1.Effect of remimazolam on intraoperative hemodynamic stability in patients undergoing cerebrovascular bypass surgery: a prospective randomized controlled trial
Chang-Hoon KOO ; Si Un LEE ; Hyeong-Geun KIM ; Soowon LEE ; Yu Kyung BAE ; Ah-Young OH ; Young-Tae JEON ; Jung-Hee RYU
Korean Journal of Anesthesiology 2025;78(2):148-158
Background:
Maintenance of stable blood pressure (BP) during cerebrovascular bypass surgery is crucial to prevent cerebral ischemia. We compared the effect of remimazolam anesthesia with that of propofol-induced and desflurane-maintained anesthesia on intraoperative hemodynamic stability and the need for vasoactive agents in patients undergoing cerebrovascular bypass surgery.
Methods:
Sixty-five patients were randomized into remimazolam (n = 31, remimazolam-based intravenous anesthesia) and control groups (n = 34, propofol-induced and desflurane-maintained anesthesia). The primary outcome was the occurrence of intraoperative hypotension. The secondary outcomes included hypotension duration, lowest mean BP (MBP), generalized average real variability (ARV) of MBP, and consumption of phenylephrine, norepinephrine, or remifentanil.
Results:
Occurrence rate and duration of hypotension were significantly lower in the remimazolam group (38.7% vs. 73.5%, P = 0.005; 0 [0, 10] vs. 7.5 [1.25, 25] min, P = 0.008). Remimazolam also showed better outcomes for lowest MBP (78 [73, 84] vs. 69.5 [66.25, 75.8] mmHg, P < 0.001) and generalized ARV of MBP (1.42 ± 0.49 vs. 1.66 ± 0.52 mmHg/min, P = 0.036). The remimazolam group required less phenylephrine (20 [0, 65] vs. 100 [60, 130] μg, P < 0.001), less norepinephrine (162 [0, 365.5] vs. 1335 [998.5, 1637.5] μg, P < 0.001), and more remifentanil (1750 [1454.5, 2184.5] vs. 531 [431, 746.5] μg, P < 0.001) than the control group.
Conclusions
Remimazolam anesthesia may provide better hemodynamic stability during cerebrovascular bypass surgery than propofol-induced and desflurane-maintained anesthesia.
2.Effect of remimazolam on intraoperative hemodynamic stability in patients undergoing cerebrovascular bypass surgery: a prospective randomized controlled trial
Chang-Hoon KOO ; Si Un LEE ; Hyeong-Geun KIM ; Soowon LEE ; Yu Kyung BAE ; Ah-Young OH ; Young-Tae JEON ; Jung-Hee RYU
Korean Journal of Anesthesiology 2025;78(2):148-158
Background:
Maintenance of stable blood pressure (BP) during cerebrovascular bypass surgery is crucial to prevent cerebral ischemia. We compared the effect of remimazolam anesthesia with that of propofol-induced and desflurane-maintained anesthesia on intraoperative hemodynamic stability and the need for vasoactive agents in patients undergoing cerebrovascular bypass surgery.
Methods:
Sixty-five patients were randomized into remimazolam (n = 31, remimazolam-based intravenous anesthesia) and control groups (n = 34, propofol-induced and desflurane-maintained anesthesia). The primary outcome was the occurrence of intraoperative hypotension. The secondary outcomes included hypotension duration, lowest mean BP (MBP), generalized average real variability (ARV) of MBP, and consumption of phenylephrine, norepinephrine, or remifentanil.
