Absceso cerebral por Eikenella corrodens en un paciente pediátrico inmunocompetente / Cerebral abscess due to Eikenella corrodens in an immunocompetent pediatric patient

Resumen Introducción: Los abscesos cerebrales son una urgencia neurológica grave con alto riesgo de déficit neurológico permanente. Son patologías raras en la edad pediátrica, con una incidencia anual de 0.5 por 100,000 niños. Se han realizado pocos estudios de abscesos cerebrales de origen odontogénico y la mayoría de los pacientes son adultos con patología dental de base. Eikenella corrodens es un cocobacilo gramnegativo anaerobio facultativo de crecimiento fastidioso, que forma parte de la biota de la cavidad oral, pero es un patógeno frecuente en infecciones de cabeza y cuello, así como en infecciones dentales. Caso clínico: Paciente de sexo masculino de 16 años, previamente sano, que presentó cefalea de 2 meses de evolución acompañada de náuseas y vómitos. Antecedente de extracción del cuarto molar superior derecho 4 meses antes, sin uso de profilaxis antibiótica. La resonancia magnética de cráneo mostró una lesión compatible con absceso cerebral. Se realizó drenaje por punción guiada por estereotaxia, del que se aisló E. corrodens. El paciente completó un tratamiento con ceftriaxona y metronidazol por vía intravenosa durante 4 semanas y ampicilina-sulbactam por vía oral por 2 semanas más. Conclusiones: Los abscesos cerebrales de origen odontogénico causados por E. corrodens en la edad pediátrica son muy raros. Actualmente, el uso de antibióticos profilácticos en procedimientos dentales es controversial, ya que se ha documentado el aumento de la resistencia microbiana por su uso indiscriminado. La optimización de los estudios diagnósticos y el tratamiento multidisciplinario han mejorado el pronóstico de los pacientes con absceso cerebral.

Abstract Background: Brain abscesses are a serious neurological emergency with a high risk of permanent neurological deficit. The pathology is a rare in the pediatric age: the annual incidence is 0.5 per 100,000 children. There are a few studies of brain abscesses of oral origin mostly in adult patients with an underlying dental pathology. Eikenella corrodens, a slow-growing, Gram negative, facultatively anaerobic rod-bacillus, is part of the oral cavity biota, and common as a pathogen in head, neck, and dental infections. Case report: A previously healthy 16-year-old male presented a headache of 2 months of evolution accompanied by nausea and vomiting. Four months earlier, the fourth upper right molar was extracted, with no antibiotic prophylactic treatment. Magnetic resonance imaging of the skull showed a lesion compatible with brain abscess. Stereotaxy-guided puncture drainage was performed, isolating E. corrodens. The treatment was with ceftriaxone and metronidazole intravenously for four weeks and ampicillin sulbactam orally for two more weeks. Conclusions: Brain abscesses of odontogenic origin by E. corrodens in the pediatric age are very rare. Currently, the use of prophylactic antibiotics in dental procedures is controversial because the indiscriminate use increases antimicrobial resistance. The optimization of diagnostic studies and multidisciplinary treatment has improved the prognosis of patients with brain abscesses.

Effectiveness and use of prophylactic antibiotics in elective and emergency caesarean section at tertiary care hospital

Background: Post-operative infections in obstetrics and gynecological settings have been higher compared to other specialties. Women undergoing caesarean section have 5 to 20-fold greater risk for infection compared with vaginal delivery. Many studies reported antimicrobial prophylaxis prevent post-operative infections. Hence this study concentrates the evaluation of the prescribing antimicrobial use and to assess the frequency of post-operative morbidity related to infection in subjects undergoing caesarean section. The aim of the study was to analysis the effectiveness, prophylactic antibiotics (amoxicillin versus ceftriaxone) and to evaluate the post-operative (caesarean) infections in patients undergoing lower segment caesarean section (elective and emergency).Methods: This is a prospective observational study which assessed the effectiveness and use of prophylactic antibiotics in patients undergoing cesarean section at department of obstetrics and gynecology. The study was conducted over a period of one year.Results: The corresponding mean age of all the study population in amoxicillin group (n=113) was 56.5±28.5 and in ceftriaxone group (n=97) was 48.5±26.5 respectively. The participant who underwent previous cesarean section in amoxicillin group is 65.48% similarly in ceftriaxone group is 47.42%. The patients with fetal distress in ceftriaxone group are 14.77% and in amoxicillin group is 8.92%. Failed induction in amoxicillin group is 9.82% and in ceftriaxone group is 6.81%. The number of days in hospital stay in amoxicillin group is 42.42% and in ceftriaxone group is 45.94%. The post-operative complications in amoxicillin group reported, with Febrile Illness are 40% and wound Infection is 60%.Conclusions: Administration of pre-operative antibiotics significantly reduce post-operative infections. Use of ceftriaxone as a prophylactic antibiotic in patients undergoing lower segment caesarean section (elective and emergency) is more effective than Amoxicillin in preventing post-operative infections.

