By Joseph Varon, Robert E. Fromm Jr.
This pocket consultant is a single-volume resource of the most typical and demanding formulation and laboratory values utilized in the day-by-day perform of acute care and important care medication. details is gifted in define structure and as tables, images, and algorithms to facilitate speedy search for. Acute and demanding Care formulation and Laboratory Values is designed to aid clinicians to interpret medical facts, to use formulation, and to appreciate laboratory values, and to combine this data with their wisdom of pathophysiology to advertise the supply of evidence-based care.
• crucial formulation and laboratory values
• a number of how one can derive a cost, the place appropriate
• Non-clinical formulation helpful for knowing physiologic recommendations or that underlie diagnostic assessments or medical size included
• Chapters divided via organ system
• useful appendixes of “Abbreviations” and “Key phone Numbers”
• a unique “Notes” part for recording usually used formulas
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Additional info for Acute and Critical Care Formulas and Laboratory Values
7 Interpretation of thyroid function tests in the ICU Test High T4 Hypothyroid syndrome Hyperthyroid Low T3 syndrome Low T3/T4 syndrome TSH Higha Nl/low Low Low to sl ↑ Low to sl ↑ Total T4 Low High High Nl Low Total T3 Low to low Nl Low/Nl/high High Low Low Reverse T3 Nl/low Nl/high High High High Free T4 Low Nl/high High Nl Nl T3RU Low Nl/low High Nl/high High Nl = normal; sl = slight a Except TSH is low in hypothyroidism of secondary and tertiary causes 8. Nutrition Formulas 31 9. Nutrition Formulas Please refer to Chap.
The following formulas and facts should be useful in a broad range of ICU patients and patients presenting to the ED. Many additional important facts and formulas related to the GI tract can be found in Chap. 8. 1. 1: 2. Stool Formulas As part of the diagnostic work-up of patients with diarrhea, stool osmolal gap (SOG) is usually calculated utilizing the following formula: SOG = stool osmolality - 2 ´ (stool Na + + stool K + ) Normal stool osmolality is <290 mOsm/L. If the SOG > 100, it indicates an osmotic diarrhea and <100 indicates secretory diarrhea.
Thyroid Function Tests 29 6. 5 Differentiating exogenous insulin administration, insulinoma, and oral hypoglycemic agent-induced hypoglycemia Laboratory test Insulinoma Exogenous insulin Sulfonylureas Insulin autoimmune Plasma insulin level ↑ ↑↑ ↑ ↑ Insulin antibodies Nonea Present Nonea ↓ Plasma/urine sulfonylurea levels Absent Absent Present Absent C-peptide ↑ N/↓ ↑ ↑ Other causes of hypoglycemia such as hepatic failure should be considered in the ICU ↑ = increased; ↓ = decreased; N = normal a May be present if the patient has had prior insulin injections 7.