Results:
Occurrence rate and duration of hypotension were significantly lower in the remimazolam group (38.7% vs. 73.5%, P = 0.005; 0 [0, 10] vs. 7.5 [1.25, 25] min, P = 0.008). Remimazolam also showed better outcomes for lowest MBP (78 [73, 84] vs. 69.5 [66.25, 75.8] mmHg, P < 0.001) and generalized ARV of MBP (1.42 ± 0.49 vs. 1.66 ± 0.52 mmHg/min, P = 0.036). The remimazolam group required less phenylephrine (20 [0, 65] vs. 100 [60, 130] μg, P < 0.001), less norepinephrine (162 [0, 365.5] vs. 1335 [998.5, 1637.5] μg, P < 0.001), and more remifentanil (1750 [1454.5, 2184.5] vs. 531 [431, 746.5] μg, P < 0.001) than the control group.
Conclusions
Remimazolam anesthesia may provide better hemodynamic stability during cerebrovascular bypass surgery than propofol-induced and desflurane-maintained anesthesia.
3.Effect of remimazolam on intraoperative hemodynamic stability in patients undergoing cerebrovascular bypass surgery: a prospective randomized controlled trial
Chang-Hoon KOO ; Si Un LEE ; Hyeong-Geun KIM ; Soowon LEE ; Yu Kyung BAE ; Ah-Young OH ; Young-Tae JEON ; Jung-Hee RYU
Korean Journal of Anesthesiology 2025;78(2):148-158
Background:
Maintenance of stable blood pressure (BP) during cerebrovascular bypass surgery is crucial to prevent cerebral ischemia. We compared the effect of remimazolam anesthesia with that of propofol-induced and desflurane-maintained anesthesia on intraoperative hemodynamic stability and the need for vasoactive agents in patients undergoing cerebrovascular bypass surgery.
Methods:
Sixty-five patients were randomized into remimazolam (n = 31, remimazolam-based intravenous anesthesia) and control groups (n = 34, propofol-induced and desflurane-maintained anesthesia). The primary outcome was the occurrence of intraoperative hypotension. The secondary outcomes included hypotension duration, lowest mean BP (MBP), generalized average real variability (ARV) of MBP, and consumption of phenylephrine, norepinephrine, or remifentanil.
Results:
Occurrence rate and duration of hypotension were significantly lower in the remimazolam group (38.7% vs. 73.5%, P = 0.005; 0 [0, 10] vs. 7.5 [1.25, 25] min, P = 0.008). Remimazolam also showed better outcomes for lowest MBP (78 [73, 84] vs. 69.5 [66.25, 75.8] mmHg, P < 0.001) and generalized ARV of MBP (1.42 ± 0.49 vs. 1.66 ± 0.52 mmHg/min, P = 0.036). The remimazolam group required less phenylephrine (20 [0, 65] vs. 100 [60, 130] μg, P < 0.001), less norepinephrine (162 [0, 365.5] vs. 1335 [998.5, 1637.5] μg, P < 0.001), and more remifentanil (1750 [1454.5, 2184.5] vs. 531 [431, 746.5] μg, P < 0.001) than the control group.
Conclusions
Remimazolam anesthesia may provide better hemodynamic stability during cerebrovascular bypass surgery than propofol-induced and desflurane-maintained anesthesia.
4.Effect of remimazolam on intraoperative hemodynamic stability in patients undergoing cerebrovascular bypass surgery: a prospective randomized controlled trial
Chang-Hoon KOO ; Si Un LEE ; Hyeong-Geun KIM ; Soowon LEE ; Yu Kyung BAE ; Ah-Young OH ; Young-Tae JEON ; Jung-Hee RYU
Korean Journal of Anesthesiology 2025;78(2):148-158
Background:
Maintenance of stable blood pressure (BP) during cerebrovascular bypass surgery is crucial to prevent cerebral ischemia. We compared the effect of remimazolam anesthesia with that of propofol-induced and desflurane-maintained anesthesia on intraoperative hemodynamic stability and the need for vasoactive agents in patients undergoing cerebrovascular bypass surgery.
