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  1. Article: Monitoring the Cerebral Oximetry Index Along With In-line Cardiopulmonary Bypass Parameters in a High-Risk Patient Undergoing Cardiac Surgery: A Case Report.

    Gkiouliava, Anna / Sarridou, Despoina G / Argiriadou, Helena

    Cureus

    2023  Volume 15, Issue 6, Page(s) e40426

    Abstract: The quest to minimize the morbidity and mortality of patients undergoing cardiac surgery is ongoing. Impaired cerebral autoregulation and tissue malperfusion are linked with neurological complications. The cerebral oximetry index (COx) has been ... ...

    Abstract The quest to minimize the morbidity and mortality of patients undergoing cardiac surgery is ongoing. Impaired cerebral autoregulation and tissue malperfusion are linked with neurological complications. The cerebral oximetry index (COx) has been introduced as an index of cerebral autoregulation, while in-line monitoring enables the detection and prevention of metabolic disturbances during cardiopulmonary bypass (CPB). This report presents the case of a 58-year-old female patient scheduled for aortic valve replacement under minimally invasive extracorporeal circulation (MiECC). Her medical history consisted of epilepsy, multiple ischemic strokes, heavy smoking, and brachiocephalic artery stenosis. We sought to investigate the limits of autoregulation and the role of metabolic indices of perfusion on COx. Mean arterial blood pressure (ABP), cerebral oximetry (rSO
    Language English
    Publishing date 2023-06-14
    Publishing country United States
    Document type Case Reports
    ZDB-ID 2747273-5
    ISSN 2168-8184
    ISSN 2168-8184
    DOI 10.7759/cureus.40426
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: The Efficacy of the Combination of Continuous Femoral Nerve Block and Intravenous Parecoxib on Rehabilitation in Patients Undergoing Total Knee Arthroplasty: A Double-Blind, Randomized Clinical Trial.

    Sarridou, Despoina / Gkiouliava, Anna / Argiriadou, Helena / Varrassi, Giustino / Chalmouki, Georgia / Vadalouca, Athina / Moka, Eleni

    Cureus

    2024  Volume 16, Issue 3, Page(s) e56420

    Abstract: Background and aim: The optimal strategy for the management of postoperative pain after total knee arthroplasty (TKA) remains challenging, while its treatment is crucial to increase patients' outcomes. This study aimed to investigate the effects of ... ...

    Abstract Background and aim: The optimal strategy for the management of postoperative pain after total knee arthroplasty (TKA) remains challenging, while its treatment is crucial to increase patients' outcomes. This study aimed to investigate the effects of parecoxib as add-on therapy, in a standard postoperative pain management protocol, represented by the continuous femoral nervous block. We studied its influence on rehabilitation indices and pain scores in patients undergoing TKA.
    Material and methods: This is a single-center, prospective, double-blind, randomized, placebo-controlled trial. All patients were operated with the use of subarachnoid anesthesia, and divided into two groups for postoperative analgesia. Both groups received a continuous femoral nerve block. One of the groups received intravenous parecoxib, while the other received a placebo. The primary investigated outcome was the range of motion (ROM). Recordings were noted at different times postoperatively. Bromage score (BS), visual analog scale (VAS), and the State-Trait Anxiety Inventory (STAI) were also studied.
    Results: A total of 90 patients were included and analyzed. ROM was significantly better (p<0.001) and pain scores were significantly lower (p=0.007) in the parecoxib group. No statistically significant difference was found with regard to BS between the two groups. A significant correlation was found between ROM and VAS pain scores at 12 hours (p=0.02), while ROM was inversely correlated with STAI postoperatively.
    Conclusions: The use of intravenous parecoxib is effective in improving rehabilitation indices and provides decreased postoperative pain scores after TKA.
    Language English
    Publishing date 2024-03-18
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2747273-5
    ISSN 2168-8184
    ISSN 2168-8184
    DOI 10.7759/cureus.56420
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Perioperative management of a double valve replacement and coronary artery bypass graft in a patient with carcinoid syndrome; a case report and literature review.

