Insulin Initiation & Titration Guide & Record Contents Page Introduction……………….......................................1 Adjusting dosages……………………………………3 Sick day rules…………………………………………5 Hypoglycaemia……………………………………….6 Adjustment record …………………………………...8 & 9 Introduction For many years there have been conflicting opinions over whether or not insulin titration is prescribing. The purpose of this document is to clarify how insulin is prescribed and what is meant by a ‘prescribed range’. This document is for intended for use by all registered nurses in St Georges NHS Trust involved in insulin dosage titration. However, all health professionals using this guide, or who have undertaken additional training must still act within their clinical competencies, NMC standards and scope of practice, and where uncertain must seek further guidance. It is recommended that all health professionals involved in prescribing or administering insulin in the Trust should undertake the e-learning course for insulin use which can be found through the following link: http://www.diabetes.nhs.uk/safe_use_of_insulin/elearning_course/ The Nursing and Midwifery Council (NMC) “Standards for Medicine management” (2008) states the following in relation to assessing and titrating medication: Standard 9: Assessment As a registrant, you are responsible for the initial and continued assessment of patients who are self-administering and have continuing responsibility for recognising and acting upon changes in a patient’s condition with regards to safety of the patient and others. Standard 13: Titration Where medication has been prescribed within a range of dosages, it is acceptable for registrants to titrate dosages according to patient response and symptom control and to administer within the prescribed range. It is also stated that nurses or midwifes who have successfully completed a non medical prescribing course …”must only prescribe drugs that are within their area of expertise and level of competence….” Using this record This record should be given to each patient who may require the assistance from a health care professional for administration of insulin when commenced on insulin. It is for the initial prescriber to ensure this is done. The insulin titration record can be photocopied, attached to the booklet and kept in the patient’s notes. 1 Insulin Commencement Dosage Guidelines: (please refer to Insulin Start Group for further information) The starting dose can be calculated according to body weight, most commonly 0.3 to 0.5 units of insulin per Kg of body weight. However, Individual assessment to the person’s circumstances must always be considered when prescribing insulin dosages. The term ‘units’ should be used in all contexts. Abbreviations, such as ‘U’ or ‘IU’ must not be used. Bisphasic (Premixed) Insulin – usually two thirds of the calculated dose is administered in the morning and one third in the evening, e.g. for a patient weighing 60kgs the calculated initial starting dose will be a total daily dose of 20 units with 12 units with breakfast and 8 units with the evening meal. Basal Bolus – usually 50% of the calculated dose is the basal and 50% is the bolus divided up between the meals, e.g. for a patient weighing 60kgs you would usually start on 20 units a day with 10 units given as the basal and the remaining 10 units is for the bolus doses with the meals (e.g. 4 units with breakfast, 2 units at lunch and 4 units with the evening meal). Once daily intermediate/long acting insulin with Oral Hypoglycaemics (OHA) The starting dosage is usually 6 to 10 units of insulin at bedtime, depending on the Fasting Blood glucose (BG) level. However the timing and dosages may also vary depending on the individual assessment and insulin type used. Insulin delivery devices; Various delivery devices are available depending on the type of insulin prescribed, and presented as 3ml prefilled pens, 3ml pen cartridges, 10ml vials, along with respective needles or syringes required. Each brand has a registered name for their device. Counsel patient on use prior to commencing insulin, ensuring they are comfortable and familiar with the device. Appropriate needle length and make should be advised Patients should be advised on the safe disposal of syringes, needles. Storage of insulin; Check individual manufacturer’s storage recommendations. Usually; Unused/unopened insulin should be stored in a refrigerator (2–8°C) After opening and during use, insulin can be kept for 4-6 weeks at room temperature. 