A Prospective Study Comparing No Antibiotic versus Antibiotic Prophylaxis in Patients Undergoing Elective Laparoscopic Cholecystectomy

Laparoscopic cholecystectomy is one of the most common operations performed in general surgery. Elective laparoscopiccholecystectomy has a low risk for infective complications, and standard guidelines do not recommend prophylactic antibioticuse for low-risk cases. However, the use of antibiotic prophylaxis is very prevalent and the duration and dosage are inconsistentand varies widely among surgeons. This study is being done to assess the role of no antibiotic prophylaxis in the prevention ofwound infection in a patient undergoing elective laparoscopic cholecystectomy.Study Design and Period: The study was conducted in the Department of General Surgery at Christian Medical College,Ludhiana. This was an open labeled study conducted from the period of January 1, 2014, to December 31, 2014.Results: 92 patients suffering from chronic calculous cholecystitis undergoing elective laparoscopic cholecystectomy wereincluded in the study. Group A with 23 cases without prophylactic antibiotic. Group B with 69 cases with two doses of prophylacticantibiotics Inj. cefuroxime 1.5 gram 30 min prior to induction and after 6 h. The majority of our 81patients (88.04%) were females.The male to female ratio was 1:8. 3 patients (3.27%) in Group B had associated comorbidities except for diabetes mellitus. Themajority of patients 14 (60.86%) in Group A had taken 1-2 h of operative time while 58 patients (84.05%) patients in Group Bwith statistical insignificant P = 0.05. There was no fever in Group A patients while in Group B 2 patients (2.89%) had fever onsecond post-operative day which was not related to surgical site infection and that was due to superficial thrombophlebitis. InGroup A 18 patients (78.26%) were discharged on second postoperative days while 46 patients (66.67%) patients in Group Bwere discharged on second postoperative day. 8 patients (11.59%) in Group B were discharged on third postoperative days.There was no statistical difference in the duration of hospitalization between the two groups with P = 0.22. The overall incidenceof postoperative infective complications were nil in both groups either with patients having no prophylactic antibiotic or thosehaving prophylactic antibiotics

Changes in antimicrobial susceptibility of commonly clinically significant isolates before and after the interventions on surgical prophylactic antibiotics (SPAs) in Shanghai

Abstract Surveillances and interventions on antibiotics use have been suggested to improve serious drug-resistance worldwide. Since 2007, our hospital have proposed many measures for regulating surgical prophylactic antibiotics (carbapenems, third gen. cephalosporins, vancomycin, etc.) prescribing practices, like formulary restriction or replacement for surgical prophylactic antibiotics and timely feedback. To assess the impacts on drug-resistance after interventions, we enrolled infected patients in 2006 (pre-intervention period) and 2014 (post-intervention period) in a tertiary hospital in Shanghai. Proportions of targeted pathogens were analyzed: methicillin-resistant Staphylococcus aureus (MRSA), vancomycin-resistant Enterococcus spp. (VRE), imipenem-resistant Escherichia coli (IREC), imipenem-resistant Klebsiella pneumoniae (IRKP), imipenem-resistant Acinetobacter baumannii (IRAB) and imipenem-resistant Pseudomonas aeruginosa (IRPA) isolates. Rates of them were estimated and compared between Surgical Department, ICU and Internal Department during two periods. The total proportions of targeted isolates in Surgical Department (62.44%, 2006; 64.09%, 2014) were more than those in ICU (46.13%, 2006; 50.99%, 2014) and in Internal Department (44.54%, 2006; 51.20%, 2014). Only MRSA has decreased significantly (80.48%, 2006; 55.97%, 2014) (p < 0.0001). The percentages of VRE and IREC in 3 departments were all <15%, and the slightest change were also both observed in Surgical Department (VRE: 0.76%, 2006; 2.03%, 2014) (IREC: 2.69%, 2006; 2.63%, 2014). The interventions on surgical prophylactic antibiotics can be effective for improving resistance; antimicrobial stewardship must be combined with infection control practices.

