腹膜透析患者では平均血小板容積が死亡リスクに関連
10.2fL以上は全死因死亡、心血管死亡に独立して関連
東営市人民病院(中国)のJianghai Wang氏らは、PDを受けている患者1,322人を対象に、MPVと全死因死亡および心血管死亡との関連を推定した。関連は3つのモデルで評価した。モデル1は未調整の解析とした。モデル2は年齢、性別、チャールソン併存疾患指数、糖尿病、高血圧、透析前の心血管疾患、BMI、抗血小板薬で調整した。モデル3はモデル2の変数に加えて、ヘモグロビン、アルブミン、トリグリセライド、HDLコレステロール、LDLコレステロールで調整した。
中央値50カ月の追跡期間中、360人の死亡が確認された。解析の結果、MPVが10.2fL以上の患者では、3つのモデル全てにおいて、全死因死亡リスクが有意に高かった(ハザード比はそれぞれ0.68、0.70、0.73)。心血管死亡リスクも同様に高かった(同0.63、0.66、0.69)。
著者らは「今回の結果から、MPV高値(10.2fL以上)はPDで治療中の患者における全死因死亡および心血管死亡の独立したリスク因子かつ生物学的マーカーであることが示唆された」と述べている。
Mean Platelet Volume Linked to Mortality in Peritoneal Dialysis Patients
MPV ≥10.2 fL independently associated with all-cause mortality and cardiovascular mortality
WEDNESDAY, Nov. 22, 2023 (HealthDay News) -- For patients treated with peritoneal dialysis (PD), mean platelet volume (MPV) is associated with all-cause mortality and cardiovascular mortality, according to a study published online Nov. 8 in BMC Cardiovascular Disorders.
Jianghai Wang, from the Dongying People's Hospital in China, and colleagues estimated the relationship between MPV and all-cause and cardiovascular mortality among 1,322 patients treated with PD. The associations were assessed in three models: Model 1 was unadjusted; model 2 was adjusted for age, gender, Charlson comorbidity index, diabetes, hypertension, premorbid cardiovascular diseases, body mass index, and antiplatelet medication; and model 3 had further adjustment for hemoglobin, albumin, triglyceride, high-density lipoprotein cholesterol, and low-density lipoprotein cholesterol.
A total of 360 deaths were recorded during a median follow-up of 50 months. The researchers found that the risk for all-cause mortality was considerably higher among patients with MPV ≥10.2 fL in all three models (hazard ratios, 0.68, 0.70, and 0.73, respectively). The risk for cardiovascular mortality was also higher among patients with MPV ≥10.2 fL in models 1, 2, and 3 (hazard ratios, 0.63, 0.66, and 0.69, respectively).
"Our findings suggest that high levels of MPV (MPV ≥10.2 fL) is an independent hazards and biological marker for all-cause and cardiovascular mortality in patients treated with PD," the authors write.