Standard digit-based versus 90° rotation technique for supraglottic airway device insertion: a meta-analysis of randomized controlled trials / 대한마취과학회지

Background@#Prompt insertion and placement of supraglottic airway (SGA) devices in the correct position are required to secure the airway. This meta-analysis was performed to validate the usefulness of the 90° rotation technique as compared with the standard digit-based technique for the insertion of SGA devices in anesthetized patients in terms of insertion success rate, insertion time, and postoperative complications. @*Methods@#A literature search of PubMed, EMBASE, CENTRAL, CINAHL, Scopus, and Web of Science was conducted. Randomized controlled trials, without limitations on publication period, language, journal, or region, until July 2021, that compared the 90° rotation and the standard digit-based techniques for insertion of SGA devices in anesthetized patients were included. @*Results@#The first-attempt (risk ratio [RR]: 1.16, 95% CI [1.09, 1.25], P < 0.001) and overall success rates (RR: 1.06, 95% CI [1.03, 1.09], P < 0.001) were significantly higher in the 90° rotation group. The insertion time was shorter in the 90° rotation group (mean difference: −4.42 s, 95% CI [−6.70, −2.15 s], P < 0.001). The incidences of postoperative sore throat (RR: 0.63, 95% CI [0.49, 0.83], P < 0.001) and blood staining (RR: 0.28, 95% CI [0.20, 0.39], P < 0.001) were lower in the 90° rotation group. @*Conclusions@#The use of the 90° rotation technique increases the success rate of SGA device insertion and decreases postoperative complications as compared with that of the standard digit-based technique in anesthetized patients.

Distant metastasis of follicular thyroid carcinoma to the mandible: a rare case report

Treatment of metastatic carcinoma of the oral cavity can be a challenge due to its rarity. The current case report details metastatic carcinoma of the mandible originating from follicular thyroid carcinoma, which is the second most prevalent tumor of the thyroid. As the mandibular lesion developed, the primary thyroid lesion of thyroid. Here, we report a case of metastatic carcinoma of the mandible in a 67-year-old female that was treated with partial mandibulectomy and fibular free flap.

Post-operative Physical Performance Factors Associated With Gait Speed in Patients Surgically Treated for Hip Fracture: A Cross-Sectional Study

OBJECTIVE: To determine post-operative physical performance factors associated with gait speed in patients surgically treated for hip fracture. METHODS: Cross-sectional data from 59 patients (16 males and 43 females; mean age, 79.2±9.1 years) who underwent hip fracture surgery were enrolled. Patients completed a 10-meter walk test (10MWT) to assess gait speed. Additional physical performance tests included the Timed Up and Go test (TUG), the Berg Balance Scale (BBS), maximum voluntary isometric contraction (MVIC) of the knee extensors and flexors on the operated and non-operated sides as well as of the hip abductors (all tested using air-resistance weight machines), and analysis of spatio-temporal gait parameters at about 6 weeks after hip surgery. RESULTS: Bivariate analyses revealed a significant positive correlation between the post-operative 10MWT and the post-operative TUG, age, swing phase duration, and gait cycle duration along with a significant negative correlation between post-operative BBS score, MVIC of the knee extensors and flexors on the operated and non-operated sides, MVIC of the hip abductors, and cadence and stance phase duration. Linear regression analyses revealed that the post-operative TUG (β=0.85, p<0.01), gait cycle duration (β=0.17, p=0.02), and osteoporosis (β=-0.18, p=0.02) were associated with the post-operative 10MWT. CONCLUSION: The presence of osteoporosis, post-operative balance, and isometric muscle strength in the operated and non-operated legs were statistically associated with post-operative gait speed early after hip fracture surgery.

Distant metastasis of follicular thyroid carcinoma to the mandible: a rare case report

Treatment of metastatic carcinoma of the oral cavity can be a challenge due to its rarity. The current case report details metastatic carcinoma of the mandible originating from follicular thyroid carcinoma, which is the second most prevalent tumor of the thyroid. As the mandibular lesion developed, the primary thyroid lesion of thyroid. Here, we report a case of metastatic carcinoma of the mandible in a 67-year-old female that was treated with partial mandibulectomy and fibular free flap.