Correlation analysis of postoperative prophylactic antibiotics and surgical site infection rates after breast cancer surgery / 中国生化药物杂志

Objective To explore the relationship between the postoperative prophylactic antibiotics and surgical site infection rates after breast cancer surgery.Methods Retrospective review of patients with breast surgical procedures between March 2007 to March 2016 were included,267 cases only preoperative antibiotic prophylaxis as control group,and 117 cases of preoperative and postoperative prophylactic antibiotics as research group.The surgical site infection( SSI) rates were compared.Results There was no statistically significant association between research groups and control group of SSI rates for both a 30-day postoperative period and beyond.Further,There was also no statistically significant association between research groups with drains and control group with drains of SSI rates for both a 30-day postoperative period and beyond.Conclusion There is no significant relationship between postoperative prophylactic antibiotics and surgical site infection rates after breast cancer surgery.

Investigation and analysis of preventive antibacterial drugs used in type Ⅰincision operation / 局解手术学杂志

Objective To analyze the situation and trend of the application of antibacterial drugs in the case of typeⅠincision operation in our hospital.Methods A total of 1 964 patients in our hospital from 2010 to 2014 were randomly selected,and the changes of antimicrobi-al drugs during the treatment period were analyzed.The surgical site infection probability and antimicrobial application rules in typeⅠincision surgery in 3 years,including probability,category,first time and duration of drug use,and the relationship between antibacterial drugs and typeⅠincision infection were analyzed.Results Application of antibacterial drugs in typeⅠincision operation probability decreased significant-ly,and the surgical infection probability decreased year by year,with statistically significant difference(P<0.05).The first application of an-tibacterial drug time was more reasonable,the choice of antimicrobial drugs were mainly one generation or two generation of Cephalosporin. There was a significant increase in the probability of stopping medication within 2 days after surgery,and the difference was statistically signif-icant(P<0.05).Conclusion The application of antibiotics should be strictly applied to the application of the indications for the use of anti-biotics.To understand the scope of application of antimicrobial drugs,and should try to shorten the use of time,control of infection during peri-operative period,reduce drug resistance.

Restricted Usage of Prophylactic Antibiotics in Extremely Low Birth Weight Infants for Early-Onset Sepsis as Quality Improvement Program

PURPOSE: The prevalence of antibiotics resistant bacterial infection among preterm infants has been increased due to indeliberate use of prophylactic broad spectrum antibiotics. The objective of this study was to assess the effectiveness of restricted usage of prophylactic antibiotics by comparing the incidence of culture proven early onset sepsis (EOS). METHODS: This was a retrospective cohort study for extremely low birth weight infants who were born in Seoul National University Children's Hospital during 2009-2014. The groups were divided into two periods, from 2009 to 2011 (period I) and from 2012 to 2014 (period II) based on the implementation on quality improvement activity since 2012. The indication of prophylactic antibiotics were; 1) umbilical vein catheter (UVC) insertion for resuscitation in delivery room, 2) prolonged preterm premature rupture of membrane >18 hours, 3) maternal fever during labor or sustained septic amniotic fluid. The incidence of EOS and the rate of empirical antibiotics usage were compared between two periods. RESULTS: A total of 245 infants were admitted to the neonatal intensive care unit during the study period. Baseline demographics and clinical characteristics were similar between two periods except UVC insertion rate. The rate of empirical antibiotics usage significantly decreased in period II (71.1% for period I vs. 56.4% for period 2, P=0.022). Incidence of EOS was not different between two periods whether prophylactic antibiotics use or not. CONCLUSION: Quality improvement for reducing prophylactic antibiotics use may be effective to reduce a use of antibiotics without increasing EOS.

