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Reference Ranges for Red Blood Cells (Nursing)

by Rhonda Lawes

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    00:01 Okay. Sometimes, when I look at a chart like this, it gets a little overwhelming.

    00:05 So let me give you some tips.

    00:07 Just start from the left and work your way over. Let's look at that first column, talking about red blood cell, hemoglobin, and hematocrit. Okay, cool.

    00:15 We know those, right? We're familiar with those already.

    00:19 Now I've got a red bar over there that says we actually measure these, and that's an important note we'll talk about in reference to the next slide.

    00:26 But for now, know that we can measure the red blood cell, the hemoglobin, and the hematocrit.

    00:31 Next column; Blood, Blood and Blood.

    00:34 Right. That tells us where our sample is.

    00:36 It's always important to know where your sample's coming from.

    00:40 So we've got red blood cells, it's in the blood.

    00:43 The value is 4.89.

    00:46 Now there's something different in this one as compared to white blood cells.

    00:50 Remember, white blood cells we talked about being 5-10, but that really represented 5,000-10,000.

    00:56 When you see 4.89 here, that's not 4,000, that is 106, so that's 4,890,000 units.

    01:08 Now still, healthcare professionals will report that as 4.89.

    01:12 I just wanted you to know this is different than white cells. It's not thousand.

    01:16 It's the millions of units there.

    01:18 It's 106.

    01:21 So the normal reference is 4-6.10.

    01:24 So we have a value of 4.89.

    01:27 Normal is 4-6.10. We're right on target.

    01:31 Let's look at the next value. Hemoglobin.

    01:34 All right? This is going to tell us about the oxygen-carrying capacity.

    01:38 This is where you have 2 values to be familiar with.

    01:41 It's different whether you're a male or a female.

    01:44 Males have a higher hemoglobin range.

    01:47 So they're 14-17.

    01:49 Females are 12-15 for this particular lab.

    01:53 So if we look at this, you'll notice we picked a value that was right in the middle.

    01:57 So we don't need to know for sure if this is male or female.

    01:59 We know that this is still normal, whether the patient is male or female.

    02:04 Hematocrit is that percentage, right? The hematocrit is 45.2.

    02:09 Now looking over to the right, again, we picked a number that was normal, whether they were male or female.

    02:15 But when you see test questions or real patients, you'll need to know their gender to make sure that their H&H is within the normal reference range for their gender; male or female.

    02:26 Now, I know we've talked about this before, but I want to keep reminding you.

    02:30 I know that you have different textbook in nursing school and so the ranges are different in whatever textbook you're looking at, but the same thing happens in real practice.

    02:38 Every lab may have a little bit different normal reference range.

    02:43 The cool part, their normal reference for that particular lab will be listed right on your lab results.

    02:49 So pay attention to that lab's normal references and you'll be fine.

    02:53 And unlike nursing school, when you get tested on the normal ranges, when you're in real practice, every lab posts their normal ranges right next to your lab results.

    03:03 Rock on. So that's awesome.

    03:05 One less thing for you to memorize, but you'll know the general ranges.

    03:09 Now, you'll see looking at this chart, looks pretty familiar, but now you see the blue bar that says "calculated." These are the values I talked about that you probably kind of looked at, but didn't really know what to do with them. That's okay.

    03:24 I'm going to lay it out for you, so you'll be able to look at these and understand where they're coming from.

    03:29 Okay, so MCV. These are all from the blood, right? A value of 92. That's within normal range.

    03:36 When you look at each one of these values, you checked and reference it with a normal reference range.

    03:41 MCH is 30.2.

    03:44 Look at the normal reference range. You got it, 27-32. This is normal.

    03:50 MCHC, 32.6.

    03:53 Looks like it might be a little low, but it's still within the normal reference range.

    03:58 Now we're looking at the RDW CV, 11.5 is still spot on for that percentage to be within the normal reference range.

    04:07 Now, how useful was this going through this? If you don't know what MCV is or MCH or MC -- it's just letters.

    04:15 Don't worry. This is just an example to introduce you to those and I wanted you to have the reference, so you know that these are calculated.

    04:22 The previous slide we talked about, red blood cells and hemoglobin and hematocrit that are actually measured, these are drawn from calculations.

    04:30 Now you'll never have to do the calculations because lab will do them for you.

    04:34 But we'll break those down just a little bit later.


    About the Lecture

    The lecture Reference Ranges for Red Blood Cells (Nursing) by Rhonda Lawes is from the course Complete Blood Count (CBC) (Nursing).


    Included Quiz Questions

    1. 4.7–6.1
    2. 5.7–7.3
    3. 2.3–5.1
    4. 0–3.2
    1. 14–17 in men and 12–15 in women
    2. 11–14 in men and 13–16 in women
    3. 42–52 in men and 36–46 in women
    4. 34–37 in men and 40–43 in women
    1. 42–52 in men and 36–46 in women
    2. 14–17 in men and 12–15 in women
    3. 11–14 in men and 13–16 in women
    4. 34–37 in men and 40–43 in women

    Author of lecture Reference Ranges for Red Blood Cells (Nursing)

     Rhonda Lawes

    Rhonda Lawes


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