1.Reduction in proteinuria after immunosuppressive therapy and long-term kidney outcomes in patients with immunoglobulin A nephropathy
Shin Chan KANG ; Hyung Woo KIM ; Tae Ik CHANG ; Ea Wha KANG ; Beom Jin LIM ; Jung Tak PARK ; Tae-Hyun YOO ; Hyeon Joo JEONG ; Shin-Wook KANG ; Seung Hyeok HAN
The Korean Journal of Internal Medicine 2021;36(5):1169-1180
Background/Aims:
Despite controversy regarding the benefits of immunosuppressive therapy in immunoglobulin A nephropathy (IgAN), clinical outcomes may vary depending on the patient’s responsiveness to this therapy. This study evaluated long-term kidney outcomes according to the extent of proteinuria reduction after immunosuppression in IgAN patients.
Methods:
Among 927 patients with biopsy-proven IgAN, 127 patients underwent immunosuppression. Time-averaged urine protein-creatinine ratio before and within 1 year after start of immunosuppression were calculated, and responsiveness to immunosuppression was assessed as the reduction of proteinuria between the two periods. Patients were classified into tertiles according to the extent of proteinuria reduction. We compared the slopes of estimated glomerular filtration rate (eGFR) decline using a linear mixed model, and estimated hazard ratios (HRs) for disease progression (defined as development of a ≥ 30% decline in eGFR or end-stage renal disease) using a Cox proportional hazard model.
Results:
Median extent of proteinuria reduction was –2.1, –0.9, and –0.2 g/gCr in the first, second, and third tertiles, respectively. There were concomitant changes in the slopes of annual eGFR decline: –2.03, –2.44, and –4.62 mL/min/1.73 m2 among the first, second, and third tertiles, respectively. In multivariable Cox analysis, the HRs (95% confidence intervals) for disease progression were 0.30 (0.12 to 0.74) in the first tertile and 0.70 (0.34 to 1.45) in the second tertile compared with the thirdtertile.
Conclusions
This study showed that greater proteinuria reduction after immunosuppression was associated with a lower risk of disease progression in patients with IgAN, suggesting that responsiveness to immunosuppression may be an important determinant of kidney outcomes.
2.Reduction in proteinuria after immunosuppressive therapy and long-term kidney outcomes in patients with immunoglobulin A nephropathy
Shin Chan KANG ; Hyung Woo KIM ; Tae Ik CHANG ; Ea Wha KANG ; Beom Jin LIM ; Jung Tak PARK ; Tae-Hyun YOO ; Hyeon Joo JEONG ; Shin-Wook KANG ; Seung Hyeok HAN
The Korean Journal of Internal Medicine 2021;36(5):1169-1180
Background/Aims:
Despite controversy regarding the benefits of immunosuppressive therapy in immunoglobulin A nephropathy (IgAN), clinical outcomes may vary depending on the patient’s responsiveness to this therapy. This study evaluated long-term kidney outcomes according to the extent of proteinuria reduction after immunosuppression in IgAN patients.
Methods:
Among 927 patients with biopsy-proven IgAN, 127 patients underwent immunosuppression. Time-averaged urine protein-creatinine ratio before and within 1 year after start of immunosuppression were calculated, and responsiveness to immunosuppression was assessed as the reduction of proteinuria between the two periods. Patients were classified into tertiles according to the extent of proteinuria reduction. We compared the slopes of estimated glomerular filtration rate (eGFR) decline using a linear mixed model, and estimated hazard ratios (HRs) for disease progression (defined as development of a ≥ 30% decline in eGFR or end-stage renal disease) using a Cox proportional hazard model.
Results:
Median extent of proteinuria reduction was –2.1, –0.9, and –0.2 g/gCr in the first, second, and third tertiles, respectively. There were concomitant changes in the slopes of annual eGFR decline: –2.03, –2.44, and –4.62 mL/min/1.73 m2 among the first, second, and third tertiles, respectively. In multivariable Cox analysis, the HRs (95% confidence intervals) for disease progression were 0.30 (0.12 to 0.74) in the first tertile and 0.70 (0.34 to 1.45) in the second tertile compared with the thirdtertile.
Conclusions
This study showed that greater proteinuria reduction after immunosuppression was associated with a lower risk of disease progression in patients with IgAN, suggesting that responsiveness to immunosuppression may be an important determinant of kidney outcomes.