Effect Evaluation of Continuing Intervention on Prophylactic Application of Antibiotics in Sterile Operation in Urology Department by Clinical Pharmacist / 中国药师

Objective:To evaluate the effect of continuing intervention on prophylactic application of antibiotics in sterile operation in urology department by clinical pharmacist to provide reference for the clinical prophylactic application of antibiotics. Methods:All cases of discharged patients underwent sterile operation in urology department of our hospital from July 2010 to June 2014 were divided into three groups according to the intervention time and methods: non-intervention group(n=141), stage Ⅰ intervention group(n=139), stage Ⅱ intervention group (n=162) and stage Ⅲ intervention group (n=137). The prophylactic application of antibiotics was statistically analyzed. Results:After the continuing intervention, the prophylactic application rate of antibiotics in the three inter-vention groups was decreased significantly from 100% before the intervention respectively to 34. 5%,18. 5% and 14. 6% after the in-tervention (P<0. 01). The rationality rate of prophylactic application was improved significantly from 36. 9% before the intervention respectively to 58. 3%, 63. 3% and 85. 0% after the intervention (P<0. 01). The course of prophylactic application was decreased significantly from (138.2 ±31.6)h respectively to (89.9 ±48.0)h,(72.8 ±32.5)h and(45.1 ±29.5)h (P<0.01) and the post-operative infection rate was decreased from 2. 8% respectively to 2. 1%,1. 8% and 1. 4%. Conclusion:The pharmaceutical interven-tion is feasible and valid to improve the rational prophylactic use of antibiotics in urological surgery.

The correlations of infection rates with the administration timing of prophylactic antibiotics after hip arthroplasty / 实用医学杂志

Objective To assess the effects of different administration timing of prophylactic antibiotics on infections after hip arthroplasty. Methods 535 patients having undergone arthroplasty were divided into two groups: the experiment group (n=273)and the control group (n=262): The former groupwere administered with antibiotics until 24 hours postoperatively and the latter until 72 hours postoperatively. The two groups were compared in terms of postoperative infection rate. Results The infection rates in the experimental groupand the control group were 4.396%and 3..817%, with insignificant differencebetween them. Conclusion For those patients undergoing hip arthroplasty, extended administration of antibiotics after operation (over 48 hours) may not reduce the risk of recent the infection rate.

Current trend of preventive antibiotic administration during the caesarean delivery / Монголын Анагаах Ухаан

Caesarean delivery is frequently complicated by surgical site infections, endometritis and urinary tractinfection. Most surgical site infections occur after discharge from the hospital and increasingly beingused as performance indicators. Worldwide, the rate of caesarean delivery is increasing. Evidencebasedguidelines recommended the use of prophylactic antibiotics before surgical incision. An exceptionis made for caesarean delivery, where narrow-range antibiotics are administered after umbilical cordclamping because of putative neonatal benefit. However, recent evidence supports the use of pre-incision,broad-spectrum antibiotics, which result in a lower rate of maternal morbidity with no disadvantage tothe neonate. The beneficial effect of prophylactic antibiotics in reducing the occurrence of infectiousmorbidity form caesarean section, whether elective or emergency is well established. A single dose offirst-generation cephalosporin is as effective as multiple doses of broad-spectrum agents. Prophylacticantibiotics for caesarean section are commonly used worldwide, and in most institutions a single dose isadministered, generally after clamping of the umbilical cord. However, a recent survey (published in 2011)of maternal and fetal medicine physicians in the USA revealed that 84% of those who responded (theresponse rate was 25%) used preoperative administration. The effectiveness of prophylactic antibioticsdepends on their presence in effective concentrations throughout the operative period. Classen et al.found that administration of prophylactic antibiotics within a 2-hour period preoperatively was associatedwith the lowest surgical wound infection rate. Because of concerns about unnecessary fetal exposure,masking of fetal infection, increases in neonatal septic work-up and the emergence of resistant strainswhen prophylactic antibiotics are given preoperatively, it is a common obstetric practice to administerprophylactic antibiotics after cord clamping.Conclusion:1. Probability for occurring wound infection happens in case of urgent caesarean delivery for patientswho have not administered by preventative antibiotic.2. It has been confirmed that preventative antibiotic administration is proper in special occasions ofcaesarean delivery for women who suffer from anaemia obesity, diabetes, or chronic inflammatorydisease prior to their delivery.3. When preventative antibiotic administration is used 60 minutes before the caesarean delivery,concentration in blood and tissue reaches up to the maximum amount.

