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Monitoring (medicine)
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<h2 id="classification-by-target-parameter">Classification by target parameter</h2> <p>Monitoring can be classified by the target of interest, including: </p> <ul><li><a href="/facts/Cardiac_monitoring/S4l46JQC">Cardiac monitoring</a>, which generally refers to continuous <a href="/facts/Electrocardiography/YpVswJ0W">electrocardiography</a> with assessment of the patient's condition relative to their cardiac rhythm. A small monitor worn by an ambulatory patient for this purpose is known as a <a href="/facts/Holter_monitor/CskFhGLn">Holter monitor</a>. Cardiac monitoring can also involve <a href="/facts/Cardiac_output/7JCDn6Ht">cardiac output</a> monitoring via an invasive <a href="/facts/Swan-Ganz_catheter/NyhzqcTR">Swan-Ganz catheter</a>.</li> <li><a href="/facts/Hemodynamic/HzubzJpn">Hemodynamic</a> monitoring, which monitors the <a href="/facts/Blood_pressure/VtqqSM2J">blood pressure</a> and <a href="/facts/Blood_flow/HzubzJpn">blood flow</a> within the circulatory system. Blood pressure can be measured either invasively through an inserted blood pressure <a href="/facts/Transducer/YS7zfv9d">transducer</a> assembly, or noninvasively with an inflatable blood pressure cuff.</li> <li><a href="/facts/Respiratory_monitoring/XSQ84JX9">Respiratory monitoring</a>, such as: <ul><li><a href="/facts/Pulse_oximetry/2xMWwKzK">Pulse oximetry</a> which involves measurement of the saturated percentage of <a href="/facts/Oxygen/acyn6o8r">oxygen</a> in the <a href="/facts/Blood/03zEulkj">blood</a>, referred to as SpO2, and measured by an <a href="/facts/Infrared/44XdJNcc">infrared</a> finger cuff</li> <li><a href="/facts/Capnography/35pFuFt8">Capnography</a>, which involves CO2 measurements, referred to as EtCO2 or end-tidal <a href="/facts/Carbon_dioxide/xGzpppEp">carbon dioxide</a> concentration. The respiratory rate monitored as such is called AWRR or airway respiratory rate)</li> <li>Respiratory rate monitoring through a thoracic transducer belt, an ECG channel or via capnography</li></ul></li> <li>Neurological monitoring, such as of <a href="/facts/Intracranial_pressure/GVyhAWpH">intracranial pressure</a>. Also, there are special patient monitors which incorporate the monitoring of brain waves (<a href="/facts/Electroencephalography/XGvpcBl5">electroencephalography</a>), gas anesthetic concentrations, <a href="/facts/Bispectral_index/gf8S2e3x">bispectral index</a> (BIS), etc. They are usually incorporated into anesthesia machines. In <a href="/facts/Neurosurgery/39HXY3tc">neurosurgery</a> intensive care units, brain EEG monitors have a larger multichannel capability and can monitor other physiological events, as well.</li> <li><a href="/facts/Blood_glucose_monitoring/yRjohBYM">Blood glucose monitoring</a></li> <li><a href="/facts/Childbirth/KaWFJ4kG">Childbirth monitoring</a></li> <li><a href="/facts/Body_temperature/V692hIjw">Body temperature</a> monitoring through an <a href="/facts/Adhesive_pad/CLyhPoqU">adhesive pad</a> containing a <a href="/facts/Thermoelectric/GbRYmwIG">thermoelectric</a> transducer.</li> <li>Cancer therapy monitoring through <a href="/facts/Circulating_tumor_cell/gG6YIAaB">circulating tumor cells</a><a class="footnote-ref" id="fnref:1" href="#fn:1"><sup>1</sup></a></li></ul> <h3>Vital parameters</h3> <p>Monitoring of <a href="/facts/Vital_parameters/kzxCHG45">vital parameters</a> can include several of the ones mentioned above, and most commonly include at least <a href="/facts/Blood_pressure/VtqqSM2J">blood pressure</a> and <a href="/facts/Heart_rate/YngB0bzg">heart rate</a>, and preferably also <a href="/facts/Pulse_oximetry/2xMWwKzK">pulse oximetry</a> and <a href="/facts/Respiratory_rate/Ja9lsl6E">respiratory rate</a>. Multimodal monitors that simultaneously measure and display the relevant vital parameters are commonly integrated into