PURPOSE: To report two cases of trabeculectomy with biodegradable collagen material conducted on two post-vitrectomy patients. CASE SUMMARY: The first patient was a 43-year-old woman with uncontrolled increased intraocular pressure (IOP) after pars plana vitrectomy with scleral buckling for diabetic retinopathy and vitreous hemorrhage. Another patient, a 28-year-old woman with aphakia, also had uncontrolled increased IOP after pars plana vitrectomy with encircling scleral buckling for retinal detachment. For both of these patients, we performed trabeculectomy using mitomycin C and recently developed biodegradable collagen matrix. In the first case, the IOP was increased three months after the surgery, for which needling was done. After needling, the IOP was well controlled in the range of 16 to 19 mmHg up to eight months postoperatively with stilling anti-glaucomatous eyedrops (Cosopt(R), Xalatan(R)). In the second case, IOPwas increased one week after the surgery, but it was well controlled between 14 to 21 mmHg up to nine months postoperatively with anti-glaucomatous eye drops (Combigan(R)). CONCLUSIONS: Biodegradable collagen matrix can possibly reduce the surgical failure of trabeculectomy and it is especially suitable for high risk patients when combined with anti-metabolic agents like MMC.
Adult ; Aphakia ; Collagen ; Diabetic Retinopathy ; Female ; Humans ; Intraocular Pressure ; Mitomycin ; Ophthalmic Solutions ; Retinal Detachment ; Scleral Buckling ; Trabeculectomy ; Vitrectomy ; Vitreous Hemorrhage ; Wound Healing

PURPOSE: Recently, biodegradable collagen matrix has been used as a possible substitute for anti-metabolite in trabeculectomy in order to control the responsiveness of the wound healing process. This paper reports a case of encapsulation of the biodegradable collagen matrix after trabeculectomy. CASE SUMMARY: We conducted a fornix-based trabeculectomy on a 58-year-old man with medically uncontrollable steroid-induced glaucoma. We implanted biodegradable collagen matrix onto the sclera flap beneath the conjunctiva. Immediately after the surgery, we observed a localized bleb with high elevation. In the three months of follow-up, the bleb became encapsulated, and an increase in intraocular pressure was noted. During the wound revision, encapsulated material surrounded by thick fibrous membrane was found and removed from the subconjunctival space, followed by biopsy. Biopsy results demonstrated that amorphous collagenous material was surrounded by spindle and inflammatory cells. CONCLUSIONS: It is important to note that the fibrous encapsulation of collagen material is a possible complication of biodegradable collagen matrix-augmented trabeculectomy.
Biopsy ; Blister ; Collagen ; Conjunctiva ; Follow-Up Studies ; Glaucoma ; Glycosaminoglycans ; Humans ; Intraocular Pressure ; Membranes ; Middle Aged ; Sclera ; Trabeculectomy ; Wound Healing

Rivaroxaban, a factor Xa inhibitor, is one of the newly developed direct oral anticoagulants (DOAC). In recent times, it has been increasingly used in the prevention of pulmonary embolism in patients undergoing orthopedic surgery. This report describes a case of epidural hematoma in an elderly patient who underwent combined spinal epidural anesthesia for total knee arthroplasty; the patient received rivaroxaban postoperatively for 7 days to prevent pulmonary embolism. Additionally, the epidural hematomas developed on the 5th postoperative day but the patient recovered well with conservative treatment. Although rivaroxaban has a low need for monitoring and is easily administered, the guidelines should be carefully checked for the postoperative administration schedule in patients undergoing regional anesthesia. In addition, rivaroxaban should be used with caution, especially in elderly patients.
Aged ; Anesthesia, Conduction ; Anesthesia, Epidural ; Anticoagulants ; Appointments and Schedules ; Arthroplasty, Replacement, Knee* ; Factor Xa ; Hematoma* ; Hematoma, Epidural, Spinal ; Humans ; Orthopedics ; Pulmonary Embolism ; Rivaroxaban*

Although spinal anesthesia is one of the most reliable anesthetic techniques in clinical practice, failures may occur in daily practice at rare occasions. Their causes are diverse and they include anatomical structural variations. In particular, postoperative anatomical changes often occur in patients who have undergone spine surgery and may cause failures of spinal anesthesia. Postoperative pseudomeningocele constitutes extradural cerebrospinal fluid collected from a dural tear and it is considered a very rare complication of spine surgery. We describe the case where a patient with unexpected postoperative iatrogenic pseudomeningocele received lower extremity surgery under spinal anesthesia.
Anesthesia, Spinal ; Cerebrospinal Fluid ; Humans ; Lower Extremity ; Spine ; Tears

In November 2021, 14 international travel-related severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) B.1.1.529 (omicron) variant of concern (VOC) patients were detected in South Korea. Epidemiologic investigation revealed community transmission of the omicron VOC. A total of 80 SARS-CoV-2 omicron VOC-positive patients were identified until December 10, 2021 and 66 of them reported no relation to the international travel.There may be more transmissions with this VOC in Korea than reported.