Page 1 of 1: Try this !

Jayanth1983 · Credits: 4603 My Scrapbook

1.Whole Blood used for Transfusion lacks what clotting factors ?

2.Hematocrit of Packed cells is ?

3.In Iron def Anemia Hepcidin levels r ?

drsnehal · Credits: 238 My Scrapbook

Blood used for transfusion lacks in clotting factors V n VIII

Jayanth1983 · Credits: 4603 My Scrapbook

that's all right

But wat about the reptile part ??

P.S. : This question is from X grade Chemistry in The US

Jayanth1983 · Credits: 4603 My Scrapbook

Great goin...

U r gonna go places

Jayanth1983 · Credits: 4603 My Scrapbook

no replies yet .

sad to see this in RXPG

jk

sabby · Credits: 553 My Scrapbook

hi jayanth
hematocrit is paccked cells % in blood
so if we take jus packed cells its gotta be 100

omkarc · Credits: 5282 My Scrapbook

1)absence of 5 and 8th factor
2)The hematocrit (Ht or HCT) and packed cell volume (PCV) are measures of the proportion of blood volume that is occupied by red blood cells. It is normally 45 ± 7 (38-52%) for males and 42 ± 5 (37-47%) for women.

3)hepcidin level is incre.

omkarc · Credits: 5282 My Scrapbook

explain.of 2 q is
The packed cell volume can be determined by centrifuging. Heparinized blood in a capillary tube (also known as a microhematocrit tube) is typically centrifuged at 10,000 RPM for five minutes.[1] This separates the blood into layers. The volume of packed red blood cells, divided by the total volume of the blood sample gives the PCV. Because a tube is used this can be calculated by measuring the lengths of the layers.

With modern lab equipment the hematocrit is calculated by an automated analyzer and not directly measured. It is determined by multiplying the red cell count by the mean cell volume. The hematocrit is slightly more accurate as the PCV includes small amounts of plasma trapped between the red cells. An estimated hematocrit as a percentage may be derived by multiplying the hemoglobin level in g/dL times three and dropping the units. [2]. The hemoglobin level is the measure used by blood banks.

The hematocrit is considered an integral part of a person's complete blood count or CBC results along with the hemoglobin concentration, white blood cell count, and platelet count.

There have been cases where the blood for testing was inadvertently drawn from the same arm with the intravenous line running in a transfusion of packed red cells. In this sample, the hemoglobin measurement will be high because it is measuring the fluid being transfused (that is, mostly red cells) rather than the diluted serum. In this case, the hematocrit measurement will be artificially very high.

Conversely, if blood for hematology testing is drawn from a site proximal to that of an intravenous line infusing fluids into a patient, the blood sample will be diluted by those fluids and the hematocrit will be artefactually low.

If a patient is dehydrated, the hematocrit may be elevated. Repeat testing after adequate hydration therapy will usually result in a more reliable result.

In mammals, hematocrit is independent of body size.

[edit] Elevated hematocrit
In cases of dengue fever, where the full blood count is done daily, the hematocrit is monitored as a high hematocrit is a danger sign of an increased risk of dengue shock syndrome.

Polycythemia vera (PV) is associated with elevated hematocrit. PV is a myeloproliferative disorder in which the bone marrow produces excessive numbers of red cells, and reflects excessive numbers of RBC precursors in the bone marrow, as well as some abnormal forms. This condition is called erythroid hyperplasia. Excessive production of both RBCs and WBCs is called bilineage hyperplasia, and if there are excessive numbers of platelets also, trilineage hyperplasia. If PV is present, it is not uncommon to see the serum uric acid level elevated, reflecting an increase in the rate of cell turnover, reflecting increased pyridine metabolisme.

Another myeloproliferative disorder is called essential thrombocythemia, in which primarily the platelets are elevated in number.

Chronic obstructive pulmonary disease (COPD) and other pulmonary conditions associated with hypoxia may elicit an increased production of red blood cells. This increase is mediated by the increased levels of erythropoietin by the kidneys in response to hypoxia.

[edit] Lowered hematocrit
Lowered hematocrit can imply significant hemorrhage (for example, in an ectopic pregnancy.)

The mean corpuscular volume (MCV) and the red cell distribution width (RDW) can be quite helpful in evaluating a lower-than-normal hematocrit, because it can help the clinician determine whether blood loss is chronic or acute. The MCV is the size of the red cells and the RDW is a relative measure of the variation in size of the red cell population. A low hematocrit with a low MCV with a high RDW suggests a chronic iron-deficient erythropoiesis, but a normal RDW suggests a blood loss that is more acute, such as a hemorrhage

drjyothsna · Credits: 124 My Scrapbook

hepcidin level decreases in iron deff. anemia
hepcidin inhibits absorption of iron. hence it reduces in IDA.
AN INHERENT DEFECT IN HEPCIDIN CAUSES HAEMOCHROMATOSIS.
In chronic diseases hepcidin is released from liver as a result of inflammatory mediators. thus causing anaemia.

		Sign In New User? Sign Up Sign in to access your control panel and messenger!
				TechZone \| SpiderNevi \| HowTo? \| Scrapbook!