the bedside monitors in <a href="/facts/Critical_care_unit/j77VBgtt">critical care units</a>, and the <a href="/facts/Anesthetic_machine/eRvLKXQW">anesthetic machines</a> in <a href="/facts/Operating_room/zydvRK06">operating rooms</a>. These allow for continuous monitoring of a patient, with medical staff being continuously informed of the changes in general condition of a patient. Some monitors can even warn of pending fatal <a href="/facts/Cardiac/fF4KSGdk">cardiac</a> conditions before visible signs are noticeable to clinical staff, such as <a href="/facts/Atrial_fibrillation/Rzkq1tmN">atrial fibrillation</a> or <a href="/facts/Premature_ventricular_contraction/5jqhoQnl">premature ventricular contraction</a> (PVC). </p> <h2 id="medical-monitor">Medical monitor</h2> <p>A <i>medical monitor</i> or <i>physiological monitor</i> is a <a href="/facts/Medical_device/uzUHp474">medical device</a> used for monitoring. It can consist of one or more <a href="/facts/Sensor/RN8SXbjs">sensors</a>, processing components, <a href="/facts/Display_device/yX1Mypk0">display devices</a> (which are sometimes in themselves called "monitors"), as well as communication links for displaying or recording the results elsewhere through a monitoring network. </p> <h3>Components</h3> <h4>Sensor</h4> <p>Sensors of medical monitors include <a href="/facts/Biosensor/MaUAS0gD">biosensors</a> and mechanical sensors. For example, photodiode is used in pulse oximetry, Pressure sensor used in Non Invasive blood pressure measurement. </p> <h4>Translating component</h4> <p>The translating component of medical monitors is responsible for converting the signals from the sensors to a format that can be shown on the display device or transferred to an external display or recording device. </p> <h4>Display device</h4> <p>Physiological data are displayed continuously on a <a href="/facts/Cathode_ray_tube/8NVGx5C7">CRT</a>, <a href="/facts/LED/gE8x4MDb">LED</a> or <a href="/facts/LCD/8B6xGBEz">LCD</a> screen as <a href="/facts/Data_channel/MtlxEShV">data channels</a> along the time axis. They may be accompanied by numerical readouts of computed parameters on the original data, such as maximum, minimum and average values, pulse and respiratory frequencies, and so on. </p><p>Besides the tracings of physiological parameters along time (X axis), digital medical displays have automated numeric readouts of the peak and/or average parameters displayed on the screen. </p><p>Modern medical display devices commonly use <a href="/facts/Digital_signal_processing/PEG7azr8">digital signal processing</a> (DSP), which has the advantages of <a href="/facts/Miniaturization/SIAzbhzd">miniaturization</a>, portability, and multi-parameter displays that can track many different vital signs at once. </p><p>Old <a href="/facts/Analog_signal/xDbb4uB5">analog</a> patient displays, in contrast, were based on <a href="/facts/Oscilloscope/HMdD8XVk">oscilloscopes</a>, and had one channel only, usually reserved for electrocardiographic monitoring (<a href="/facts/ECG/YpVswJ0W">ECG</a>). Therefore, medical monitors tended to be highly specialized. One monitor would track a patient's <a href="/facts/Blood_pressure/VtqqSM2J">blood pressure</a>, while another would measure <a href="/facts/Pulse_oximetry/2xMWwKzK">pulse oximetry</a>, another the ECG. Later analog models had a second or third channel displayed on the same screen, usually to monitor <a href="/facts/Respiration_(physiology)/KKWAJIbd">respiration</a> movements and <a href="/facts/Blood_pressure/VtqqSM2J">blood pressure</a>. These machines were widely used and saved many lives, but they had several restrictions, including sensitivity to <a href="/facts/Electrical_interference/gv3DlKNr">electrical interference</a>, base level fluctuations and absence of numeric readouts and alarms. </p> <h4>Communication links</h4> <p>Several models of multi-parameter monitors are networkable, i.e., they can send