scholarly journals Measuring oxygen saturation and pulse rate in dairy cows before and after machine milking using a low-cost pulse oximeter

2021 ◽  
Vol 52 (1) ◽  
Author(s):  
Aldo Calcante ◽  
Francesco M. Tangorra
Keyword(s):  
Oxygen Saturation ◽  
Dairy Cows ◽  
Pulse Rate ◽  
Pulse Oximeter ◽  
Low Cost ◽  
Machine Milking ◽  
Lactation Stage ◽  
Significant Difference ◽  
Before And After ◽  
Milking Machine

The present study was aimed to measure the haemoglobin oxygen saturation and the pulse rate at teat level on dairy cows after and before milking, using a low cost pulse oximeter developed especially. The pulse oximeter has been tested during a three days of field test involving 18 Holstein Friesian cows raised in a commercial farm located in Northern Italy. The results highlighted that there is a significant difference both in haemoglobin oxygen saturation (SpO2) and pulse rate before and after milking considering the entire sample of animals. By dividing the sample according to the milking time (fast < 8 min and slow > 8 min), a significant difference between fast and slow cows has been observed for SpO2, whilst no difference has been noted considering the lactation stage (< 70 DIM and 71-140 DIM). About the pulse rate, on the contrary, milking time and lactation stage were not significantly different. This confirms that machine milking can create stress to the teat evoking circulatory impairment of its tissue and that pulse oximetry could be useful for detecting machine milking-induced alterations of teats. In perspective, the pulse oximeter could be used as a part of a monitoring system of the milking machine, enabling to change its operating parameters in order to minimize the mechanical stress on the teats.

scholarly journals Vacuum level for opening the teat sphincter and the change in the teat end wall thickness in response to the machine milking of indigenous Greek goats

2008 ◽  
Vol 53 (No. 3) ◽  
pp. 112-118 ◽  
Author(s):  
B. Skapetas ◽  
J. Katanos ◽  
V. Laga ◽  
Ε. Sinapis ◽  
I. Hatziminaoglou
Keyword(s):  
Wall Thickness ◽  
Experimental Period ◽  
Vacuum Level ◽  
Machine Milking ◽  
Stage Of Lactation ◽  
Lactation Stage ◽  
Before And After ◽  
Milking Machine ◽  
End Wall ◽  
Teat Canal

The aim of this paper was to study some of the teat characteristics involved in the milking ability of indigenous Greek goats such as the vacuum level of the milking machine that is required for the opening of the teat canal sphincter and the changes in the teat end wall thickness induced by milking. Thirty-six dams (12 of the first, 12 of the second and 12 of the third and subsequent lactations) were used after weaning (60 ± 5 days). Dams were milked twice a day (8:00 and 18:00 h) for 12 weeks in a milking parlour 1 × 12 side by side of Casse type with 6 milking units and a low milk line and air pipeline. The main functional characteristics of milking machine were: vacuum level 44 kPa, pulsation rate 90 pulsations/min and pulsation ratio 50:50. Every 14 days, during morning and evening milking the vacuum level that was required for the opening of the teat sphincter (VOTS) was measured. The measurement of teat end wall thickness (TEWT) was performed before and after milking. The results of this study showed that during the experimental period the mean VOTS was 23.57 ± 0.36 kPa and decreased significantly as the stage of lactation progressed (<I>P</I>< 0.001). The post-milking TEWT was 3.55% higher in comparison with that before milking (<I>P</I> < 0.01). A continuous and significant decrease in teat thickness was observed during the lactation stage (<I>P</I> < 0.001), which suggests a reaction to intramammary pressure and milk quantity in the udder. The TEWT was affected significantly by the parity (<I>P</I> < 0.01). A positive correlation was found between VOTS and TEWT before and after milking (0.4 and 0.36, respectively). It could be said that a lower vacuum level is required for the opening of the teat sphincter of the udder in goats of the indigenous Greek breed. The thicker teat end wall and more resistant sphincter could be less favourable in the machine milking of goats.

