PAP Risk Category Flow Chart Tim Shick, TJS Red Angus, Lodge Grass Montana Location of PAP Test: Laramie WY Elevation 7,186 feet, 48 days of altitude exposer Tested June 4th, 2024 Tim Holt, DVM PAP Risk Factor - High Elevation Test Chart PAP test conducted at elevation >7000 ft. (90% Repeatable, Predictive Value) PAP Use at Low Elev.
Use at Moderate Elev. Use at High Elev.
Use at Extreme
Score 34-39 40-45 46-49
(<4000 feet)
(4000-5500 FEET)
(5500-7500 feet)
(>7500 feet)
Low Risk Low Risk Low Risk
Low Risk Low Risk Low Risk
Low Risk Low Risk
Low Risk Low Risk
Moderate Risk
Moderate Risk
For the third year in a row we sent the bulls to Laramie, WY and then PAP tested them after being at 7,186 feet elevation for 48 days. The results... 2/3 of the sale bulls tested scored 45 or less! 2 *Repeatable or Repeatability percent—this is a term used to give strength to a given PAP score predict- ing that, If a retest PAP was carried out later in life then the score would be close to or within the same cate- gory as the original measurement. For example; a PAP measurement taken below 4000 feet only has a 40% repeatable percent meaning that a repeat test only has a 40% chance of staying within the same risk category as the original test. *Predictive Value —this term is closely related to repeatability percent but specifically says that the origi - nal score can accurately predict what that animal will retest in a higher elevation. *Risk —Defined as the likelihood of an animal developing pulmonary hypertension themselves or being at risk for having a genetic predisposition for the disease . >50 High Risk These recommendations are based on these bulls being 12 months and older. Repeatability and Predictive values increase with the age of the bull being tested as well as the elevation. *When selecting an animal based on a PAP measurement other factors besides those listed above should be considered such as genetics or pedigree, EPD’s, Systolic/Diastolic pressures, breed and previous illness. *Special consideration should be given to the amount of time the animal was exposed to elevation (>5500 ft) prior to testing. The predictability and repeatability of the PAP measurement improves with longer the exposure to higher elevation (minimum of 4 weeks is required). *This chart is based on animals greater than 10 months of age. Testing older animals (>12 months) results in a higher predictive and repeatability measurement. *Testing of younger animals (<12months) may result in a greater variability to the predictive and repeat- ability measurement and should be retested. Definitions: Moderate Risk Moderate Risk High Risk
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