their output to a central ICU monitoring station, where a single staff member can observe and respond to several bedside monitors simultaneously. Ambulatory telemetry can also be achieved by portable, battery-operated models which are carried by the patient and which transmit their data via a <a href="/facts/Wireless/GfDoFwfo">wireless</a> data connection. </p><p>Digital monitoring has created the possibility, which is being fully developed, of integrating the physiological data from the patient monitoring networks into the emerging hospital <a href="/facts/Electronic_health_record/0my0rktq">electronic health record</a> and digital charting systems, using appropriate health care standards which have been developed for this purpose by organizations such as <a href="/facts/IEEE/UddC4pUW">IEEE</a> and <a href="/facts/HL7/B4QPUQP0">HL7</a>. This newer method of charting patient data reduces the likelihood of human documentation error and will eventually reduce overall paper consumption. In addition, <a href="/facts/Automated_ECG_interpretation/FAe8cBqb">automated ECG interpretation</a> incorporates diagnostic codes automatically into the charts. Medical monitor's <a href="/facts/Embedded_software/zY8EeYCJ">embedded software</a> can take care of the data coding according to these standards and send messages to the medical records application, which decodes them and incorporates the data into the adequate fields. </p><p>Long-distance connectivity can avail for <a href="/facts/Telemedicine/zVSkAFrz">telemedicine</a>, which involves provision of <a href="/facts/Health_care/LPS1WKbI">clinical health care</a> at a distance. </p> <h4>Other components</h4> <p>A medical monitor can also have the function to produce an alarm (such as using audible signals) to alert the staff when certain criteria are set, such as when some parameter exceeds of falls the level limits. </p> <h3>Mobile appliances</h3> <p>An entirely new scope is opened with mobile carried monitors, even such in sub-skin carriage. This class of monitors delivers information gathered in body-area networking (<a href="/facts/Body_Area_Network/TjMGP3xT">BAN</a>) to e.g. <a href="/facts/Smart_phones/cSIrBMWG">smart phones</a> and implemented <a href="/facts/Autonomous_agent/WDb3UqAS">autonomous agents</a>. </p> <h2 id="interpretation-of-monitored-parameters">Interpretation of monitored parameters</h2> <p>Monitoring of clinical parameters is primarily intended to detect changes (or absence of changes) in the clinical status of an individual. For example, the parameter of <a href="/facts/Oxygen_saturation/UVhwuc26">oxygen saturation</a> is usually monitored to detect changes in <a href="/facts/Respiratory/IG8v5JEr">respiratory</a> capability of an individual. </p> <h3>Change in status versus test variability</h3> <p>When monitoring a clinical parameters, differences between test results (or values of a continuously monitored parameter after a time interval) can reflect either (or both) an actual change in the status of the condition or a <a href="/facts/Test-retest_variability/5usSzFkV">test-retest variability</a> of the test method. </p><p>In practice, the possibility that a difference is due to test-retest variability can almost certainly be excluded if the difference is larger than a predefined "critical difference". This "critical difference" (CD) is calculated as:<a class="footnote-ref" id="fnref:2" href="#fn:2"><sup>2</sup></a> </p><p> C D = K × C V a 2 + C V i 2 {\displaystyle CD=K\times {\sqrt {CV_{a}^{2}+CV_{i}^{2}}}} </p><p>, where:<a class="footnote-ref" id="fnref:3" href="#fn:3"><sup>3</sup></a> </p> <ul><li><i>K</i>, is a factor dependent on the preferred probability level. Usually, it is set at 2.77, which reflects a 95% <a href="/facts/Prediction_interval/0twP0IFI">prediction interval</a>, in which case there is less than 5% probability that a test result would become higher or lower than the critical difference by test-retest variability in the absence of other factors.