The WheezoMeter™ analyzes 30 seconds of breath sounds using advanced signal processing algorithms to detect, quantify and objectively document the presence of wheeze and its extent, the WheezeRATE™.

• The WheezoMeter™ is calibrated and validated as determined by consensus of a panel of experts who evaluated and scored many recordings for presence of wheeze.
• The WheezoMeter™ uses a cascade of 6 proprietary technologies to “defend” the signals against false detection of ambient noises as wheeze

WheezeRATE™: Proportion of the respiratory cycle duration occupied by wheezing – Tw/Ttot

Acoustic Respiratory Monitoring

The WheezoMeter™ can be used by:

• Physicians: Pediatricians, GPs, internists, asthma/allergy specialists.
• Nurses: Emergency, ICU/PICU/NICU, ward, asthma nurses, school nurses.
• Technicians and Paramedics: Respiratory therapists, EMS personnel, military medics, sports paramedics, occupational health officers.
• Patients and Caregivers: Under guidance of a healthcare professional.

The WheezoMeter™ design is based on ergonomic humaninterfacing principles as dictated by functional and anatomical requirements in a state-of-the-art attractive form.

• Facilitates the correct anatomical placement of the device in contact with the trachea at the correct contact force.
• Provides stable contact with the skin surface for the duration of the test.
• Isolates the measuring head and sensor from vibrations and tremor of the hand holding the WheezoMeter™.

WheezoMeter™ uses:

• Obtain a “spot check” measurement of present wheeze activity, any time, any place, as often as needed without any patient effort.
• Measure WheezeRATE™ before and after administration of a bronchodilator (“pre-post” test).
• Communicate status of homebound or remote patient to physician or healthcare professional.

Personal WheezoMeter™ Specifications

Asthma is reversible airflow obstruction, associated with a state of increased responsiveness of the tracheobronchial tree to many different stimuli (that do not affect normal individuals).
…Patients experience dyspnea, cough and wheezing as the major complaints.

Tintinalli: Emergency Medicine, American College of Emergency Physicians

• Wheeze by wheeze identification
• Accurate measurement of Wheeze Rate
• Classification of wheeze as inspiratory or expiratory
• Respiratory rate and I\E ratio
• Cough* Counting

WHEEZE RATE: Proportion of the respiratory cycle duration occupied by wheezing – Tw/Ttot

Respiratory Acoustic Monitor

The PulmoTrack^® Respiratory Acoustic Monitor can be used for:

• Bronchodilatation Test: Measurement of
  response to treatment.
• Bronchoprovocation Test particularly for
  infants or other non-cooperative patients.
• Performance of physical examination in a pulmonary function testing environment to identify and quantify the presence of wheezing.

The PulmoTrack® Respiratory Acoustic Monitor system consists of two acoustic sensors attached to the skin over the trachea and chest with disposable acoustic insulating adhesive pads, a pneumo graph belt sensor for documenting breathing activity, and an ambient microphone to filter environmental noises.

Wheeze detection is carried out by patented* software using advanced algorithms that apply strict criteria to determine the presence of wheezing, as defined by CORSA (Computerized Respiratory Sound Analysis) guidelines1.

1. Sovijärvi ARA, Dalmasso F, Vanderschoot J, Malmberg LP, Righini G, Stoneman SAT, Definition of terms for application of respiratory sounds.Eur Respir Rev 2000;10:597-610

PulmoTrack® facilitates improved patient management.

• Minimum patient active effort offers previously unavailable objective pulmonary symptoms documentation in all age groups and continuous overnight monitoring.
• Precise measurement of wheeze rate provides quantitative patient data.
• Archivable and retrievable reports over a period of time enable the following of symptom trends.
• Detailed graphical spectral display and acoustic playback features allow review of specific records for secondary data analysis.

PulmoTrack® Specifications

24-Hour Symptoms Recorder in a Patient’s Own Environment

Ever wonder what the patient is experiencing overnight, during exercise, after a meal, at the work place? The WHolter™ is the first ambulatory wheeze and cough 24-hour recorder that can document objectively and quantitatively patients with:

• Nocturnal Asthma
• COPD or Chronic Bronchitis
• Occupational Asthma
• Chronic Cough
• Allergies

The WHolter^TM is used to continuously determine and provide a detailed report on:

• WheezeRATE^TM, wheeze time over total time
• Inspiratory and Expiratory WheezeRATE^TM
• CoughCOUNT^TM, number of coughs per minute/hour
• Respiratory Rate
• I:E Ratio

WHolter^TM: Listens to your patient when you can’t…

Ambulatory Monitor

Overnight or 24-hour WHolter^TM recording can be used to

• Document Nocturnal Asthma, assess its severity and provide a clear temporal pattern of overnight wheeze activity
• Evaluate level of Asthma control and need for Step-up or Step-down of Asthma treatment
• Evaluate Chronic Cough patients, symptom association (e.g. exposure) and response to treatment
• Objectively document effect of occupational and environmental (e.g. fragrances) pollutants and allergen

The WHolter^TM overnight or 24 hours recorder is prescribed by a physician to assess symptoms, diagnose nocturnal asthma, chronic cough etc. Dispensing the unit, including patient education, correct application of the sensors in the right locations and activation of the recorder is done in a specialized clinic, e.g. PFT Lab, Sleep Lab, Holter (cardiac, hypertension, asthma / allergy specialist) or at the physician’s office/clinic. At the end of24 hours or 8 hours (if only nocturnal WHolter study is indicated) the patient returns the unit, the data is uploaded and sent for analysis and interpretation.

Fig. 1: The WHolter™ WheezeRATE™ overnight record of a 24 years old asthma patient. Note the early-morning wheeze that eventually woke the patient up to administer Albuterol. The overnight average WheezeRATE was 3.7% with 86 minutes (18.6% of the night) with WheezeRATE > 5%.

The WHolter^TM consists of a Data Logger recording unit with a 24 hours digital recording capacity to store continuous information from 2 PPG sensors, pneumogram belt and ambient microphone. The WHolter^TM is supplied with a Check-in/Checkout software that allows registering a patient when the deviceis dispensed, upload the recorded data to the computer and prepare the unit for the next patient. Data Analysis is performed by the PulmoTrack® software package sold separately, or as part of a PulmoTrack®-WHolter™. Use of ambient microphone for event recording.

The WHolter^TM is intended for performing ambulatory lung sounds and respiratory activity recording on those patients who may benefit from such a recording, including, but not limited to, those with complaints of shortness of breath, wheezing, cough, and when there is a need for performing continuous acoustic pulmonary function measurements.

Technical Specifications