GI, NG tube, foley catheter, sutures, Phlebotomy Flashcards
What color tube do you use for thyroid function tests?
Gold
What color tube do you use for CBC?
Lavender
What color tube do you use for type & cross blood units?
purple/pink
What color tube do you use for STAT Chemistries?
green/light green
What color tube do you use for routine chemistries?
Gold/yellow or red
What color tube do you use for ESR?
Lavender
What color tube do you use for CRP?
Red or Gold
What color tube do you use for HIV?
Purple
What color tube do you use for Vitamin Levels?
Yellow/gold
Risk factors for DM:
- age > 44
- BMI >24
- First degree FHx
- Physical Inactivity
- HTN
- Vascular disease
- Ethnicity
In venous samples glucose can drop by how much if the tourniquet is left on for 6 minutes?
25 mg/dL
Explain what a FPG test is
person who has not eaten in the past 10-14 hours
Blood glucose chart
Clotting factors made in the liver
2, 5, 7, 10
A1C & blood glucose chart
When to assess glycemic status (A1C or other glycemic measures)
- two times a year in pts who are meeting tx goals
- at least quarterly and PRN in pts whose therapy has changed and/or who are not meeting glycemic goals
What are the incretins?
GLP-1 and GIP, released from gut within minutes of eating
GLP-1 still active in type II DM, but GIP is not
Alk Phos Normal levels
35-115 U/L
AST Normal Levels
15-43 U/L
ALT Normal Levels
6-63 U/L
GGT normal levels
8-60 U/L
Albumin serum normal levels
40-60 G/L
UCDavis values: 3.4-4.8 g/dL
10-15 grams synthesized in the liver/day
Lactate
60% hepatic clearance
- in liver disease → results in lactic acidosis
- important component in septic shock
- threshold in shock > 2 mmol/L
What is the preferred test for pancreatitis?
Lipase
What does the hypothalamus do?
HEAL
- Homeostatic mechanisms that control hunger, thirst and sexual desire
- Endocrine control (via the pituitary)
- Autonomic nervous system control
- Limbic system (emotion, sleep cycle)
Does the posterior pituitary make hormones?
no, it only stores them
ADH & Oxytocin
What are the basic guidelines for ordering Thyroid Function Tests?
When calcium levels are high, what happens to PTH?
PTH production is decreased
**Calcium & PTH have an inverse relationship**
Name the adrenal hormones from the cortex and the medulla
-
Cortex:
- Cortisol
- Aldosterone
- Sex hormones -→ small amount
-
Medulla:
- Catecholamines: epi, norepi, dopamine
Evaluation for Cushing’s Syndrome
Hypothyroidism: causes and s/sxs
-
Causes:
- Primary: Hashimoto’s = most common in the world and associated with thyroid antibodies
- iatrogenic (post-surgical)
- Iodine deficiency
- drug induced: lithium, amiodarone, interferon
-
S/sxs:
- fatigue, weight gain, cold intolerance, dry skin & hair, and muscle cramps
Hyperthyroidism causes & s/sxs
-
Causes:
- graves = MC; autoimmune etiology
- toxic adenoma
- iodine induced
- thyroid storm: accelerated hyperthyroidism uncommon but serious (10-75% mortality rate)
-
S/sxs:
- anxiety, heat intolerance, weight loss, tremors, palpitations, exophthalmos (bulging eyes)
Evaluating Hyperthyroidism
Typical diameter of small intestine and large intestine
small intestine: 5cm
large intestine: 8-10 cm
What is included in a coag panel?
clotting factors: 2,5 7, 10
PT
INR
Total serum bilirubin normal values
0.3-1.3mg/dL
- elevation of indirect/unconjugated: > 85% of total
- product of hgb breakdown from RBS
- not water soluble
- converted by liver to direct/conjugated
- elevation of direct/conjugated: > 50%
- water soluble
INR
not always reliable to gauge bleeding risk b/c it is only used to assess the extrinsic pathway
- INR of 1 = patient’s PT is normal
- INR > 1 = clotting time is elevated
- INR > 5 or 5.5 = unacceptable high risk of bleeding
- INR of 0.9-1.3 = normal range
- INR of 2.0-3.0 = normal range for a pt on warfarin
- INR target is higher in patients with a mechanical heart valve
AST vs ALT
-
AST:
- indicates hepatocellular damage → immediate/acute response
- found mainly in the liver but also the heart, RBCs, muscle and pancreas
- less specific
- elevated indicates:
- EtOH abuse, post-exercise, thyroid
- normal value: 15-43 U/L
-
ALT:
- hepatocellular injury marker after 24-48 hours but higher levels → delayed onset
- more specific to liver especially when elevated > 500
- valuable in chronic liver disease monitoring for overall liver health and mortality
- Elevation indicates:
- hepatitis, autoimmune, hemochromatosis, medications, toxins, Wilson disease
- Normal value: 6-63 U/L