Avoiding pressure ulcers: beyond proper positioning / 대한마취과학회지

No abstract available.

Changes in blood coagulation after colloid administration in patients undergoing total hip arthroplasty: comparison between pentastarch and tetrastarches, a randomized trial / 대한마취과학회지

BACKGROUND: Hydroxyethyl starch (HES) solutions are used as plasma expanders for correcting hypovolemia, but can lead to impaired coagulation. We evaluated the changes in hematological and hemostatic profiles with three types of HES. METHODS: Patients were randomized to receive volume replacement with 10% pentastarch 260/0.45 in 0.9% saline (Group-PEN, n = 25), 6% tetrastarch 130/0.4 in 0.9% saline (Group-TET(S), n = 25), or 6% tetrastarch 130/0.4 in a balanced electrolyte solution (Group-TET(B), n = 25). Coagulation was assessed using rotational thromboelastometry (ROTEM(R)) and other laboratory tests were performed, including measurements of hematological and hemostatic parameters and electrolytes. RESULTS: Post-operative ROTEM(R) parameters changed toward hypocoagulable states in all groups. The post-operative parameters of EXTEM and FIBTEM were more impaired in Group-PEN than in Group-TET(B). The percentage change in INTEM clot formation time (P = 0.004) and alpha-angle (P = 0.003) were smaller in Group-TET(S) and Group-TET(B) than in Group-PEN. The percentage change in the FIBTEM maximum clot firmness was greatest in Group-PEN (P = 0.011). The international normalized ratio of prothrombin time (P < 0.001) and the activated partial thromboplastin time (P < 0.001) were significantly prolonged in Group-PEN compared to those of Group-TET(B). CONCLUSIONS: The 6% HES 130/0.4 in a balanced electrolyte solution seemed to have less of an impact on blood coagulation than the 10% HES 260/0.45. No differences in hemostatic profile were observed between the balanced electrolyte and saline-based 6% HES 130/0.4.

The optimal anesthetic depth for interventional neuroradiology: comparisons between light anesthesia and deep anesthesia / 대한마취과학회지

BACKGROUND: This study was designed to determine the optimal anesthetic depth for the maintenance and recovery in interventional neuroradiology. METHODS: Eighty-eight patients undergoing interventional neuroradiology were randomly allocated to light anesthesia (n = 44) or deep anesthesia (n = 44) groups based on the value of the bispectral index (BIS). Anesthesia was induced with propofol, alfentanil, and rocuronium and maintained with 1-3% sevoflurane. The concentration of sevoflurane was titrated to maintain BIS at 40-49 (deep anesthesia group) or 50-59 (light anesthesia group). Phenylephrine was used to maintain the mean arterial pressure within 20% of preinduction values. Recovery times were recorded. RESULTS: The light anesthesia group had a more rapid recovery to spontaneous ventilation, eye opening, extubation, and orientation (4.1 +/- 2.3 vs. 5.3 +/- 1.8 min, 6.9 +/- 3.2 min vs. 9.1 +/- 3.2 min, 8.2 +/- 3.1 min vs. 10.7 +/- 3.3 min, 10.0 +/- 3.9 min vs. 12.9 +/- 5.5 min, all P < 0.01) compared to the deep anesthesia group. The use of phenylephrine was significantly increased in the deep anesthesia group (768 +/- 184 vs. 320 +/- 82 microg, P < 0.01). More patients moved during the procedure in the light anesthesia group (6/44 [14%] vs. 0/44 [0%], P = 0.026). CONCLUSIONS: BIS values between 50 and 59 for interventional neuroradiology were associated with a more rapid recovery and favorable hemodynamic response, but also with more patient movement. We suggest that maintaining BIS values between 40 and 49 is preferable for the prevention of patient movement during anesthesia for interventional neuroradiology.

