(n.) A curve traced by a point in the circumference of a circle which rolls on the convex side of a fixed circle.
Example Sentences:
(1) Therefore, the paths of the individual mandibular points are epicycloids or hypocycloids.
Spirograph
Definition:
(n.) An instrument for recording the respiratory movements, as the sphygmograph does those of the pulse.
Example Sentences:
(1) Pulmonary function is little modified on the spirographic level; however, one observes an improvement of blood gases at rest which seems to result from better alveolar ventilation.
(2) simultaneous spirographic recording of the volume expired (FEV-1) and independent plethysmographic recording of TLC were obtained.
(3) In 10 patients with airway obstruction, spirographic indices and maximal expiratory flow rates were measured before inhalation of fenoterol and at different time intervals, for 5 h, following the inhalation of 200 mug of this substance.
(4) The improvement achieved in 42 patients included amelioration of the clinical symptoms cough, secretion and dyspnoea; the lessening of bronchial obstruction could be verified by spirographic analyses.
(5) Four cases of respiratory dyskinesia were investigated by using a spirograph before and after biperiden injection.
(6) Clinical, bronchoscopic, spirographic, scintigraphic, and chemical analyses were done in 24 children with cystic fibrosis to assess the mucolytic effects of acetylcysteine inhalations versus L-arginine hydrochloride aerosols.
(7) The study included atopic research through questioning and allergy skin tests; spirographic respiratory function study, airway resistance, carbachol BHR with determination of the threshold dose (FEV1 20% decrease).
(8) Spirographic determinations before and 1--2 months after surgery showed that the postoperative sequelae were milder in children than in adults.
(9) One stage total bilateral pulmonary denervation produced in a group of 23 dogs an increase breathing frequency, an increase in the amplitude of respiration and a characteristic morphology of the spirographic pattern.
(10) The spirographic shortage was on the whole identical in both groups.
(11) Spirographic parameters examined were vital capacity percent (%VC), forced expiratory volume in 1 sec divided by forced vital capacity (%) (FEV1.0%), and blood gas data.
(12) Administration of an aerosol of acetylcholine after normalization of the spirographic pattern produced a temporary reappearance of the immediate postdenervation spirographic pattern.
(13) The survey involved: a complex evaluation of respiratory tract, including internal, radiological, spirographic, gasometric and capnographic examinations.
(14) The functional state of the lungs was evaluated by means of spirographic and radiological methods.
(15) The improvement in pattency of small airways following administration of bronchodilators can be an index for early identification of patients with chronic bronchitis, although this needs to be verified in prospective spirographic studies.
(16) An analysis of spirographic studies and measurement of airflow resistance in diagnosing bronchial hyperreactivity in 27 children with bronchial asthma was made.
(17) In 21 males, aged about 20, 18 out of them with chronic bronchopulmonary diseases (bronchiectases, focal fibrosis, deforming bronchitis) and three healthy--VC, FEFR1, FVC, MMV50, MEFR200-1200, MAEFR, MAEFR25-75 and MEFR50 and MEFR90 were spirographically investigated prior to, two hours afert and 24 hours after unilateral bronchography; the three of the investigations were combined with a subsequent inhalation bronchodilatation test with orziprenalin--aersol (alupent).
(18) It's more of a Spirograph than an Etch a Sketch, as the sweeping curves signify.
(19) The author reports the results of hemoynamic, spirographic and biochemical studies conducted in patients, operated upon on the organs of the lower abdomen, pelvis and lower extremities.
(20) During the period of rehabilitation the usual spirographic measurements were carried out and some spiroergometric parameters were measured at standardized ergometric work loads.