USER MANUAL - Health Predictions
Contents
1. AUSTRALIAN CARDIAC DIAGNOSTIC SERVICE DR MAURICE ROSENBAUM M D Melb F R A C P HOLTERNET HOLTER MONITOR AND SIGNAL AVERAGED E C G SERVICE USER MANUAL CARE AND MANAGEMENT OF THE PATIENT UNITS Care of the Units Under no circumstances must units be exposed to dust physical trauma or water It is therefore most important that patients do not shower submerse themselves in water or expose the units to sandy or dirty environments as this may cause complete unit failure Setting up the Unit 1 Insertion of the flash card The card must be inserted before the battery with the proper sense that is with the arrow facing down and on the right hand side of the chip as you examine the chip in the Datrix 512 or upwards underneath and inside the unit in the DMS300 Under_no circumstances should the chip be placed incorrectly and forced If this is done it will do irreparable damage to the chip holder and the repair is expensive 2 After the chip is inserted a new battery should be inserted with the correct polarity 3 The cover should be replaced 4 Ifthe battery polarity is correct the unit will beep and after up to four minutes will beep again three to four times indicating that recording has started The clock starts at that time Unit Sounds The following sounds indicate faults e No beep after the battery is installed This indicates a flat battery incorrect polarity of the battery or2. x 2 4 x 1 Operating temperature 0 60 Centigrade Operating humidity up to 90 Shock absorbing capability up to 26 drop INTRODUCTION Australian Cardiac Diagnostic Service operates the Holternet service on an Australian wide basis In this service the patient units are applied by the general practitioners and the Australian Cardiac Diagnostic Service provides an analysis and reporting service This document covers all aspect of the use of the system Units can only be used under the orders of a medical practitioner AUSTRALIAN CARDIAC DIAGNOSTIC SERVICE DR MAURICE ROSENBAUM M D Melb F R A C P HOLTER MONITOR PATIENT RECORD Patient name Date Placement time Time of da Activities Events
3. FLASH CARDS The flash cards contain a dense data storage component and are relatively delicate At the conclusion of the monitoring session the card should be removed and sent with the patient notes and referral slip to Australian Cardiac Diagnostic Service ACDS PO Box 8218 Camberwell North VIC 3124 Mailing should be in a padded mailbag with sufficient protection against the damage from rough handling a typical specification is Australia Post Padded Bag 0 Extreme care should be taken that the bag is sealed Transmission of the chip by mail will not be required when the Internet Transmission system is completed ELECTRODES Electrode type Blue sensor type L 00 S is an appropriate electrode type however other electrode types may be suitable In choosing electrodes it is important that a type with long term adhesiveness be chosen do not use routine electrocardiogram electrodes as these will tend to fall off It is desirable but not essential that the skin be cleaned with spirit before the application of the electrodes Shaving of hair is rarely required and some variation in electrode placement is usually preferable Placement Placement of electrodes varies depending on whether a five or a seven lead unit is used Placement should be according to the electrode placement chart in Appendix II TERMINATION OF THE INVESTIGATION Duration of monitoring 1 The Health Insurance Commission requires a mi
4. Name Phone Mobile Operation Manager Giovanni 9819 4202 0416 164 430 ACDS Operations Manager Heather Pannell 9819 4202 0416 164 430 Medical Director Maurice Rosenbaum 9419 9700 0417 056 094 Technical Management Ray Jarvis 9841 8244 0416 025 868 ANCILLARY SERVICES Australian Cardiac Diagnostic Service provides the following ancillary services Telephone hotline If you wish to discuss any echocardiogram with the reporter the hotline is available during working hours on 03 1800 003 224 Newsletters Newsletters are provided from time to time on various cardiological topics of interest Other services Trans thoracic echocardiogram Carotid arterial doppler echogram Abdominal arterial doppler echogram Peripheral arterial doppler echogram Peripheral venous doppler echogram These services are available by mutual arrangement either in the general practice or in one of Australian Cardiac Diagnostic Service s other locations SLEEP APNOEA SCREENING The ACDS Holter monitor system allows the measurement of ventilation rate by assessment of the RR interval for sinus arrhythmia which is presumed to correspond with ventilation This forms an indication for Holter monitoring in individuals in whom sleep apnea is suspected It is emphasized that this is a screening test only a positive test may form the basis for further sleep investigation and a negative test should be clinically reviewed SIGNAL AVERAGED ECG By superim
