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  3. Chest compressions should be performed using the heel of your hand in the middle of the chest (breastbone). Older CPR guidelines referenced measuring to find the correct position, however, this is no longer recommended in more recent CPR guidelines as this wastes valuable time during a cardiac arrest emergency

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Where to Perform Chest Compressions during CPR - CPR Tes

COMPRESSIONS When performing chest compressions, proper hand placement is very important. To locate the correct hand position place two fingers at the sternum (the spot where the lower ribs meet) then put the heel of your other hand next to your fingers (Figure 1). Place one hand on top of the other and interlace the fingers (Figure 2) In adult victims of cardiac arrest, it is reasonable for rescuers to perform chest compressions at a rate of 100 to 120/min and to a depth of at least 2 inches (5 cm) for an average adult, while avoiding excessive chest compression depths (greater than 2.4 inches [6 cm]) The most recent American Heart Association guidelines set the target depth for chest compressions performed on adults as at least 2 inches but no more than 2.4 inches. This is the recommended depth, regardless of whether the patient is male or female. Prior to 2015, the recommended depth was greater, however, research by the AH

Place the baby on his or her back on a firm, flat surface, such as a table or floor. Imagine a horizontal line drawn between the baby's nipples. Place two fingers of one hand just below this line, in the center of the chest. Gently compress the chest about 1.5 inches (about 4 centimeters) Chest compressions are hard work and after 100 chest compressions or if you become fatigued, it is recommended that you switch chest comrpessions with someone nearby. To transfer chest compressions effectively, there must be less than a 10 second delay when trading off

CPR Hand Placement - Positioning Your Hands for Chest

  1. Compressions should be delivered on the thoracic spine at the same rate and force as in the supine position. Both hands should be interlocked and placed on the patient's back on the midthoracic spine T7 landmark. Provide sternal counter pressure such as sandbags or 1-litre fluid bags under the patient's chest
  2. Identifying the optimal hand placement site for chest compression by measuring hand width and sternal length in young adults To find the most optimal chest compression point, from the patients' left side, CPR providers need to palpate the SN using the right little finger and placing the left heel one heel width (H2) from the SN
  3. We hypothesized that chest compressions located directly over the LV would increase ROSC when compared with traditional compressions in a swine model of TCA where REBOA is used in the resuscitation of all animals
  4. Background: Recent evidence demonstrates that closed chest compressions directly over the left ventricle (LV) in a traumatic cardiac arrest (TCA) model improve hemodynamics and return of spontaneous circulation (ROSC) when compared to traditional compressions
  5. ister compressions that are at least 2 inches deep and delivered at a rate of at least 100 compressions per
  6. By virtue of their shared anatomic location, the heart and lungs are mechanically coupled. Positive pressure ventilation, chest compression, and chest recoil all have meaningful consequences for cardiac preload, thoracic venous return, and CPP (because the downstream pressure is the right atrial pressure)
  7. To carry out chest compressions on a baby: Lie the baby/infant on their back. Place 2 fingers on the lower half of the breastbone in the middle of the chest and press down by one-third of the depth of the chest (you may need to use one hand to do CPR depending on the size of the infant). Release the pressure

The following video is part of two that have been produced to provide updated guidance for the process of resuscitation for adult patients with any risk of C.. Methods 114 patients with cardiac arrest who underwent chest CT after successful resuscitation from January 2006 to August 2009 were included in the study. To evaluate the area of the cardiac chambers subjected to external chest compression, the area of each cardiac chamber under the sternum was measured using cross-sectional CT at three different locations: the internipple line on the sternum. Do Chest Compressions Place the heel of your hand on the center of the person's chest. Place the heel of your other hand on top of your first hand, lacing fingers together. Keep arms straight and.. Thumbs remain on sternum between compressions. OR Tips of two fingers; middle finger and index or ring finger Positioned perpindicular to the chest on the lower half of sternum. Tips of fingers remain on sternum between compressions. Rescuer 1 coordinates ventilations with compressions. After 30 seconds of CPR, Rescuer 2 checks pulse After adjustment for age, gender, location, bystander cardiopulmonary resuscitation, bystander witness status, and response time, the odds ratios of surviving to hospital discharge in the 2 highest categories of chest compression fraction compared with the reference category were 3.01 (95% confidence interval 1.37 to 6.58) and 2.33 (95%.

