home
about the project
Medical news
For authors
Licensed books on medicine
<< Previous Next >>

INTERPRETATION OF RHYTHMOGRAMS

When examining a rhythmogram, it is necessary first of all to evaluate the heart rate. The average heart rate can be determined by comparing the average amplitude of the rhythmogram graph with the vertical scale of the graph. It must be remembered that heart rate is equal to a ratio of 60 to the average value of R-R intervals in seconds. For example, if the average value of the cardio intervals during the visual assessment of the graph is 1.0 sec., The average heart rate will be 60 beats per minute.

The magnitude of the change in the duration of the RR intervals must be estimated by the minimum and maximum value of the duration of the CI. It must be remembered that episodes of rhythm and conduction disturbance strongly influence these ranges.

Estimation of the recording duration (it does not always coincide with the duration of the rhythmogram). Usually a 5 minute rhythmogram score is used. When changing the duration of the rhythmogram, the scale of the graph changes compared to the five-minute one.

If episodes of a sharp change in heart rate are detected, the results of spectral analysis should be carefully interpreted, and if more than 5-10% of such elements are found, the traditional assessment of spectral analysis should be abandoned.

To evaluate the wave structure of the rhythmogram and determine its class, it is necessary to compare the rhythmogram of a particular patient with samples of rhythmograms of certain classes (see
"3.4.1. Visual assessment of the rhythmogram ”).

When the functional state of the CVS deteriorates, the wave structure of the rhythm is smoothed, which is accompanied by a decrease in the amplitude of the RR intervals.