Method of high frequency therapy at cows' mastitis during machine milking

2020 ◽  
pp. 9-12
Author(s):  
Viktor E. Lyubimov ◽  
Keyword(s):  
Dairy Cows ◽  
Electromagnetic Fields ◽  
High Frequency ◽  
High Efficiency ◽  
Environmentally Friendly ◽  
Ultrahigh Frequency ◽  
Machine Milking ◽  
High Frequency Electromagnetic Field ◽  
Milking Machine ◽  
Methods Of Treatment

Health of dairy cows ensures human health, so it is important that dairy products do not contain antibiotics that are used to treat any inflammation, including mastitis. In Russia at present, the problem of mastitis in cows exists with both attached and loose housing of cows. Mastitis of dairy cows are the great problem in milking husbandry. Losses from mastitis in milk yield can reach 15-20%. The main reasons for the occurrence of nonspecific mastitis of cows are the shortcomings of the working components of the milking machine: the degree of deterioration of the nipple rubber and the violation of machine milking technology (the reduction in pre-milking time and vacuum fluctuations account for 70% of all causes). Treatment of mastitis with antibiotics is effective, but not environmentally friendly and unacceptable. For the treatment of inflammation of the udder, it is necessary to use more environmentally friendly methods of treatment, one of which is the exposure to ultra-high frequency electromagnetic field tested by medicine. Use of three types of medical-mobile milking machines with the same method of exposure to ultrahigh-frequency electromagnetic fields on cow's nipples through electrodes in milking cups: LPDA-1-UHF, LPDA-2-UHF and LPDA-UHF-30 M, is described in the article. Author proved that cows with subclinical forms of mastitis recovered faster during milking with exposure to the ultrahigh frequency than when treated by antibiotics, and milking with the ultrahigh frequency device helps to recover 82% of the affected quarters with clinical forms and 100% of cows with subclinical forms of mastitis or with udder irritation. The high efficiency of the method of exposure to electromagnetic fields of the ultrahigh frequency during machine milking by means of medical-mobile milking machines LPDA-UHF for the prevention and treatment of mastitis of cows was shown.

scholarly journals Novel oxygen saturation imaging endoscopy to assess anastomotic integrity in a porcine ischemia model

2020 ◽  
Author(s):  
Hiro Hasegawa ◽  
Nobuyoshi Takeshita ◽  
Masaaki Ito
Keyword(s):  
Oxygen Saturation ◽  
Tissue Oxygen Saturation ◽  
Air Leakage ◽  
Anastomotic Complications ◽  
Oral Side ◽  
Light Region ◽  
Significant Difference ◽  
Before And After ◽  
Bowel Perfusion ◽  
Endoscope System

Abstract Background: Establishing anastomotic integrity is crucial for avoiding anastomotic complications in colorectal surgery. This study aimed to evaluate the safety and feasibility of assessing anastomotic integrity using novel oxygen saturation imaging endoscopy in a porcine ischemia model.Methods: In three pigs, a new endoscope system was used to check the mechanical completeness of the anastomosis and capture the tissue oxygen saturation (StO2) images. This technology can derive the StO2 images from the differences in the absorption coefficient in the visible light region between oxy- and deoxy-hemoglobin. Bowel perfusion at the proximal rectum was assessed before and after the anastomosis, and one minute and thirty minutes after the ligation of the cranial rectal artery (CRA).Results: The completeness of the anastomoses was confirmed by the absence of air leakage. Intraluminal oxygen saturation imaging was successfully performed in all animals. There was no significant difference in the StO2 level before and after the anastomosis (52.6 ± 2.0 vs. 52.0 ± 2.6; p = 0.76, respectively). The StO2 level of the intestine on the oral side of the anastomosis one minute after the CRA ligation was significantly lower than immediately after the anastomosis (15.9 ± 6.0 vs. 52.0 ± 2.6; p = 0.006, respectively). There was no significant difference in the StO2 level between one minute after and thirty minutes after the CRA ligation (15.9 ± 6.0 vs. 12.1 ± 5.3; p = 0.41, respectively).Conclusion: Novel oxygen saturation imaging endoscopy was safe and feasible to assess the anastomotic integrity in the experimental model.

scholarly journals Health Monitoring for Elderly: An Application Using Case-Based Reasoning and Cluster Analysis

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
Mobyen Uddin Ahmed ◽  
Hadi Banaee ◽  
Amy Loutfi
Keyword(s):  
Oxygen Saturation ◽  
Pulse Rate ◽  
Health Monitoring ◽  
Pulse Oximeter ◽  
Extraction Methods ◽  
Case Based Reasoning ◽  
Blood Oxygen Saturation ◽  
Time Frequency ◽  
And Cluster Analysis ◽  
Case Based

