Georgios Koukoulis

Dr. Georgios Koukoulis


Research Focus & Metrics

Academic Career Length

19Years (2008-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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22 November 2021 in World Journal of Gastrointestinal Pathophysiology
Verified
Journal Article
Open access
CDChristos Doudakmanis
Christos Doudakmanis
KBKonstantinos Bouliaris
Konstantinos Bouliaris
CKChristina Kolla
Christina Kolla
MEMatthaios Efthimiou
Matthaios Efthimiou
GKGeorgios Koukoulis
Georgios Koukoulis
Bacterial translocation in patients undergoing major gastrointestinal surgery and its role in postoperative sepsis

1 July 2018 in Diseases of the Colon & Rectum
Verified
Journal Article
Closed access
AMAthanasios Migdanis
Athanasios Migdanis
GKGeorgios Koukoulis
Georgios Koukoulis
IMIoannis Mamaloudis
Ioannis Mamaloudis
IBIoannis Baloyiannis
Ioannis Baloyiannis
IMIoannis Migdanis
Ioannis Migdanis
GTGeorgios Tzovaras
Georgios Tzovaras
BACKGROUND: Patients with a newly formed ileostomy often develop electrolyte abnormalities and dehydration. OBJECTIVE: The study assessed the prophylactic effect of an isotonic hydration solution on dehydration and electrolyte abnormalities in patients with a newly formed ileostomy. DESIGN: This was a prospective, randomized, controlled trial (NCT02036346). SETTINGS: The study was conducted at a single surgical unit of a public university hospital. PATIENTS: Patients scheduled for elective rectosigmoid resection were considered for study inclusion. INTERVENTION: Patients in whom a diverting ileostomy was created were randomly assigned to the intervention group (n = 39), which received an oral isotonic glucose-sodium hydration solution for 40 days postdischarge and the control group (n = 41) which did not receive an intervention. The 2 groups were compared with a group of patients who underwent rectosigmoid resection without diverting ileostomy (n = 37). MAIN OUTCOME MEASURES: Serum electrolyte and renal function markers were assessed preoperatively and at 20 and 40 days postdischarge. RESULTS: At 20 days postdischarge, the serum sodium of the control group appeared lower than the serum sodium of the intervention group and the nonileostomy group (p = 0.007). At the same time point, urea and creatinine levels of the control group were higher than the urea and creatinine levels of the other 2 groups (p = 0.01 and p = 0.02). At 40 days postdischarge, mean sodium and renal function markers improved in the control group, but sodium and creatinine continued to differ in comparison with the intervention and nonileostomy groups (p = 0.01 and p = 0.04). The readmission rate for fluid and electrolyte abnormalities was higher in the control group (24%) than in the other 2 groups, where no rehospitalization for such a reason was required (p = 0.001). LIMITATIONS: The study was limited by its single-center design. CONCLUSION: An oral isotonic drink postdischarge can have a prophylactic effect on patients with a newly formed ileostomy, preventing readmission for fluid and electrolyte abnormalities. See Video Abstract at http://links.lww.com/DCR/A603.

1 January 2012 in International Journal of Surgery Case Reports
Verified
Journal Article
Open access
GCGrigorios Christodoulidis
Grigorios Christodoulidis
DSDimitrios Symeonidis
Dimitrios Symeonidis
MSMichail Spyridakis
Michail Spyridakis
GKGeorgios Koukoulis
Georgios Koukoulis
AMAnastasios Manolakis
Anastasios Manolakis
KTKonstantinos Tepetes
Konstantinos Tepetes
Double appendix represents an extremely rare and commonly "missed" diagnosis, often with life threatening consequences. In this case report we present an interesting case of operative treatment of acute appendicitis in a doubled vermiform appendix stemming operative pitfalls. A 23-year-old female was admitted to the emergency room department complaining of diffuse abdominal pain, nausea, and vomiting over the past 36h. As soon as the diagnosis of acute appendicitis was established a laparotomy via a McBurney incision was decided. Intraoperative findings included the presence of mild quantity of free fluid and surprisingly a thin non-inflamed appendiceal process. It was the preoperative ultrasound findings suggestive of acute appendicitis that dictated a more thorough investigation of the lower abdomen that led to the discovery of a second retrocecal inflamed appendix. Formal appendectomy was then performed for both processes. The patient had an uneventful recovery and was discharged on the fourth postoperative day. Double appendix represents a challenging clinical scenario in cases of right lower quadrant pain. Life threatening consequences with legal extensions can arise from the incomplete removal of both stumps.