Riesgo de sepsis neonatal temprana en recién nacidos de madre con corioamnionitis: Estudio de casos y controles / Early-onset neonatal sepsis in newborns to mother with chorioamnionitis: Case-controls study

Introducción: La corioamnionitis es común durante el embarazo y se asocia con diversas complicaciones perinatales; entre los problemas neonatales más frecuentes están: parto pretérmino, sepsis neonatal, enfermedad pulmonar crónica, lesión cerebral secundaria a infección y trastornos del desarrollo neurológico. Es necesario conocer el riesgo de sepsis neonatal temprana en recién nacidos hijos de madres con corioamnionitis, con la intención de plantear estrategias para su prevención y tratamiento. Objetivos: Determinar el grado de asociación entre la corioamnionitis materna y la aparición de sepsis neonatal temprana. Métodos: Se realizó un estudio de casos y controles donde se incluyeron 148 pacientes divididos en dos grupos: grupo I, los casos, hijos de madres con corioamnionitis (n = 74), y grupo II, control, neonatos sin antecedente de corioamnionitis materna (n = 74). Resultados: El grupo de madres con corioamnionitis tuvo menor control prenatal y sus recién nacidos, a pesar de haber recibido antibiótico profiláctico, tuvieron una mayor frecuencia de sepsis y problemas respiratorios. Conclusiones: Los hijos de madres con corioamnionitis tienen un incremento en el riesgo de presentar sepsis neonatal temprana.

Introduction: Chorioamnionitis is common during pregnancy and associated with several perinatal complications, including postpartum infection and sepsis. Among the most frequent neonatal complications associated to chorioamnionitis are: preterm delivery, neonatal sepsis, chronic lung disease, brain injury secondary to infection, and other neurodevelopmental disorders. It is necessary to know what the risk is of early-onset neonatal sepsis in newborns to mothers with chorioamnionitis. Objective: Determine whether maternal chorioamnionitis has an association with early-onset neonatal sepsis. Methods: We performed a case-control study, in which we included 148 patients divided in two groups: group I, cases (n = 74) and group II, controls (n = 74). The sample size was calculated through difference of proportions. Results: The group of mothers with chorioamnionitis had less prenatal care, and their newborns had a larger number of infections and respiratory problems despite the indication of prophylactic antibiotic schemes. Conclusions: Newborn infants to mother with chorioamnionitis have an increased risk of early neonatal sepsis, despite the use of prophylactic antibiotics.

Prophylactic Antibiotics Therapy after Splenectomy / 임상소아혈액종양

BACKGROUND: Patients who are born without spleen or who have impaired splenic function due to disease or splenectomy become vulnerable to sepsis caused by bacteria. Overwhelming post-splenectomy infection (OPSI) occurs at an estimated incidence of 0.23-0.42% per year with a lifetime risk of 5%. The risk of OPSI with encapsulated bacteria is generally considered greatest in the first 2 years after splenectomy but the increased risk remains lifelong. Because vaccination doesn't completely protect against infection with encapsulated bacteria that prevent OPSI, use of prophylactic antibiotics are recommended for prevention of infection after splenectomy. METHODS: A retrospective review of 41 patients who underwent splenectomy from January 1990 to December 2012 in Inje University Busan Paik Hospital were identified through the medical records. RESULTS: Of 41 patients, 100% (41/41) were vaccinated in pneumococcal vaccines, 27% (11/41) were vaccinated in HIB vaccines. Prophylactic antibiotics (penicillin G benzathine IM every 4 weeks) were prescribed in 73% (30/41) of patients. We could not find any septic events. CONCLUSION: Because of the high mortality, the fulminant course, and the refractoriness to common treatment of overwhelming infections caused by encapsulated bacteria, prevention through vaccination and antibiotic prophylaxis is the basis of the management of patients who have had splenectomy or have hyposplenism. Prophylactic antibiotics using Penicillin G benzathine every 4 weeks is effective for preventing septic events in splenectomized patients. But further improvement in coverage of recommended vaccines and continuous prophylactic antibiotics after splenectomy is needed to reduce the risk of serious infection.