This paper presents a framework to process and analyze data from a pulse oximeter which remotely measures pulse rate and blood oxygen saturation from a set of individuals. Using case-based reasoning (CBR) as the backbone to the framework, records are analyzed and categorized according to their similarity. Record collection has been performed using a personalized health profiling approach in which participants wore a pulse oximeter sensor for a fixed period of time and performed specific activities for pre-determined intervals. Using a variety of feature extraction methods in time, frequency, and time-frequency domains, as well as data processing techniques, the data is fed into a CBR system which retrieves most similar cases and generates an alarm according to the case outcomes. The system has been compared with an expert's classification, and a 90% match is achieved between the expert's and CBR classification. Again, considering the clustered measurements, the CBR approach classifies 93% correctly both for the pulse rate and oxygen saturation. Along with the proposed methodology, this paper provides a basis for which the system can be used in the analysis of continuous health monitoring and can be used as a suitable method in home/remote monitoring systems.

Concurrent Validity of Arterial Blood Oxygen Saturation Measurements: A Preliminary Analysis of an iPad Pulse Oximeter and Traditional Pulse Oximeter Using Bluetooth

2014 ◽  
Vol 19 (3) ◽  
pp. 37-42
Author(s):  
Scott Cheatham ◽  
Morey J. Kolber ◽  
Michael P. Ernst
Keyword(s):  
Oxygen Saturation ◽  
Pulse Oximetry ◽  
Pulse Rate ◽  
Pulse Oximeter ◽  
Concurrent Validity ◽  
Outcome Measure ◽  
Blood Oxygen ◽  
Short Term ◽  
Blood Oxygen Saturation ◽  
Main Outcome Measure

Context:Pulse oximetry has become mobile with the use of smartphone and Bluetooth wireless technology. This technology offers many benefits but has not been extensively studied. There is a need to further validate its clinimetric properties for health professionals to provide proper guidance to patients.Objective:This investigation assessed the concurrent validity of the iSpO2pulse oximeter against a traditional pulse oximeter in measuring short-term resting blood oxygen saturation (SpO2) and pulse rate.Design:Observational study of reliability.Setting:University kinesiology laboratory.Participants:Thirty healthy, recre-ationally active adults (18 men, 12 women; mean age = 25.7 ± 5.46 years, mean height = 170.3cm ± 9.51, mean body mass = 76.4 kg ± 19.33).Intervention:Resting measurement of SpO2and pulse rate using the iSpO2pulse oximeter with the iPad Mini and a traditional pulse oximeter with Bluetooth.Main Outcome Measure:Resting SpO2and pulse rate were concurrently measured over 5 min.Results:The concurrent validity between the iSpO2and traditional pulse oximeter was moderate for measuring SpO2, intraclass correlation coeffcient (ICC)(3, 1) = .73,SEM= 0.70%, and good for pulse rate, ICC(3, 1) = .97,SEM= 1.74 beats per minute (bpm). The minimal detectable change at the 95% confidence interval for both instruments suggests that there may be 1.94% disagreement for SpO2and 4.82 bpm disagreement between pulse oximetry methods. The 95% limits of agreement (LoA) for measuring SpO2suggests that the iSpO2and traditional pulse oximeters may vary -0.28 ± 1.98%, or approximately 2%. The 95% LoA for measuring pulse rate suggests that the iSpO2and traditional pulse oximeter may vary 1.74 ± 4.98 bpm, potentially upward of 6 bpm. On the basis of the results of the LoA, it appears that there may be a slight systematic bias between the two devices, with the traditional pulse oximeter producing higher pulse rates than the iSpO2.Conclusion:The findings suggest that both instruments may be beneficial for indirect short-term measurements of resting SpO2and pulse rate.

scholarly journals Respiratory Consequences of N95 Mask during Covid-19 Pandemic- An Observational Study