Propofol as a controlled substance: poison or remedy / 대한마취과학회지

No abstract available.

A Closed-Suction Catheter with a Pressure Valve Can Reduce Tracheal Mucosal Injury in Intubated Patients / 대한구급학회지

BACKGROUND: Endotracheal suctioning is associated with complications that include bleeding, infection, hypoxemia, cardiovascular instability, and tracheal mucosal injury. Recently, a closed-suction catheter with a pressure valve (Acetrachcare, AceMedical Co., Republic of Korea) was developed. We hypothesized that this new catheter might reduce tracheal mucosal injury compared to a conventional closed-suction catheter (Trachcare, Kimberly-balla RD, USA). METHODS: This prospective, randomized study enrolled medical and surgical patients who required mechanical ventilation for more than 48 hours. Patients were randomized into two groups: one group was suctioned with the conventional closed-suction catheter (CCC) and the other group was suctioned with the closed-suction catheter with pressure valve (CCPV). Bronchoscopy was performed 48 hours later, and the severity of tracheal mucosal injury was graded on a 5-point scale, as follows: 0 = normal; 1 = erythema or edema; 2 = erosion; 3 = hemorrhage; and 4 = ulceration or necrosis. RESULTS: A total of 76 patients (37 with CCPV and 39 with CCC) were included. There were no significant differences between the groups regarding demographic characteristics, changes in hemodynamic parameters during suction, incidence of pneumonia, length of intensive care unit (ICU) stay, or ICU mortality. On bronchoscopic evaluation, the use of the CCPV led to a significant decrease in tracheal mucosal injury (median tracheal mucosal injury grade 1 [IQR 0-1] vs. 2 [IQR 1-3], p = 0.001). CONCLUSIONS: We conclude that the novel closed-suction catheter with pressure valve may reduce tracheal mucosal injury compared to conventional catheters.

Anesthetic management of a parturient with placenta previa totalis undergoing preventive uterine artery embolization before placental expulsion during cesarean delivery: a case report / 대한마취과학회지

Placenta previa totalis can cause life-threatening massive postpartum hemorrhage, and careful anesthetic management is essential. Preventive uterine artery embolization (UAE) before placental expulsion was introduced to reduce postpartum bleeding in cases of placenta previa totalis. We describe the case of a 40-year-old woman (gravida 0, para 0) with placenta previa totalis and uterine myomas who underwent intraoperative UAE, which was preoperatively planned at the strong recommendation of the anesthesiologist, immediately after delivery of a fetus and before removal of the placenta during cesarean delivery under spinal-epidural anesthesia. After confirming embolization of both uterine arteries, removal of the placenta resulted in moderate bleeding. The estimated blood loss was 2.5 L, and 5 units of red blood cells were transfused. The parturient was discharged uneventfully on postoperative day 4. This case shows that the bleeding risk is reduced by intraoperative UAE in a patient with placenta previa totalis, and anesthesiologists have an important role in a multidisciplinary team approach.

Anesthetic management of a parturient with placenta previa totalis undergoing preventive uterine artery embolization before placental expulsion during cesarean delivery: a case report / 대한마취과학회지

Placenta previa totalis can cause life-threatening massive postpartum hemorrhage, and careful anesthetic management is essential. Preventive uterine artery embolization (UAE) before placental expulsion was introduced to reduce postpartum bleeding in cases of placenta previa totalis. We describe the case of a 40-year-old woman (gravida 0, para 0) with placenta previa totalis and uterine myomas who underwent intraoperative UAE, which was preoperatively planned at the strong recommendation of the anesthesiologist, immediately after delivery of a fetus and before removal of the placenta during cesarean delivery under spinal-epidural anesthesia. After confirming embolization of both uterine arteries, removal of the placenta resulted in moderate bleeding. The estimated blood loss was 2.5 L, and 5 units of red blood cells were transfused. The parturient was discharged uneventfully on postoperative day 4. This case shows that the bleeding risk is reduced by intraoperative UAE in a patient with placenta previa totalis, and anesthesiologists have an important role in a multidisciplinary team approach.