</li> <li><i>CVa</i> is the analytical variation</li> <li><i>CVi</i> is the <a href="/facts/Intra-individual_variability/xqevRHmz">intra-individual variability</a></li></ul> <p>For example, if a patient has a hemoglobin level of 100 g/L, the analytical variation (<i>CVa</i>) is 1.8% and the intra-individual variability <i>CVi</i> is 2.2%, then the critical difference is 8.1 g/L. Thus, for changes of less than 8 g/L since a previous test, the possibility that the change is completely caused by test-retest variability may need to be considered in addition to considering effects of, for example, diseases or treatments. </p> Critical differences for some <a href="/facts/Blood_test/zevsf3rC">blood tests</a><a class="footnote-ref" id="fnref:4" href="#fn:4"><sup>4</sup></a><table><tbody><tr><td><a href="/facts/Sodium/eYuSPu2V">Sodium</a></td><td>3%</td></tr><tr><td><a href="/facts/Potassium/FWPwS7Rj">Potassium</a></td><td>14%</td></tr><tr><td><a href="/facts/Chloride/m9NUaUDR">Chloride</a></td><td>4%</td></tr><tr><td><a href="/facts/Urea/6j84AoCG">Urea</a></td><td>30%</td></tr><tr><td><a href="/facts/Creatinine/gkebqj2L">Creatinine</a></td><td>14%</td></tr><tr><td><a href="/facts/Calcium/hf252CC0">Calcium</a></td><td>5%</td></tr><tr><td><a href="/facts/Albumin/gDmSgAH2">Albumin</a></td><td>8%</td></tr><tr><td><a href="/facts/Fasting_glucose/2UQUR5fJ">Fasting glucose</a></td><td>15%</td></tr><tr><td><a href="/facts/Amylase/H1MPNNVL">Amylase</a></td><td>30%</td></tr><tr><td><a href="/facts/Carcinoembryonic_antigen/BsUw6QhN">Carcinoembryonic antigen</a></td><td>69%</td></tr><tr><td><a href="/facts/C-reactive_protein/oxn2DAoK">C-reactive protein</a></td><td>43%<a class="footnote-ref" id="fnref:5" href="#fn:5"><sup>5</sup></a></td></tr><tr><td><a href="/facts/Glycated_hemoglobin/jTNaU7Jv">Glycated hemoglobin</a></td><td>21%</td></tr><tr><td><a href="/facts/Hemoglobin/RsD1MzYA">Hemoglobin</a></td><td>8%</td></tr><tr><td><a href="/facts/Erythrocytes/Kggpq8Jh">Erythrocytes</a></td><td>10%</td></tr><tr><td><a href="/facts/Leukocytes/vsDunUK0">Leukocytes</a></td><td>32%</td></tr><tr><td><a href="/facts/Platelets/I0xrDVGa">Platelets</a></td><td>25%</td></tr><tr><td colspan="2">Unless otherwise specified, then reference for critical values is <i>Fraser 1989</i><a class="footnote-ref" id="fnref:6" href="#fn:6"><sup>6</sup></a></td></tr></tbody></table> <p>Critical differences for other tests include early morning urinary albumin concentration, with a critical difference of 40%.<a class="footnote-ref" id="fnref:7" href="#fn:7"><sup>7</sup></a> </p> <h3>Delta check</h3> <p>In a clinical laboratory, a <i>delta check</i> is a <a href="/facts/Laboratory_quality_control/ppwXn1N0">laboratory quality control</a> method that compares a current test result with previous test results of the same person, and detects whether there is a substantial difference, as can be defined as a critical difference as per previous section, or defined by other pre-defined criteria. If the difference exceeds the pre-defined criteria, the result is reported only after manual confirmation by laboratory personnel, in order to exclude a laboratory error as a cause of the difference.<a class="footnote-ref" id="fnref:8" href="#fn:8"><sup>8</sup></a> In order to flag samples as deviating from previously, the exact cutoff values are chosen to give a balance between <a href="/facts/Sensitivity_and_specificity/pzc9qfdz">sensitivity</a> and the risk of being overwhelmed by false-positive flags.<a class="footnote-ref" id="fnref:9" href="#fn:9"><sup>9</sup></a> This balance, in turn, depends on the different kinds of clinical situations where the cutoffs are used, and hence, different cutoffs are often used at different departments even in the same hospital.