Welch Allyn SP-2 Service manual

SP-2 Hand-Held Spirometer

Cardio Menu

Service Manual

Introduction 2 Procedure Overview 4 Main Menu 5 Entering Patient Data 6 Selecting the Test 9 Taking a Test 12

Forced Vital Capacity (FVC) Test 12 Slow Vital Capacity (SVC) Test 13 MVV Test 13

Screen Information 14

Curves 14 Tabular 15

Post-Medication Tests 16 Memory 17

Menu 19

Displaying Test Data From a Stored Patient 20 Obtaining a Printout 21 Spiro Settings (User Identification) 22 Spiro Settings (Printout) 23

Section 1

Spiro Settings (Device) 24

Normals 25

Changing the Mouthpiece 26 Calibration 28

Calibration Procedure 29

Explanation of Measured Values 32 Care & Maintenance 34

Self-test 34 Lifed Items 34 Cleaning the Unit 35 Batteries 35

Spirometry Tips - How To Do It and Common Pitfalls and Problems 36

How to Do It 36 FVC 37 FEV1 38 Patient-Related Problems 39

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Introduction

The SP-2 Hand-Held Spirometry Unit features three

pulmonary function testing modes for the measurement of inspiratory and expiratory values. The large LCD screen instantly show pulmonary test results and provides a clear and comprehensive result analysis in a number of different formats. All tests and settings are initiated via an easy to use interface.

The sensor mouthpiece is a disposable, single patient sensor/filter assembly eliminating the need to clean the sensor after each use.

All functions and settings are selected via menus displayed on the LCD with direct test function menu options for measuring the following:

n FVC Forced Vital Capacity

n SVC Slow Vital Capacity

n MVV Maximum Voluntary Ventilation

(Option)

1. Battery Compartment

Two, 1.5V non rechargeable AA batteries

2. 12 Alpha numeric keys

For text / numerical input e.g. patient data, calibration data etc.

3. Three Direct Function keys: Print / Send. This key initiates transmission over the infrared interface

to a compatible printer using the standard data association protocol. LCD Backlight Key - The middle key is the ON/OFF control for the

LCD backlight. The backlight is automatically switched off after approximately 10 seconds.

The START/STOP (and ON/OFF) key has three functions:

n Switches the unit on. n When the unit is switched on and in test mode, this key starts /

stops a measurement.

n When the unit is switched on and not in test mode, this key

switches the unit off (press for 2-3 seconds).

4. Four (menu navigation/selection) Function keys: LEFT / RIGHT keys - The functions of these keys depends on the

menu displayed and is shown in the bottom line of the LCD line. In general however, the left softkey selects the functions and the right key acts in a similar way to the 'enter' key in a PC. See following pages.

The UP and DOWN keys move the cursor in the menu fields to highlight the menu options. These two keys can also act as extra function keys - in this case the function is shown in the bottom line of the LCD line.

5. LCD

6. Infrared Data Interface (not seen)

7. Disposable Mouthpiece

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Procedure Overview

Main Menu

1. Press the ON key. The Introduction screen is displayed:

09:53

04.05.00

MENU PATIENT

Press the left soft key to enter the MAIN MENU Press the right soft key to enter the patient screen

(Page 5) (Page 6)

Battery Indicator - Displayed when

battery life is limited - change the batteries as soon as possible.

When this symbol flashes, it indicates critical battery voltage. Tests can be completed but all other functions ( e.g. printing, backlight) are inhibited - change batteries immediately.

Softkey Line - Defines the left / right softkey functions

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Main Menu

If using the option for the first time select the required spiro settings and Spiro Standard. Select 'Settings' from

the main menu to display the Spiro settings - details of all spiro settings are given on the following pages. All these settings are stored when the unit is switched off.

PATIENT TEST MEMORY CALIBRATION

SETTINGS

EXIT ENTER

EXIT/MENU Return to introduction screen/main menu

Details of all settings are detailed later.

CURSOR UP /DOWN Move cursor (highlight bar) up/down

ENTER Select highlighted item

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Entering Patient Data

2. From the introduction screen press the RIGHT soft key to enter patient data. (From the main menu, highlight 'patient' and press the RIGHT soft key).

Pat-Name: Gender: M (M/F) DAVID OVER Height: 71.7 ins Pat-Number: Weight: 179 lbs 123-456-00 Ethnic: C (C/H/B/A) Born: Smoker: Y (Y/N) 05-04-43 (mm-dd-yy) Room: 5

MENU ENTER MENU ENTER

3. Select a new patient or change existing patient data with the up/down soft keys and press the RIGHT soft key to confirm.