Prophylactic Antibiotics Therapy after Splenectomy / 임상소아혈액종양

BACKGROUND: Patients who are born without spleen or who have impaired splenic function due to disease or splenectomy become vulnerable to sepsis caused by bacteria. Overwhelming post-splenectomy infection (OPSI) occurs at an estimated incidence of 0.23-0.42% per year with a lifetime risk of 5%. The risk of OPSI with encapsulated bacteria is generally considered greatest in the first 2 years after splenectomy but the increased risk remains lifelong. Because vaccination doesn't completely protect against infection with encapsulated bacteria that prevent OPSI, use of prophylactic antibiotics are recommended for prevention of infection after splenectomy. METHODS: A retrospective review of 41 patients who underwent splenectomy from January 1990 to December 2012 in Inje University Busan Paik Hospital were identified through the medical records. RESULTS: Of 41 patients, 100% (41/41) were vaccinated in pneumococcal vaccines, 27% (11/41) were vaccinated in HIB vaccines. Prophylactic antibiotics (penicillin G benzathine IM every 4 weeks) were prescribed in 73% (30/41) of patients. We could not find any septic events. CONCLUSION: Because of the high mortality, the fulminant course, and the refractoriness to common treatment of overwhelming infections caused by encapsulated bacteria, prevention through vaccination and antibiotic prophylaxis is the basis of the management of patients who have had splenectomy or have hyposplenism. Prophylactic antibiotics using Penicillin G benzathine every 4 weeks is effective for preventing septic events in splenectomized patients. But further improvement in coverage of recommended vaccines and continuous prophylactic antibiotics after splenectomy is needed to reduce the risk of serious infection.

Prophylactic Antibiotics Therapy after Splenectomy / 임상소아혈액종양

BACKGROUND: Patients who are born without spleen or who have impaired splenic function due to disease or splenectomy become vulnerable to sepsis caused by bacteria. Overwhelming post-splenectomy infection (OPSI) occurs at an estimated incidence of 0.23-0.42% per year with a lifetime risk of 5%. The risk of OPSI with encapsulated bacteria is generally considered greatest in the first 2 years after splenectomy but the increased risk remains lifelong. Because vaccination doesn't completely protect against infection with encapsulated bacteria that prevent OPSI, use of prophylactic antibiotics are recommended for prevention of infection after splenectomy.METHODS: A retrospective review of 41 patients who underwent splenectomy from January 1990 to December 2012 in Inje University Busan Paik Hospital were identified through the medical records.RESULTS: Of 41 patients, 100% (41/41) were vaccinated in pneumococcal vaccines, 27% (11/41) were vaccinated in HIB vaccines. Prophylactic antibiotics (penicillin G benzathine IM every 4 weeks) were prescribed in 73% (30/41) of patients. We could not find any septic events.CONCLUSION: Because of the high mortality, the fulminant course, and the refractoriness to common treatment of overwhelming infections caused by encapsulated bacteria, prevention through vaccination and antibiotic prophylaxis is the basis of the management of patients who have had splenectomy or have hyposplenism. Prophylactic antibiotics using Penicillin G benzathine every 4 weeks is effective for preventing septic events in splenectomized patients. But further improvement in coverage of recommended vaccines and continuous prophylactic antibiotics after splenectomy is needed to reduce the risk of serious infection.