    Sarridou, Despoina G / Gkiouliava, Anna / Argiriadou, Helena / Mouratoglou, Sophia Anastasia / Mitchell, Jeremy B / Walker, Christopher P

    Perfusion

    2024  , Page(s) 2676591241247977

    Abstract: Introduction: Carcinoid tumors are rare neuroendocrine tumors; about 5% of patients develop the carcinoid syndrome. We present the case of a patient with carcinoid syndrome undergoing cardiac surgery.: Case report: A 74-year-old patient with ... ...

    Abstract Introduction: Carcinoid tumors are rare neuroendocrine tumors; about 5% of patients develop the carcinoid syndrome. We present the case of a patient with carcinoid syndrome undergoing cardiac surgery.
    Case report: A 74-year-old patient with carcinoid heart disease and hepatic metastases underwent double valve replacement and CABG. The patient was on octreotide therapy and antihypertensive medication. An octreotide infusion was commenced perioperatively. Pharmaceutical agents that could potentially precipitate histamine release or exacerbate catecholamine secretion and carcinoid crises were avoided. Postoperatively, recovery was complicated by atrial fibrillation, chest infection, pleural effusions, acute kidney injury and delirium.
    Discussion: Hepatic metastases cause systemic hormones' secretion, which cause a carcinoid crisis. Perioperative administration of octreotide is used, while vigilance is required to differentiate between hemodynamic effects related to the operation or disease specific factors.
    Conclusion: No carcinoid crisis was evident perioperatively. High vigilance with appropriate monitoring, aggressive management combined with meticulous choice of pharmaceutical agents led to this outcome.
    Language English
    Publishing date 2024-04-16
    Publishing country England
    Document type Journal Article
    ZDB-ID 645038-6
    ISSN 1477-111X ; 0267-6591
    ISSN (online) 1477-111X
    ISSN 0267-6591
    DOI 10.1177/02676591241247977
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  4. Article ; Online: Individualized heparin monitoring and management reduces protamine requirements in cardiac surgery on minimal invasive extracorporeal circulation; A prospective randomized study.

    Gkiouliava, Anna / Argiriadou, Helena / Antonitsis, Polychronis / Goulas, Antonis / Papapostolou, Evangelia / Sarridou, Despoina / Karapanagiotidis, Georgios T / Anastasiadis, Kyriakos

    Perfusion

    2023  , Page(s) 2676591231204284

    Abstract: Introduction: Individualized heparin and protamine management is increasingly used as a strategy to reduce coagulation activation and bleeding complications. While it is associated with increased heparin requirements during Cardiopulmonary Bypass (CPB), ...

    Abstract Introduction: Individualized heparin and protamine management is increasingly used as a strategy to reduce coagulation activation and bleeding complications. While it is associated with increased heparin requirements during Cardiopulmonary Bypass (CPB), the impact on protamine administration remains controversial. We aim to investigate the effect of heparin level-guided monitoring on protamine dosing during cardiac surgery where low-anticoagulation protocols are implemented.
    Methods: This is a prospective, randomized, controlled trial. A total of 132 patients undergoing elective full-spectrum cardiac surgery with Minimal Invasive Extracorporeal Circulation (MiECC) were recruited. All patients were managed by the same anaesthetic, surgical and perfusion team. Patients were randomly allocated in two groups; the individualized heparin-protamine titration (IHPT) group and the conventional heparinization and reversal group by using ACT (cACT) with a 0.75:1, protamine: heparin ratio. Titration was accomplished with the Hepcon HMS Plus (Medtronic, Minneapolis, MN) system. The primary outcome of the study was the total protamine dose used. Secondary outcomes comprised of the total heparin dose, the percentage of patients achieving target ACT, 24-h transfusion requirements, postoperative bleeding, duration of mechanical ventilation, major morbidity and length of hospital stay. Patients in each group were divided in two subgroups according to the target ACT; those operated for coronary artery bypass grafting (CABG) using a target ACT >300 s and the rest (non-CABG) patients operated with a target ACT >400 s, respectively.
    Results: Protamine requirements were significantly reduced when IHPT was implemented; CABG (118 ± 24 mg vs 163 ± 61 mg;
    Conclusions: Individualized heparin monitoring and management reduces protamine requirements in cardiac surgery with MiECC implementing reduced anticoagulation strategy.
    Trial registration: clinicaltrials.gov; NCT04215588.
    Language English
    Publishing date 2023-09-30
    Publishing country England
    Document type Journal Article
    ZDB-ID 645038-6
    ISSN 1477-111X ; 0267-6591
    ISSN (online) 1477-111X
    ISSN 0267-6591
    DOI 10.1177/02676591231204284
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  5. Article ; Online: Minimal invasive extracorporeal circulation preserves coagulation integrity.