Methods:
Sixty-five patients were randomized into remimazolam (n = 31, remimazolam-based intravenous anesthesia) and control groups (n = 34, propofol-induced and desflurane-maintained anesthesia). The primary outcome was the occurrence of intraoperative hypotension. The secondary outcomes included hypotension duration, lowest mean BP (MBP), generalized average real variability (ARV) of MBP, and consumption of phenylephrine, norepinephrine, or remifentanil.
Results:
Occurrence rate and duration of hypotension were significantly lower in the remimazolam group (38.7% vs. 73.5%, P = 0.005; 0 [0, 10] vs. 7.5 [1.25, 25] min, P = 0.008). Remimazolam also showed better outcomes for lowest MBP (78 [73, 84] vs. 69.5 [66.25, 75.8] mmHg, P < 0.001) and generalized ARV of MBP (1.42 ± 0.49 vs. 1.66 ± 0.52 mmHg/min, P = 0.036). The remimazolam group required less phenylephrine (20 [0, 65] vs. 100 [60, 130] μg, P < 0.001), less norepinephrine (162 [0, 365.5] vs. 1335 [998.5, 1637.5] μg, P < 0.001), and more remifentanil (1750 [1454.5, 2184.5] vs. 531 [431, 746.5] μg, P < 0.001) than the control group.
Conclusions
Remimazolam anesthesia may provide better hemodynamic stability during cerebrovascular bypass surgery than propofol-induced and desflurane-maintained anesthesia.
5.Acute Pancreatitis Associated with Eosinophilic Gastroduodenitis: A Case Report
Tae Ho SUNG ; Jung Yun LEE ; Yu IL KIM ; Hyo Suk KIM ; Tae Geun GWEON ; Tae Ho KIM ; Chang Hwan KIM ; Jae Hyuck CHANG
Korean Journal of Pancreas and Biliary Tract 2023;28(4):126-130
Acute pancreatitis caused by eosinophilic gastroenteritis is a rare disease, and little has been reported so far. Diagnosing eosinophilic gastroenteritis is difficult because the symptoms and laboratory findings are not specific. We report a rare case of eosinophilic gastroenteritis related to acute pancreatitis as a possible cause of idiopathic acute pancreatitis. A 61-year-old man visited the hospital complaining of epigastric pain. Although no pancreatic abnormalities were confirmed on imaging studies, the patient showed hyperamylasemia and hyperlipasemia. Serum eosinophil fractions were initially normal. However, they were elevated on follow-up examinations, and a large number of eosinophils were observed in the biopsies of the stomach and duodenum, which led to the diagnosis of eosinophilic gastroduodenitis related to acute pancreatitis.
6.Utility of an Automatic Vision-Based Examination System (AVE-562) for the Detection of Clonorchis sinensis Eggs in Stool
Yu Jeong LEE ; Eun Jeong WON ; Young-Chang CHO ; Soo Hyun KIM ; Myung Geun SHIN ; Jong Hee SHIN
Annals of Laboratory Medicine 2021;41(2):221-224
Stool examination is the gold standard for the detection of intestinal parasites. We assessed the performance of a newly developed AVE-562 analyzer (AVE Science & Technology Co., Hunan, China) for the vision-based detection of eggs of Clonorchis sinensis—the most common intestinal parasite in Korea—in stool samples. In total, 30 stool samples with a high or low egg count or without eggs (as negative control samples) (N = 10 each) were prepared and analyzed. The performance of the AVE-562 analyzer was compared with that of the formalin-ether concentration (FEC) method. The overall correct identification rate of the AVE-562 analyzer based on FEC results was 66.6%. The sensitivity, specificity, positive predictive value, and negative predictive value of the AVE-562 analyzer for detecting C. sinensis eggs were 36.4%, 100.0%, 100.0%, and 73.1%, respectively. The average time required to run five tests simultaneously was 27 min using the AVE-562 analyzer and 58 min using the FEC method. Although the AVE-562 analyzer enables rapid and convenient stool examination, its sensitivity needs to be improved, particularly considering the prevalence of low-burden C. sinensis infection in Korea.