Closed chest compressions directed over the LV did not result in a significantly higher rate of ROSC or short-term survival compared to chest compressions in the traditional location when SAAP with unoxygenated blood was used in this swine model of TCA; however, a larger study may demonstrate that there is a difference in chest compressions and therefore maximize the amount of time chest compressions generate blood flow.9,24 CCF is the proportion of time that chest compressions are performed during a cardiac arrest. The duration of arrest is defined as the time cardiac arrest is first identified unti

Regional variability in chest wall thickness may be partially explained by differences in BMI, thus in the USA and other western countries where BMI is higher, a change may be necessary in needle thoracostomy location or catheter length, but in other parts of the world, ICS2-MCL decompression may still be appropriat Place 2 fingers in the center of his chest just below the nipple line; do not press on the end of the breastbone. Provide 100-120 chest compressions per minute to a depth of 1/3 the depth of the chest or approximately 1 ½ inches. The principles of providing breaths for infants are the same as for children and adults

Contact Us. National Center 7272 Greenville Ave. Dallas, TX 75231. Customer Service 1-800-AHA-USA-1 1-800-242-8721 Contact Us. Hours Monday - Friday: 7AM - 9PM CS Chest compressions-only CPR is a rescue method that can save lives if performed correctly. Unlike traditional CPR, which involves mouth-to-mouth resuscitation (otherwise known as 'rescue breathing'), chest compressions-only CPR removes the artificial ventilation factor and focuses only on bringing the heart into a natural rhythm Compression depth of at least 50 mm (2 inches) in adults and at least 1/3 the AP dimension of the chest in infants and children No excessive ventilation AHA resuscitation training programs help you achieve this level of competency through both individual and team skills practice and testing in a variety of real-world circumstances and settings Use the one-handed technique, wrapping the hand over sternum and chest. Give 30 chest compressions (100-120x/minute). Allow the chest to fully recoil between compressions. Give two mouth-to-snout rescue breaths after each set of compressions (30:2). For Medium to Giant Dogs: Position the animal on its side The compressions must be 1/3 to 1/2 of the depth of the chest ( Difference 4 ), instead of 1 1/2 to 2 inches in case of an adult. Bring your shoulders directly over the child's sternum and press down, keeping your arm (s) straight. 5. Then completely relax the pressure on the sternum. Don't remove your hands from the victim's sternum, but do.

Often, chest compressions are unknowingly performed over the left ventricle outflow tract (LVOT), resulting in an impeded left ventricle ejection. Rats were randomized to receive chest compression performed either on the lower sternal half (standard positioning) or on an optimal thorax point, identified as the one able to generate the highest. Thoracic outlet syndrome (TOS) is a term used to describe a group of disorders that occur when there is compression, injury, or irritation of the nerves and/or blood vessels (arteries and veins) in the lower neck and upper chest area. Learn about Causes, Symptoms, Treatment and Therapy Options from the number one heart center, Cleveland Clinic Briefly, the study must have assessed chest wall thickness using either computed tomographic imaging, or directly using a cadaveric study. Studies using ultrasound were excluded based on variable compression. Needle thoracostomy failure was assessed for articles which included a 5 cm angiocatheter, and excluded if another length was used The above findings revealed that fast compression would lead to premature fatigue, eventually shallow compression depth, inaccurate hands location, decreased compression rate, and worse chest wall recoil. Therefore, the operator could improve the quality of chest compression by controlling the frequency to delay the fatigue, especially to keep.

CPR - adult - series—Chest compressions: MedlinePlus

Patients with a chest compression fraction of >60% had the highest survival, with an adjusted OR for survival to hospital discharge of 1.11 (1.01 to 1.21) per 10% increase in chest compression fraction .22 Chest compression fraction is also a complex measure because of its potential interaction with other CPR metrics such that its. Odegaard S, Saether E, Steen PA, Wik L. Quality of lay person CPR performance with compression: ventilation ratios 15:2, 30:2 or continuous chest compressions without ventilations on manikins. • The best location for performing a pulse check for a child is the carotid artery of the neck. On an infant up to the age of one year, check the brachial pulse • You should start cycles of chest compression and breathing when the victim is unresponsive, is not breathing adequately, and does not have a pulse. The central problem of doctors in the west Midlands being told not to start chest compressions in patients who are in cardiac arrest if they have suspected or diagnosed covid-19 is a lack of evidence on whether chest compressions are an aerosol generating procedure (AGP) that can spread coronavirus.1 In 2007, the World Health Organization recommended cardiopulmonary resuscitation (CPR) was an AGP Impaled Chest Objects. The only way an impaled object would keep you from performing chest compressions is if the object were in the exact location. If that's the case, all you can do is call 911, keep the scene safe, and do whatever you can do to control bleeding or other issues

