Ocular toxicity after inadvertent overdose of intracameral cefuroxime during cataract surgery.

PURPOSE: To describe intracameral toxic effects of cefuroxime at a higher dose than recommended in cataract surgery. METHODS: Retrospective study of 8 eyes of 8 patients who inadvertently received 12.5 mg/0.1 ml of intracameral cefuroxime due to a dilution error, at the end of the cataract surgery. All patients underwent a strict ophthalmology follow-up for 6 months. RESULTS: All patients presented with a marked anterior segment inflammation with corneal oedema that resolved completely in all cases (between 5 days and 3 months). At 6 months of follow-up a statistically significant difference was found in the corneal endothelial cell density when compared with the fellow eye (P = .038), being <1000 cells/mm2 in 3 cases. Three patients (37.5%) showed early macular oedema, with subfoveal ellipsoid layer disruption in one case as a permanent sequel. One patient developed an optic neuropathy with associated afferent pupillary defect. CONCLUSIONS: Although 1 mg/0.1 ml of intracameral cefuroxime has been shown to reduce the incidence of endophthalmitis, its overdose can have potentially toxic eye effects in both anterior and posterior segments.

Macular Edema and Serous Macular Detachment after a Standard Dose of Intracameral Cefuroxime.

Intracameral cefuroxime has been associated with postoperative macular edema and sub-retinal fluid. To date, nearly all published cases are attributed to errors in antibiotic dilution, leading to administration of supratherapeutic doses. We report three cases of postoperative macular edema and subretinal fluid following a standard dose of 1 mg/0.1 mL of cefuroxime at the end of cataract surgery. Distinguishing features of these cases were intraoperative zonular instability and history of vitrectomy. We hypothesize that certain factors may increase the risk of cefuroxime-associated retinal toxicity, including history of vitrectomy, zonular compromise, posterior capsular break, surgery for a secondary intraocular lens, and unicameral state. [Ophthalmic Surg Lasers Imaging Retina. 2021;52:615-618.].

Effect of Intracameral Cefuroxime on Graft Endothelial Cells in Descemet Membrane Endothelial Keratoplasty: A Comparative Study.

Purpose: To evaluate the effect of intracameral cefuroxime on graft endothelial cell loss after simple Descemet Membrane Endothelial Keratoplasty (DMEK) and combined DMEK and cataract surgery.Materials and Methods: Single-center retrospective comparative analysis. One hundred and three patients were included, 31 in the cefuroxime group and 72 in the non-cefuroxime (NC) group. Best Spectacle-Corrected Visual Acuity (BSCVA), endothelial cell density (ECD) of the graft measured by specular microscopy, and the recipient's pachymetry were recorded pre-operatively and at 1, 3, and 6 months after surgery.Results: In the cefuroxime group, BSCVA was 0.22 ± 0.27 LogMAR, 0.15 ± 0.24 LogMAR and 0.07 ± 0.22, respectively, at 1, 3, and 6 months after surgery with no significant differences found when compared to the NC group (p > .05). Anatomical outcomes were similar as mean pachymetry decreased from 599 ± 51 µm preoperatively to 511 ± 30 µm at 6 months after surgery in the cefuroxime group and from 607 ± 67 µm preoperatively to 519 ± 32 µm at 6 months in the NC group (p = .25). Endothelial cell loss was comparable between both groups: 33.4% versus 33.6% at 1 month (p = .97), 37.4% versus 34.9% at 3 months (p = .68) and 41.6% versus 38.3% at 6 months (p = .42) in the cefuroxime and NC groups, respectively. The rates of rebubbling, graft rejection, and cystoid macular edema were not significantly higher in the cefuroxime group.Conclusion: The use of intracameral cefuroxime during simple or combined DMEK did not lead to higher graft endothelial cell loss.

Safety of intracameral cefuroxime in pars plana vitrectomy.