<a class="footnote-ref" id="fnref:10" href="#fn:10"><sup>10</sup></a> </p> <h2 id="techniques-in-development">Techniques in development</h2> <p>The development of new techniques for monitoring is an advanced and developing field in smart medicine, biomedical-aided <a href="/facts/Integrative_medicine/XwFG5qtK">integrative medicine</a>, <a href="/facts/Alternative_medicine/XwFG5qtK">alternative medicine</a>, <a href="/facts/Personalized_medicine/rawUyWgd">self-tailored</a> <a href="/facts/Preventive_medicine/pWGlacXu">preventive medicine</a> and <a href="/facts/Predictive_medicine/Xt9B9rH2">predictive medicine</a> that emphasizes monitoring of comprehensive medical data of patients, people at risk and healthy people using advanced, smart, minimally <a href="/facts/Invasiveness_of_surgical_procedures/Lm4xbpYG">invasive</a> <a href="/facts/Biomedical_engineering/TNAa3sqa">biomedical devices</a>, <a href="/facts/Biosensors/MaUAS0gD">biosensors</a>, <a href="/facts/Lab-on-a-chip/5ABHeIdC">lab-on-a-chip</a> (in the future <a href="/facts/Nanomedicine/dDx1NcxA">nanomedicine</a><a class="footnote-ref" id="fnref:11" href="#fn:11"><sup>11</sup></a><a class="footnote-ref" id="fnref:12" href="#fn:12"><sup>12</sup></a> devices like <a href="/facts/Nanorobots/LmFlh2IJ">nanorobots</a>) and advanced <a href="/facts/Artificial_intelligence/lJGauQwX">computerized</a> <a href="/facts/Medical_diagnosis/J47rvb0p">medical diagnosis</a> and early warning tools over a short clinical interview and <a href="/facts/Medical_prescription/4jt1T3mY">drug prescription</a>. </p><p>As <a href="/facts/Biomedical_research/lSVBFxDJ">biomedical research</a>, <a href="/facts/Nanotechnology/Co4FFNfY">nanotechnology</a> and <a href="/facts/Nutrigenomics/TGCk9mPe">nutrigenomics</a> advances, realizing the human body's <a href="/facts/Self-healing/rv8rlqcy">self-healing</a> capabilities and the growing awareness of the limitations of <a href="/facts/Health_intervention/lmmcQtjj">medical intervention</a> by chemical <a href="/facts/Drugs/FFFUI9n4">drugs</a>-only approach of old school medical treatment, new researches that shows the enormous damage medications can cause,<a class="footnote-ref" id="fnref:13" href="#fn:13"><sup>13</sup></a><a class="footnote-ref" id="fnref:14" href="#fn:14"><sup>14</sup></a> researchers are working to fulfill the need for a comprehensive further study and personal continuous <a href="/facts/Monitoring_in_clinical_trials/sHpLxIue">clinical monitoring</a> of health conditions while keeping legacy medical intervention as a last resort. </p><p>In many medical problems, drugs offer temporary relief of symptoms while the <a href="/facts/Functional_medicine/DCdEedda">root</a> of a medical problem remains unknown without enough data of all our <a href="/facts/Biological_system/yKqVbaxu">biological systems</a><a class="footnote-ref" id="fnref:15" href="#fn:15"><sup>15</sup></a> . Our body is equipped with sub-systems for the purpose of maintaining balance and self healing functions. Intervention without sufficient data might damage those healing sub systems.<a class="footnote-ref" id="fnref:16" href="#fn:16"><sup>16</sup></a> Monitoring medicine fills the gap to prevent diagnosis errors and can assist in future medical research by analyzing all <a href="/facts/Data_acquisition/W7d5DrPl">data</a> of many patients. </p> <h3>Examples and applications</h3> <p>The development cycle in medicine is extremely long, up to 20 years, because of the need for U.S. <a href="/facts/Food_and_Drug_Administration/rCEnh9WB">Food and Drug Administration</a> (FDA) approvals, therefore many of monitoring medicine solutions are not available today in conventional medicine. </p> Blood glucose monitoring <a href="/facts/In_vivo/kWcWyl6f">In vivo</a> <a href="/facts/Blood_glucose_monitoring/yRjohBYM">blood glucose monitoring</a> devices can transmit data to a computer that can assist with daily life suggestions for <a href="/facts/Lifestyle_(sociology)/XVb7A8lN">lifestyle</a> or <a href="/facts/Nutrition/SMJ3Dhfs">nutrition</a> and with the <a href="/facts/Physician/qJ3woFvG">physician</a> can make suggestions for further study in people who are at risk and help prevent <a href="/facts/Diabetes_mellitus_type_2/zCMXksmt">diabetes mellitus type 2</a> .