3.Early cicatricial lagophthalmos release with pentagonal wedge resection of the scar, fat redistribution, and full-thickness skin grafting
Chan Min CHUNG ; Seung Wan TAK ; Hyoseob LIM ; Sang-Hun CHO ; Jong Wook LEE
Archives of Craniofacial Surgery 2020;21(1):49-52
The specialized structure of the upper eyelid ensures complete closure of the eye and eyeball sealing. An upper eyelid injury can cause various symptoms associated with eyeball trauma, not just scar formation or eyelid deformity. In this report, we describe a case of lagophthalmos observed after wound repair in a patient with a crushing injury caused by a grinder. Several surgical techniques are used to treat lagophthalmos or scar contracture. In most cases, a releasing procedure is performed after 6 months of initial repair. However, if the patient has severe symptoms that are not relieved by conservative care, early revision is inevitable. We describe a case of early lagophthalmos successfully resolved with pentagonal wedge resection, fat redistribution, and full-thickness skin grafting. After the revisional surgery, we observed that the patient regained the ability to completely close the injured eyelid, with restoration of function and favorable cosmetic outcomes. Pentagonal wedge resection to release a retracted structure, fat redistribution to prevent readhesion, and full-thickness skin grafting for enough amount of skin to regain upper eyelid function is useful for scar release and lagophthalmos following crushing injuries of the upper eyelid.
4.A retrospective computed tomography analysis of maxillary fractures and the clinical outcomes of their unreduced parts
Chan Min CHUNG ; Seung Wan TAK ; Hyoseob LIM ; Sang Hun CHO ; Jong Wook LEE
Archives of Craniofacial Surgery 2019;20(6):370-375
BACKGROUND: Some parts of a maxillary fracture—for example, the medial and posterior walls—may remain unreduced because they are unapproachable or hard to deal with. This study aimed to investigate the self-healing process of unreduced maxillary membranous parts of fractures through a longitudinal computed tomography (CT) analysis of cases of unilateral facial bone injuries involving the maxillary sinus walls.METHODS: Thirty-two patients who had undergone unilateral facial bone reduction surgery involving the maxillary sinus walls without reduction of the medial and posterior walls were analyzed in this retrospective chart review. Preoperative, immediate postoperative, and 3-month postoperative CT scans were analyzed. The maxillary sinus volume was calculated and improvements in bone continuity and alignment were evaluated.RESULTS: The volume of the traumatized maxillary sinuses increased after surgery, and expanded significantly by 3 months postoperatively (p< 0.05). The significant preoperative volume difference between the normal and traumatized sides (p= 0.024) resolved after surgery (p> 0.05), and this resolution was maintained at 3 months postoperatively (p > 0.05). The unreduced parts of the maxillary bone showed improved alignment and continuity (in 75.0% and 90.6% of cases, respectively), and improvements in bone alignment and bone continuity were found to be correlated using the Pearson chi-square test (p= 0.002).CONCLUSION: Maxillary wall remodeling through self-healing occurred concomitantly with an increase in sinus volume and simultaneous improvements in bone alignment and continuity. Midfacial surgeons should be aware of the natural course of unreduced fractured medial and posterior maxillary walls in complex maxillary fractures.
Facial Bones
;
Fracture Healing
;
Fractures, Bone
;
Humans
;
Maxilla
;
Maxillary Fractures
;
Maxillary Sinus
;
Periosteum
;
Retrospective Studies
;
Surgeons
;
Tomography, X-Ray Computed
5.Congenital cutaneous pedicled macrocystic lymphatic malformation on the upper extremity: A rare case report and review of the literature
Chan Min CHUNG ; Seung Wan TAK ; Hyoseob LIM ; Sang Hun CHO
Archives of Aesthetic Plastic Surgery 2019;25(4):163-166
Congenital cystic lymphatic malformations on the extremities are very rare. The patient described in this case study presented with a cutaneous and pedicled macrocystic lymphatic malformation that was eliminated by electrocauterization. A 4-day-old female infant with a congenital cutaneous mass on the dorsal area of her left first metacarpophalangeal joint presented to an outpatient clinic. An electrocautery device was used to cut the pedicle gently with minimal bleeding to avoid mass rupture and to minimize morbidity. A simple wet dressing was applied for 1 week, and the wound subsequently healed completely. Cutaneous macrocystic lymphatic malformations are very rare, especially on the extremities, and no consensus exists on their treatment, which has not been previously described. This report presents this rare case, along with a review of the literature.
Ambulatory Care Facilities
;
Bandages
;
Consensus
;
Electrocoagulation
;
Extremities
;
Female
;
Hemorrhage
;
Humans
;
Infant
;
Lymphatic Abnormalities
;
Lymphocele
;
Metacarpophalangeal Joint
;
Rupture
;
Skin Neoplasms
;
Upper Extremity
;
Wounds and Injuries
6.Risk Factors for Anastomotic Leakage after Laparoscopic Rectal Resection.
