Browsing by Author "Morrison Corrales, Christopher Joseph"

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    EP072 Rebound pain with ambulatory perineural catheter for rotator cuff repair
    (2024) De La Cuadra Fontaine, Juan Carlos; Miranda Hiriart, Pablo; Morrison Corrales, Christopher Joseph; Altermatt Couratier, Fernando René
    Background and Aims The appearance of sudden intense pain, after a peripheral nerve block ceases, is kown as Rebound Pain (RP). The reported frequency is described as between 40-60%. To reduce its occurrence, the use of adjuvants and the use of perineural catheter have been described. Dexamethasone, both perineural and also intravenously, reduces the incidence of RP. The risk decreases to approximately 10-20%. The methodology of studies using continuous technique has not allowed us to further clarify the benefit of their use. Our objective was to measure the incidence of RP in patients undergoing shoulder rotator cuff surgery with the use of home perineural catheters in our postoperative ambulatory REDCAP registry.Methods The study has ethics committee approval. A review of REDCAP was carried out from January 1, 2020 to December 31, 2023, extracting data from patients with a diagnosis of rotator cuff tear. Pain >7 on a scale of 0-10 was considered rebound pain.Results 495 patients were identified. 58 were lost to post-discharge follow-up (11.7%). Among the remaining 437 patients, 81 (18.5%) reported pain >7 at least once. On first postoperative day, 26 (5.7%). On 2nd postoperative day, 33 patients (7,8%) At the end of the infusion, 5,8% of patients reported rebound pain according to the work definition.
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    Simulated-based training for ultrasound-guided popliteal block: determining the learning curve and transference to real patient
    (2024) Miranda, Pablo; Araneda, Andrea; Molina, Natalia; Miranda, Felipe; Morrison Corrales, Christopher Joseph; Corvetto Aqueveque, Marcia Antonia; Altermatt Couratier, Fernando René
    Background and Aims: This study aimed to determine the learning curve for an ultrasound-guided popliteal block and the transference of this training to a real patient situation. Methods: After approval by the ethics committee, ten first-year anesthesia residents were recruited to participate in a simulated-based training program to perform a single shot in plane popliteal block. (NCT06081790) Training consisted of 10 individual sessions, with direct feedback from the instructor, with a specific Laerdal® sciatic popliteal block phantom, lasting one hour and distributed weekly. At the end of each session, the resident’s performance was assessed. Residents were videotaped while performing the block, which was to be evaluated using a validated global rating scale (GRS). Additionally, a tracking motion device (ICSAD) attached to the operator’s hands recorded the total distance traveled by both hands (Total Path Length=TPL) and total procedure time (TPT). One week later, the same assessment was done on a real patient. Results: Ten residents completed the training and the assessments. Median values of GRS scores significantly improved from 14 to 28 through the training (p=0.02) (figure 1). Regarding ICSAD scores, TPT improved from 126 to 59.5 seconds (p=0.004), and TPL improved from 11.06 to 9.3 meters (p=0.432). We found no significant differences between the last simulated session and the subsequent measurement in an actual patient.