2 Adjusting insulin – considerations The aim of insulin therapy is for patient, where possible, to be able to self administer and dose titrate in order to achieve the patient’s target blood glucose levels. Various factors can affect glucose levels. Review the following as indicated before adjusting the dosage: Blood glucose monitoring –check accuracy, review profile & symptoms to identify any problem areas. Is correct insulin being taken Is the prescribed medication being taken (and at appropriate times) Dosage – is the patient “dialling” up the correct amount? Is the timing of insulin injections appropriate to that type of insulin Is insulin dose distribution appropriate to patients needs Injection sites – check for lipodystrophy / lipohypertrophy Is the insulin delivery device working correctly? Injection technique, needle size, injection sites Is insulin being stored correctly/in date Are there other medications affecting glucose levels eg Steroids Dietary intake – any increase/decrease in appetite/type of foods/drinks in relation to insulin type Activity levels changed Alcohol intake Illness Other issues eg stress/depression/patients understanding Key points: Never change the dose of insulin based on a ‘one-off’ reading, look for a pattern of high or low readings over a period of 3-7 days, except where hypoglycaemia is occurring on a regular basis. Ideally change one dose at a time to avoid confusion, and allow time for results of adjustment to become apparent Adjust for low blood glucose levels first ~ never treat high blood glucose levels if hypos are present or suspected. Consider the issue of rebound hyperglycaemia 3 Adjustments to insulin are usually made by either increasing the dose by 10% the problem is hyperglycaemia, or decreasing by 10% if there is hypoglycaemia. NB: Insulin sensitivity can vary greatly from person to person. Where the individual dose is >50 units, a 20% adjustment might be necessary. If, through titration, insulin dose is likely to exceed an increase of 50% of original dose, please discuss with the diabetes nurse specialist. IMPORTANT All insulin doses must be measured and administered using an insulin syringe or specific insulin pen device, with units clearly marked. (Except if patient is using Continuous Subcutaneous Insulin Infusion CSII) Intravenous syringes must never be used for insulin administration. 4 Adjusting BD pre-mixed insulin (eg; Novomix 30, Humalog Mix 25, Humalog Mix 50, Humulin M3) If period between breakfast and evening meal if outside target, adjust morning insulin If period between evening meal and pre breakfast is outside target evening insulin Pre-breakfast blood glucose reading Adjust evening insulin by: Pre evening meal blood glucose reading Adjust morning insulin by: Below patient target - 10% Below patient target -10% Above patient target +10% Above patient target +10% Adjusting basal insulin (eg; Glargine, Levemir, Isophane) If pre-breakfast blood glucose outside target ~ adjust Basal insulin as shown below :Pre-breakfast Blood Glucose Adjust basal insulin by:- Below patient target - 10% Above patient target + 10% Adjusting bolus insulin (short/rapid acting) (eg; Actrapid, Humulin S, Novorapid (aspart),Humalog (lispro), Apidra (glulisine) N.B: Blood glucose levels 2 hour reflects the pre-meal bolus insulin Pre-meal Blood Glucose:- Adjust bolus insulin by:- Below patient target - 10% Above patient target + 10% 5 Sick Day Rules During illness or infection blood glucose levels often rises even though the patient is not eating. Never stop insulin or tablets Test blood glucose 2-4 hourly Test urine for ketones Seek further advice if unsure If necessary substitute meals with simple foods like: • Soup and bread • Milk pudding, custard or small measure of ice cream • Breakfast cereal and milk • Fruit yoghurt • Dietary supplement, e.g. Complan or Build-up If unable to tolerate food, sip one of the following every two hours • 1/2 glass lucozade • 1 glass ordinary lemonade • 1 glass fruit juice Drink plenty of fluids. Make this up with sugar free drinks or water. During illness or infection blood