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Dilution List     [ N - O ]
This document Copyright © 2005-06  D.McAuley, GlobalRPh Inc. All Rights Reserved.

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Drug Standard  Dilution Infusion Rate Diluents*

*Preferred solution is listed first.

NAFCILLIN 0 to 1 gram/ 50 ml
Over 1 gram/ 100 ml
Prepack:
    1 gram/50 ml iso-D5W
    2 grams /100 ml iso-D5W
30 min
60 min
D5W / NS
Stability/Misc.

EXP: 1 DAY (RT) ;  7 DAYS (REF)   Label: Refrigerate.   IM injection: 500 mg vial/ 1.8 ml SW or BS-SW or NS. 1 gram/ 3.4 ml. 2 gram vial/ 6.6 ml.    Mild to moderate infection: 500mg to 1 gram ivpb q4h or 1-2g ivpb q6h. Severe: 1-2g ivpb q4h.  Renal dosing: No dosage changes required for renal failure. || Renal + Hepatic dysfcn: decrease dose by 50%.
NALOXONE (NARCAN) 2 mg/ 500 ml
Fluid restricted: 4 mg/ 250 ml
Titrate.
Usual rate 0.4 mg/hr
D5W / NS
Stability/Misc.

Dosing: Treatment of narcotic-induced respiratory depression: 0.4 to 2 mg IV / SC/ IM repeat every 2-3 minutes as needed  (if no response after 10 mg --- ? narc). IV infusion: ( 2 mg/500 ml per manufacturer) Usual infusion rate: @ 0.4 mg/hr (100 ml/hr)-titrate to respiratory rate/ level of consciousness.
NESIRITIDE (NATRECOR)
Usual Diluents
D5W,   NS,   D5-1/2NS
Standard Dilutions   [Amount of drug]  [Infusion volume]  [Infusion rate]
[1.5 mg] [250 ml] [As directed]
Stability/Misc.

Restrictions: Restricted to Cardiology Consult

Preparation: Reconstitute one 1.5-mg vial of Natrecor by adding 5 mL of diluent removed from a pre-filled 250-mL plastic IV bag containing the diluent of choice. 
The following preservative-free diluents are recommended for reconstitution: 5% Dextrose Injection (D5W), USP; 0.9% Sodium Chloride Injection, USP; 5% Dextrose and 0.45% Sodium Chloride Injection, USP, or 5% Dextrose and 0.2% Sodium Chloride Injection, USP. 

Do not shake the vial. 
Rock the vial gently so that all surfaces, including the stopper, are in contact with the diluent to ensure complete reconstitution.  Use only a clear, essentially colorless solution. The IV bag should be inverted several times to ensure complete mixing of the solution. 

Label: Monitor BP closely. 
Stability: (reconstituted vials / solutions): 24 hours RT or REF. 

Dosing: IV bolus of 2 µg/kg (over 1 minute) followed by a continuous infusion of 0.01 mcg/kg/min. Withdraw bolus dose from the infusion bag. Higher initial dosages are not recommended. 

Calculation: Bolus Volume (ml) = 0.33 × Patient Wt (kg). 
Infusion Rate (ml/hr) = 0.1 × Patient wt (kg). There is limited experience with administering Natrecor for longer than 48 hours. 

Indications: IV treatment of patients with acutely decompensated CHF who have dyspnea at rest or with minimal activity. 

Actions: venous and arterial vasodilation (decreased PCWP etc), plus mild diuretic effect. 
NICARDIPINE (CARDENE) 25 mg/ 240 ml  (Total vol= 250 ml) Titrate D5W / NS
Stability/Misc.


EXP: 1 DAY (RT).    Higher concentrations can be used if the patient has a central line (25 to 50 mg / 100 ml). Treat hypertension: initially 5 mg/hr-if not effective increase dose 2.5 mg/hr every 5 to 15 minutes to a maximum of 15 mg/hour. Postop hypertension: 10 to 15 mg/hour for initial control, followed by maintenance infusion of 1 to 3 mg/hr. IV to PO conversion: 20mg orally q8h= 0.5 mg/hr; 30mg orally q8h= 1.2 mg/hr ; 40mg orally q8h= 2.2 mg/hr.   Supplied: 25 mg/10 ml ampule.
NITROGLYCERIN 50 mg/ 250 ml
0 to 100 mg/ 250 ml (glass)
(Max conc: 0.4 mg/ml)
Titrate D5W
Stability/Misc.

EXP: 1 DAY (RT)  Label: Do not Refrigerate      Dosing:  (HTN/ CHF/ angina): initial infusion rate 5 mcg/min. May increase by 5 mcg/min every 3 to 5 minutes until response. If 20 mcg/minute is inadequate, increase by 10 to 20 mcg/min every 3 to 5 minutes. Calculation of drip rate (50 mg/250 ml) ml/hr = mcg/min x 0.3 (eg 5 mcg/min=@ 2ml/hr ; 20mcg/min = 6 ml/hr etc.)
NITROPRUSSIDE (NIPRIDE) 50 mg/ 250 ml
(50 to 100 mg/ 250 ml)
Titrate D5W
Stability/Misc.



