, but abundantly distributed in cilia of glandular epithelia, while staining of viral nucleocapsid protein was visualized in the cytoplasm of gastric, duodenal, and rectum glandular  epithelial cell, but not in esophageal epithelium.as found in another study in the small intestine,The  crosstalk amongSARS-CoV-2 -ACE2 might disrupt  the function of ACE2 and cause diarrhea.Chances of fecal–oral transmission of SARS-CoV-2  stressed on  proper hand hygiene ,stools handling and hospital sewage  carefully in pts. SARS-CoV-2 in the GIT,signifies  CD-19 infection   in patients with preexisting digestive diseases and fecal  microbiota transplant donors. To prevent  SARS-CoV-2 transmission by fecal microbiota transplantation,  more testing  needed over  current ones.GIT endoscopy departments face  marked  transmissions risk of virus during endoscopy .Earliest reports of CD-19 , 40/138  showed high risk of infection  for healthcare workers  of infection.Possible routes of  viral transmission onendoscopy examination - person-to-person, respiratory droplets, aerosols formed onendoscopy, and contact with  contaminated surroundings, body fluids, and fecal material.Recommendation used-World Endoscopy Organization, ASGE,ESGE  on  endoscopy   during the pandemic.Liver  damage was common in the patients infected by the other 2 highly pathogenic coronavirus-SARS-CoV, MERS CoV associated with    the severity of diseases. In patients with CD-19, several  studies have documented the incidence of liver injury , indicating  that 2- 11% of patients with CD-19 had liver  comorbidities and 16 -53% cases reported abnormal levels  of SGOT /PT.Guan et al and Huang  showed that elevated AST levels  were observed  more in pts with severe disease,. Liver injury might be due to viral infection in liver cells or due to other causes such as drug induced  liver injury and systemic inflammation induced  by CKSor pneumonia-related hypoxia. SARS virus  has been shown to be present in the liver tissue, although the  viral titer was relatively low because viral inclusions were not observed.The impact of COVID-19 in patients with preexisting chronic liver diseases, needs evaluation.from Chinese study  showed that chronic hepatitis B infection  pts didn’t  have higher disease severity vs population as did world cases. Major changes to the  standard management of GIT diseases, priorities  like minimizing viral transmission, preserving  PPE, and freeing hospital beds  have driven unconventional approaches to managing GI patients. Conversion of endoscopy units to CD units and redeployment of GI fellows and  faculty has profoundly changed most GI services.Meanwhile, consult and procedural volumes have  reduced drastically..Sethi et al., showed how  dealing specific consults  and conditions haschanged, the mainfocus  is   on noninvasive measures and maximizing medical therapies.Endoscopic procedures have been reserved for those  timely interventions that are most likely to be therapeutic.The role of multidisciplinary discussion, although  important, has become critical now.Advancing a clear vision and a transparent process for how  to organize and triage care in the recovery phase will allow    for a smooth transition to our new normal.  For percutaneous endoscopic gastrostomy(PEG) placements even in this time of  pandemic needs to be avoided . Despite the viral effects of the SARS-CoV-2 in the GIT, enteral nutrition is still the preferred method of nutrition therapy for patients with CD-19 because of its multiple benefits in the gut. It supports the structural  and functional integrity of the gut, thereby modulating  systemic immunity, attenuating disease severity,aiding in good results. However, the  presence of GI symptoms such as anorexia, N,V,Din some patients with CD-19complicates this challenge to feed the patient.

For  emergency colorectal surgery, like cancer surgery ,queries on operating room (OR) utilization and techniques  needed to be addressed. Caregiver safety  relating to PPE and OR environment.with,extra   PPE may be required on  local presence of CD-19 testing   plus incidence of known infection there.Besides standard CD-19 PPE precautions, a negative-pressure environment, including an OR, is advocated,mainly  for  aerosol-generating procedures(AGPs). Hospital spaces from patient wards toORs to endoscopy  rooms have been successfullyconverted from standard positive-pressure to negative-pressure  spaces.Moreover, minimally invasive  surgery with pneumoperitoneum is an AGP and thus  must be carefullyconsidered. Present worry is  to avoid in  patients  infected with SARS-CoV-2 or we can dounder precautions with safety measures inplace -minimize exposure to aerosolized virus particles.Significant  lessons learned from pressurized   intraperitoneal aerosolized chemotherapy procedures are   helpful  to improve our insight &treat. Mayo Clinic researchers, used a computer model to compare three strategies for CD-19 testing using  PCR for patients scheduled to undergo endoscopic procedures during the CD-19 pandemic:strategy

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