11 May 2023 in World Journal of Emergency Surgery
Verified
Journal Article
Open access
PDF file
AKAndrew Wallace Kirkpatrick
Andrew Wallace Kirkpatrick
ACand Federico Coccolini
and Federico Coccolini
MTMatti Tolonen
Matti Tolonen
SMSamuel Minor
Samuel Minor
Fausto CatenaFausto Catena
Fausto Catena
ZZZAIDI ZAKARIA
ZAIDI ZAKARIA
Background: Severe complicated intra-abdominal sepsis (SCIAS) has an increasing incidence with mortality rates over 80% in some settings. Mortality typically results from disruption of the gastrointestinal tract, progressive and self-perpetuating bio-mediator generation, systemic inflammation, and multiple organ failure. A further therapeutic option may be open abdomen (OA) management with negative peritoneal pressure therapy (NPPT) to remove inflammatory ascites and attenuate the systemic damage from SCIAS, although there are definite risks of leaving the abdomen open whenever it might possibly be closed. This potential therapeutic paradigm is the rationale being assessed in the Closed Or Open after Laparotomy (COOL trial) (https://clinicaltrials.gov/ct2/show/NCT03163095). Initially, the COOL trial received Industry sponsorship; however, this funding mandated the use of a specific trademarked and expensive NPPT device in half of the patients allocated to the intervention (open) arm. In August 2022, the 3 M/Acelity Corporation without consultation but within the terms of the contract canceled the financial support of the trial. Although creating financial difficulty, there is now no restriction on specific NPPT devices and removing a cost-prohibitive intervention creates an opportunity to expand the COOL trial to a truly global basis. This document describes the evolution of the COOL trial, with a focus on future opportunities for global growth of the study. Methods: The COOL trial is the largest prospective randomized controlled trial examining the random allocation of SCIAS patients intra-operatively to either formal closure of the fascia or the use of the OA with an application of an NPPT dressing. Patients are eligible if they have free uncontained intraperitoneal contamination and physiologic derangements exemplified by septic shock OR severely adverse predicted clinical outcomes. The primary outcome is intended to definitively inform global practice by conclusively evaluating 90-day survival. Initial recruitment has been lower than hoped but satisfactory, and the COOL steering committee and trial investigators intend with increased global support to continue enrollment until recruitment ensures a definitive answer. Discussion: OA is mandated in many cases of SCIAS such as the risk of abdominal compartment syndrome associated with closure, or a planned second look as for example part of “damage control”; however, improved source control (locally and systemically) is the most uncertain indication for an OA. The COOL trial seeks to expand potential sites and proceed with the evaluation of NPPT agnostic to device, to properly examine the hypothesis that this treatment attenuates systemic damage and improves survival. This approach will not affect internal validity and should improve the external validity of any observed results of the intervention. Trial registration: National Institutes of Health (https://clinicaltrials.gov/ct2/show/NCT03163095).

16 December 2022 in World Journal of Emergency Surgery
Verified
Journal Article
Open access
PDF file
Belinda De SimoneBelinda De Simone
Belinda De Simone
FAFikri M. Abu-Zidan
Fikri M. Abu-Zidan
ECElie Chouillard
Elie Chouillard
SSSalomone Di Saverio
Salomone Di Saverio
MSMassimo Sartelli
Massimo Sartelli
Fausto CatenaFausto Catena
Fausto Catena
Background: The incidence of the highly morbid and potentially lethal gangrenous cholecystitis was reportedly increased during the COVID-19 pandemic. The aim of the ChoCO-W study was to compare the clinical findings and outcomes of acute cholecystitis in patients who had COVID-19 disease with those who did not. Methods: Data were prospectively collected over 6 months (October 1, 2020, to April 30, 2021) with 1-month follow-up. In October 2020, Delta variant of SARS CoV-2 was isolated for the first time. Demographic and clinical data were analyzed and reported according to the STROBE guidelines. Baseline characteristics and clinical outcomes of patients who had COVID-19 were compared with those who did not. Results: A total of 2893 patients, from 42 countries, 218 centers, involved, with a median age of 61.3 (SD: 17.39) years were prospectively enrolled in this study; 1481 (51%) patients were males. One hundred and eighty (6.9%) patients were COVID-19 positive, while 2412 (93.1%) were negative. Concomitant preexisting diseases including cardiovascular diseases (p < 0.0001), diabetes (p < 0.0001), and severe chronic obstructive airway disease (p = 0.005) were significantly more frequent in the COVID-19 group. Markers of sepsis severity including ARDS (p < 0.0001), PIPAS score (p < 0.0001), WSES sepsis score (p < 0.0001), qSOFA (p < 0.0001), and Tokyo classification of severity of acute cholecystitis (p < 0.0001) were significantly higher in the COVID-19 group. The COVID-19 group had significantly higher postoperative complications (32.2% compared with 11.7%, p < 0.0001), longer mean hospital stay (13.21 compared with 6.51 days, p < 0.0001), and mortality rate (13.4% compared with 1.7%, p < 0.0001). The incidence of gangrenous cholecystitis was doubled in the COVID-19 group (40.7% compared with 22.3%). The mean wall thickness of the gallbladder was significantly higher in the COVID-19 group [6.32 (SD: 2.44) mm compared with 5.4 (SD: 3.45) mm; p < 0.0001]. Conclusions: The incidence of gangrenous cholecystitis is higher in COVID patients compared with non-COVID patients admitted to the emergency department with acute cholecystitis. Gangrenous cholecystitis in COVID patients is associated with high-grade Clavien-Dindo postoperative complications, longer hospital stay and higher mortality rate. The open cholecystectomy rate is higher in COVID compared with non -COVID patients. It is recommended to delay the surgical treatment in COVID patients, when it is possible, to decrease morbidity and mortality rates. COVID-19 infection and gangrenous cholecystistis are not absolute contraindications to perform laparoscopic cholecystectomy, in a case by case evaluation, in expert hands. Graphical
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7 December 2013 in Surgery Today
Verified
Journal Article
Closed access
PDF file
EBEffrosyni Bompou
Effrosyni Bompou
IBIoannis Baloyiannis
Ioannis Baloyiannis
GKGeorgios Koukoulis
Georgios Koukoulis
KPKonstantinos Pratsas
Konstantinos Pratsas
SGStavroula Georgopoulou
Stavroula Georgopoulou
GTGeorge Tzovaras
George Tzovaras