Hand Placement for Proper Chest Compressions - Newnan CP

recommended chest compression location. Patients and Methods Study Design and Participants A retrospective cohort study was conducted to evaluate the chest CT in out-of-hospital cardiac arrest patients older than 18 years who had been admitted to the emergency department in cardiac arrest and resuscitated after CPR. The study wa A compression fracture may put pressure on a nerve, causing pain. When to go to a doctor Anyone with unexplained chest pain should see a doctor, who can run tests to determine the underlying cause. Symptoms vary based on the type of nerve compression syndrome and location. They tend to occur at the site of the compression, and sometimes in surrounding areas and structures The Compression Module contains the Control Panel, a removable and rechargeable battery pack, and the piston drive used to generate the chest compressions. Modularization of the Compression Piston has benefits in all phases of use, particularly during deployment and repacking

Two Rescuers: Rescuer One should hold the infant and place their thumbs in the location instructed on the victim's chest to give compressions while Rescuer Two uses a one-way valve device over the victim's mouth and nose. A ratio of 15:2 chest compressions to rescue breaths should be the standard, giving one breath every 6 seconds for a. thrusts in the same location as chest compressions - just below the nipple line. Deliver chest thrusts at a rate of about 1 per second, each with the intention of creating enough of an artificial cough to dislodge the foreign body. 8 - Repeat the sequence of up to 5 bac

Put two fingers on the center of the infant's chest, directly on the sternum and slightly below the nipple line. The depth of compression for infants is about 1½ inches (or 1/3 the anteriorposterior diameter of the chest). However, the rate of compressions is the same as adults and children - 100-120 compressions per minute correct chest compressions rate according to European Resuscitation Council 2015 guidelines for cardiopulmonary resuscitation. hands-off time [ Time Frame: 1 day ] defined as the sum of all periods during which no hand was placed on the chest minus time used for ventilation Press Release Mechanical Chest Compression Devices market Size, Share, Value, And Competitive Landscape 2021-2026 Published: July 5, 2021 at 7:24 a.m. E Perform compressions on a child using one or two-handed chest compressions depending on the size of the child. Compression depth should be one-third of the chest depth; for most infants, this is about 1.5 inches (4 cm). Compression depth should be one-third of the chest depth; for most children, this is about 2 inches (5 cm) Start chest compressions immediately. Combine chest compressions with rescue breaths, providing 2 breaths after every 30 compressions. 7. Chest compressions: general guidance. To avoid compressing the stomach, find the point where the lowest ribs join in the middle, and then 1 finger's width above that. Compress the breastbone

CPR in Adults: Positioning Your Hands for Chest Compression

7. A heart attack or angina. Okay, sure, having chest tightness could signal that you're having a heart attack or angina, which is chest pain caused by reduced blood flow to your heart (and a. Allow complete recoil of chest after each compression; do not lean on the chest after each compression: Minimizing interruptions: Limit interruptions in chest compressions to less than 10 seconds with a CCF goal of 80% *Compression depth should be no more than 2.4 inches (6 cm)

CPR Steps Perform CPR Red Cros

Purpose: Lengthy resuscitations in the catheterisation laboratory carry extremely high rates of mortality because it is essentially impossible to perform effective chest compressions during percutaneous coronary intervention (PCI). The purpose of this study was to evaluate the use of a mechanical chest compression device, LUCAS, in the catheterisation laboratory, in patients who suffered. We recommend a manual chest compression rate of 100 to 120/min (strong recommendation, very-low-quality evidence). Values, Preferences, and Task Force Insights In making this recommendation, we place a high value on compatibility with the previous guidelines recommendation of a lower compression threshold of at least 100/min to minimize additional training and equipment costs (eg. Product Title Faja Girdle For Men Seamless Compression Shirt Back Average rating: 0 out of 5 stars, based on 0 reviews Current Price $50.90 $ 50 . 90 List List Price $61.08 $ 61 . 0 A plunger adapter and a detachable compression pad for piston driven chest compression devices optimizes the application of chest compressions to a fixed location on a patient's chest. The detachable compression pad may be removably secured to the patient above the patient's sternum to ensure that the compression pressure from the piston through the piston adapter is applied to a fixed.