BACKGROUND/OBJECTIVES: Postoperative endophthalmitis is a rare, but serious complication of pars plana vitrectomy (PPV). Subconjunctival cefuroxime injection has been the traditional choice for post vitrectomy endophthalmitis prophylaxis. Its effectiveness and safety in this context are however poorly understood and cases of retinal toxicity have been reported. The traditional standard subconjunctival antibiotic prophylaxis has been superceded in cataract surgery by intracameral antibiotic prophylaxis. SUBJECTS/METHODS: The primary aim of this three centre non-randomised retrospective database cohort study of 7,532 PPV procedures was to identify the rate of endophthalmitis in cohorts of patients treated with intracameral or subconjunctival cefuroxime. A secondary aim was to estimate the achieved intraocular antibiotic concentrations of cefuroxime in eyes with intracameral versus subconjunctival administration using mathematical modelling. RESULTS: The overall incidence of postoperative endophthalmitis was 0.07% (5/7532). There were no cases of endophthalmitis in eyes receiving intracameral cefuroxime alone or in combination with subconjunctival cefuroxime (0/5586). Patients receiving subconjunctival cefuroxime alone had a higher incidence of endophthalmitis (0.22%, 4/1835), and there was one case of endophthalmitis in eyes not receiving any perioperative antibiotics (0.9%, 1/111). No cases of cefuroxime toxicity were identified. With subconjunctival cefuroxime, in the presence of a sclerotomy leak, we estimated the vitreous drug concentration to be higher than that for intracameral cefuroxime and potentially toxic. CONCLUSIONS: Intracameral cefuroxime appears to be a safe and efficient choice for prophylaxis against endophthalmitis after PPV. Small eyes with intraocular tamponade seem to be at particular risk of drug toxicity if cefuroxime is administered via the subconjunctival route.

Toxicities of and inflammatory responses to moxifloxacin, cefuroxime, and vancomycin on retinal vascular cells.

Prophylactic intracameral injection of antibiotics is commonly used to prevent endophthalmitis after cataract surgery. However, devastating visual complications have been reported including hemorrhagic occlusive retinal vasculitis (HORV).To determine the toxic and inflammatory effects of moxifloxacin, cefuroxime, and vancomycin on human retinal vascular cells, human retinal vascular endothelial cells (RVEC) and pericytes were exposed to three antibiotics, and the adverse effects were assessed by membrane damage, loss of intrinsic esterase activity, kinetic cell viability, and inflammatory cytokine secretion. Their retinal toxicity was examined by live/dead assays after an intravitreal injection of the three antibiotics into mice eyes. In vascular cells in culture, membrane damage and loss of esterase activity were induced after exposure to the three antibiotics. The toxic effects were most obvious after moxifloxacin (RVEC, ≥125 µg/mL; pericytes, ≥1000 µg/mL) at 24 h. Cefuroxime also reduced esterase activity and the membrane integrity of vascular cells but were less toxic than moxifloxacin. Kinetic cell viability testing showed that 500 µg/mL of moxifloxacin exposure induced significant decrease (29%) in the viability as early as 1 h. When the inflammatory effects of the antibiotics were examined, a significant induction of IL-8 was observed especially by RVECs after exposure to cefuroxime or vancomycin which was exacerbated by L-alanyl-γ-D-glutamyl-meso-diaminopimelic acid (Tri-DAP), a NOD1 ligand. Intravitreal injections in mice showed that cefuroxime and vancomycin caused retinal and vascular toxicity extending to the inner nuclear layers. Collectively, moxifloxacin causes immediate damage to retinal vascular cells in vitro, while cefuroxime and vancomycin induced significant inflammatory effects on vascular endothelial cells and caused retinal toxicity. Surgeons need to be cautious of the toxicity when antibiotics are used prophylactically especially by intravitreal administration.

OCULAR TOXICITY AFTER INADVERTENT INTRACAMERAL INJECTION OF HIGH DOSE OF CEFUROXIME DURING CATARACT SURGERY: A CASE SERIES.