5. the fact that the cellophane cover has been left on the battery e Continuous tone This indicates that the flash card is not installed or not installed properly e Two tone continuous alarm This indicates a faulty or improperly installed flash card The battery must go in last If an error signal occurs and you wish to re try the battery should be removed the flash card changed or re inserted and the battery then re inserted Always use a new battery otherwise the record may be short or inaccurate Event Button All DMS 300 series recorders have an event button at the top of the recorder next to the patient lead wire inputs Instruct the patient to push this button any time he she feels something This signal is automatically put on the SANDISK compact flash card When you analyze the patient data the time of the event along with an 8 second ECG strip will be listed in the ECG strip category Belting and Placing the Unit The unit is supplied with a belt and pouch The belt may either be placed around the neck or around the waist and its length can be adjusted Care should be taken that the belt does not produce discomfort to the patient or pressure the neck Cleaning the Unit and Pouch The unit and pouch may be cleaned as follows 1 Alcohol may be used to clean the unit as often as desired 2 The pouch may be washed in cold water with a mild detergent and left to dry before use CARE AND MAILING OF THE
6. E UNIT The reading unit is sophisticated and reads virtually every heartbeat recorded Reporting is predominantly in terms of abnormalities but other variable as follows are routinely provided 9 Complete heart rate record Heart rate variability record Ventricular and supra ventricular ectopic rate per hour Any abnormal beats or runs of beats STT changes in each of the leads Five minute interval heart rate average RR interval variability 5 minute interval average Heartbeat power function Ventilation rate 10 Signal averaged ECG 11 Automated report 12 Cardiologist report This data is normally returned by mail but may be returned by fax as the report or as the full disclosure DESCRIPTION OF THE PATIENT UNIT Australian Cardiac Diagnostic Service ACDS uses Datrix 512 and DMS300 Digital recorder units These are small state of art solid state devices that record three channels of data on a removable data card flash card IDE PCMCIA compact flash through five leads Datrix 512 or 7 leads DMS300 At the present time the chip is posted to Australian Cardiac Diagnostic Service and the reported full disclosure of the Holter monitor and if requested the signal averaged ECG is either faxed or mailed to the practitioner A development program is underway for the Internet transmission of the data and this data transmission should be available in 2002 Physical aspects of the unit Weight 4 oz Size 5
7. ary sheet but keep them brief Do not forget to indicate the time of the event Activate the event marker button on the top of the unit of you wish to draw attention to an event Removal of the Unit Removal of the unit will either be by you your medical practitioner or his staff If you remove the unit do not pull on the leads but remove by working off the press studs from the electrodes When the unit is disconnected from the electrodes you may remove the electrodes either at that time or in the shower and dispose of them Return of the Unit The unit should be returned immediately after removal to your medical practitioner or by arrangement REMOVING THE SANDISK COMPACT FLASH CARD There is a black slide bar adjacent to the SANDISK Compact Flash Card that extracts the SANDISK Compact Flash Card from the digital Holter recorder Pushing down on the slide bar does not accomplish anything To extract the SANDISK Compact Flash Card push the slide bar into the recorder in the direction of the top of the recorder where the electrode lead wires are inserted DESCRIPTION OF UNIT The DMS digital Holter recorders are 50 the size and weight of cassette Holter recorders measuring 4 8 x 2 8 x 0 9 and weighing 5 ounces with the battery and flash card loaded The recorder fits conveniently into a small pocket or can be worn with its carrying case The DMS digital Holter recorders use SANDISK Compact Flash Cards as a recording medi
8. ay be confirmed by Holter monitoring of the ST T segments PACEMAKER MONITORING Pacemaker capture and any major changes in pacemaker function can be defined by Holter monitoring if there is a clinical suspicion of partial or complete pacemaker failure Conditions definable are indicated under the heading sleep apnea screening and signal averaged ECG FINANCIAL DETAILS AND CONDITIONS The medical practice may choose any of the following methods of operation 1 Outright ownership of the Holter monitor unit In this situation the practice purchases a patient unit and two flash cards The unit is applied within the practice and the flash cards are posted later transmitted for reporting The practice charges the patient and ACDS charges the practice 60 GST for reporting the Holter monitor and an additional fee of 20 if signal averaged ECG is reported 2 The unit may be lent by ACDS on a trial basis In this situation all billing is done by ACDS 3 ACDS offers Holter monitoring on request with application by our technician in the practice with billing by ACDS Financial Details Disposable Battery and disposable electrodes per study 5 00 approx Electronic processing and reporting fee to ACDS Holter monitor per study 75 00 inc GST Fee to general practice Holter monitor Item 11709 Rebate 125 80 Schedule 149 50 Application and removal of the unit may be associated with practice visits attracting a fu