The rhythmogram of a practically healthy subject

<< Previous Next >>
= Skip to textbook content =

INTERPRETATION OF RHYTHMOGRAMS

  1. INTERPRETATION OF SKIN CHANGES
    Thomas B. Fitzpatrick, Harley L. Haynes (Thomas B. Fitzpatrick, Harley A. Haynes) Clinical study of the skin Identifying skin lesions or changes is a problem similar to that of recognizing cells in a blood smear: the smallest details are of great importance. The patient himself may complain of skin lesions or they may be discovered accidentally with
  2. The results of the study and their interpretation
    The study was conducted with fifth-year psychology students of the Novosibirsk State Pedagogical University in 2010. The number of subjects is 55, including 4 boys and 51 girls. The age of the subjects from 21 to 23 years. At the first stage of the study, the purpose of which was to identify the level of professional orientation of the subjects using the method of T. D.
  3. Interpretation of ST segment changes
    Lead selection. The highest quality results with a load test are achieved using a 12-channel ECG recording. Lead U5 is the most informative. In patients without previous MI with a normal ECG, resting ST-segment depression induced by exercise, limited to lower leads (III, aVF), has little diagnostic significance.
  4. Interpretation of X-ray semiotics
    To evaluate the results of an X-ray examination, it is necessary to take into account the presence of arthritic and sclerotic changes in the bone biocomposite, disco-inconsistency of the articular surfaces of the articulating bones, as well as isolation of processus anconeus and fragmentation of processus coronoideus medialis. Therefore, it is advisable to distinguish 5 degrees of dysplasia articulatio cubiti: 1. Normal. No symptoms
  5. Clinical interpretation of RFI data
    Given the high variability of the shape of HF tympanograms, a morphological classification (similar to the Liden-Gerger scheme for Y-226) for HF does not exist - it would be uninformative. Based on existing data, 2 diagnostic criteria are proposed. 1. The presence of peaks and teeth on the tympanogram is the norm, but a flat tympanogram may be a sign of exudate in the middle ear.
  6. Interpretation of stress test results
    Clinical aspects Typical symptoms of exertional angina pectoris, especially when combined with ST segment depression, are characteristic of patients with stenotic lesion of the coronary arteries and indicate the presence of coronary artery disease. During a stress test, the patient is asked to carefully describe the feeling of discomfort in order to ensure the presence of typical angina, and not chest pain
  7. QUICK INTERPRETATION OF HRV ANALYSIS RESULTS
    When analyzing HRV indicators, as a rule, it is required: • to distinguish between primary and secondary indicators; • know the purpose and standards of the most important indicators of HRV; • understand what the deviation of a particular indicator in a certain direction means. When analyzing graphs, it is necessary: ​​• to clearly understand how a particular graph is constructed (which is plotted along the X axis, along the Y axis, etc.).
  8. Existential interpretation of caring for another person
    S. L. Rubinstein (1889–1960) was the first Russian psychologist who attempted to formulate the so-called “big questions of life” (What is being? What does it mean to exist? What does the authenticity of existence mean? What is the meaning of life? What is death? What is the meaning of another in human life? what is the meaning of love?) (Rubinstein, 1973). Such questions reflecting the philosophical thinking of the individual about
  9. Interpretation of charts characterizing lung ventilation
    If during a mechanical ventilation the patient tries to breathe on his own (Fig. 4.8), then he is doomed to fight with the device. Reducing the inhalation time or, even better, changing the ventilation mode to one in which the patient can breathe independently even with forced inhalation, is an option to keep in mind. VIRAP and SIMV are examples of suitable modes in this case. With changes in compliance
  10. Clinical interpretation of multicomponent multifrequency tympanometry data
    The clinical use of multifrequency tympanometry was first demonstrated by Colletti in 1976. In practice, MRI is now more often used for differential diagnostic purposes. For example, in case of otoclerosis, the shape of tympanograms often corresponds to the norm, and only the measurement of RF allows one to suspect the fixation of the stapes. Also, sometimes it becomes necessary to differentiate a circuit break
  11. Interpretation of measurements of the achieved level of physical development
    One of the main goals of using calculated indicators of physical development is to predict subsequent health problems, especially morbidity, mortality, mental development, working capacity, reproductive function and the risk of chronic disease. However, prediction does not always indicate causal relationships. A meta-analysis of six long-term cohort studies of children noted
  12. Clinical interpretation of monocomponent low-frequency tympanometry data (Y-226 Hz)
    There are qualitative (morphology of tympanograms) and quantitative characteristics of tympanograms. Their designation and evaluation criteria may vary depending on the manufacturer of the recording equipment. {foto31} {foto32} (Quoted from The Guidelines for Screening for Hearing Impairments and Middle Ear Disorders. Asha, 1990) The following are examples of patterns for measuring width
  13. Methods of analysis and interpretation of data, obtaining empirically sound generalizations, conclusions and recommendations
    The final stage of empirical sociological research involves the processing, analysis and interpretation of data, obtaining empirically sound generalizations, conclusions and recommendations. Data processing includes the following components: 1) Editing and coding of information. The main purpose of this step is to unify and formalize the information that was received in
  14. POSTOPERATIVE PERIOD (INTERPRETATION OF WATER-ELECTROLYTIC IMBALANCE AND CORRECTIVE THERAPY)
    Even when using numerous research methods, an accurate conclusion about the size of the loss or excess of fluid is difficult. Often, the doctor’s assumptions based on clinical and laboratory data help in diagnosing the condition. Sometimes it is necessary to conduct trial therapy, carry out the necessary monitoring and determine the functional response to this therapy. Clinically stable
  15. BIOLOGICAL FACTS AND POLITICAL INTERPRETATIONS: DIVIDED WE HAPPENLY FOR WOMEN AND MEN ...
    The word "mercilessly" (that is, completely obvious and without compromise) from the romantic song of Alexander Dolsky reflects the fact that men and women differ from each other in their very essence. It is generally accepted that these differences are certified and scientifically proven: in the end, Nature itself (or the Lord God, depending on the context) made them so different. But sometimes useful again
  16. Postoperative period (interpretation of water-electrolyte imbalance and corrective therapy)
    Even when using numerous research methods, an accurate conclusion about the size of the loss or excess of fluid is difficult. Often, the doctor’s assumptions based on clinical and laboratory data help diagnose the condition. Sometimes it is necessary to conduct trial therapy, carry out the necessary monitoring and determine the functional response to this therapy. Clinically stable
  17. METHODS OF ANALYSIS OF THE WAVE STRUCTURE OF RHYTHM
    VISUAL ASSESSMENT OF THE RHYTHMOGRAM The rhythmogram (WG) is a graphic representation of the duration of the RR intervals. When constructing a rhythmogram, the recording time is delayed on the abscissa axis, and the duration of each KI is plotted on the ordinate axis. Normally, the upper edge of the rhythmogram is wave-like. It is formed by four types of waves of various origins. The characteristics of the waves are shown in the table. {foto35}
Medical portal "MedguideBook" © 2014-2019
info@medicine-guidebook.com