For a required character, a key must be pressed one or more times dependant on whether in a numerical or letter field. For example in an alpha numeric field (e.g. patient name) the '2' key is: 1st press 'A'; 2nd press 'B'; 3rd press 'C'; 4th '1'; 5th 'A' etc.

In a numeric field the number comes first.

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NEW PATIENT

CHANGE DATA

MENU Return to main menu

Toggle between choices

Delete last character entered or Toggle between choices

ENTER Enter details / Go to next line

Entering Patient Data

Each printout is complete with the name and other information concerning the patient. Before beginning a recording, the patient data should be entered. The following parameters have to be entered:

Pat-Name: Alpha-numeric field Pat-Number: Alpha-numeric field Born: Enter patients` data of birth in the order shown (defined in system

settings)

Gender: Select `M` (male) or `F` (female). Use up/down toggle

keys to change.

Height: Height in centimeters (numeric field)

(or inches (scaled to 1/10 inch), depending on unit setup)

Weight: Weight in kilograms (numeric field)

(or pounds, depending on unit setup).

Ethnic: Enter patients race - either:

W/B: `W` for White, `B` for Black or C/H/B/A: `C` for Caucasian, `H` for Hispanic, `B` for Black;

`A` for Asian. Use up down toggle keys

Smoker: Enter `Y` (yes) or `N` (no). Use up/down toggle keys

to change.

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Room: Alpha-numeric field

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Procedure Overview

4. Insert a new disposable sensor.

See page 26

WARNING

THE DISPOSABLE MOUTHPIECE IS DESIGNED FOR ONETIME USE TO MINIMIZE THE DANGER OF CROSS CONTAMINATION - DO NOT USE THE MOUTHPIECE FOR

MORE THAN ONE PATIENT.

5. Calibrate the Unit The unit must be calibrated

n At the beginning of each day

n When a significant temperature or pressure

difference occurs

The calibration procedure is detailed later.

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Selecting the Test

6. From the main menu Select the Test Option

PATIENT

TEST

MEMORY CALIBRATION SETTINGS

EXIT ENTER MENU ENTER

FVC TEST

SVC TEST

MVV TEST

PRE POST

EXIT/MENU Return to introduction screen/main menu

CURSOR UP /DOWN Move cursor (highlight bar) up/down

ENTER Select highlighted item

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Taking a Test

7. For all tests the procedure is the same The message `

before the measurement:

hold the sensor still

*** press START ***

appears on the display.

8. Press the START / STOP key once

The device must be held upright and quite still and no air should be breathed into the device for at least one second before the START key is pressed.

As soon as the patient starts to breath into the Mouthpiece, the unit begins to record the flow. The corresponding curve is represented on the display. The break-off point for the measurement is reached automatically (or when the Stop key is pressed).

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Taking a Test

Audible indications are given for each test as follows:

FVC A beep is given at the end of exhalation

(indicating that inhalation (if required) can begin), and at the end of the test.

SVC A beep is given when no flow is detected

(end of test) or in any case after 30 seconds.

MVV A beep is given after 12 secs (end of test).

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Taking a Test

WARNING: FALSE MEASUREMENTS CAN RESULT WHEN THE SENSOR IS NOT HELD VERTICALLY - ENSURE THAT THE UNIT IS HELD UPRIGHT WHEN

TAKING TESTS.

CAUTION: The SP-2 is a sensitive measuring device and must always be handled with care. Do not allow it to be dropped or

subjected to any sudden blows.

Forced Vital Capacity (FVC) Test

For this test the patient must exhale as quickly as possible from the time of starting the test.

Note: The FVC test employs the `Back extrapolation` method. If the extrapolated volume is too large (>0.15 liters or 5% of FVC),

then a warning appears on the display

To carry out the test for Forced Vital Capacity (FVC), highlight the `FVC` option in the test menu (previous page) and press the Enter key. The corresponding coordinate presentation appears on the display.

The patient must exhale as quickly as possible from the time of starting the test so be sure that he understands what is required of him. If inspiratory measurements are required, the exhalation can be immediately followed by a maximum inhalation. The inspiration results will be given on the printout.

The coordinates represent the graph on which the curve will be drawn with the respiratory volume in liters being represented on the vertical axis and the time in seconds on the horizontal axis.

ALSO SEE `SPIROMETRY TIPS` AT THE END OF THIS BOOK

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