    Argiriadou, Helena / Antonitsis, Polychronis / Gkiouliava, Anna / Papapostolou, Evangelia / Deliopoulos, Apostolos / Anastasiadis, Kyriakos

    Perfusion

    2021  Volume 37, Issue 3, Page(s) 257–265

    Abstract: Introduction: Coagulopathy after cardiac surgery is a serious multifactorial complication that results in postoperative bleeding requiring transfusion of red blood cells and procoagulant products. Use of cardiopulmonary bypass represents the major ... ...

    Abstract Introduction: Coagulopathy after cardiac surgery is a serious multifactorial complication that results in postoperative bleeding requiring transfusion of red blood cells and procoagulant products. Use of cardiopulmonary bypass represents the major contributing factor affecting coagulation. We sought to prospectively investigate the effect of contemporary minimal invasive extracorporeal circulation (MiECC) on coagulation parameters using point-of-care (POC) rotational thromboelastometry and the relation to postoperative bleeding.
    Methods: Patients undergoing elective cardiac surgery on MiECC were prospectively recruited. Anticoagulation strategy was based on individualized heparin management and heparin level-guided protamine titration. Rotational thromboelastometry testing was performed before induction of anesthesia and after aortic cross-clamp release. A strict POC-guided transfusion protocol was implemented. The primary endpoint was the assessment of viscoelastic properties of the coagulating blood at the end of surgery compared to preoperative values and the relation to postoperative bleeding and 24-hour transfusion requirements.
    Results: Fifty patients were included in the study with a significant proportion having complex surgery. Thirteen patients (26%) required blood transfusion (mean rate: 0.5 ± 1 units per patient), 5/50 (10%) received coagulation factors while no patient received fresh frozen plasma, platelets or fibrinogen. Thromboelastometry analysis showed that the major derangement was CT EXTEM > 100 seconds in 28/50 (56%) and A10 EXTEM < 40 mm in one (2%) patient without clinical significance. Platelet function was preserved throughout surgery. A10-FIBTEM was found predictive of postoperative bleeding at 12 hours.
    Conclusions: MiECC preserves clot quality throughout surgery acting in both key determinants of clot strength; fibrinogen and platelets. This is clinically translated into minimal postoperative bleeding and restricted use of blood products and coagulation factors.
    MeSH term(s) Extracorporeal Circulation/adverse effects ; Fibrinogen ; Hemostatics ; Heparin ; Humans ; Postoperative Hemorrhage ; Thrombelastography/methods
    Chemical Substances Hemostatics ; Fibrinogen (9001-32-5) ; Heparin (9005-49-6)
    Language English
    Publishing date 2021-02-26
    Publishing country England
    Document type Journal Article
    ZDB-ID 645038-6
    ISSN 1477-111X ; 0267-6591
    ISSN (online) 1477-111X
    ISSN 0267-6591
    DOI 10.1177/0267659121998544
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  6. Article ; Online: Breakthrough infections after COVID-19 vaccination: Insights, perspectives and challenges.

