The Hip - book

Non Dissociative Carpal Instability

– See: carpal instability – Discussion:     – refers to a proximal row instability which occurs in the absence of instability between the individual proximal carpi;            – ie, the scapholunate and lunotriquetral intervals are normal;     – potential sites of pathology:            – capitolunate … Read more

Non-Displaced Scaphoid Fractures

                              – See:     – Scahoid Frx Menu     – Non Diagnositic X-ray – Discusion:     – tension in palmar radioscaphocapitate ligament leads to displacement of distal pole of scaphoid;     – consider immobilization to relaxe palmar … Read more

non AG Met Acidosis: Diff Dx

– See ABG Non AG: Renal Non AG: Gut (Hyperchloremic Acidosis) RTA Diarrhea Carb Anhyd Inhib Fistulae Inhibitor Ileal loop (Urinary diversion) Post hypercapneic Ileostomy Excessive NS IV rate (mild) Ileus Repair phase of DKA Villous adenoma Anion Exchange Resins  – Cholestyramine CaCl Pancreatic & Biliary drainage Hyperalimentation Solutions  – w/ aminoacid salts – also … Read more

Non AG Hyper Cl Acidosis: Diff dx determined by changes in Serum Potassium

Hyperkalemia  – Determination of the serum K is especially useful in the evaluation of hyperchloremic metabolic acidosis.  Infusions of mineral acids result in elevated serum K levels because of the shift in K+ out of cells in exchange for H+ entry.  Thus, hyperalimentation, NH4 Cl, CaCl2 ingestion, and Cholestyramine administration, all cause a hyperkalemic Non Anion Gap Acidosis.  In addition, hypoadosteronism … Read more

Nitroprusside: Toxicity

– Discussion:  – therapy for > 24 hrs, excessive dosage, or RF may cause acculuation of thiocyanate, the metabolite, is excreted by kidney;  – thiocyanatetoxicity occurs at plasma levels of 5-10mg/dl;  – look for metabolic acidosis (early sign) blurred vision, tinnitus, or delirium, hepatic dysF(x), dyspnea, V, dizziness, ataxia, and syncope;  – metabolic acidosis is … Read more

Nitroprusside/Nipride

– See:  – After-Load  – Toxicity  – Discussion: – direct acting arterial & venous dilator is treatment of choice for HTN crises;  – if HTN remains, despite max dosing then use Chlorpromazine;  – consider Hydralazine when weaning from drip;  – w/ Aortic dissection, Nitroprusside useful, but must be used with Beta blocker- -reduces Intra Vent … Read more

Nitroglycerin / Nitrostat

– See After-Loading Agents given by Continuous Infusion; – Discussion:       – Angina, pulmonary HTN, venous dilatation;       – will produce modest decr in BP;       – has cardioprotective action by decr Preload and dilation of coronary arteries;       – if HTN remains, may begin concomitant Nitroprusside … Read more

Nimodipine

A trial of the effect of nimodipine on outcome after head injury.  The influence of the calcium channel blocker nimodipine on flap survival.

Nifedipine/Procardia

– See: Class IV Agents: – Discussion:       – for vasospastic or chronic stable Angina; Hypertensive crisis;       – inhibits coronary artery spasm;      – given Sublinngual for HTN crisis;        – combine with Nitrates for intractable Angina;        – HA are common initially; note reflex … Read more