PAP Risk Category Flow Chart Timothy N. Holt, DVM Lisa Herrick, Certified PAP Technician 2026 Location of Pap test: Walden, Colorado Elevation 8,175 feet
“Booth Angus” “Cherry Creek Angus”
PAP Risk Factor High Elevation Test Chart PAP test conducted at elevation >7,500 ft. For a stay at elevation for 6 weeks (75-90% Repeatable, Predictive Value)
Use at Low Elev. (<4,000 ft.)
Use at Moderate Elev. (4,000-5,000 ft.)
Use at High Elev. (5,500-7,500 ft.)
Use at Extreme Elev. (7,500 ft.)
PAP Score
34-41 42-44 45-49
Low Risk Low Risk
Low Risk Low Risk
Low Risk Low Risk
Low Risk Low Risk High Risk High Risk
Moderate Risk Moderate Risk
Moderate Risk Moderate Risk
Moderate Risk
> 50
High Risk
• When selecting an animal based on a PAP measurement other factors besides those listed above should be considered such as genetics or pedigree, PAP 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 3 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 (<10months) may result in a greater variability to the predictive and repeatability measurement. Repeatable or Repeatability Percent: This is a term used to give strength to a given PAP score predicting that If a retest PAP was carried out later in life then the score would be close to or within the same category 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 original 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 DEFINITIONS : •
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