| Course | PA 524 Comprehensive Clinical Module Nephrology & Genitourinary |
|---|---|
| Week | 5 |
| Paper type | Volume and sodium case |
| Length | About 800 words, 5 pages |
| Format | APA 7 student paper |
| School | Chamberlain University |
| Program | Master of Physician Assistant Studies (MPAS) |
| Updated | October 2026 |
Free sample paper for PA 524 Week 5
Volume and Sodium Case: G.H. Called Dry on Weight, Orthostatic Vitals and Intake Before a Sodium of 126 Is Read, a Urine Sodium of 14 and Osmolality of 480, and a Fall Over Three Days That Limits the Correction
Student Name
Chamberlain University
PA 524: Comprehensive Clinical Module Nephrology & Genitourinary
Instructor Name
Month Day, Year
Volume and Sodium Case: G.H. Called Dry on Weight, Orthostatic Vitals and Intake Before a Sodium of 126 Is Read, a Urine Sodium of 14 and Osmolality of 480, and a Fall Over Three Days That Limits the Correction
The Volume Call, Evidenced
Verdict: G.H. is volume depleted. The findings that produced it: dry tongue and mouth; no edema at ankles or sacrum; a weight of 55.4 kg on admission against 58 kg two months ago and 57.8 kg on a home scale the week before the illness; a blood pressure that fell from 98/58 lying to 82/50 standing with a pulse rising by 26; neck veins flat at 30 degrees. Intake and output for the first 12 hours: 400 mL in by mouth and 240 mL of urine out, plus four loose stools not measured.
Losses and Gains in the History
Losses: three days of vomiting, about four to six times a day at first, and watery diarrhea of about eight stools a day, both rich in water and sodium. Gains: G.H. drank tea and tap water, about 1.5 liters a day, and ate almost nothing. A thiazide taken throughout added urinary sodium loss and impairs the kidney's ability to make dilute urine. So G.H. lost salt and water and replaced mostly water.
The Value Read at That State
The admission panel gave a sodium of 126 mmol/L with a measured osmolality of 262 mOsm/kg and a glucose of 104 mg/dL. That is hypotonic hyponatremia. Read at a state of volume depletion, it is hypovolemic hyponatremia: low volume is a strong signal for antidiuretic hormone release regardless of the low sodium, so the kidney holds the water G.H. drinks, and the thiazide makes it worse (Verbalis et al., 2013).
Urine and Serum Together
Urine osmolality 480 mOsm/kg: concentrated, so antidiuretic hormone is acting. Urine sodium 14 mmol/L: low, so the kidney is holding sodium, as it should in volume depletion. Together they fit hypovolemia from gut losses. The thiazide complicates the urine sodium, since it pushes sodium into the urine; a urine sodium of 14 despite the thiazide means the volume signal is strong. If G.H. were euvolemic with inappropriate antidiuretic hormone, urine sodium would usually exceed 30 mmol/L.
How Fast It Happened
G.H.'s sodium was 138 mmol/L four months ago and 135 at the last clinic visit. The creatinine rise that came with it met the KDIGO definition of acute kidney injury (Kellum & Lameire, 2013), which is part of why the water handling was disturbed. The illness lasted three days, so the fall is best treated as having developed over more than 48 hours. For chronic hyponatremia, the expert panel recommends limiting correction to avoid osmotic demyelination, with a goal of 4 to 8 mmol/L in 24 hours and no more than 10 to 12 mmol/L in any 24-hour period for most patients, and a lower limit of 8 for those at high risk (Verbalis et al., 2013). G.H. is older and undernourished, with possible low potassium, which places G.H. among those at higher risk.
The Correction Risk Specific to This Case
Hypovolemic hyponatremia carries a particular risk. Once isotonic fluid restores volume, the stimulus for antidiuretic hormone disappears, the kidney begins to excrete dilute urine, and sodium can rise quickly. Stopping the thiazide adds to that effect. So the plan was isotonic saline at a modest rate, a sodium draw roughly every five hours, urine output measured hourly for the first day, and a standing order to call if urine output exceeded 100 mL per hour. If sodium rose too fast, the panel's options include giving water or desmopressin to slow it.
What Happened
At 6 hours sodium was 128; at 12 hours 131; at 24 hours 133, a rise of 7 mmol/L, within the goal. Urine output rose to 140 mL per hour overnight, which prompted a reduction in the saline rate. The thiazide is not restarted; a different blood pressure medicine will be chosen before discharge.
Discharge Plan for Sodium
A repeat sodium is booked for three days after discharge, at the clinic laboratory, before G.H.'s new blood pressure medicine has reached a steady effect. G.H. was asked to drink to thirst rather than forcing fluids, and was told that weakness, confusion or a fall should prompt a call the same day. The thiazide is recorded as an adverse reaction, hyponatremia, so that it is not restarted by another prescriber.