    Amanatidou, Evropi / Gkiouliava, Anna / Pella, Eva / Serafidi, Maria / Tsilingiris, Dimitrios / Vallianou, Natalia G / Karampela, Irene / Dalamaga, Maria

    Metabolism open

    2022  Volume 14, Page(s) 100180

    Abstract: Vaccination programs against SARS-CoV-2 constitute the mainstay of public health interventions against the global COVID-19 pandemic. Currently available vaccines have shown 90% or better rates of protection against severe disease and mortality. Barely a ... ...

    Abstract Vaccination programs against SARS-CoV-2 constitute the mainstay of public health interventions against the global COVID-19 pandemic. Currently available vaccines have shown 90% or better rates of protection against severe disease and mortality. Barely a year after vaccines became available, the Omicron variant and its unprecedented speed of transmission has posed a new challenge. Overall, Omicron presents increased immune escape, transmissibility, and decreased pathogenicity. Vaccines do not offer a full protection against SARS-CoV-2 acquisition, since "breakthrough" infections may occur in fully vaccinated individuals, who may in turn spread the virus to others. Breakthrough infections may be causally related to the viral profile (viral variant and load, incubation period, transmissibility, pathogenicity, immune evasion), immunity characteristics (mucosal versus systemic immunity, duration of immunity, etc.), host determinants (age, comorbidities, immune status, immunosuppressive drugs) and vaccination properties (platform, antigen dose, dose number, dose interval, route of administration). Determining the rate of breakthrough infections may be challenging and necessitates the conduction of population-based studies regarding vaccine effectiveness as well as neutralizing antibody testing, a surrogate of immune protection. In this review, we analyze the causes of breakthrough infections, their clinical consequences (severity of infection and transmission), methods of determining their incidence as well as challenges and perspectives. Long COVID as well as multi-inflammatory syndrome in adolescents may be significantly reduced in breakthrough infections. The need for universal pancoranavirus vaccines that would aim at protecting against a plethora of SARS-CoV-2 variants as well as emerging variants is discussed. Finally, novel vaccine strategies, such as nasal vaccines, may confer robust mucosal and systemic protection, reducing efficiently transmission.
    Language English
    Publishing date 2022-03-17
    Publishing country England
    Document type Journal Article
    ISSN 2589-9368
    ISSN (online) 2589-9368
    DOI 10.1016/j.metop.2022.100180
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  7. Article ; Online: Giant Adrenocortical Carcinoma: A Case Report and Review of the Relevant Literature.

    Mantzoros, Ioannis / Bitsianis, Stefanos / Loutzidou, Lydia / Ntampakis, Georgios / Chatzakis, Christos / Christidis, Panagiotis / Gkiouliava, Anna / Koraki, Eleni / Aggelopoulos, Stamatios

    The American journal of case reports

    2021  Volume 22, Page(s) e928875

    Abstract: BACKGROUND Adrenocortical carcinomas are rare and aggressive tumors often diagnosed as incidentalomas. The malignancy can present with abnormal hormone secretion or the tumor may be non-functioning and present as a palpable mass causing discomfort. Here, ...

    Abstract BACKGROUND Adrenocortical carcinomas are rare and aggressive tumors often diagnosed as incidentalomas. The malignancy can present with abnormal hormone secretion or the tumor may be non-functioning and present as a palpable mass causing discomfort. Here, we present a case of an adrenal cortical carcinoma originally identified as an incidentaloma. CASE REPORT A 63-year-old woman presented with abdominal pain and discomfort. A large abdominal mass, occupying the left upper and lower quadrant, was palpated. Imaging revealed a mass occupying the left abdomen between the stomach and the spleen, applying pressure on the pylorus, duodenum, splenic vessels, and pancreas. The mass size was 21.2×13×14.6 cm. Hormonal investigations were normal. Surgical exploration was performed, and the tumor was excised. Pathological analysis revealed an adrenocortical carcinoma and the patient underwent adjuvant chemotherapy. Twelve months later, the carcinoma recurred. The patient underwent a second operation in which the recurrent mass was excised along with the tail of the pancreas and a small part of the left lobe of the liver. The postoperative period was uneventful, and the patient was discharged home on the 7th postoperative day. No further adjuvant therapy was applied. The patient remains disease-free 18 months after the reoperation. CONCLUSIONS Giant adrenocortical carcinomas, although rare, pose a challenge to the surgical team both diagnostically and therapeutically. Surgical excision with the appropriate oncologic support can guarantee excellent outcomes.
    MeSH term(s) Adrenal Cortex Neoplasms/diagnostic imaging ; Adrenal Cortex Neoplasms/surgery ; Adrenocortical Carcinoma/diagnostic imaging ; Adrenocortical Carcinoma/surgery ; Combined Modality Therapy ; Female ; Humans ; Liver ; Middle Aged ; Neoplasm Recurrence, Local
    Language English
    Publishing date 2021-04-04
    Publishing country United States
    Document type Case Reports ; Journal Article
    ZDB-ID 2517183-5
    ISSN 1941-5923 ; 1941-5923
    ISSN (online) 1941-5923
    ISSN 1941-5923
    DOI 10.12659/AJCR.928875
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  8. Article ; Online: Minimal invasive extracorporeal circulation preserves platelet function after cardiac surgery: a prospective observational study.

