Stress Echo

Stress Echo

Calculated Fields

In the Stress Echo worksheet, the following fields are calculated automatically. These calculated values automatically update when any of the source values are changed.

 

Field

Source Values

Calculation Logic

Max APHR

Patient Age

220 - Patient Age

90% of Max APHR (Target)   

(or custom value instead of 90)

Max APHR

Max APHR × 0.9

Note: This calculation can be configured to use a custom value instead of 0.9.

% of Max APHR

 

Max APHR 

Max Achieved

(Max Achieved ÷ Max APHR)  × 100

Duke Treadmill Score

Duration (min:sec) from Exercise section,

Max ST Deviation,

Angina Scale (0, 1, or 2)

Duration - (5 × Max ST Deviation) - (4 × Angina Scale)

METs

last Grade and Speed with a BP or HR entry

(hc + vc + 3.5) ÷ 3.5

hc = (speed × 26.8 × 0.1)

vc = [speed × 26.8 × 1.8 × (grade ÷ 100)]

Note: The calculation will use the HR and BP from the last stage in which all values are documented.

Double Product

Heart Rate (HR), 

Systolic Blood Pressure (SBP) from last stage with both entered (not Rest)

(HR) × (SBP)

 Supported Measurements by Import Type

Studycast supports importing measurements to Stress Echo studies using XML files. The table below shows which measurements Studycast can import.  

Measurement

GE Case

Hillrom Q-stress

Rest BP Systolic

X

X

Rest BP Diastolic

X

X

Resting Heart Rate

X

 

Angina Scale

X

 

Max ST Deviation

X

 

Stages 1-6 Systolic

 

X

Stages 1-6 BP Diastolic

 

X

Stages 1-6 Heart Rate

 

X

Post Imm. - 5 minute Systolic

 

X

Post Imm. - 5 minute Diastolic

 

X

Post Imm. - 5 minute Heart Rate

 

X


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