PURPOSE: To report ocular side effects after inadvertent intracameral injection of a high dose of cefuroxime. METHODS: Nineteen eyes of 19 patients were seen in our eye department 1 week after the referring surgeon had injected an erroneous dose of intracameral cefuroxime (12.5 mg/0.1 mL in 14 patients, Group A, and 10 mg/0.1 mL in 5 patients, Group B) at the end of a cataract surgery. A complete ophthalmic examination was performed postoperatively. RESULTS: Eight patients (42.10%) exhibited ocular side effects. One patient (Group A) developed a noninfectious panuveitis. One case (Group B) had a serous macular detachment. Five patients (4 from Group A and 1 from Group B) showed a disruption of the ellipsoid layer with temporary/permanent drop in visual acuity. One patient presented with color alteration (Group A), but electrodiagnostic studies did not reveal any significant alterations. CONCLUSION: Anterior and posterior inflammation has been described after intracameral injection of high dose of cefuroxime. In this study, 10 mg to 12.5 mg of intracameral cefuroxime is shown to be, principally, toxic to the retina with transient or permanent retinal changes on optical coherence tomography which correlate with visual outcomes postoperatively. Protocols to avoid dilution errors should be available in theaters during cataract surgery where such commercial preparations are not available.

Cefuroxime-associated Kounis syndrome with unique peculiarity in perioperative prophylaxis.

Cefuroxime is a broad spectrum antibacterial agent administered in cases of perioperative prophylaxis. Kounis syndrome is defined as the concurrence of anaphylactic events with acute coronary syndromes. Limited data is available for cefuroxime-associated Kounis syndrome in perioperative prophylaxis. We report the case of a 37-year-old woman undergoing bilateral sweat gland resection who presented with Kounis syndrome following cefuroxime infusion for perioperative prophylaxis. The patient had severe symptoms and unique manifestations that never been reported before: pink frothy sputum indicating heart failure, due to severe systolic dysfunction requiring invasive ventilation and intra-aortic balloon counter-pulsation. Cefuroxime-associated Kounis syndrome has several unique and life-threatening peculiarities which broaden our understanding of clinical and laboratory characteristics. It is important for physicians to be aware of possible cardiovascular complications in perioperative cefuroxime prophylaxis.

Toxic retinopathy after phacoemulsification when the cefuroxime dilution is correct.

PURPOSE: To determine the clinical characteristics and outcomes of patients with toxic retinopathy after phacoemulsification and intraocular lens implantation when the correct cefuroxime dilution is administered. SETTING: State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China. DESIGN: Prospective case series. METHODS: Patients developing toxic retinopathy after phacoemulsification between January 2016 and April 2017 were observed. All patients received an anterior chamber injection of correctly diluted cefuroxime at the end of the surgery. RESULTS: The study evaluated 20 patients (20 eyes). At the 1-day follow-up, the mean logarithm of the minimum angle of resolution (logMAR) corrected distance visual acuity (CDVA) decreased to 0.78 logMAR ± 0.31 (SD) with no significant difference compared with the preoperative CDVA of 0.71 ± 0.34 logMAR (P = .535). Spectral-domain optical coherence tomography (SD-OCT) showed cystoid macular edema (CME) with extensive serous neurosensory retinal detachment (RD) at the posterior pole. At the 1-week follow-up, the mean CDVA improved to 0.13 ± 0.80 logMAR and the improvement was significant compared with the preoperative and 1-day postoperative logMAR CDVA (P < .001). The SD-OCT showed regression of CME and recovery of RD. CONCLUSIONS: When the drug dilution is correct, there is still a possibility of sporadic cefuroxime toxic maculopathy after intracameral injection of cefuroxime. This toxicity might be related to transient retinal pigment epithelium sodium-potassium pump dysfunction resulting from a large injection volume of a standard dose concentration or individual differences in conventional drug dose tolerance.