Dong Hyun CHOI ; Jae Kwan HWANG ; Yong Tak KO ; Han Jeong JANG ; Hyeon Keun SHIN ; Young Chan LEE ; Cheong Ho LIM ; Seung Kyu JEONG ; Hyung Kyu YANG
Journal of the Korean Society of Coloproctology 2010;26(4):265-273
PURPOSE: The anastomotic leakage rate after rectal resection has been reported to be approximately 2.5-21 percent, but most results were associated with open surgery. The aim of this study was to identify risk factors and their relationship to the experience of the surgeon for anastomotic leakage after laparoscopic rectal resection. METHODS: Between March 2003 and December 2008, 156 patients underwent a laparoscopic rectal resection without a diverting ileostomy. The patients' characteristics, the details of treatment, the intraoperative results, and the postoperative results were recorded prospectively. Univariate and multivariate analyses were applied to identify risk factors for anastomotic leakage. RESULTS: The majority of operations were performed for malignant disease (n = 150; 96.2%), and 96 patients (61.5%) were males. Conversion to open surgery occurred in 1 case (0.6%). The anastomotic leak rate was 10.3% (16/156), and there were no mortalities. In the univariate analysis, tumor location, anastomotic level, intraoperative events, and operation time were associated with increased anastomotic leakage rate. In the multivariate analysis, anastomotic level (odds ratio [OR], 6.855; 95% confidence interval [CI], 1.271 to 36.964) and operation time (OR, 8.115; 95% CI, 1.982 to 33.222) were significantly associated with anastomotic leakage. CONCLUSION: The important risk factors for anastomotic leakage after laparoscopic rectal resection without a diverting ileostomy were low anastomosis and long operation time. An additional procedure, such as diverting stoma, may reduce the anastomotic leakage if it is selectively applied in cases with these risk factors.
Anastomotic Leak
;
Conversion to Open Surgery
;
Humans
;
Ileostomy
;
Laparoscopy
;
Male
;
Multivariate Analysis
;
Prospective Studies
;
Risk Factors
7.Clinical characteristics of p-ANCA (anti-neutrophil cytoplasmic antibody)-related nephritis: a single center experience.
Hyeock Joo KANG ; Sun Hee PARK ; Ja Yong PARK ; Yong Bong SHIN ; Chan Duck KIM ; Woo Taek TAK ; Jeong Ho LEE ; Yong Lim KIM
Korean Journal of Medicine 2008;74(5):523-530
BACKGROUND/AIMS: We evaluated the clinical characteristics and prognostic value of the clinical, laboratory, pathologic features, at time of diagnosis, and the renal survival of patients with ANCA (anti-neutrophil cytoplasmic antibody)-related nephritis. METHOD: We retrospectively analyzed 17 patients who were diagnosed with ANCA-related nephritis at a single center. The risks of progression to ESRD or death according to the clinical parameters, the ANCA pattern and the renal pathologic findings were evaluated. RESULTS: The major symptoms were hematuria (100%), proteinuria (100%), uremic symptoms (41.2%), edema (35.5%), upper respiratory symptoms (29.4%) and oliguria (23.5%), which were not correlated with renal survival. All the patients showed a p-ANCA pattern. The BUN level (p=0.032) and GFR (p=0.023) at the time of diagnosis were different between the improved and the progressed patients in terms of renal function. The pathology indices were not predictive factors of both renal and patient survival. Eight patients (47.1%) were treated with steroid IV pulse, 4 (23.5%) with steroid IV pulse and cyclophosphamide IV pulse, 2 (11.8%) with steroid IV pulse, cyclophosphamide IV pulse and plasma exchange, and 2 (11.8%) with steroid IV pulse and plasma exchange. Fourteen patients (82.4%) needed hemodialysis. There were 3 (17.6%) disease-related deaths, 13 patients (76.5%) reached ESRD and 4 (23.5%) showed recovery of renal function. The mean percent of patients who survived was 80.2% and the mean percent of renal survival was 33.3% at the 1st and 3rd year, respectively. CONCLUSIONS: Poor renal function at presentation was associated with a high risk for disease progression, but age, gender, the clinical patterns of presentation and the pathologic findings were not associated with the prognosis. Early diagnosis and treatment seems to be essential to improve the renal outcomes.
Antibodies, Antineutrophil Cytoplasmic
;
Cyclophosphamide
;
Cytoplasm
;
Disease Progression
;
Early Diagnosis
;
Edema
;
Hematuria
;
Humans
;
Kidney Failure, Chronic
;
Nephritis
;
Oliguria
;
Plasma Exchange
;
Prognosis
;
Proteinuria
;
Renal Dialysis
;
Retrospective Studies
8.Crystal-induced Acute Renal Failure due to Acyclovir in a Renal Transplant Patient.