7.Effect of Congenital C4–5 Synostosis on Adjacent Mobile Segments: Radiographic Assessment
Myung-Sang MOON ; Won Rak CHOI ; Hyuon Gyu LIM ; Seong Man JEON ; Chang Geun YU
Asian Spine Journal 2021;15(2):139-142
Methods:
Radiograms of the 11 study subjects (six men and five women), aged 22–90 years who visited the outpatients’ clinic for various neck complaints without trauma history were examined. C4–5 synostosis was an incidental finding in all the subjects.
Results:
All the fused bodies were inwaisted and had anterior caudal breaking but no interior corporal flaring. Adjacent segment disease was not found in eight patients aged <40 years. Disk degeneration was found at C3–4 and C5–6 in three patients each and at C6–7 in two patients. Disk degeneration was limited to the adjacent segments.
Conclusions
Degenerative disk changes are associated with the natural aging process, and the corporal morphology of the fused vertebral becomes inwaisted similar to that in the single vertebrae.
8.Delayed Pseudoaneurysm of Deep Femoral Artery Caused by Migration of Lesser Trochanter, Subsequent to an Intertrochanteric Fracture Surgery - A Case Report -
Bum-Soo KIM ; Seong-Tae KIM ; Seungyup SHIN ; Chang Geun YU
Journal of the Korean Fracture Society 2021;34(2):76-79
The lesser trochanteric fracture is commonly found amongst intertrochanteric fractures, where pseudoaneurysm of the femoral artery is a rare complication. A pseudoaneurysm could develop due to the penetration injury of the artery by the bone fragment during occurrence of the fracture, or by the insertion of screws during the surgical procedure. Minimal complication is seen when the lesser trochanter is not fixed during the intertrochanteric fracture surgery. However, in the current case, the authors experienced appearance of a delayed pseudoaneurysm of the deep femoral artery caused by migration of the lesser trochanter, which was successfully treated by excision.
9.Delayed Pseudoaneurysm of Deep Femoral Artery Caused by Migration of Lesser Trochanter, Subsequent to an Intertrochanteric Fracture Surgery - A Case Report -
Bum-Soo KIM ; Seong-Tae KIM ; Seungyup SHIN ; Chang Geun YU
Journal of the Korean Fracture Society 2021;34(2):76-79
The lesser trochanteric fracture is commonly found amongst intertrochanteric fractures, where pseudoaneurysm of the femoral artery is a rare complication. A pseudoaneurysm could develop due to the penetration injury of the artery by the bone fragment during occurrence of the fracture, or by the insertion of screws during the surgical procedure. Minimal complication is seen when the lesser trochanter is not fixed during the intertrochanteric fracture surgery. However, in the current case, the authors experienced appearance of a delayed pseudoaneurysm of the deep femoral artery caused by migration of the lesser trochanter, which was successfully treated by excision.
10.Effect of Congenital C4–5 Synostosis on Adjacent Mobile Segments: Radiographic Assessment
Myung-Sang MOON ; Won Rak CHOI ; Hyuon Gyu LIM ; Seong Man JEON ; Chang Geun YU
Asian Spine Journal 2021;15(2):139-142
Methods:
Radiograms of the 11 study subjects (six men and five women), aged 22–90 years who visited the outpatients’ clinic for various neck complaints without trauma history were examined. C4–5 synostosis was an incidental finding in all the subjects.
Results:
All the fused bodies were inwaisted and had anterior caudal breaking but no interior corporal flaring. Adjacent segment disease was not found in eight patients aged <40 years. Disk degeneration was found at C3–4 and C5–6 in three patients each and at C6–7 in two patients. Disk degeneration was limited to the adjacent segments.
Conclusions
Degenerative disk changes are associated with the natural aging process, and the corporal morphology of the fused vertebral becomes inwaisted similar to that in the single vertebrae.

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