We evaluated the applicability of the neck and sternal notch (SN) as anatomical landmarks for paediatric chest compression (CC) depth using chest computed tomography. The external anteroposterior. A paramedic who testified at the trial of Derek Chauvin on Thursday criticized Minneapolis police officers for not doing chest compressions on George Floyd at the scene, saying any layperson. Chest Compressions. After introducing your topic and focus you can then begin to build your essay. The body of your essay should progress through a discussion of chest compression of resuscitation and its components as it relates to the guideline, eg. Compressions rate, depth, ratios, interruptions, hand placement etc The study found that the average chest compression rate used by EMS providers across ROC sites was 112 compressions/minute. One-third of patients received a rate greater than 120/minute, and 7%. LUCAS® 3 Chest Compression System - Service Manual 3328798-002, ©2017 Physio-Control, Inc. Page 11 of 91. Electronics Block Diagram . Linear . Electric . LUCAS is driven by a rechargeable Lithium Ion Polymer (LiPo) Battery. The Battery can be charged during operation by an external Power Supply, connected to a wall outlet, or with a Car.

Adult CPR - Compression

  1. utes and survival to discharge. Among 142,906 OHCA patients, 820 patients were finally included
  2. What is Mini Baby? Mini Baby is a low cost CPR kit which includes an inflatable full body infant manikin model as a component of a Self Directed Learning - CPR program, for Basic Life Support (BLS) training. Manikin's chest is capable of being compressed with audible clicker feedback on compression depth, and visible chest rise for ventilations
  3. A chest compression monitor for measuring the depth of chest compressions achieved during CPR. A sensor of the chest compression monitor is disposed within its housing such that compression of the housing due to CPR compressions, and its resultant deformation, is detected by the sensor and used by the control system as the starting point for calculating chest compression depth based on an.
  4. Lung conditions. Some lung conditions may cause upper back and chest pain: Pleurisy is inflammation of the linings (pleura) of the lungs and chest wall. 6. Lung cancer tumor (s) may grow in a manner that eventually causes pain in the chest and upper back (or shoulder). 7,8. Painful lung conditions may also involve increased pain when breathing
  5. There is no charge for MedStar's chest compression training. Host locations should provide an adequate space and setting for attendees, audio / visual equipment for presenting a DVD and a 6-foot table. MedStar will provide the training materials and Chest Compression Champ cards for those who complete the session
  6. WOW MSRP $8000 Recent Model 2019 RESPIRTECH inCourage ICS-1M-US With Vest (Size 34) Chest Compression Therapy Airway Clearance Device - Used One Just Sold Online For $2000 - Excellent Working Condition - 1st Pic Stock Photo! | #1289 FANTASTIC MEDICAL AUCTION! | K-BI

What is CPR American Heart Association CPR & First Ai

Chest Compressions 101: How Deep and at What Rate

In these cases, do a conventional CPR combination of chest compressions and rescue breathing. Note: For hands-only CPR instructions, watch this video from the American Heart Association. 2 The Dynamic Compression Brace is not a good alternative for young people who require more than 7.5 psi compression to achieve correction. Minimally Invasive Pectus Carinatum Surgery at CHKD. Our Location. A. Children's Hospital of The King's Daughters. 601 Children's Lane. Norfolk, VA 23507

The old guidelines, implemented in 1966, and updated regularly since, recommended the ABC's of CPR Airway, Breathing, Circulation - which meant that rescue breathing, frequently referred to as mouth-to-mouth, come first, then chest pumping. We have recognized 'Compression Only CPR' as a valid alternative for untrained rescuers for some. The LUCAS 3.1 Chest Compression System has been designed to deliver uninterrupted chest compressions at a consistent rate and depth, whether in the field, during transport, and throughout the hospital. It also frees up the rescuers from chest compressions, allowing them to attend to other critical issues In the first study, emergency dispatchers in Seattle and King County, WA. advised bystanders to give 981 patients chest compressions alone, and 960 were given chest compressions and rescue breathing If the victim's airway is open, allowing the chest to expand back to its normal position after each compression may also bring some oxygen into the lungs. For these reasons, the most important thing someone near the victim can do for a person in sudden cardiac arrest is to pump blood to the brain and to the heart muscle, delivering the oxygen. Chest Compressions for Adults. Pulse check location- for an infant, it is easiest to check for a pulse using the brachial artery. To locate the brachial artery, place 2 or 3 fingers on the inside of the upper arm between the shoulder and elbow. Press the fingers gently for 5 to 10 seconds to feel for a pulse

