This study aims to analyze the influence of the fourth ventricle compression technique in heart rate, respiratory rate, blood pressure, conductivity and thermal variability of the skin in healthy young adults.
The fourth ventricle compression technique (CV-4) is one of the most important techniques in the treatment of cranial osteopathy. During the present study, the effects of CV-4 technique will be analyzed in the following variables: heart rate, respiratory rate, blood pressure, conductivity and thermal variation of the skin. According to the literature, CV-4 technique will cause changes in all of the studied variables, except the respiratory rate, through the activation of the brain stem, namely the parasympathetic nerve centers. Regarding the respiratory rate, it is justified by the fourth ventricle and the respiratory centers proximity. Concerning heart rate and respiratory rate, during the CV-4 technique the literature describes a decrease in the values of this variables. However, other studies refer that the technique does not produce relevant effects in the heart and respiratory rates variation, probably because there was no stipulated time to finish the technique, ending subjectively compared to previous ones. When it comes to blood pressure, a decrease in systolic blood pressure values is noticed by some authors. In which concerns the variation in body temperature, according to the literature, there were no significant results obtained when performing CV-4. During the performed literature analysis,there were not found any studies concerning the influences of the CV-4 technique in the thermal conductivity variable.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
60
The participant is in the supine position and the principal investigator is seated at the patient's head, with elbows resting on the table. The main investigator overlaps his hands with the thenar eminences, contacting the occipital bone squamous part, between the external occipital protuberance and the participant's occipito-mastoid suture. The technique begins with a maintained compression on the occipital squamous part during a deep thorax exhalation. Throughout the compression of the occipital bone and the participant's voluntary inspirations, the principal investigator feels a gradual pressure increase at the thenar eminences. The technique will be performed until reaching the still point, in which the mobility of the occipital bone, respiratory rate and muscle tone decrease, or until 5 minutes elapsed.
The main investigator uses the technique contact but does not perform any type of tissue traction or compression, maintaining this contact for 5 minutes. At the end of the stipulated time, the contact is removed in a subtle way.
Escola Superior da Saúde do Porto
Porto, Portugal
Change from Baseline in heart rate variability immediately after the intervention
To obtain the heart rate measurements, a pulse volume sensor (Biosignalsplux researcher) was connected to the third finger of the hand, with the patient lying supine. The sensor was only removed after completing all the evaluation moments.
Time frame: Immediately after the intervention.
Change from Baseline in heart rate variability 15 minutes after the intervention
To obtain the heart rate measurements, a pulse volume sensor (Biosignalsplux researcher) was connected to the third finger of the hand, with the patient lying supine. The sensor was only removed after completing all the evaluation moments.
Time frame: 15 minutes after the intervention.
Change from Baseline in respiratory rate variability immediately after the intervention
To obtain the respiratory rate measurements, a respiratory belt transducer (Biopac Systems) was adjusted to the patient's thorax, at the xiphoid process level, with the patient lying supine. The sensor was only removed after completing all the evaluation moments.
Time frame: Immediately after the intervention.
Change from Baseline in respiratory rate variability 15 minutes after the intervention
To obtain the respiratory rate measurements, a respiratory belt transducer (Biopac Systems) was adjusted to the patient's thorax, at the xiphoid process level, with the patient lying supine. The sensor was only removed after completing all the evaluation moments.
Time frame: 15 minutes after the intervention
Change from Baseline in blood pressure variability immediately after the intervention
To obtain the blood pressure measurements, a digital sphygmomanometer was applied to the patient's left arm, with the patient lying supine. The sensor was only removed after completing all the evaluation moments.
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.
Time frame: Immediately after the intervention.
Change from Baseline in blood pressure variability 15 minutes after the intervention
To obtain the blood pressure measurements, a digital sphygmomanometer was applied to the patient's left arm, with the patient lying supine. The sensor was only removed after completing all the evaluation moments.
Time frame: 15 minutes after the intervention.
Change from Baseline in skin conductivity variability immediately after the intervention
To obtain the skin conductivity measurements, 2 electrodermal activity sensors (Biosignalsplux researcher) were connected to the patient's first finger, on the carpometacarpal and metacarpophalangeal joints, with the patient lying supine. The sensor was only removed after completing all the evaluation moments.
Time frame: Immediately after the intervention.
Change from Baseline in skin conductivity variability 15 minutes after the intervention
To obtain the skin conductivity measurements, 2 electrodermal activity sensors (Biosignalsplux researcher) were connected to the patient's first finger, on the carpometacarpal and metacarpophalangeal joints, with the patient lying supine. The sensor was only removed after completing all the evaluation moments.
Time frame: 15 minutes after the intervention.
Change from Baseline in skin thermal variation immediately after the intervention
To obtain the skin thermal variation measurements, negative temperature coefficient (NTC) thermistor sensors (Biosignalsplux researcher) were connected to the patient's first finger, on the carpometacarpal and metacarpophalangeal joints, with the patient lying supine. The sensor was only removed after completing all the evaluation moments.
Time frame: Immediately after the intervention.
Change from Baseline in skin thermal variation 15 minutes after the intervention
To obtain the skin thermal variation measurements, negative temperature coefficient (NTC) thermistor sensors (Biosignalsplux researcher) were connected to the patient's first finger, on the carpometacarpal and metacarpophalangeal joints, with the patient lying supine. The sensor was only removed after completing all the evaluation moments.
Time frame: 15 minutes after the intervention.