<a class="footnote-ref" id="fnref:17" href="#fn:17"><sup>17</sup></a> Stress monitoring Bio sensors may provide warnings when stress levels signs are rising before human can notice it and provide alerts and suggestions.<a class="footnote-ref" id="fnref:18" href="#fn:18"><sup>18</sup></a> Deep neural network models using photoplethysmography imaging (PPGI) data from mobile cameras can assess stress levels with a high degree of accuracy (86%).<a class="footnote-ref" id="fnref:19" href="#fn:19"><sup>19</sup></a> Serotonin biosensor Future <a href="/facts/Serotonin/EzY58q4a">serotonin</a> biosensors may assist with <a href="/facts/Mood_(psychology)/mnozVozL">mood</a> disorders and <a href="/facts/Depression_(mood)/GDNFWm1L">depression</a>.<a class="footnote-ref" id="fnref:20" href="#fn:20"><sup>20</sup></a> Continuous blood test based nutrition In the field of <a href="/facts/Evidence-based_nutrition/InK1lB9l">evidence-based nutrition</a>, a <a href="/facts/Lab-on-a-chip/5ABHeIdC">lab-on-a-chip</a> <a href="/facts/Implant_(medicine)/3PKvy4I2">implant</a> that can run 24/7 <a href="/facts/Blood_test/zevsf3rC">blood tests</a> may provide a continuous results and a computer can provide nutrition suggestions or alerts. Psychiatrist-on-a-chip In clinical brain sciences <a href="/facts/Drug_delivery/vDfboXeT">drug delivery</a> and in vivo <a href="/facts/Bio-MEMS/IIcJM9xy">Bio-MEMS</a> based <a href="/facts/Biosensor/MaUAS0gD">biosensors</a> may assist with preventing and early treatment of mental disorders Epilepsy monitoring In <a href="/facts/Epilepsy/wawyp56a">epilepsy</a>, next generations of <a href="/facts/Long-term_video-EEG_monitoring/4r8k0LAo">long-term video-EEG monitoring</a> may predict <a href="/facts/Epileptic_seizure/zuIrQyze">epileptic seizure</a> and prevent them with changes of daily life activity like <a href="/facts/Sleep/0bSDElWc">sleep</a>, <a href="/facts/Stress_(biology)/H29jPp2B">stress</a>, <a href="/facts/Nutrition/SMJ3Dhfs">nutrition</a> and <a href="/facts/Mood_(psychology)/mnozVozL">mood</a> management.<a class="footnote-ref" id="fnref:21" href="#fn:21"><sup>21</sup></a> Toxicity monitoring Smart biosensors may detect toxic materials such <a href="/facts/Mercury_(element)/WlxfoHva">mercury</a> and <a href="/facts/Lead/EYljasJN">lead</a> and provide alerts.<a class="footnote-ref" id="fnref:22" href="#fn:22"><sup>22</sup></a> <h3>Minimum standards of monitoring</h3> <p>Minimum acceptable monitoring </p><p>1. Clinical observation (one-to-one) 2. Pulse oximetry 3. Non-invasive blood pressure 4. ECG 5. Core temperature 6. End-tidal carbon dioxide (if tracheal tube or supraglottic airway device in situ) </p><p>Additional monitoring which should be immediately available </p><p>1. Blood/capillary glucose 2. Nerve stimulator </p><p>Additional monitoring which should be available </p><p>1. Urine output 2. Invasive pressure monitoring (arterial line, central venous pressure) 3. Cardiac output monitoring 4. Access to haematological and biochemical investigations </p> <h3>Essential Monitoring</h3> <p>Presence of the anaesthetist throughout anaesthesia </p><p>A. Induction and maintenance of anaesthesia </p><p>1. Pulse oximeter 2. Non-invasive blood pressure monitoring 3. Inspired and expired oxygen, carbon dioxide, <a href="/facts/Nitrous_oxide/Jvys91lI">nitrous oxide</a> and vapour 4. Airway pressure 5. A nerve stimulator whenever a muscle relaxant is used 6. Temperature (pre-op) and for any procedure >30 min anaesthesia duration </p><p>B. Recovery from anaesthesia </p><p>1. Pulse oximeter 2. Non-invasive blood pressure monitor 3. Electrocardiograph 4. Capnograph if the patient has a tracheal tube or supraglottic airway device in situ, or is deeply sedated 5. Temperature </p><p>C. Additional monitoring </p><p>1. Some patients will require additional monitoring: e.g. intravascular pressures, cardiac output. 