PFT PRELIM Flashcards
History of Symptoms Associated with Pulmonary Disorders
Cough
Dyspnea
Wheezing
Basic Information and History Taking
Age
Gender
Body Height and Size
Race
As the person age, the natural elasticity of the lungs decreases.
Age
This translates to smaller and smaller lung volumes and capacities as we age.
Age
Usually the lung volumes and capacities of males are larger than females.
Gender
Even when males and females are matched for height and weight, males have larger lungs than females.
Gender
Has a tremendous effect
Body Height and Size
A smaller man will have a smaller PFT result than a man of same age who is much larger
Body Height and Size
Sometimes, as people age they begin to increase their body mass by increasing their body fat to lean body mass ratio. If they become too obese, the abdominal mass prevents the diaphragm from descending as far as it could so PFT result will demonstrate a smaller measured PFT outcome than expected.
Body Height and Size
Blacks, Hispanics, Native Americans, Caucasians have different PFT result compared to Asians
Race
Includes the name, age, gender, height in stocking feet, race and current diagnosis.
Basic Information
Includes whether the subject has ever has or has been told that he has allergies/hay fever, asthma, chest injury or surgery, recurring colds, pneumonia, tuberculosis, lung CA, bronchieactasis, emphysema, chronic bronchitis.
Personal Medical History
Includes type of medications prescribed and for what problems they are taken in the dose.
Medications Prescribed for Lung or Heart Problems
Includes type of medications prescribed and what problems they are taken in the dose prescribed the scheduled taken in and when they were last taken or used.
Medications Prescribed for Lung or Heart Problems
Includes the immediate family. Immediate family member’s history should be described as it relates to the disorders listed earlier under the heading of the subject’s personal medical history
Family History
Includes the age smoking began, years smoked, type of tobacco or other substance, past and current daily consumption.
Smoking History
Can be useful. This is especially true if the hobbies include the use of chemicals, art supplies or other possibly irritating or poisonous substances
Hobbies
A listing of types and numbers of pets are useful. This is true if their presences can be linked to pulmonary symptoms. Knowing whether they are maintained indoors or outdoors can be significant.
Pets
This can be useful in diagnosing certain endemic diseases.
Place of Residence
A chronological history of the subject’s occupation should be taken. A description of the actual job, exposures to fumes, dust, gases should be noted. A history of employment in farming mining, quarrying, textiles can be significant to pulmonary problems.
Occupational History
Physical Assessment
Vital Signs
Auscultation
Results of Xray Examination
The subject’s pulse, respiratory rate, blood pressure should be noted.
Vital Signs
Their subject should be auscultated and any abnormalities in the subject’s breath sounds should be recorded. With adventitious sounds such as wheezing, ronchi, or crackles, the intensity, location and relation of the sound to the breathing cycle must be noted
Auscultation
Significant information should be noted such as abnormal densities in the lung fields, hyperinflation, loss or vascular markings, presence of bullae, flattened diaphragm etc.
Results of Xray Examination
General Administration of PFT
The therapist should demonstrate a combination of concern, forcefulness, patience, supportiveness, humor, firmness and persistence are necessary for those who are less cooperative.
Clear and simple instructions must be given to the subject.
For successful PFT, two key factors are involved:
The skill of respiratory therapist administering the test.
The cooperation of the patient.
A complete evaluation of the respiratory system includes a patient history, physical examination, radiographic imaging, arterial blood gas analysis and test of pulmonary function.
Pulmonary Function Testing
Pulmonary Function Test Purpose
To identify and quantify changes in pulmonary function
To evaluate need and quantify therapeutic effectiveness
To perform epidemiologic surveillance for pulmonary disease
To assess patients for risk for postoperative pulmonary complications
To determine pulmonary disability
Principles of PFT
Sensitivity and Specificity
Validity
Reliability
First recorded spirometry test was performed by _______.
Greco - Roman
First recorded spirometry test was performed by Greco-Roman
Claudius Galen (129-200 A.D)
The measurement of the lungs residual volume was performed
1800 (Cladius Galen)
He had volunteer plug his nose to assure and accurate measurement of lung volumes, and to prevent air from escaping or entering from the nose.
Giovannin Alfonso Borelli (1608-1679)
He is believed to be the first person to have a patient block the nose, a technique that is still done to this day during spirometry testing.
Giovannin Alfonso Borelli (1608-1679)
Invented the gasometer, a container that store gas
1970 - James Watt(1736-1819)
The volume of air that can be inhaled in a single deep breath was first measured
1679
He laid the foundation of “pneumotherapy” and used his research to establish the “Pneumatic Institute at Clifton” for the treatment of disease by inhalation.
Thomas Beddoes (1760-1808)
Also known as the father of “Inhalation Therapy”
Thomas Beddoes (1760-1808)
He developed a method of collecting expired gas over mercury and attempted to determine how much those gases had been used by the body. He thought this was important because oxygen should be less than what is inhaled.
John Abernethy (1764-1831)
He also determine that exhaled oxygn would be higher in patient with certain lung diseases.
John Abernethy (1764-1831)
He also measure vital capacity of 3110
John Abernethy (1764-1831)
He was able to measure his VT at 210 ml
Sir Humphrey Davey (1778-1829)
He also calculated his residual volume to be about 600 ml
Sir Humphrey Davey (1778-1829)
Also devised a mechanism to determine how much oxygen was utilized by the body and how much carbon dioxide his body creadted.
Sir Humphrey Davey (1778-1829)