References
Kellum, J. A., & Lameire, N. (2013). Diagnosis, evaluation, and management of acute kidney injury: A KDIGO summary (Part 1). Critical Care, 17(1), Article 204. https://doi.org/10.1186/cc11454
Verbalis, J. G., Goldsmith, S. R., Greenberg, A., Korzelius, C., Schrier, R. W., Sterns, R. H., & Thompson, C. J. (2013). Diagnosis, evaluation, and treatment of hyponatremia: Expert panel recommendations. The American Journal of Medicine, 126(10 Suppl. 1), S1-S42. https://doi.org/10.1016/j.amjmed.2013.07.006
The Chamberlain PA 524 Week 5 instructions
The fifth week asks you to work through a case of abnormal sodium by deciding volume status first. Begin with a short block stating whether the patient is dry, overloaded or neither, and list the findings behind the verdict: skin and mucous membranes, edema, weight trend, vital signs and intake and output. Then trace the losses and gains in the history. Only after that, give the sodium value and read it in light of the volume state. Interpret urine sodium and osmolality together with the serum values, accounting for any drug that alters them. Establish how quickly the change happened, because it governs how fast correction may proceed, and cite the limits. Address the specific risks of correcting this type of hyponatremia. Close with what happened and the plan for follow-up.
How this PA 524 Week 5 example is built
The case opens with a volume verdict, depleted, backed by a dry mouth, no edema, a weight of 55.4 kg against 58, orthostatic changes and 12-hour intake and output. A history section counts vomiting, diarrhea, tea and water and the thiazide. The sodium of 126 with an osmolality of 262 is then read as hypovolemic hyponatremia, citing the Verbalis panel. Urine osmolality of 480 and sodium of 14 are interpreted together, with the thiazide accounted for. A rate section uses earlier values to treat the fall as chronic and applies the 4 to 8 mmol/L daily goal, noting higher risk in an older undernourished patient. A section warns of brisk water loss after volume repletion. The 24-hour rise of 7 is reported, and a discharge section sets a repeat draw and records the thiazide reaction.
PA 524 Week 5 rubric: what full points look like
The rubric for this case puts volume first. Reading the sodium before deciding volume status, or deciding it without listed findings, costs the most. After that, graders turn to the urine and serum interpretation, including whether drug effects on urine sodium are considered. Credit is given for establishing the timeline and applying correction limits from a cited source; a plan without a rate limit is a serious deduction. The section on overcorrection risk is weighted because it shows understanding specific to hypovolemic hyponatremia. Smaller marks go to tracing losses and gains and to a realistic follow-up plan. Mislabeling the type of hyponatremia, for example calling a dry patient euvolemic, is heavily penalized. Current expert guidance should be cited.
Common PA 524 Week 5 mistakes, and how to avoid them
The most common error on this case is starting with the sodium value and fitting the volume status around it. Share your case findings and laboratory values, and the case drafted for you would make the volume call first with its evidence, trace the losses and gains, and only then read the sodium. Urine values are interpreted with any drug effects accounted for. The rate of change is established and correction limits from the source your course uses are applied. A section anticipates the specific risks of correcting your patient's type of hyponatremia. If your patient is overloaded rather than dry, the structure is the same with different findings. Check every limit and value against your course reading before you adapt the plan.
Get a PA-524 Week 5 example written to your instructions
Paste in the case your section posts, along with the marking sheet if one came with it, and a custom example written to that case arrives inside 24 to 48 hours, the first one free. Tell the desk whether the assignment wants a differential, a calculation, or both, and it is built accordingly.
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PA 524 Week 5 questions, answered
Our case gives a sodium result and almost nothing else. Is that enough?
It is enough to be marked on, and thin cases are often deliberate. The example states what the single value can and cannot narrow, then sets out the findings it would need to go further, grouped by whether they speak to volume or to concentration. That list is the deliverable in a sparse case, and sections that write them this way are testing exactly that.
Does the case need a correction calculation?
Some sections ask for one and some do not, so the example follows your sheet. Where it is wanted, the figures are laid out with their inputs visible and the result stated as an arithmetic answer rather than as an instruction, which is the line these pages hold. Decisions about an actual patient belong to your program and the sources it assigns.
Can the example include a graph of the values over time?
Yes where your assignment allows a figure, and it helps in this week more than in most, because a plotted series makes the rate of change visible in a way a paragraph does not. The plotted values are built to fit the case described and marked in the caption as invented, so nothing in it can be traced to a real record.
Where can I find a free PA 524 Week 5 sample paper?
This page holds the complete PA 524 Week 5 volume and sodium case, a dry patient with a sodium of 126 read only after the volume call.
Why does the PA 524 Week 5 sample warn about rapid sodium rise?
Once fluid restores volume, the stimulus for antidiuretic hormone disappears and the kidney releases dilute urine, so sodium can climb faster than the safe limit.