Hyeock Joo KANG ; Chan Duck KIM ; Woo Taek TAK ; Sung Won PARK ; Ho Sang BAE ; Sun Hee PARK ; Jeong Ho LEE ; Yong Lim KIM
The Journal of the Korean Society for Transplantation 2006;20(2):253-257
Several medications are associated with the production of crystals that are insoluble in human urine. Intratubular precipitations of these crystals can lead to acute renal insufficiency. Many patients who require treatment with these medications have additional risk factors, such as volume depletion, underlying renal insufficiency and immunocompromised state that increase the risk of drug induced intrarenal crystal deposition. We experienced a case of crystal-induced acute renal failure due to acyclovir in a 44 year-old male renal allograft recipient. He was diagnosed as Varicella Zoster at 12 days after transplantation, and treated with intravenous (IV) acyclovir (IV infusion of acyclovir 250 mg mixed with normal saline 100 mL within several minutes three times a day, total seven times). Two days after initiation of IV acyclovir, serum BUN was increased up to 160 mg/dL, serum creatinine was increased up to 9.9 mg/dL and urine output was decreased to anuria. With discontinuation of acyclovir, hemodialysis was started as treatment of renal insufficiency. Renal function was restored after discontinuation of acyclovir.
Acute Kidney Injury*
;
Acyclovir*
;
Adult
;
Allografts
;
Anuria
;
Chickenpox
;
Creatinine
;
Herpes Zoster
;
Humans
;
Male
;
Renal Dialysis
;
Renal Insufficiency
;
Risk Factors
9.Sliding after Internal Fixation of Stable Intertrochanteric Fracture of the Femur.
Woo Suk LEE ; Whan Young CHUNG ; Woo Sik KIM ; Yong Chan KIM ; Taek Soo JEON ; Sung Kwun JO ; In Tak BAE ; Young Su LIM
Journal of the Korean Fracture Society 2005;18(2):110-114
PURPOSE: To evaluate the risk factors of sliding after internal fixation with sliding compression hip screw in stable intertrochanteric fracture of the femur. MATERIALS AND METHODS: From March 2000 to April 2003, 61 stable intertrochanteric fractures (Kyle-Gustilo type II) were treated operatively with sliding compression hip screws. The patients were 40 females and 21 males with an average age of 74 (range, 54~99). We measured vertical and horizontal shortening in regard to age, sex, bone mineral density, neck-shaft angle, cancellous bone defect, and the existence of lessor trochanter fracture on postoperative 6 months. RESULTS: The average vertical shortening was 4.1 mm (0~22 mm) and the average horizontal shortening was 7.3 mm (0~30 mm). Age, sex, bone density and neck-shaft angle were not significantly related with vertical and horizontal shortening (p>0.05). Vertical shortening was significantly greater in the group with cancellous bone defect and in the group without lesser trochanter fracture (p<0.05). CONCLUSION: Proper management for fracture site and fixation was needed to make it stable because the stable intertrochanteric fracture with cancellous bone defect and intact lesser trochanter could be induced into unexpected sliding.
Bone Density
;
Female
;
Femur*
;
Hip
;
Hip Fractures
;
Humans
;
Male
;
Risk Factors
10.Arthroscopic Versus Mini-Open Rotator Cuff Repair: Comparison of Clinical Results.
Yong Girl RHEE ; Jeong Han HA ; Chan Tak LIM ; Bi O JEONG
The Journal of the Korean Orthopaedic Association 2005;40(3):299-304
PURPOSE: To compare the clinical results of an arthroscopic rotator cuff repair with those of a mini-open repair. MATERIALS AND METHODS: Sixty-three patients with a rotator cuff tear were enrolled in this study. Thirty patients had an arthroscopic repair and 33 patients underwent a mini-open repair. The average age was 50 years (range, 23-74) in the arthroscopic group and 50 years (range, 38-69) in the mini-open group. In the arthroscopic group, 8 patients had small-sized tears (<1 cm), 18 patients had medium tears (1-3 cm), and 4 patients had large tears (3-5 cm). In the mini-open group, 12 patients had small tears, 19 patients had medium tears, and 2 patients had large tears. The average follow-up period in the arthroscopic and mini-open groups was 39 (range, 24-77) and 40 months (range, 24-64), respectively. RESULTS: The level of shoulder pain [1.10 vs. 1.45, p>0.05], the range of motion, muscle strength, patient's satisfaction, the ASES score [91.7 vs. 88.6, p>0.05] and the UCLA score [32.4 vs. 31.2, p>0.05] were compared. The size of the tear did not produce different results. In the arthroscopic group, the tendon tore again in one patient, and one anchor-related complication was noted. In the mini-open group, one patient developed a stiff shoulder. CONCLUSION: An arthroscopic and a mini-open repair of rotator cuff tears produced similar clinical results and the size of the tear had little effect. The clinical results depend on the surgical technique and the patient's condition, rather than the method of repair.
Follow-Up Studies
;
Humans
;
Muscle Strength
;
Range of Motion, Articular
;
Rotator Cuff*
;
Shoulder
;
Shoulder Pain
;
Tendons

Result Analysis
Print
Save
E-mail