    Argiriadou, Helena / Antonitsis, Polychronis / Gkiouliava, Anna / Papapostolou, Evangelia / Deliopoulos, Apostolos / Anastasiadis, Kyriakos

    Perfusion

    2019  Volume 35, Issue 2, Page(s) 138–144

    Abstract: Introduction: Cardiac surgery on conventional cardiopulmonary bypass induces a combination of thrombocytopenia and platelet dysfunction which is strongly related to postoperative bleeding. Minimal invasive extracorporeal circulation has been shown to ... ...

    Abstract Introduction: Cardiac surgery on conventional cardiopulmonary bypass induces a combination of thrombocytopenia and platelet dysfunction which is strongly related to postoperative bleeding. Minimal invasive extracorporeal circulation has been shown to preserve coagulation integrity, though effect on platelet function remains unclear. We aimed to prospectively investigate perioperative platelet function in a series of patients undergoing cardiac surgery on minimal invasive extracorporeal circulation using point-of-care testing.
    Methods: A total of 57 patients undergoing elective cardiac surgery on minimal invasive extracorporeal circulation were prospectively recruited. Anticoagulation strategy was based on individualized heparin management and heparin level-guided protamine titration performed in all patients with a specialized point-of-care device (Hemostasis Management System - HMS Plus; Medtronic, Minneapolis, MN, USA). Platelet function was evaluated with impedance aggregometry using the ROTEM platelet (TEM International GmbH, Munich, Germany). ADPtest and TRAPtest values were assessed before surgery and after cardiopulmonary bypass.
    Results: ADPtest value was preserved during surgery on minimal invasive extracorporeal circulation (58.2 ± 20 U vs. 53.6 ± 21 U; p = 0.1), while TRAPtest was found significantly increased (90 ± 27 U vs. 103 ± 38 U; p = 0.03). Postoperative ADPtest and TRAPtest values were inversely related to postoperative bleeding (correlation coefficient: -0.29; p = 0.03 for ADPtest and correlation coefficient: -0.28; p = 0.04 for TRAPtest). The preoperative use of P2Y12 inhibitors was identified as the only independent predictor of a low postoperative ADPtest value (OR = 15.3; p = 0.02).
    Conclusion: Cardiac surgery on minimal invasive extracorporeal circulation is a platelet preservation strategy, which contributes to the beneficial effect of minimal invasive extracorporeal circulation in coagulation integrity.
    MeSH term(s) Cardiac Surgical Procedures/methods ; Extracorporeal Circulation/methods ; Female ; Humans ; Male ; Middle Aged ; Platelet Function Tests/methods ; Prospective Studies
    Language English
    Publishing date 2019-08-05
    Publishing country England
    Document type Journal Article
    ZDB-ID 645038-6
    ISSN 1477-111X ; 0267-6591
    ISSN (online) 1477-111X
    ISSN 0267-6591
    DOI 10.1177/0267659119866289
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  9. Article ; Online: Predictive factors for difficult airway management in patients with maxillofacial trauma. A retrospective study.