EXP: 1 DAY (RT)   Label: Protect from light.   Onset: immediate.  Duration: 1 to 10 minutes. Treat hypertensive emergency. IV infusion rate: 0.5 to 10 mcg/ kg/ min--titrate to BP. Dosing: Initial: 0.3 to 0.5 mcg/kg/min--increase by 0.5 mcg/kg/min increments. (usual dose: 3 mcg/kg/min-rarely need > 4 mcg/kg/min).  Note: when > 500 mcg/kg is administered by continuous infusion at > 2 mcg/kg/min--cyanide is produced faster than can be handled by endogenous mechanisms.  Maximum infusion rate: 10 mcg/kg/min. Calculation of drip rate 50 mg/250 ml (ml/hr) = wt (kg) x mcg/min x 0.3.    Dosage rates well within  product labeling have resulted in toxicity. Early signs of toxicity appear to be related to formation of cyanide.  [Nitroprusside + hemoglobin---(oxidation)---- met-hemoglobin ----cyanmet-hemoglobin + 4 cyanide ions-----liver (rhodanase & thiosulfate)----thiocyanate formation. Cyanide toxicity more likely if hepatic dysfunction is present;  thiocyanate toxicity more likely if there is renal dysfunction or prolonged infusion.  Cyanide toxicity symptoms: acidosis (decreased affinity of oxygen to hemoglobin resulting in anaerobic metabolism-increased lactic acid etc., tachycardia, coma, convulsions, almond smell on breath. Patients with decreased hepatic or renal function are at the highest risk of developing toxicity. Cyanide toxicity may cause death or irreversible ischemic injury as a result of profound hypotension and metabolic acidosis. To prevent cyanide toxicity, initial infusion rates should not exceed 0.3 mcg/kg/min, and maximum rates of 10 mcg/kg/min should not be maintained for more than 10 minutes. Monitoring: Monitor for cyanide and thiocyanate toxicity; monitor acid-base status (acidosis may be earliest sign of cyanide toxicity;  monitor thiocyanate levels if prolonged infusion (>3-4 days) or dose > 4 mcg/kg/min or renal dysfunction;   monitor cyanide levels in patients with decreased hepatic function. Cyanide toxicity: Patients exhibiting dyspnea and impaired mental status should be treated with the commercial cyanide antidote kit [ (1) amyl nitrate: inhale vapor for 15-30 seconds every 2 to 3 minutes. (2) Sodium nitrate: 300mg over 2-4 min (3) Sodium thiosulfate: 12.5g (25 ml of 50% solution) IV;  may repeat with  6.25 grams in 30 minutes), without waiting for chemical confirmation of toxicity. Some studies have used hydroxocobalamin which chelates cyanide (large doses required).   Thiosulfate infusions have been co-administered with nitroprusside to prevent toxicity.
NOREPINEPHRINE (LEVOPHED) 8 mg/ 250 ml
(4 to 16 mg/ 250 ml)
Titrate D5W
Stability/Misc.


EXP: 1 DAY (RT)     Used to maintain blood pressure in hypotensive states. Most potent vasoconstrictor (Norepi >>> phenylephrine). Dosage: initially 8 to 12 mcg/min -titrate to blood pressure ( Usual target: SBP: 80-100 or MAP=80). Usual maintenance: 2 to 4 mcg/min. Note: doses as high as 0.5 to 1.5 mcg/kg/min for 1-10days have been used in septic shock.) 
Calculation of drip rate 8 mg/ 250 ml (ml/hr) = mcg/min x 1.875.   Administer through a central line (large vein).
OCTREOTIDE ACETATE (SANDOSTATIN) 0 to 200 mcg/ 50 ml
600 mcg/ 250 ml (25 mcg/hr)
1250 mcg/ 250 ml (50 mcg/hr)
15-30 min
Usually 25 to 50 mcg/ hr.
NS
Stability/Misc.




EXP: 2 DAYS (RT).   Synthetic octapeptide. Mimics the action of naturally occuring somatostatin and decreases the secretion of gastroenterohepatic peptides that may contribute to adverse symptoms in patients with metastatic tumors, VIPomas. Octreotide-potent inhibitor of GH, insulin, and glucagon secretion. Also decreases splanchnic blood flow and inhibits release of serotonin, gastrin, vasoactive intestinal peptide. T1/2= 1.5hr (30x > than natural somatostatin). Dosing: Reduce output of GI fistulas: 50 to 200 mcg q8h Variceal bleeding: 50 mcg bolus f/b 25 to 50 mcg/hr (up to 5 days). Aids related diarrhea: (prolongs intestinal transit time): 100 to 500 mcg SC tid  Short bowel (ileostomy) syndrome: 25 mcg/hr infusion or 50 mcg SC bid. Diarrhea due to chemotherapy: 50 to 100 mcg SC tid  Irritable bowel syndrome: 100 mcg qd to 125 mcg SC bid   Acromegaly: 50 to 100 mcg SC tid Carcinoid tumors:100-600 mcg in 2-4 dd. VIPomas: 200-300 mcg/day in 2-4 dd.
ONDANSETRON (ZOFRAN) All doses / 50 ml 15 min D5W / NS
Stability/Misc.


EXP: 2 DAYS (RT or REF).   Dosing: 32 mg over 15min given 30min prior to chemo. Alternatively, give 0.15 mg/kg 30 minutes prior to chemotherapy, followed by repeat doses 4 & 8 hours post first dose.
OXYTOCIN (PITOCIN) 10 to 40 units/ 1000 ml Titrate LR / NS
Stability/Misc.


[Supplied: 10 units/ml-1 &10 ml vial]  Labor induction: 0.001 to 0.002 units/min; increase by 0.001 to 0.002 units q15-30min until contraction pattern is established(3-4 good contractions/10 min). Max: 0.02 units/min Postpartum bleeding: 3-10 units IM or 10 to 40 units by IV infusion in 1000 ml at a rate sufficient to control uterine atony. Abortion: Infusions of 0.01 to 0.02 units/min are normally admin.   Maximum doses should rarely exceed 0.02 units/min.

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This document Copyright © 2005-2006  D.McAuley All Rights Reserved.

 

 
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