This page holds a finished PA-520 Week 4 ABG analysis worksheet example, with the sampling circumstances recorded in full before a single acid-base step is taken. Searches like "pa 520 week 4 assignment example", "pa520 week 4 sample" and "pa-520 week 4 example" land here.
What a finished PA-520 Week 4 ABG analysis worksheet looks like
The finished sheet is a form rather than an essay. A block at the top holds the sampling facts: arterial rather than venous, the time, the inspired oxygen written as room air or as a stated flow and delivery device, and temperature where the template asks for it. The values follow in the order the template prints them, each with its unit, so pH, carbon dioxide tension, bicarbonate, base excess and oxygen tension sit where a marker expects to find them. The worked lines underneath run short, one per decision, and each names the figure it used. A closing paragraph of three or four sentences ties the picture back to the supplied case. Nothing else on the sheet runs to a paragraph.
How a PA-520 Week 4 example is structured
The circumstances block is completed first and completely, because an oxygen tension read without knowing what was being inhaled is a figure with no meaning attached to it. The primary disturbance is identified next from the pH and whichever value moves with it. Compensation is then addressed as a direction and a degree, stated against what would be expected rather than as a bare label. Oxygenation is assessed separately and explicitly against the inspired oxygen recorded at the top. Where the template numbers its own steps, the sheet keeps that numbering instead of importing a different order out of a textbook. One line connects the picture to the vignette, naming which part of the story these figures fit. The sheet closes on limits: a gas is one moment, a trend needs a second sample, and nothing here reports what happened between them.
The box that is not results
Source, time, inspired oxygen and temperature are recorded before anything is interpreted. Points sit in that block on most versions of this form, and it is the part writers skip first.
Room air or a stated flow
An oxygen tension means one thing on room air and something else on a delivery device running at a stated rate, so the sheet writes down which, every time, without exception.
Compensation as direction and degree
The sheet says which way the compensating value has moved and how far, measured against an expected figure, instead of applying a label that carries no arithmetic behind it.
Oxygenation against what was inhaled
Oxygenation is assessed as a separate step and explicitly against the inspired oxygen in the top block, which is why an empty field there disables this part of the answer.
One moment, not a trend
The closing limits line states that a single sample describes an instant, that a second sample is what makes a direction visible, and that nothing here covers the interval between.
Where marks go in PA-520 Week 4
Leaving the inspired oxygen field empty is the most reliable way to lose this sheet, because every statement about oxygenation underneath it becomes uncheckable. An omitted draw time costs the same row on templates that ask for a trend. Venous values worked through an arterial framework fail the sheet outright, and a supplied case sometimes states which was taken precisely to see whether anyone read it. Compensation described as complete, with no statement of what completeness was measured against, reads as vocabulary rather than as reasoning. Method lines copied off a reference card without the case figures substituted into them are visible at a glance, since the numbers in the working do not match the numbers at the top.
Get a PA-520 Week 4 example written to your instructions
Send the worksheet file itself, the case your section published and any reference ranges printed on the form, and a completed example comes back inside 24-48h at no cost the first time. The sheet is filled to your template, field by field, rather than rewritten as prose that your rubric was never built to mark.
PA-520 Week 4 questions, answered
The template has no field for inspired oxygen. Should it still appear?
Yes, written into the first line of the interpretation where the form gives it nowhere else. Every oxygenation statement on the sheet depends on it, and a marker reading the working has no way to check that reasoning without it. Adding a field is safer than assuming room air on a case that never said so.
Are venous values ever acceptable on this worksheet?
Only where the assignment supplies them deliberately, and the answer is then about what they can and cannot support. Venous figures carry some acid-base statements and none of the oxygenation ones, and the finished sheet says which is which. Working them through as though they were arterial is the version that loses the record.
Does the arithmetic have to be shown?
Show enough that each conclusion can be traced back to the figures it came from, which usually means one line per decision naming the values used rather than a full derivation. Markers are checking whether the working belongs to this case, and figures that never reappear in the working are the clearest sign that it does not.