The Hip - book

Hyperventilation

– See: respiratory alkalosis: – Discussion:     – induction of hypocapnia is probably the most frequently used technique to reduce intracranial pressure;     – lowering partial pressure of CO2 to 26-28 mm Hg (3.5-3.7 kPa) reduces cerebral blood flow & thus lowers intracranial pressure;     – even w/o ability to measure intracranial pressure, inducing … Read more

Hypocalcemia: Diff Dx

– Diff Dx:     – factitious levels 2nd to low protein and albumin (malabsorption, intestinal bypass surgery);     – causes related to calcium deficiency:           – osteomalacia (most common)           – vitamin D defficiency;           – rickets         … Read more

Hypochloremia

Decreased: Vomiting Diabetes mellitus w/ ketoacidosis, Mineralocorticoid Excess Renal dz w/ Na loss;  – also is commonly associated with loss of body potassium:  – as potassium is lost from diuretics, hyperaldosteronism, DKA, TPN, diarrhea, or vomiting, the potassium deletion is accompanied by a concomitant loss of chloride and is manifested by hypokalemia, and metabolic alkalosis

Hypoglycemia

– See: Glucose Decreased: Pancreatic d/o (Pancreatitis, Islet cell tumor), Extrapancreatic tumor (Adrenal ca, Gastric Ca, mesothelioma) Hepatic dz (Hepatitis, Cirrhosis, Tumor), Endocrine dz (Early DM, Hypothyroidism, Hypopituitarism), functional d/o (after gastrectomy) Ketotic Hypoglycemia, Exogenous Insulin, Oral hypoglycemic agents, Malnutrition Sepis; Meds: ETOH, Pentamidine, Disopyramide MAOI, Adrenal Insufficiency

HypoMagnesemia

  – Differential Diagnosis:       – Malabsorption, Steatorrhea, Diarrhea, Laxitive, ETOH/withdrawl, Alcoholism and Cirrhosis, Hyperthyroidism, Aldosteronism, Diuretics,       – RTA, Acute Pancreatitis Hyperparathyroidism, Hyperalimentation, NG suctioning, Chronic Dialysis, RTA, Hungry Bone syndrome,       – Hypophosphatemia, Intracellular shifts w/ respiratory acidosis or metabolic acidosis;        – Meds (Cis Platinum, Amphotericin B, Aminoglycosides Cisplatin, Ifosphamide, Insulin, … Read more

Hypertensive Emergency: (> 180/120-130)

– See:  – Antihypertensive Meds  – GMO Manual  – Iowa Family Practice Handbook – 1 – Iowa Family Practice Handbook – 2  – Merck Manual – Management: * Goal: Reduction of the DBP to 100-110; note: excessive reduction is avoided to minimize the risk stroke, MI; * In the absence of encephalopathy or acute vascular … Read more

Hyperthyroid induced Osteopenia

– Discussion: – hyperthyroidism produces high turnover type osteopenia from increased activity of the remodeling system; – high turnover osteopenia occurs in both hyperthyoidism & hyper-parathyroidism, although abnormalities of calcium homeostasis seen in hyperparathyroidism do not occur in hyperthyroidism; – Thyroid Panel – Medical Management: – Propylthiouracil    

Hyperthyroidism

– See:     – Thyroid Panel     – Ortho Changes     – Thyroid Storm – Hyperthyroidism, Chronic Rx:     – Long term Rx:          – PTU: initially: 150mg PO q8hr; (max 1200mg/day)          – Methimazole (Tapazole) in PO form;             … Read more

Hypertrophic Non Union

– Discussion:     – finding include hypertrophy of bone ends & sclerosis at 6 months post injury;     – these non unions theoretically have sufficient vascularity to heal but stability is lacking or normal axial alignment has not been restored;     – it is important to point out, however, that even with … Read more

Hyperuricemia

– Male 4.5-8.2 mg/dL; Female 3.0-6.5 mg/dL; Child 2-5.5 mg/dL; Increased: Gout Renal Failure, Increased DNA degredation (Leukemia, Anemia, Chemotherapy, Toxemia of Pregnancy), Meds (Diuretics), Lactic Acidosis PolyCystic Kidneys Sarcoidosis (50% will have hyperuricemia); Multiple Myeloma Decreased: Uricosuric Meds (Salicylates, Probenecid, Allopurinol), Wilson’s dz, Fanconi’s syndrome