2021 ◽  
Vol 11 (4) ◽  
pp. 55-61
Author(s):  
Rajesh Prabhakar Gaikwad ◽  
Akshaya Bhupesh Banodkar ◽  
Vaibhavi Pandurang Nandgaonkar
Keyword(s):  
Oxygen Saturation ◽  
Saturation Level ◽  
World Health ◽  
Blood Oxygen ◽  
Blood Oxygen Saturation ◽  
Oxygen Saturation Level ◽  
Significant Difference ◽  
Before And After ◽  
Precautionary Measures ◽  
Health Organization

Background: Outbreak of novel corona virus has led World Health Organization (WHO) to come up with healthcare guidelines which includes wearing of N95 mask. The aim of this study was to evaluate whether blood oxygen saturation level is affected by wearing of N95 mask for the duration of 4 hours. Materials and Methods: A total of 90 exam going students were included in this study, who were instructed to wear N95 mask. Blood oxygen saturation level (SpO2) was checked both before and after wearing of N95 mask for a period of 4 hours. Results: It was observed that, before wearing N95 mask at 9 am, SpO2 values were 96.64±0.196 while at 1 pm after removing N95 mask, the saturation values were 95.68±0.235 (p=0.000) among all the students. There was a statistically highly significant difference seen for the values between the time intervals (p<0.01) with higher values at 9 am and lesser at 1pm. On comparing the SpO2 levels among males and females, a statistically nonsignificant difference was seen. Thus, reduction in blood oxygen saturation level can be a major parameter to evaluate the respiratory consequences of N95 mask. Conclusion: Various adverse effects of N95 mask were quoted in literature but respiratory consequences due to reduction in blood oxygen saturation level can be harmful. Thus, to avoid such consequences, precautionary measures are advised to be taken. Key words: N95 mask, SpO2, Blood oxygen saturation, COVID-19.

scholarly journals Use of an inertial measurement unit sensor in pedicle screw placement improves trajectory accuracy

PLoS ONE ◽  
2020 ◽  
Vol 15 (11) ◽  
pp. e0242512
Author(s):  
Satoshi Baba ◽  
Kenichi Kawaguchi ◽  
Kazuhito Itamoto ◽  
Takeshi Watanabe ◽  
Mitsumasa Hayashida ◽  
...  
Keyword(s):  
Pedicle Screw ◽  
Inertial Measurement Unit ◽  
Low Cost ◽  
Measurement Unit ◽  
Rotational Angle ◽  
Inertial Measurement ◽  
Computed Tomography Images ◽  
Freehand Technique ◽  
Significant Difference ◽  
Before And After

Ascertaining the accuracy of the pedicle screw (PS) trajectories is important as PS malpositioning can cause critical complications. We aimed to determine the angle range over which estimation is unreliable; build a low-cost PS placement support system that uses an inertial measurement unit (IMU) to enable the monitoring of surgical tools and PS trajectories, and determine the situations where IMU support would be most beneficial. In PS insertion experiments, we used cadaver samples that included lumbar porcine spines. Computed tomography images obtained before and after PS insertion were viewed. Offsets between the planned and implanted PS trajectories in the freehand and IMU-assisted groups were analyzed. The PS cortical bone breaches were classified according to the Gertzbein and Robbins criteria (GRC). Added head-down tilted sample experiments were repeated wherein we expected a decreased rostro-caudal rotational accuracy of the PS according to the angle estimation ability results. Evaluation of the PS trajectory accuracy revealed no significant advantage of IMU-assisted rostro-caudal rotational accuracy versus freehand accuracy. According to the GRC, IMU assistance significantly increased the rate of clinically acceptable PS positions (RoCA) than the freehand technique. In the head-down tilted sample experiments, IMU assist provided increased accuracies with both rostro-caudal and medial rotational techniques when compared with the freehand technique. In the freehand group, RoCA was significantly decreased in samples with rostral tilting relative to that in the samples without. However, In the IMU-assisted group, no significant difference in RoCA between the samples with and without head-down tilting was observed. Even when the planned PS medial and/or rostro-caudal rotational angle was relatively large and difficult to reproduce manually, IMU-support helped maintain the PS trajectory accuracy and positioning safety. IMU assist in PS placement was more beneficial, especially for larger rostro-caudal and/or medial rotational pedicle angles.

scholarly journals Novel oxygen saturation imaging endoscopy to assess anastomotic integrity in a porcine ischemia model