Mechanical Bowel Preparation and Prophylactic Antibiotic Administration in Colorectal Surgery: A Survey of the Current Status in Korea

PURPOSE: The usefulness of mechanical bowel preparation (MBP) in colon surgery was recently challenged by many multicenter clinical trials and meta-analyses. The objectives of this study were to investigate current national opinions about MBP and prophylactic antibiotics (PA) and to provide preliminary data for developing future Korean guidelines for MBP and PA administration in colorectal surgery. METHODS: A questionnaire was mailed to 129 colorectal specialists. The questionnaires addressed the characteristics of the hospital, the MBP methods, and the uses of oral and intravenous antibiotics. RESULTS: A total of 73 questionnaires (56.6%) were returned. First, in regard to MBP methods, most surgeons (97.3%) used MBP for a mean of 1.36 days. Most surgeons (98.6%) implemented whole bowel irrigation and used polyethylene glycol (83.3%). Oral antibiotic use was indicated in over half (52.1%) of the responses, the average number of preoperative doses was three, and the mean time of administration was 24.2 hours prior to the operation. Finally, the majority of responders stated that they used intravenous antibiotics (95.9%). The responses demonstrated that second-generation cephalosporin-based regimens were most commonly prescribed, and 75% of the surgeons administered these regimens until three days after the operation. CONCLUSION: The results indicate that most surgeons used MBP and intravenous antibiotics and that half of them administered oral PA in colorectal surgery preparations. The study recommends that the current Korean guidelines should be adapted to adequately reflect the medical status in Korea, to consider the medical environment of the various hospitals, and to establish more accurate and relevant guidelines.

Efficacy of Prophylactic Antibiotics in Spinal Surgery

STUDY DESIGN: Retrospective comparative study. OBJECTIVES: The aim of this study was to compare the efficacy of prophylactic antibiotics in spinal surgery for the occurrence of postoperative surgical site infection (SSI) and host immune reactions depending on various administration regimens and protocols. SUMMARY OF LITERATURE REVIEW: The superiority of one regimen or protocol of prophylactic antibiotics over others for SSI in spinal surgery has not been clearly demonstrated. We designed a controlled clinical trial to compare the occurrence of SSI with the changes of hematologic results depending on prophylaxis regimens and protocols. MATERIALS AND METHODS: Between January 2007 and February 2011, two hundred consecutive patients who had undergone thoracolumbar/lumbar surgery for degenerative or traumatic disease were included. Postoperative protocol was altered for each group of fifty consecutive patients; 1st generation cephalosporins for 5-days (group A), 2nd generation cephalosporins for 5-days (group B), 1st generation cephalosporins for 3-days (group C), and 2nd generation cephalosporins for 3-days (group D). Preoperative antibiotic prophylaxis was administrated within 1 hour prior to surgical incision with the same trial antibiotics. Intraoperative bacterial culture was performed from the surgical site. The occurrences of SSI were evaluated as either incisional or organ/space SSI. Serial changes in hematologic inflammatory markers (WBC, ESR, CRP) and DIC markers (fibrinogen, FDP, D-dimer) were compared until postoperative 2 weeks. RESULTS: The study groups were homogeneous regarding age, sex, body mass index, estimated blood loss, diabetes mellitus, smoking, diagnosis, baseline laboratory values, and type of surgery including instrumentation. Overall, 13 cases of incisional SSI (6.5%) and 3 cases (1.5%) of organ/space SSI occurred. There was no difference in the occurrence of incisional and organ/space SSI among the 4 groups (P=0.690, 0.799). Laboratory results revealed that postoperative changes in hematologic inflammatory markers and DIC markers were not influenced by prophylaxis regimens and protocols (all P>0.05). CONCLUSIONS: The occurrences of SSI and host immune responses were not influenced by postoperative antibiotics regimens and protocols. Hematologic investigation revealed that host immune responses did not depend on the type of prophylactic antibiotics.

