“…The plasma volume was estimated as: (1 − hematocrit) × (a + [b × weight in kg]), where a = 1530 for men and 864 for women and b = 41 for men and 47.9 for women [16] . Nutritional status was assessed using the Geriatric Nutritional Risk Index (GNRI) [17] , [18] . The study was approved by our institutional review board with the waiver of consent (HS2021-197) and was performed in accordance with the Declaration of Helsinki.…”