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González Seguel, Felipe

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González Seguel

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Felipe

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Felipe Andrés González Seguel

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2023 - 20262
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End date: 2026 × Subject: Dialysis ×

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    Critical illness myopathy and trajectory of recovery in acute kidney injury requiring continuous renal replacement therapy: a prospective observational trial protocol
    (2023) J Pedro Teixeira, J. Pedro; Griffin, Benjamin R.; Pal, Chaitanya Anil; González Seguel, Felipe; Jenkins, Nathanial; Jones, Beth M.; Yoshida, Yuri; George, Naomi; Israel, Hayley Puffer; Ghazi, Lama; Neyra, Javier A.; Mayer, Kirby P.
    Introduction Acute kidney injury requiring renal replacement therapy (AKI- RRT) is common in the intensive care unit (ICU) and is associated with significant morbidity and mortality. Continuous RRT (CRRT) non- selectively removes large amounts of amino acids from plasma, lowering serum amino acid concentrations and potentially depleting total- body amino acid stores. Therefore, the morbidity and mortality associated with AKI- RRT may be partly mediated through accelerated skeletal muscle atrophy and resulting muscle weakness. However, the impact of AKI- RRT on skeletal muscle mass and function during and following critical illness remains unknown. We hypothesise that patients with AKI- RRT have higher degrees of acute muscle loss than patients without AKI- RRT and that AKI- RRT survivors are less likely to recover muscle mass and function when compared with other ICU survivors. Methods and analysis This protocol describes a prospective, multicentre, observational trial assessing skeletal muscle size, quality and function in ICU patients with AKI- RRT. We will perform musculoskeletal ultrasound to longitudinally evaluate rectus femoris size and quality at baseline (within 48 hours of CRRT initiation), day 3, day 7 or at ICU discharge, at hospital discharge, and 1–3 months postdischarge. Additional skeletal muscle and physical function tests will be performed at hospital discharge and postdischarge follow- up. We will analyse the effect of AKI- RRT by comparing the findings in enrolled subjects to historical controls of critically ill patients without AKI- RRT using multivariable modelling. Ethics and dissemination We anticipate our study will reveal that AKI- RRT is associated with greater degrees of muscle loss and dysfunction along with impaired postdischarge recovery of physical function. These findings could impact the in- hospital and postdischarge treatment plan for these patients to include focused attention on muscle strength and function. We intend to disseminate findings to participants, healthcare professionals, the public and other relevant groups via conference resentation and publication without any publication restrictions.
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    Acute skeletal muscle wasting in patients with acute kidney injury requiring continuous kidney replacement therapy: A prospective multicenter study
    (2026) Mayer, Kirby; Teixeira, Pedro; González Seguel, Felipe; Tran, Vinh; Gross, Jessica; Horikawa, Arimitsu; Anil, Chaitanya; Shareef, Zan; Puffer, Hayley; Wen, Yuan; Griffin, Benjamin; Neyra, Javier
    Purpose: Acute kidney injury (AKI) requiring continuous kidney replacement therapy (CKRT) has been hypothesized to increase the risk of developing intensive care unit-associated weakness (ICU-AW), but prospective data are lacking. Materials and methods: This prospective observational study evaluated critically ill adults with AKI requiring CKRT at two U.S. academic hospitals. Using ultrasonography (US), we quantified changes in rectus femoris (RF) muscle mass and quality in the first week after CKRT initiation. At hospital discharge, we assessed for ICU-AW, physical function, and frailty. Results: Twenty-three patients with median age 56 [IQR 47-60] years, BMI 29 [26-36] kg/m2, and Charlson Comorbidity Index 3 [1.5-5] were enrolled. The baseline Sequential Organ Failure Assessment (SOFA) score was 9 [7.5-11.5] and CKRT duration was 4 [1-7] days. Six (26 %) patients died in the ICU and one (4 %) transitioned to comfort measures before study completion. Substantial muscle wasting occurred between Day 1 and Day 7: RF muscle thickness (mT) decreased by 10 % [3 %-20 %]; RF cross-sectional area (CSA) decreased by 19 % [12 %-22 %]; and echo intensity (EI) increased (implying worse muscle quality) by 14 % [5 %-25 %]. A significant effect of time within subjects was observed for all three ultrasound measures (CSA: F = 66.2, p < 0.001; mT: F = 27.1, p < 0.001; EI: F = 22.5, p < 0.001). At hospital discharge, 67 % of survivors (n = 10/15) met criteria for ICU-AW. Conclusions: Patients with AKI requiring CKRT experienced significant muscle wasting in the first week following CKRT initiation and had high rate of ICU-AW at hospital discharge. Trial registration: NCT05287204, Registered 20 October 2021.

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