Photo Credit: Shivendu Jauhari

The following is a summary of “Relationship between map scores and complications after standard percutaneous nephrolithotomy,” published in the November 2024 issue of Urology by Yazar et al. 

Upper urinary tract stones are common, and PCNL is used for stones larger than 2 cm. MAP scoring predicts complications based on perinephric adipose tissue thickness and adhesion. 

Researchers conducted a retrospective study to analyze the relationship between MAP score and clinical findings, focusing on postoperative Hgb drop and complications. 

Patients were divided into 2 groups based on MAP score: <3 and ≥3. The study analyzed the impact of MAP scores on demographic, clinical, and surgical factors. It also explored the relationship between MAP score and complications using the Clavien-Dindo classification, as well as factors influencing complications and bleeding outcomes. 

The results showed the Hgb drop was 2.56 ± 1.00 in the group with a MAP score ≥ 3, significantly higher than the 1.43 ± 1.21 in the group with MAP score < 3 (P < 0.001). The stone-free rate was 81.7% in the group with MAP score < 3, significantly higher than 59.6% in the group with MAP score ≥ 3 (P = 0.012). 

The study concluded that as MAP score increased in patients scheduled for standard PNL, Hgb drop rose, stone-free rates declined, and postoperative urinary infections increased. 

Source: bmcurol.biomedcentral.com/articles/10.1186/s12894-024-01639-w