9. nimum of 12 hours monitoring before a Holter monitor rebate can be claimed 2 Optimal recording information is for 24 hours after which the recorder will automatically terminate recording 3 A minimum of 45 minutes of running time is required before the unit is processable Anything less than 45 minutes will not produce a usable record Removal of the Unit Removal of the unit and electrodes may be performed by the practitioner his staff or the patient At the time of removal the leads should be removed from the electrodes by disconnecting the press studs from the electrodes by gently working the press studs and without pulling on the leads Electrodes may then be removed either at the time of removing the unit or at the time of showering and discarded Duration of data storage Data storage on the flash cards is indefinite and the flash card memory will not deteriorate PATIENT ACTIVITIES RECORD AND EVENT MARKER Activities Patients should be advised that all activities are permitted with the exception of those that may damage the unit Patient Record The patient should be encouraged to fill out notes or any episode during the monitoring period particularly transient episodes Record notes should include the time of any event and for this to be accurately assessed the time needs to be measured from the beginning of the recording since the recorder clock will only commence running after the beeps registration Event may the
10. posing and averaging about 100 too 200 beats it is possible to obtain high definition of the electrocardiogram Subtle changes in this signal provide evidence of myocardial disease and proneness to arrhythmias SPECIFIC CARDIAC CONDITIONS DETECTED BY HOLTER MONITORING BRADYARRHYTHMIAS Bradyarrhythmias should be suspected in individuals who suffer transient loss of consciousness transient cerebral symptoms or consciousness of cessation of the heartbeat In this situation monitoring may reveal complete or partial heart block sinus bradycardia sinoatrial block or other suspicious distal blocks such as right bundle branch block with left anterior hemiblock Holter monitoring is particularly effective in defining bradyarrhythmias and because of their potentially fatal nature every effort should be made to diagnose these in the presence of the symptoms defined above TACHYARRHYTHMIAS These are usually manifest by the symptom of palpitations with consciousness of the heartbeat irregular heartbeat fast heartbeat or transient loss of consciousness Since tachyarrhythmias are usually intermittent and often not detected by the patient monitoring may reveal short bursts of atrial fibrillation atrial tachycardia ventricular tachycardia or ventricular fibrillation without symptoms in individuals who also suffer symptomatic episodes TRANSIENT ISCHAEMIA If there is a suspicion of coronary artery disease based on the presence of chest pain etc this m
11. refore be indicated by either of the following means a The time after the beginning of recording b The time of day provided that the time of the commencement of the recording is recorded Patient should be advised to keep their notes brief and these notes should be mailed with the flash card Event marker If the patient uses the event marker on the top of the unit it will encode a signal that is eventually printed on the disclosure Appendix III is a Holter monitor patient instruction sheet and this may be photocopied and supplied to the patients Appendix IV is a patient record sheet and this may be photocopied and supplied to the patients DISPOSABLES REPLACEMENTS AND SERVICE Disposables The following stock of disposables should be kept by the clinic Electrodes Blue Sensor type LOO S or equivalent Batteries 9 volt alkaline batteries for Datrix 512 or 1 5 volt AA batteries for DMS 300 Stationery Xerox copies of Holter monitor patient instruction sheets see appendix II and patient record sheets see appendix IV All disposables These may also be available from your preferred supplier Replacements and Service In general the units will last indefinitely if not mishandled see notes on card insertion and reference to water etc The predominant cause of failure is lead failure and leads are relatively inexpensive to replace If possible Australian Cardiac Diagnostic Service will loan a spare uni
12. rther fee and rebate to the practitioner Conditions of operation 1 Australian Cardiac Diagnostic Service will make every effort to find a financial system that is most suitable for the practice Within reasonable limits practices may change their method of service as required 2 Until fully paid for the Holter monitor patient unit remains the property Australian Cardiac Diagnostic Service 3 The Australian Cardiac Diagnostic Service fees may alter from time to time 4 Australian Cardiac Diagnostic Service takes no benefit on the sale of the units INDICATIONS FOR HOLTER MONITORING Introduction Because of the high incidence of sudden death and the potential seriousness of arrhythmias and strokes Holter monitoring should be regarded as a critical test in all patients with a predisposition to or a suspicion of arrhythmias or heart block This is of particular importance with the recognition of intermittent atrial fibrillation as a cause of stroke the development of powerful anti arrhythmics and the clearly the demonstrable benefit of implantable defibrillators CLINICAL CONDITIONS SUGGESTING NEED FOR HOLTER MONITORS High Blood Pressure High blood pressure particularly when associated with left ventricular hypertrophy is associated with an increased incidence of serious arrhythmias and atrial fibrillation Cardiac Failure Recent findings indicate that the mortality from cardiac failure can be reduced by approximately 30 b