2. Depth of anaesthesia monitors recommended when patients are anaesthetised with total intravenous techniques. </p><p>D. Regional techniques & sedation for operative procedures </p><p>1. Pulse oximeter 2. Non-invasive blood pressure monitoring 3. Electrocardiograph 4. End-tidal carbon dioxide monitor if the patient is sedated.<a class="footnote-ref" id="fnref:23" href="#fn:23"><sup>23</sup></a> </p> <h2 id="see-also">See also</h2> <ul><li><a href="/facts/Medical_equipment/uzUHp474">Medical equipment</a></li> <li><a href="/facts/Medical_test/rRgnuQSD">Medical test</a></li> <li><a href="/facts/MECIF_Protocol/AoHLxDXc">MECIF Protocol</a></li> <li><a href="/facts/Nanoelectromechanical_system/S5ukNbuc">Nanoelectromechanical system</a> (NEMS)</li> <li><a href="/facts/Functional_medicine/DCdEedda">Functional medicine</a></li> <li><a href="/facts/Wireless_ambulatory_ECG/Qo3Ecvxr">Wireless ambulatory ECG</a></li></ul> <h2 id="further-reading">Further reading</h2> <ul><li><i>Monitoring Level of Consciousness During Anesthesia & Sedation </i>, Scott D. Kelley, M.D., <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 978-0-9740696-0-9</li> <li><i>Healthcare Sensor Networks: Challenges Toward Practical Implementation</i>, Daniel Tze Huei Lai (Editor), Marimuthu Palaniswami (Editor), Rezaul Begg (Editor), <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 978-1-4398-2181-7</li> <li><i>Blood Pressure Monitoring in Cardiovascular Medicine and Therapeutics (Contemporary Cardiology)</i>, William B. White, <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 978-0-89603-840-0</li> <li><i>Physiological Monitoring and Instrument Diagnosis in Perinatal and Neonatal Medicine</i>, Yves W. Brans, William W. Hay Jr, <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 978-0-521-41951-2</li> <li><i>Medical Nanotechnology and Nanomedicine (Perspectives in Nanotechnology)</i>, Harry F. Tibbals, <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 978-1-4398-0874-0</li></ul> <h2 id="external-links">External links</h2> <ul><li> Media related to Medical monitoring at Wikimedia Commons</li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>Pachmann, Katharina; Camara, Oumar; Kohlhase, Annika; Rabenstein, Carola; Kroll, Torsten; Runnebaum, Ingo B.; Hoeffken, Klaus (2010-08-08). "Assessing the efficacy of targeted therapy using circulating epithelial tumor cells (CETC): the example of SERM therapy monitoring as a unique tool to individualize therapy". Journal of Cancer Research and Clinical Oncology. 137 (5): 821–828. doi:10.1007/s00432-010-0942-4. ISSN 0171-5216. PMC 3074080. PMID 20694797. <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3074080" target="_blank">https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3074080</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>Fraser, C. G.; Fogarty, Y. (1989). "Interpreting laboratory results". BMJ (Clinical Research Ed.). 298 (6689): 1659–1660. doi:10.1136/bmj.298.6689.1659. PMC 1836738. PMID 2503170. <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1836738" target="_blank">https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1836738</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>Fraser, C. G.; Fogarty, Y. (1989). "Interpreting laboratory results". BMJ (Clinical Research Ed.). 298 (6689): 1659–1660. doi:10.1136/bmj.298.6689.1659. PMC 1836738. PMID 2503170. <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1836738" target="_blank">https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1836738</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> <li id="fn:4"><p>Fraser, C. G.; Fogarty, Y. (1989). "Interpreting laboratory results". BMJ (Clinical Research Ed.). 298 (6689): 1659–1660. doi:10.1136/bmj.298.6689.1659. PMC 1836738. 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