Cardiopulmonary resuscitation (CPR): First aid - Mayo Clini

Chest Compression Fraction: is the total percentage of resuscitation time when performed by the rescuer(s) during cardiac arrest. Whether intended or unintended interruptions (such as real-world delays) occur Chest Compression Fraction aims to minimize pauses in chest compressions. Chest Compression Fraction Goal: target of at least 60 Chest compression depth and rate during cardiopulmonary resuscitation (CPR) are important predictors of return of spontaneous circulation and survival following cardiac arrest. Stiell et al (2014) found optimal survival at a compression depth of 4.56cm, which is at variance with the current guidelines of 5.0-6.0cm

Child CPR - Compressions. COMPRESSIONS. When performing chest compressions on a child proper hand placement is even more crucial than with adults. Place two fingers at the sternum (the bottom of the rib cage where the lower ribs meet) and then put the heel of your other hand directly on top of your fingers (Figure 1) Performing only chest compressions to help keep the blood flowing during a heart attack can be as effective as standard cardiopulmonary resuscitation, or CPR, that includes mouth-to-mouth breathing, says a new study. The technique forces air into the lungs, which can help a heart attack victim survive three to five minutes long - possibly enoug The Halo Chest Seal was one of the first chest seals made commercially. It's no-frills and works very simply. It is essentially a sterile piece of plastic with an adhesive backing. To use it, clean the wound (basically just wipe off the blood and any dirt to make sure the adhesive will stick) and apply the chest seal. 2 

5. Conclusion. Real-time chest compression quality measurement by smartphone camera is feasible for a range of bystanders, compression rates, camera positions, and noise conditions. This technology may be used to measure and improve the quality of telephone CPR and minimize hands-off times of chest compressions and clinical outcomes. The purpose of this analysis was to assess whether CCRV, the maximal velocity of chest compression release in the posterior to anterior direction, is associated with improved survival to hospital discharge and a favorable neurologic outcome after adult OHCA. 2. Methods 2.1. Study setting Dat The depth of chest compressions for an infant is at least one third the depth of the chest, approximately 1½ or 1.5 inches (4cm). Recommended rate for performing chest compressions for victims of all ages is at least 100/120 compressions per minute. One may also ask, when administering CPR What is the depth of compression When you have chest pain, your first thought may be that it's a heart attack. However, other less serious conditions can also cause chest pain. Learn more here

Frequently Asked Questions about Chest-Compression-Only

In chest compression for cardiopulmonary resuscitation (CPR), the lower half of the sternum is pressed according to the American Heart Association (AHA) guidelines 2010. These have been no studies which identify the exact location of the applied by individual chest compressions. We developed a rubber power-flexible capacitive sensor that could measure the actual pressure point of chest. Minimum depth of chest compression: compression depth for adults is a minimum of 5 cm/2 in. Compression depth for a child is at least ? the depth of the chest size, or 5 cm for a child and 4 cm for an infant. Similarly, you may ask, when performing infant CPR the depth of the compression should be? Push hard, push fast: Compress at a rate of at. Standard Chest Compression Ratios for Adults. When chest compressions are done at 100-120 per minute, the idea is to be exact or in-between 100 and 120. Too fast or too slow does not always provide adequate perfusion. Hence, the most important component of CPR is chest compressions COMPRESSIONS When performing chest compressions, proper hand placement is very important. To locate the correct hand position place two fingers at the sternum (the spot where the lower ribs meet) then put the heel of your other hand next to your fingers (Figure 1). Place one hand on top of the other and interlace the fingers (Figure 2). Lock you The depth of compression should be one third of the chest depth of the person. The rate is either: 30 compressions to two breaths (mouth-to-mouth as per step 7) aiming for 100 compressions and no more than eight breaths per minute, OR; If unwilling to do mouth-to-mouth, perform continuous compressions at a rate of approximately 100 per minute