glucose often rises. Continue usual insulin dose, but give extra as below whilst illness is present: Below 10mmol/l Take usual dose of insulin Between 10 and 15 mmol/l Take 4 extra units of quick acting insulin Between 15 and 20 mmol/l Take 6 extra units of quick acting insulin More than 20mmol/l Take 8 extra units of quick acting insulin These figures are a guide only. NB: the presence of moderate to large amounts of Ketones may indicate the need for need for admission, particularly if the patient is dehydrated, blood glucose levels continue to rise, or vomiting continues. Always seek medical advice if unsure to avoid serious emergencies developing. 6 HYPOGLYCAEMIA - TREATMENT GUIDE Hypoglycaemia is a blood glucose level of less than 4mmol/l. Whenever possible, check blood glucose level prior to treatment. If asymptomatic, treat but repeat test. NB: lack of hypo awareness can develop in some people especially with longer duration diabetes or repeated episodes of hypoglycaemia. MILD Patient conscious and able to swallow. Symptoms may include: Trembling, sweating, hungry, tingling, headache, anxiety, palpitations, nausea, forgetfulness. MODERATE Patient conscious and able to swallow, but in need of assistance. Difficulty concentrating, confusion, weakness, giddiness, drowsiness, unsteady, headache, dizziness, difficulty focusing and speaking. SEVERE Patient unconscious and unable to swallow. Fitting STEP 1 Give 10-20 g of glucose orally Ensure gag reflex is present Give 10-20 g of liquid glucose orally Consider use of Glucose Gel Call for emergency assistance 999 -Check airway -Place patient in recovery position -Patient will require IM Glucagon or IV Dextrose STEP 2 Wait 15 minutes and recheck glucose levels, and record. If reading is still below 4 mmol/L, or if no physical improvement, repeat STEP 1. Once patient is conscious, give sips of Glucose gel or Lucozade. Recheck glucose level every 15 minutes to ensure increase to at least 4 mmol/L. Once glucose level is over 4mmol/ls, ALWAYS FOLLOW UP WITH A SNACK to help prevent recurrence (Snack eg: bread, biscuits, glass of milk, banana, small carton of fruit juice). Review cause of hypoglycaemia to help prevent recurrence, or seek advice from Diabetes Specialist Teams. If 2 hypos within 48 hour period further investigation is required NOTE: If Insulin is due, it should NOT be omitted following hypoglycaemia – ensure blood glucose is over 4mmol/ls and the person is able to eat before administering the insulin . Avoid use of correction doses for 24 hours following hypoglycaemia 7 Examples of suitable food and fluid to treat hypos Name of drink 1 Picture 10-20g 2 carbohydrate Lucozade 60-115 mls 380ml (Up to 1/3 of bottle) Cola 500ml bottle Name 3 of food Picture 10-20g carb Jelly Beans 8-16 90-180 mls (Up to 1/3 of bottle) Liquorice Allsorts 3-5 Water with added sugar or honey 2-4 Teaspoons of sugar or honey in ½ glass of water Jelly Babies 2-4 Ribena 288ml carton 72-114ml (up to1/2 carton) Dextrosol tablets 4-7 Follow this immediate acting food with something more substantial such as a sandwich or meal. 8 INSULIN RECORD Patient details Patient Name:…………………………………………………………………….. DOB: ………………………………………………………………………………. NHS Number………………………………………………………………………. Health professional details GP and telephone number:………………………………………………………. DN and telephone number…………………………………………………………. Wandsworth Diabetes Specialist Team numbers: St Georges Thomas Addison Unit: 0208 ……. Queen Mary’s Beta Cell Unit: 0208 487 6447 Community Diabetes Nurse Specialist: ………………………………………………………….. Starting Insulin details Date Type of insulin insulin started Starting dosage Insulin device presentation Needle type and length Other diabetes medications Blood glucose target Pre and post meal NB: For Insulin titration guide see pages 3 - 4 & document on the adjustment sheet Is patient able to self administer insulin? ………………………………………………… ……………………………………………………………………………………………………… 9 INSULIN ADJUSTMENT RECORD Date Adjustment Rationale Advised by 10 Further reading: NHS Clinical Knowledge Summaries - Clinical topic - Insulin therapy in type 2 diabetes...Principles of dose titration: www.cks.nhs.uk/insulin_therapy_in_type_2_diabetes Trend Uk ‘An Integrated Career and Competency Framework for Diabetes’ 3rd Edition www.trend-uk.org/TREND_3rd.pdf 22/8/11 11