Prophylactic antibiotics in intra-oral bone grafting procedures: a prospective, randomized, double-blind clinical trial

OBJECTIVES: This study was conducted in order to assess the efficacy of 1st generation cephalosporin as use as a single-dose preoperative prophylactic antibiotic for surgical wound infections resulting from intra-oral bone grafting procedures. MATERIALS AND METHODS: A total of 23 patients who were to undergo intra-oral bone graft procedures participated in this study. After randomization, 2 grams of 1st generation cephalosporin was orally administered to both the experimental and placebo groups one hour prior to surgery in a double-blind fashion. Post-operatively, the experimental group (12 patients) was orally administered placebo three times a day for three days. The control group (11 patients) was orally administered 1st generation cephalosporin three times a day for three days. The postoperative course was observed for one month including the clinical parameters associated with infection. RESULTS: Postoperative infections were noted in 1 out of 11 patients in the experimental group. No infections occurred in the control group. CONCLUSION: There was no significant difference in the incidence of postoperative infections between the two groups. Two grams of 1st generation cephalosporin administered orally one hour before surgery served as an effective prophylactic antibiotics therapy for intra-oral bone graft surgery

Effects of prophylactic antibiotics administration on colonized microorganisms of thoracic catheter in pneumothorax patients treated with closed thoracic drainage / 中华急诊医学杂志

Objective To investigate the feature of the microorganisms colonization of the thoracic catheter-related infection and evaluate the clinical significance of prophylactic antibiotics administration in patients with pneumothorax treated with closed thoracic drainage. Method A total of 120 patients with pneumothorax treated with closed thoracic dramage in emergency department wore enrolled. The patients were randomized (random number) into group A (n =60) and group B (n =60). In group A, the patients received levofloxacin mesylate injection and in group B, patients received physiological saline injection instead after closed thoracic drainage. The tip of catheter was cut off to get a 2-cm long segment after catheter removal and this segment was dipped into a bottle filled with liquid culture medium for microorganism culture. Statistical analysis carried out by using χ2 test or Fisher exact test. Results Of all 120 patients, microorganisms were found in 49 segments of catheter and 57 strains of microorganisms were found. The four most common microorganisms were Coagulase-negative staphylococci (57.9%), Candida albicans (10. 5%),Staphylococcus aureus (7%) and Acinetobacter baumanii (7%). All of them were highly drug-resistant to β-1actam antibiotics. The difference in the positive rate of microorganism culture was distinct in pneumothorax patients with underlying diseases (50%) in comparison to the patients without underlying diseases (31%) (P ＜ 0.05). The positive rate of microorganism culture increased significantly as the duration of drainage was longer than 14 days (P ＜ 0.01). The positive rate of culture in group A was lower than that in group B if the duration of drainage was less than 7 days (8.3% vs 52.9%, P ＜ 0.01). The positive rate of culture after drainage for 7 days was 21.4% in group A and 68.8% in group B (P ＜0.05), and that after drainage for over 14 days was 70% in both groups (P ＞ 0.05). There were no significant differences in outcome and days of hospital stay between two groups (P ＞ 0. 05). Conclusions The common colonized microorganisms of thoracic catheter-related infection are conditional pathogens and highly resistant to antibiotics. Lengthening the duration of drainage and having underlying diseases increase the risk of infection. Although prophylactic antibiotics administration is beneficial to decrease the risk of thoracic catheter-related infection, it has no effects on shortening hospital stay and outcome of disease.

Prophylactic antibiotics in severe acute pancreatitis: a meta-analysis / 中华肝胆外科杂志

Objective To carry out a meta-analysis on the published data in order to evaluate the clinical efficacy of prophylactic antibiotics in severe acute pancreatitis (SAP). Methods We searched the MEDLINE, EMBASE, Cochrane data base for systematic reviews and China biological medicine for randomized controlled trials on the efficacy of prophylactic antibiotics in patients with SAP from 1975 to May 2010. Eight studies met the inclusion criteria. Two authors independently extracted the data from these studies. The data were analyzed using the RevMan 4. 2. 10 software. Result In patients with SAP, prophylactic antibiotics did not reduce pancreatic infection (OR = 0. 67,95% CI:0. 43～1. 02,P = 0. 06), surgical intervention (OR = 0. 90,95% CI: 0. 60～ 1. 36 ,P = 0. 63) and mortality rate (OR = 0. 69,95% CI: 0. 41～1. 15,P=0. 16). Conclusion Antibiotic prophylaxis of SAP did not reduce mortality. It did not protect against pancreatic infection and the frequency of surgical intervention.