Calculate and compare z-scores of the coronary arteries using the most recent data published from Quebec, Boston, and Washington, D.C. Particularly useful in patients with a concern for coronary artery involvement related to Kawasaki disease.

September 17, 2019 - A coronary artery Z score between +2.0 and less than +2.5 (i.e., 2 to less than 2.5 standard deviations above the average normalized for body surface area) is considered dilated. A coronary artery with a Z score between +2.5 and less than +5.0 ...

March 9, 2025 - Core Tip: Kawasaki disease (KD) is a critical pediatric vasculitis, with coronary artery lesions (CALs) as its most severe complication. The coronary artery Z-score is a valuable metric for assessing coronary dilation in KD patients. This paper reviews six Z-score calculation formulas, with ...

Calculator to find out the z-score of a normal distribution, convert between z-score and probability, and find the probability between 2 z-scores.

Z=0 means median of the coronary arterial diameter. Ratio means measurement value divided by median of the coronary artery diameter. You can also avail values of Z scores previously reported. de Zorzi A, Colan SD, Gauvreau K, Baker AL, Sundel RP, Newburger JW.

Coronary artery involvement in children with Kawasaki disease: risk factors from analysis of serial normalized measurements. Circulation. 2007;116:174–9. doi: 10.1161/CIRCULATIONAHA.107.690875. [DOI] [PubMed] [Google Scholar] 37.Olivieri L, Arling B, Friberg M, Sable C. Coronary artery Z score regression equations and calculators derived from a large heterogeneous population of children undergoing echocardiography.

Primarily useful for patients with Kawasaki Disease, this calculator will return a z-score for the left main coronary artery (LMCA), left anterior descending (LAD), and right main coronary artery (RCA).

March 14, 2022 - Each z score formula yields slightly different results that could influence the diagnosis of coronary artery abnormalities, and the discrepancy of calculated Z scores is greater in cases of larger coronary aneurysm dimensions [10]. This discrepancy may have various reasons. These BSA-adjusted z score systems used different BSA equations derived from other normal population sizes and differences in sex and race. Regression methods also differed according to the z score system. The echocardiographic evaluation of patients with suspected Kawasaki disease should focus on imaging the left main coronary artery, left anterior descending (LAD), left circumflex (LCX), right coronary artery (proximal, middle, and distal segments), and posterior descending coronary arteries.

Coronary arteries Z scores [Japanese] [Chinese] · [Select background colour] [Z score project] [Support]

IQR indicates interquartile range; IVIG, intravenous immunoglobulin; KD, Kawasaki disease. Baseline echocardiography was obtained either before IVIG administration or within 2 days of first IVIG treatment. Nearly 30% of patients (n=77) had a zMax ≥2.0, 21% had a z score ≥2.5 (n=55), and 15% (n=38) had a z score ≥3.0 (Figure).

RCA: Calculate · 1. Kuo HC, Chen SH, Chen IF, Cheng WI, Liu SF, Guo MMH, Lin YC, Chen YH. Novel multiple Z-score models for detection of coronary artery dilation: application in Kawasaki disease. https://doi.org/10.1186/s12969-024-01040-9 2. Lin MT, Chang CH, Hsieh WC, Chang CE, Chang YM, Chen YC, et al.

September 29, 2023 - KD-1 had significantly higher peak VO2 Z-score (p = .025), peak PD% (p = .008), peak metabolic equivalent (p = .027), and peak rate pressure product (p = .036) than KD-2. KD-CA had slightly reduced EC than healthy peers. KD-CA with Max-Z ≥ 2.5 had significantly lower peak EC than those < 2.5. Max-Z is potentially useful follow-up indicator after acute stage of KD. Children and adolescents after acute stage of Kawasaki disease (KD-CA) have a higher risk of developing coronary artery (CA) aneurysm if their CA Z-score ≥ 2.5.

Methods: Twenty-one patients with Kawasaki disease with right CA (RCA) or left anterior descending CA (LAD) Z scores of 1.5 to 3 (group 1) were randomly selected, and all patients with Kawasaki disease with Z scores of 7 to 14 for either the RCA or LAD (n = 20; group 2) were included from March 2008 to May 2014. Two echocardiographers measured left main CA, LAD, and RCA dimensions. The inter- and intraobserver reliability of absolute measurements was calculated, and the CA Z scores derived from three commonly used formulas were compared.

The Boston Children's Hospital Z-Score Calculator allows for the calcuation of the standard score (z-score) of various regressions based on data gathered over the past 12 years on normal children.

Suggest a new calculator! ... The z-score is the number of standard deviations a data point is from the population mean.

Just enter your raw score, population mean and standard deviation, and hit "Calculate Z".

Use this z table, also referred as z score table, standard normal distribution table and z value chart, to find a z score. If you are not sure how to look up z score probabilities in the z tables, you will find easy to use z score probability calculator (to find right and left tail probabilities) and a z score calculator (to calculate a z score) right after the tables.

Download this calculator in an excel file or take a Crash course in Z-scores

The calculator solves three types of problems. Type 1. Find the area (probability) to the left, right, or between two Z-scores. Type 2. Find the z-score if the cumulative probability level (p-value) is given.

The z-score calculator, p-value calculation, z-table, formulas, solved example with step by step calculation to find the normalized, standard or relative standing value of a random variable of the normal distribution, calculated from the population of $68, 75, 81, 87$ and $90$. For any other values of random member, mean and standard deviation, just supply three real numbers and click on the "GENERATE WORK" button.