Abstract
Aims: It has been suggested that immuno-nutritional status may play a role in blood pressure (BP) variations. This study aimed to investigate whether prognostic nutritional index (PNI) values differ between normotensive individuals and patients with newly diagnosed untreated hypertension (NDHT) and to clarify the relationship between the PNI and circadian BP patterns in NDHT patients.
 Methods: This retrospective study included 328 adult participants, comprising 164 NDHT patients and 164 normotensive individuals. The non-dipper BP pattern (NDP) was defined as a nighttime decline in BP of less than 10%. The PNI was calculated using the following formula: PNI=([10 × serum albumin (g/dL)] + [0.005 × total lymphocyte count]).
 Results: The mean PNI value was lower in the NDHT group than the normotensive group (53.6±6.1 vs. 58.2±5.3, p
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