The influence of propofol and sevoflurane on hemostasis: a rotational thromboelastographic study

BACKGROUND: Using rotational thromboelastometry (ROTEM) analysis, we investigated the difference in blood hemostasis, based on the primary anesthetic agents used during general anesthesia. METHODS: Sixty-six adult patients scheduled for elective ophthalmic surgery under general anesthesia were evaluated with regard to changes in each parameter in INTEM, EXTEM, and FIBTEM analyses. The patients received intravenous anesthesia with propofol and remifentanil (TIVA group) or inhalation anesthesia with sevoflurane (SEVO group). The ROTEM tests were performed 10 min before starting anesthesia and 1 h after finishing anesthesia. The INTEM and EXTEM analyses included the clotting time (CT), clot firmness time (CFT), alpha angle (alpha), and maximum clot firmness (MCF). The FIBTEM analyzed only MCF. Maximum clot elasticity (MCE) was calculated by (MCF x 100) / (100 - MCF). The platelet component of clot strength was calculated as follows: MCE(platelet) = MCE(EXTEM) - MCE(FIBTEM). RESULTS: The preoperative and postoperative parameters (CT, CFT, alpha, and MCF) in the INTEM, EXTEM, and FIBTEM analyses were not significantly different between the two groups. The MCE(platelet) also did not show a significant difference. CONCLUSIONS: Presuming that the ophthalmic surgery had a minimal traumatic effect, we conclude that both anesthetic agents cause negligible changes in ROTEM analyses postoperatively.

Sevoflurane versus propofol for interventional neuroradiology: a comparison of the maintenance and recovery profiles at comparable depths of anesthesia / 대한마취과학회지

BACKGROUND: Sevoflurane and propofol are used widely for interventional neuroradiology (INR). Using the bispectral index (BIS), we compared the clinical properties of sevoflurane and propofol anesthesia in patients undergoing INR at comparable depths of anesthesia. METHODS: The patients were allocated randomly into two groups. The sevoflurane group received propofol (1.5 mg/kg), alfentanil (5 microg/kg), and rocuronium (0.6 mg/kg) for induction, and the propofol group was induced with a target effect-site concentration of propofol (4 microg/ml), alfentanil (5 microg/kg), and rocuronium (0.6 mg/kg). After intubation, anesthesia was maintained with sevoflurane or propofol with 67% nitrous oxide in 33% oxygen. Sevoflurane and propofol concentrations were titrated to maintain the BIS at 50-60. Phenylephrine or opioid was used to maintain the mean arterial pressure within 20% of the baseline values. The amounts of phenylephrine or alfentanil used, the number of patients showing movement during the procedure, and the recovery times were recorded. RESULTS: Compared to the propofol group, the sevoflurane group showed faster recovery in spontaneous ventilation, eye opening, extubation, and orientation (4 vs. 7 min, 7 vs. 9 min, 8 vs. 10 min, 10 vs. 14 min, respectively; P < 0.01). In the propofol group, significantly greater amounts phenylephrine were used (P < 0.05), and more patients moved during the procedure (P < 0.05). CONCLUSIONS: The use of sevoflurane in maintaining anesthesia during INR was associated with faster recovery, less patient movement during the procedure, and a more stable hemodynamic response when compared to propofol.

Two birds with one stone: palonosetron pretreatment / 대한마취과학회지

No abstract available.

Delayed emergence from anesthesia resulting from posterior cerebral artery infarction after Guglielmi detachable coil embolization / 대한마취과학회지

No abstract available.

Delayed emergence from anesthesia resulting from posterior cerebral artery infarction after Guglielmi detachable coil embolization / 대한마취과학회지

No abstract available.