    Chatzakis, Christos / Gkiouliava, Anna / Mitos, Giakoumis / Sifaki, Freideriki / Pistiolas, Georgios / Koraki, Eleni

    Journal of clinical anesthesia

    2019  Volume 61, Page(s) 109663

    MeSH term(s) Airway Management ; Humans ; Maxillofacial Injuries/surgery ; Retrospective Studies
    Language English
    Publishing date 2019-11-26
    Publishing country United States
    Document type Letter
    ZDB-ID 1011618-7
    ISSN 1873-4529 ; 0952-8180
    ISSN (online) 1873-4529
    ISSN 0952-8180
    DOI 10.1016/j.jclinane.2019.109663
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  10. Article ; Online: The feasibility and effect of intraperitoneal administration of regorafenib on peritoneal carcinomatosis from colorectal cancer in the rat.

    Bitsianis, Stefanos / Mantzoros, Ioannis / Gkiouliava, Anna / Chatzakis, Christos / Bekiari, Chryssa / Loutzidou, Lydia / Ntampakis, Georgios / Christidis, Panagiotis / Domvri, Kalliopi / Porpodis, Konstantinos / Ioannidis, Orestis / Aggelopoulos, Stamatios

    Annali italiani di chirurgia

    2022  Volume 93, Page(s) 592–598

    Abstract: Aim: Our goal was to investigate the potential use and efficacy of regorafenib for IPEC in an animal model of colorectal derived peritoneal metastases. Twenty four male rats were included. Carcinogenesis was induced in all rats through intraperitoneal ... ...

    Abstract Aim: Our goal was to investigate the potential use and efficacy of regorafenib for IPEC in an animal model of colorectal derived peritoneal metastases. Twenty four male rats were included. Carcinogenesis was induced in all rats through intraperitoneal injection of cancer.
    Material and methods: Cells at T0. At T1(Day 28) they were randomly allocated 1:1:1:1 into 4 groups and underwent median laparotomy and the corresponding intervention. Specifically, Group A: no other intervention; Group B: cytoreductive surgery; Group C: intraperitoneal chemotherapy with regorafenib; and Group D: cytoreductive surgery and intraperitoneal chemotherapy with regorafenib. At T2 (Day 56) rats were euthanized and laparotomy was performed for further investigation. The primary outcome was the experimental Peritoneal Cancer Index (ePCI) at T2. Secondary outcomes include relative change of body weight between T1 and T2, weight of the ascites, anastomotic leak/peritonitis and death.
    Results: The ePCI was significantly lower in Group D as opposed to all other groups. Comparing Group C versus Group A we found a trend towards lesser tumor progression, but no significant difference. Growth of rats in Group D was significantly least affected compared to all other groups. Animals undergoing CRS in Group B developed less ascites than Group A and C. Less ascites was found in Group D compared to Group A and C.
    Conclusions: Intraperitoneal chemotherapy with regorafenib combined with cytoreductive surgery may impair metastases' progression.
    Key words: Regorafenib, Chemotherapy, Cytoreductive surgery, Colorectal cancer, Intraperitoneal injection.
    MeSH term(s) Animals ; Antineoplastic Combined Chemotherapy Protocols ; Ascites ; Colorectal Neoplasms/pathology ; Combined Modality Therapy ; Cytoreduction Surgical Procedures ; Feasibility Studies ; Hyperthermia, Induced ; Injections, Intraperitoneal ; Male ; Peritoneal Neoplasms/pathology ; Phenylurea Compounds ; Pyridines ; Rats ; Survival Rate
    Chemical Substances Phenylurea Compounds ; Pyridines ; regorafenib (24T2A1DOYB)
    Language English
    Publishing date 2022-10-18
    Publishing country Italy
    Document type Journal Article
    ZDB-ID 418927-9
    ISSN 2239-253X ; 0003-469X
    ISSN (online) 2239-253X
    ISSN 0003-469X
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