Development of Retinal Infarct Due to Intracameral Cefuroxime Injection Following Complicated Cataract Surgery

We present the case of a 60-year-old patient who underwent a complicated cataract surgery with cefuroxime injection (1 mg/0.1 mL) into the anterior chamber at the end of surgery. The patient presented to our hospital due to decrease in visual acuity (VA) after surgery. VA was counting fingers (CF) from 4 meters. There was extensive retinal hemorrhages and edema in addition to retinal vascular leakage detected with fluorescein angiography (FA). After negative microbiologic tests, the patient was treated with intravenous pulse and oral corticosteroids. Rheumatologic investigation was also negative. At month 5, VA was CF from 1 meter in addition to disseminated capillary loss in FA and optic nerve atrophy despite corticosteroid treatment. The patient developed retinal infarction due to cefuroxime injection following a complicated cataract surgery. Surgeons and surgical staff should be aware of the possibility of retinal toxicity while using cefuroxime, particularly in complicated cases.

Adverse reactions to two intravenous antibiotics (Augmentin and Zinacef) used for surgical prophylaxis in dogs.

Antibiotic prophylaxis in dogs undergoing surgical procedures frequently involves the administration of a product without a veterinary licence. Two drugs commonly used for this purpose are the clavulanate amoxicillin Augmentin and the cefuroxime Zinacef. This prospective observational study aims to compare the incidence of adverse events associated with these two antibiotics in a clinical setting. The authors hypothesised that a higher incidence of adverse effects would be observed with Augmentin. Sixty-five dogs were included in the study and adverse events were recorded using a modified scoring system. A significantly higher incidence of adverse events to Augmentin (8/22; 36 per cent) was observed compared with Zinacef (1/43; 2 per cent) (P=0.0003). The majority of these adverse events involved cutaneous signs and/or hypotension. These findings might be taken into consideration when selecting one of these intravenous antibiotics for prophylaxis in anaesthetised dogs undergoing surgery.

The Importance of Perioperative Prophylaxis with Cefuroxime or Ceftriaxone in the Surgical Site Infections Prevention after Cranial and Spinal Neurosurgical Procedures.

Introduction Surgical site infections pose a significant problem in the treatment of neurosurgical procedures, regardless of the application of perioperative prophylaxis with systemic antibiotics. The infection rate in these procedures ranges from less than 1% to above 15%. Different antibiotics and administration regimes have been used in the perioperative prophylaxis so far, and there are numerous comparative studies regarding their efficiency, however, it is generally indicated that the choice thereof should be based on information and local specifics connected to the most probable bacterial causers, which would possibly contaminate the surgical site and cause infection, and moreover, the mandatory compliance with the principles of providing adequate concentration of the drug at the time of the anticipated contamination. Objective Comparing the protective effect of two perioperative prophylactic antibiotic regimes using cefuroxime (second generation cephalosporin) and ceftriaxone (third generation cephalosporin) in the prevention of postoperative surgical site infections after elective and urgent cranial and spinal neurosurgical procedures at the University Clinic for Neurosurgery in Skopje in the period of the first three months of 2016. Design of the study Prospective randomized comparative study. Outcome measures Establishing the clinical outcome represented as prevalence of superficial and deep incision and organ/space postoperative surgical site infections. Material and method We analyzed prospectively 40 patients who received parenteral antibiotic prophylaxis with two antibiotic regimes one hour before the routine neurosurgical cranial and spinal surgical procedures; the patients were randomized in two groups, according to the order of admission and participation in the study, alternately, non-selectively, those persons who fulfilled inclusion criteria were placed in one of the two programmed regimes with cefuroxime in the first, and cefotaxime in the second compared group. All relevant demographic and perioperative patient data were analyzed for both comparative groups, especially the factors known to cause disposition (predisposition) to infections. The prevalence of postoperative infections was evaluated as the primary outcome in both comparative groups, while the secondary outcome was the postoperative infection rate after cranial and spinal neurosurgical procedures at the Neurosurgical clinic in Skopje (having in consideration that so far no data have been published in this context), as well as the prevalence of the risk factors for occurrence of postoperative infections, pre-surgically in patients undergoing neurosurgical interventions locally in the Republic of Macedonia. Results A total of three cases of postoperative infections were registered, two of which classified as superficial incisional, while one case organ/space infection - meningitis (elective intervention) without etiological confirmation. Both comparative groups were statistically similar, without any statistically significant differences in the basic demographic and perioperative characteristics, especially in relation to the incidence of the factors, which, regardless of the antibiotic prophylaxis, show predisposition to postoperative infections. All three cases with infections were registered in the group of persons who received prophylaxis with ceftriaxone preoperatively, with isolated etiological S. aureus agent (elective intervention) in one of them, and methicillin resistant staphylococcus aureus (MRSA) in another (urgent intervention) with superficial incisional SSI. There was no case of SSI in the group of patients who received cefuroxime before surgery. Conclusion Administration of parenteral antibiotics before surgery reduces the incidence of postoperative infections after neurosurgical procedures, especially in cases with increased risk factors for SSI, such as ACA score of ≥ 2/3, the duration of the surgical intervention ≥ 4 hours, contaminated wound and comorbidities. Perioperative antibiotic prophylaxis should be directed to better coverage of the S.aureus arrays.