High-quality chest compressions are a critical component in the cardiac arrest chain of survival [].Despite its importance, the sustained delivery of high-quality cardiopulmonary resuscitation (CPR) is infrequently achieved in clinical practice [2, 3].Mechanical chest compression devices deliver high-quality external chest compressions, in place of a human rescuer The recommended chest compression point can be ineffective to generate enough outflow because the Area of Maximum Compression is not on the Left Ventricle but either on the Aortic Valve or the Ascending tract of the Aorta. Emergency providers can adjust the compression point based on EtCO2 values. If, despite technically correct chest. Chest compressions move blood with oxygen to the heart and the brain to save the brain and prepare the heart to start up its own rhythm when a shock is delivered with a defibrillator, said Jim. Chest Compression-Only CPR by Lay Rescuers andSurvivalFromOut-of-HospitalCardiacArrest Bentley J. Bobrow, MD Daniel W. Spaite, MD Robert A. Berg, MD Uwe Stolz, PhD, MPH Arthur B. Sanders, MD Karl B. Kern, MD Tyler F. Vadeboncoeur, MD Lani L. Clark, BS John V. Gallagher, MD J. Stephan Stapczynski, MD Frank LoVecchio, DO Terry J. Mullins, MBA. The chest compression performance data were collected using the SimPad Skill Reporter. For each technique, the total number of chest compressions (compression/min), CD (mm), and the percentages of correct CD, adequate compression rate, compression with correct finger position, and complete recoil of the chest were recorded

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How to Perform CPR on Prone Position Patients Ausme

Compression rate. 100-120/min; Compression depth. At least 1/3 AP diameter of chest; About 2 inches (5 cm) Hand placement. 1 or 2 hands can be used (optional for small children) On the lower half of the breastbone (sternum) Chest recoil. Make sure not to lean on the chest of the victim - Allow a full recoil after each chest compression. Compression: Chest compressions help in improving the blood circulation to the heart, brain, and other organs. Position the child on their back on a firm and hard surface. Remove any clothing that is obstructing the chest. Get down on your knees next to the child's neck and shoulders

Identifying the optimal hand placement site for chest

Overview. Disposable Suction Cups 3-Pack for the LUCAS ® 2 & 3 Chest Compression System. Easily changed after each use. Choose single 3-pack, or save more with the 12-pack (four 3-packs). Alternate Part Number (s): 11576-000046, 11576-000047 The construction of the elastic promotes ventilation and helps reduce heat retention. The Elasto-Fit abdominal binder is commonly used for breast compression, rib injuries, post surgical support, postpartum, and for cosmetic surgery. Size Guide. For correct size measure around the chest. Small - Less than 40. Large - Less than 60. 8 inches wide The rescuer's hands are placed in contact with the recipient's chest at the proper location. A compression monitor 10 is attached to one of the rescuer's wrists at the point which is proximate to the point at which rescuer 46 is exerting force on the recipient's chest during CPR Compressions should occur at a rate of 100 to 120 compressions per minute, at one third the depth of the chest. For an infant, use the 2-finger chest compression technique. For a child, use one or two hands, whatever is needed to provide adequate compression depth. Use a compression-to-ventilation ratio of 30 compressions to 2 breaths

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Background Point-of-care ultrasound (POCUS) has quickly become a core adjunct used in the emergency department (ED) during cardiopulmonary resuscitation (CPR). Specifically, it is now frequently used to evaluate for reversible causes of cardiac arrest (i.e. cardiac tamponade, pulmonary embolism), guide resuscitation, and prognosticate on patient outcomes based on presenting cardiac activity [1. Multiple logistic regression assessed odds ratio for survival by compression rate categories (<80, 80-99, 100-119, 120-139, ≥140), both unadjusted and adjusted for sex, age, witnessed status, attempted bystander cardiopulmonary resuscitation, location of arrest, chest compression fraction and depth, first rhythm, and study site. Compression Background During cardiopulmonary resuscitation (CPR), there is a high incidence of capnograms distorted by chest compression artifact. This phenomenon adversely affects the reliability of automated ventilation detection based on the analysis of the capnography waveform. This study explored the feasibility of several filtering techniques for suppressing the artifact to improve the accuracy of. Chest compression fraction. Chest compression fraction is calculated as the percentage of the time spent performing CPR during a cardiac arrest. Interruptions, whether intended or not, should be kept to a minimum so that the chest compression fraction (ie the time spent attempting to resuscitate the patient) does not fall below 60%