13. t if unit failure occurs Service Enquiries All enquires should be directed as follows Either ACDS Victoria ph 03 9819 0099 PO Box 8218 fax 03 9819 4699 NORTH CAMBERWELL VIC 3124 OR Ray Jarvis ph 0416 025 868 PO Box 1234 fax 03 9841 7160 EAST DONCASTER VIC 3109 Unit Manufacturer Datrix ph 1 760 480 8874 316 State Place ESCONDIDO CA 92029 USA REMOVING THE BATTERY Upon completion of the Holter recording disconnect the recorder from the patient To remove the battery door lightly press on the middle of the door and slide the door out and over the recorder chassis Place your index finger in the notched area next to the battery Gently pop the battery out of its compartment NOTE Do not move the battery up and down in its compartment This may cause the recorder to turn off and on starting the initialization of a new recording and erasing the flash card data HOLTER MONITOR PATIENT INSTRUCTIONS The Unit The unit you have been provided with its delicate and must not be handled roughly or exposed to water dust or sand Under no circumstances should you have a shower or bathe with the unit on and if it is raining you should wear it under a coat The unit should not be subjected to physical stresses Activities All routine activities can be performed with the unit on if they are not of the type that are likely to cause damage to the unit see above Diary and Events Record any unusual events in the di
14. t to make 2 1 2 minutes after the beep you will hear 3 beeps This means the recorder has completed its initialization and erased the flash card The recording of data starts after the 3 beeps BATTERY INSTALLATION The recorder is powered by a quantity of one AA 1 5v Alkaline battery There is a minus and plus side for the battery insertion Notice the plus and minus marking in the battery compartment Insert the battery with the plus on the battery matching the plus in the battery compartment NOTE Insertion of a non alkaline or used alkaline battery will probably result in a blank or short recording The SANDISK Compact Flash Card can only be inserted in the correct position All other incorrect positions are blocked from being inserted The red label side of the SANDISK Compact Flash Card should face upward Slide the SANDISK Compact Flash Card into the slot until you feel and hear complete insertion Upon complete insertion the black side bar next to the SANDISK Compact Flash Card will line up along its side FLASH CARD INSTALLATION Remove the battery door from the back of the digital Holter recorder The compartment exposed after removing the battery door is for the SANDISK Compact Flash Card and the AA 1 5v Alkaline battery Notice the CE label inside this compartment Arrow 1 shows the direction for the placement pf the flash card and Arrow 2 shows the direction of the battery location ADMINISTRATIVE STAFF Title
15. um This technology allows the ECG recording to be substantially better than cassette recordings The use of flash cards allows for exact sample location throughout the Holter recording The R wave peaks P waves and ST Segment are precise and the heart rate and HRV analysis are more accurate Also the time of day is precise throughout the Holter recording The digital Holter recorder can generate 2 lead 3 lead and 12 lead ECG strips The high maintenance cost of Holter cassette recorders is a thing of the past There are no moving parts to wear out Due to the long life of the SANDISK Compact Flash Cards the cost is significantly lower in the long run when compared to cassette tapes A powerful microprocessor chip contains much of the capability of the older cassette technology This microprocessor chip is in a removable socket so that updating in the future is simply a quick exchange of the chip CLOSING THE BATTERY DOOR To close the battery door place the door over most of the battery compartment leaving a gap of only about 1 4 inch Push the battery door compartment until both sides are flush with the sides of the recorder Slide the door the remaining inch until the battery door snaps closed DO NOT TRY TO SLIDE THE BATTERY DOOR FROM THE BOTTOM TO THE TOP The recorder will beep after the SANDISK Compact Flash Card and the battery is inserted For 60 seconds nothing will happen allotting for any adjustments the technician may wan
16. y the use of an implantable defibrillator This clearly reinforces the high incidence of serious arrhythmias in this group and its role as a preventable terminal event Myocardial Disease Myocardial diseases including ischaemic heart disease and cardiomyopathy have a high incidence of arrhythmias which is presumed to form the basis of sudden death in these groups Valvular Disease and Atrial Dilatation The incidence of undefined atrial fibrillation is high within the community particularly in the elderly and in hypertensive individuals with some left atrial dilatation on the echocardiogram While short runs of atrial fibrillation are not of haemodynamic significance these are of clinical significance as a basis for stroke many previously defined thrombotic strokes are now defined as due to atrial fibrillation with embolisation Because of the easy reversibility of this situation with anti arrhythmics Aspirin or anti coagulants it is important that short runs of atrial fibrillation be defined in this situation Short runs Cardiac Irregularities While the incidence of ventricular ectopics and atrial ectopics in the community is very high in some individuals these are harbingers of more serious arrhythmias Blackouts amp Episodes of dizziness These may be the harbinger of short transient episodes of blackout or dizziness may be symptomatic of cessation of cardiac function due to SA block or AV block or arrhythmias DATA ACQUIRED BY TH
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