The neuroprotective effect of combining sevoflurane and remote ischemic preconditioning in forebrain ischemia model

BACKGROUND: The aim of this study was to investigate the combining effects of sevoflurane and remote ischemic preconditioning (RIPC) on cell death of pyramidal neurons in the CA1 hippocampus induced by transient global cerebral ischemia in rats. METHODS: Twenty rats were assigned to one of two groups; sevoflurane group and combination of sevoflurane and RIPC group. RIPC was performed by occluding the bilateral femoral arteries for 10 min 3 times in an interval of 10 min. Ischemia was induced by a bilateral common carotid artery occlusion plus hemorrhagic hypotension (26-30 mmHg) and was maintained for 8 min. Histologic outcomes were measured at 7 days after ischemia in CA1 pyramidal cells of the rat hippocampus. RESULTS: The combination group contained significantly more viable cells in the hippocampal CA1 area than sevoflurane group (71% vs. 46%, P = 0.03). The mean percentage of apoptotic cells was significantly reduced in the combination group compared to sevoflurane group (11% vs. 41%, P = 0.014). CONCLUSIONS: A combination of sevoflurane and RIPC can offer additional neuroprotective effects after transient global cerebral ischemia in rats.

Preoperative increased heart rate is related to the blood pressure decrease during spinal anesthesia for cesarean delivery

BACKGROUND: Hypotension is a very common side effect of spinal anesthesia for cesarean delivery. If we can predict the degree of blood pressure decrease after spinal anesthesia, hypotension will be treated better. Tachycardia may reflect the effective circulatory volume deficit. We studied if preoperative heart rate can predict the degree of hypotension after spinal anesthesia. METHODS: Fifty-two parturients for elective cesarean delivery were enrolled and the gestation periods of all parturient were over 37 weeks. In the supine position, noninvasive blood pressure (BP) and heart rate (HR) were measured as baseline values. After change to the right decubitus position, spinal anesthesia was done. Hyperbaric bupivacaine 8 mg and fentanyl 15 microg were injected intrathecally through 26G spinal needle. After return to the wedged supine position, BP and HR were measured every minute until anesthetic level was fixed. If mean BP decreased below 70% value of baseline, ephedrine 5 mg was injected intravenously. The lowest mean BP, hypotension (<80% of baseline) and total ephedrine requirement were recorded. Retrospective analysis was done after grouping by baseline heart rate (below 80 vs. over 80 beats/min). RESULTS: The patients who had more rapid heart rate before anesthesia, tended to have more decrease of mean BP during spinal anesthesia (P < 0.001, R = 0.45). In retrospective group analysis, the incidence of hypotension was lower in low HR group (46% vs. 83%, P = 0.014). CONCLUSIONS: If preoperative heart rate is over 80 beats/min, careful management is required to prevent hypotension during spinal anesthesia for cesarean delivery.

Peripheral nerve block for anesthesia in patients having knee arthroplasty / 대한마취과학회지

No abstract available.

The neuroprotective effect of colloids in forebrain ischemia model

BACKGROUND: The aim of this study was to investigate the neuroprotective effects of colloids (albumin and pentastarch) after forebrain global ischemia in rats. METHODS: Thirty male Sprague-Dawley rats were randomly assigned to three groups; control, albumin and pentastarch group (each n = 10). Forebrain ischemia was induced by bilateral common carotid artery occlusion plus hemorrhagic hypotension. The control group received no treatment. The albumin group received 5 ml/kg of 20% albumin after ischemia. The pentastarch group received same volume of albumin after ischemia. Histologic outcomes were measured at 7 days after ischemia in CA1 pyramidal cells of the rat hippocampus. RESULTS: The mean percentage of viable cells in the hippocampal CA1 area was significantly higher in the albumin (47%) compared with the control group (33%) or pentastarch group (33%) (P = 0.001). The percentage of apoptotic cells was significantly lower in the albumin (30%) group than that in the pentastarch (44%) or control group (49%) (P = 0.006). CONCLUSIONS: This study shows that albumin can improve histologic outcomes after forebrain global ischemia compared with pentastarch.