ST-504 mode guide
How should Sequence and Whole mode be compared?
Compare chamber behavior and equipment observations without turning a mode label into a medical choice.
Read the chambers
Compare order and release rather than label strength.
Hold variables steady
Keep fit, pressure, clothing, and timing separate.
Know when to stop
Move to safety guidance for symptoms or abnormal behavior.
Sequence and Whole are controller labels. They are not diagnoses, treatment plans, or rankings. A useful comparison starts with the chamber behavior described in the current instruction for use. Watch which sections inflate, when they release, and whether the controller completes the selected cycle.
Start with the physical question
Before comparing modes, check the sleeve position and tubing. A shifted sleeve can make one program feel different from another. A bent tube can interrupt inflation. A low battery can stop a cycle before the programmed behavior is visible.
Use the ST-504 setup guide for the connection and seated-position checks. The comparison is only useful after the basic equipment path is stable.
What to record during each mode
Record one complete cycle at a time. Write down the selected label. Note the order of chamber changes. Note whether the display remains consistent and whether the sleeve stays in place. Keep pressure, heat, clothing, and session length unchanged while comparing modes.
These notes describe operation. They do not measure blood flow. They do not show that one mode is medically better. They help separate a mode difference from a fit or equipment issue.
Keep pressure out of the mode comparison
Mode and pressure are separate controls. A Whole label does not automatically mean maximum pressure. A Sequence label does not identify a particular pressure level. Read the L1-L3 settings through the ST-504 pressure levels guide.
Do not change mode and pressure together. If the sensation changes, the cause becomes harder to identify. Change one equipment variable only after the manual allows the next step.
When the comparison should stop
Stop for pain, increasing numbness, unusual heat, a new skin change, visible damage, smoke, or unexpected controller behavior. Do not switch modes to test a problem. Use the ST-504 safety guide when the question concerns symptoms or suitability.
The current instruction for use controls the exact sequence, duration, and operating limits. A mode name is useful vocabulary. It is not permission to exceed those limits.
For a clean comparison, use the same seated position and inspect the sleeve before each session. If the result changes after a connector is reseated, the physical setup may explain the difference better than the mode name. Keep that distinction in the session note.
Source boundary for mode questions
The current manual controls the exact program behavior. General FDA medical device information can provide regulatory context, but it cannot decide which mode is suitable for a person.