2020 ◽  
Author(s):  
Hiro Hasegawa ◽  
Nobuyoshi Takeshita ◽  
Masaaki Ito
Keyword(s):  
Oxygen Saturation ◽  
Tissue Oxygen Saturation ◽  
Air Leakage ◽  
Anastomotic Complications ◽  
Oral Side ◽  
Light Region ◽  
Significant Difference ◽  
Before And After ◽  
Bowel Perfusion ◽  
Endoscope System

Abstract Background: Establishing anastomotic integrity is crucial for avoiding anastomotic complications in colorectal surgery. This study aimed to evaluate the safety and feasibility of assessing anastomotic integrity using novel oxygen saturation imaging endoscopy in a porcine ischemia model.Methods: In three pigs, a new endoscope system was used to check the mechanical completeness of the anastomosis and capture the tissue oxygen saturation (StO2) images. This technology can derive the StO2 images from the differences in the absorption coefficient in the visible light region between oxy- and deoxy-hemoglobin. Bowel perfusion at the proximal rectum was assessed before and after the anastomosis, and one minute and thirty minutes after the ligation of the cranial rectal artery (CRA).Results: The completeness of the anastomoses was confirmed by the absence of air leakage. Intraluminal oxygen saturation imaging was successfully performed in all animals. There was no significant difference in the StO2 level before and after the anastomosis (52.6 ± 2.0 vs. 52.0 ± 2.6; p = 0.76, respectively). The StO2 level of the intestine on the oral side of the anastomosis one minute after the CRA ligation was significantly lower than immediately after the anastomosis (15.9 ± 6.0 vs. 52.0 ± 2.6; p = 0.006, respectively). There was no significant difference in the StO2 level between one minute after and thirty minutes after the CRA ligation (15.9 ± 6.0 vs. 12.1 ± 5.3; p = 0.41, respectively).Conclusion: Novel oxygen saturation imaging endoscopy was safe and feasible to assess the anastomotic integrity in the experimental model.

scholarly journals Short-term effects of treadmill exercise on metabolic, physiological and hemodynamic functions of apparently healthy individuals.

2018 ◽  
Vol 9 (1) ◽  
pp. 27-31
Author(s):  
Nkiruka Peace Ojiako ◽  
Joel Onyeanusi ◽  
Kenechukwu Chibuike Onyekwelu ◽  
Silas Anayochukwu Ufelle ◽  
Uzoamaka Adaobi Okoli ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Lipid Profile ◽  
Pulse Rate ◽  
Treadmill Exercise ◽  
Density Lipoprotein ◽  
Anthropometric Parameters ◽  
Significant Difference ◽  
Before And After ◽  
The Mean ◽  
Apparently Healthy

Background: According to the World Health Organization (WHO), 60 to 85% of the population worldwide does not engage in enough activity; making physical inactivity the fourth leading risk factor for global mortality.Aims and Objectives: This study evaluated the effect of treadmill exercise on liver enzymes, lipid profile, glucose, albumin, blood pressure and pulse rate of apparently healthy students of Nigerian Law School, Enugu Campus, Enugu State Nigeria.Materials and Methods: Sixty (60) students (30 males and 30 females) within the age bracket of 21-35 years were recruited for this study. The anthropometric parameters: height (m) and weight (kg) were taken and used in the calculation of body mass index (BMI). Blood samples were collected from the subjects for the determination of liver enzymes, lipid profile, glucose and albumin levelsbefore and immediately after exercise. Anthropometric parameters, blood pressure and pulse rate were also measured before and immediately after exercise. The blood samples collected were analyzed in the laboratory for albumin, glucose, lipid profile (triglyceride, total cholesterol, high density lipoprotein (HDL) and low density lipoprotein (LDL)), liver enzyme (aspartate transaminase (AST), alanine transaminase (ALT) and alkaline phosphate (ALP)) using standard methods as described in materials and methods.Results: There were significant difference (p<0.05) between the mean pulse rate and blood pressure before and after treadmill exercise. There were also significant difference (p<0.05) between the mean glucose, AST, ALT, ALP, total cholesterol and albumin before and after exercise.Conclusion: Findings from this study revealed that tread mill exercise has a short term effect of the metabolic, physiological and hemodynamic functions of the exercising individuals.Asian Journal of Medical Sciences Vol.9(1) 2018 27-31

Sign in / Sign up

Export Citation Format

Share Document