Perianesthetic refractory anaphylactic shock with cefuroxime in a patient with history of penicillin allergy on multiple antihypertensive medications / Choque anafilático refratário perianestésico com cefuroxima em paciente com história de alergia à penicilina recebendo vários medicamentos anti-hipertensivos

Abstract We report a case of perianesthetic refractory anaphylactic shock with cefuroxime in a patient with history of penicillin allergy on regular therapy with atenolol, losartan, prazosin and nicardipine. Severe anaphylactic shock was only transiently responsive to 10 mL of (1:10,000) epinephrine and needed norepinephrine and dopamine infusion. Supportive therapy with vasopressors and inotropes along with mechanical ventilation for the next 24 hours resulted in complete recovery. She was successfully operated upon 2 weeks later with the same anesthetic drugs but intravenous ciprofloxacin as the alternative antibiotic for perioperative prophylaxis.

Resumo Relatamos um caso de choque anafilático refratário no período perianestésico com cefuroxima em paciente com história de alergia à penicilina em terapia regular com atenolol, losartan, prazosina e nicardipine. O choque anafilático grave foi apenas transitoriamente responsivo a 10 mL de epinefrina (1:10000) e precisou de infusão de norepinefrina e dopamina. A terapia de apoio com vasopressores e inotrópicos, juntamente com ventilação mecânica por 24 horas, resultou em recuperação completa. A paciente foi operada com sucesso duas semanas mais tarde, com os mesmos agentes anestésicos, mas com ciprofloxacina intravenosa como antibiótico opcional para a profilaxia perioperatória.

Safety Profile of Stromal Hydration of Clear Corneal Incisions with Cefuroxime in the Mouse Model.

PURPOSE: The use of sutureless clear corneal incisions (CCIs) for phacoemulsification is an established surgical technique, but the dynamic morphology of the wound and poor construction can lead to an increased risk of postoperative endophthalmitis. Stromal hydration with balanced salt solution (BSS) can improve the self-sealing status. Intracameral cefuroxime has reduced endophthalmitis rates. This study investigates the safety profile of stromal hydration with cefuroxime, as sequestering antibiotic at the wound may potentially provide added protection against infection. METHODS: MF-1 mice underwent bilateral CCI, followed by stromal hydration with 5 µL of 10 mg/mL cefuroxime, cefuroxime-texas red conjugate (for detection using confocal microscopy), or BSS. Corneas were harvested from 1 h to 12 weeks postoperatively; gross morphology, histology, and apoptotic cell death levels were investigated to determine the safety profile. Bactericidal activity of cefuroxime was assayed using homogenized whole cornea following stromal hydration at 1 h, 24 h, and day 7 against gram-negative Escherichia coli. RESULTS: Cefuroxime stromal hydration did not alter corneal morphology, with no evidence of corneal scarring or vascularization. Corneal histology and levels of apoptosis were minimal and comparable to the BSS groups up to 12 weeks. Confocal microscopy detected cefuroxime-texas red up to 1 week surrounding the corneal wound. Whole corneal tissue homogenates displayed bactericidal activity up to 24 h postoperatively. CONCLUSIONS: Stromal hydration of CCI with cefuroxime is safe in mouse corneas. A reservoir of antibiotic at the wound can potentially act as a barrier of defense against infection following cataract and associated ocular surgery.