00:00
Now here is the NCSPN, Nursing Clinical Judgment Model. Remember, what we're always
wanting you to focus on is recognizing what are the important cues that you should
pick up in a patient's assessment and things they are communicating to you because
you want to recognize those cues, analyze them, and use those to form a hypothesis
when you're making clinical judgments. So here are the renal assessment cues you need
to be aware of in your geriatric client. We're going to walk through these as a review
for you to be on the lookout in your clinical practice. So first, a review of function and
structure. Remember you're going to have decreased renal mass, you're going to have a
loss of functional glomeruli and tubules, and you're going to have a reduction in blood
flow to the kidneys. Now, let's look at regulatory hormonal changes. Hey, don't let the
endocrine system fool you or get you all worked up and stressed. It's really pretty
straightforward. So, let's walk through these. Now remember as you age, you have less
ADH and you're less responsive to the ADH that you do have. You'll have more atrial
natriuretic hormone or ANH. You have less of the RAAS. Your urine osmolality will
decrease. And your urine frequency definitely increases, particularly problematic at night.
01:29
Now you're looking for an increased risk of fluid imbalance so I know that I am on the
lookout with an elderly client to watch them very closely. I know they're at risk for
overload or for deficit or dehydration. So lung sounds is very important for you to
assess when it comes to fluid volume overload. So, look for signs of the patient is already
overloaded or hypervolemic before you give an IV fluid. See that's when the lung
sounds come in. You should listen to your elderly patient, front and back, including the
bases very closely to assess for any signs of fluid volume overload. You don't want to
add to the problem by giving an IV fluid to an elderly patient who's already overloaded.
02:16
You could throw them into severe pulmonary edema and respiratory distress. So, just
like we said, watch for signs of hypervolemia, look for signs of hypovolemia when they
have fluid loss, things like vomiting or diarrhea. Just remember they're more fragile,
they just don't have that margin or reserve that they had when they are younger
adults. Now, the EGFR. This is going to be decreased and the creatinine clearance is
going to be increased. So make sure that you assess renal function before you give any
potential nephrotoxic medications. Boy, this is one of the things that we spend a lot
of time on when I teach pharmacology with students. It's our job to know which
medications can take out an organ. So, if by some small chance someone orders the
medication, it makes it through the pharmacy, and it gets it to you, we bear the same
responsibility as nurses to make sure that we know which medications are toxic or
potentially toxic to the kidneys and we check those lab values. If you don't have them,
that's when you get on the phone to the healthcare provider and make sure that lab
work is done before you administer that medication. Now I want to talk about some
examples. An example of a standard nephrotoxic medication should not be given to a
client who has an EGFR of less than 60. Okay, so keep that in mind, know that if you're
giving a medication that has potential nephrotoxicity to an elderly patient wow you're
on guard right away and you want to make sure that you check their renal function
before giving that medication. Now, I want to give you a list of things that are possible
nephrotoxic medications because I want you to just have these written down.
04:03
This is a very important topic for your practice, but also I think this is a really important
area for testing. This has a high potential, because it's high risk, to show up on your
exams. So, we're looking at drugs with tubular cell toxicity or acute interstitial
nephropathy. Okay, that's very fancy ways of saying kidney damage, but it would be
things like aminoglycosides, amphotericin B, cisplatin, beta-lactam. Those are antibiotics.
04:33
Quinolones, rifampin, sulfonamides, vancomycin, acyclovir, and contrast agents. Okay,
so keep that in mind. That's a pretty long list of medications that have the potential
to be toxic to your patients' kidneys. Now also chronic use of acetaminophen, NSAIDs
like aspirins, you got diuretics or lithium, can also lead to this chronic interstitial
nephritis. Okay, so that's something you want to keep an eye on also. So, think of
the kidneys as extra fragile in our elderly populations. Be hyperaware of the medications
that they're on and the possible impact to damaging their kidneys.