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  2. Premature ventricular contraction - Wikipedia

    en.wikipedia.org/wiki/Premature_ventricular...

    A premature ventricular contraction (PVC) is a common event where the heartbeat is initiated by Purkinje fibers in the ventricles rather than by the sinoatrial node. PVCs may cause no symptoms or may be perceived as a "skipped beat" or felt as palpitations in the chest. PVCs do not usually pose any danger. [1]

  3. Electrocardiography - Wikipedia

    en.wikipedia.org/wiki/Electrocardiography

    The "large" box is represented by a heavier line weight than the small boxes. Measuring time and voltage with ECG graph paper The standard printing speed in the United States is 25 mm per sec (5 big boxes per second), but in other countries it can be 50 mm per sec. Faster speeds such as 100 and 200 mm per sec are used during electrophysiology ...

  4. Multifocal technique - Wikipedia

    en.wikipedia.org/wiki/Multifocal_technique

    Multifocal techniques are used in electroretinogram and visual evoked potential recordings to separate the responses originating from the stimulation of different ...

  5. Multifocal atrial tachycardia - Wikipedia

    en.wikipedia.org/wiki/Multifocal_atrial_tachycardia

    Multifocal atrial tachycardia is characterized by an electrocardiogram (ECG) strip with three or more discrete P wave morphologies in the same lead, not including that originating from the sinoatrial node, plus tachycardia, which is a heart rate exceeding 100 beats per minute (although some suggest using a threshold of 90 beats per minute ...

  6. Intermodal container - Wikipedia

    en.wikipedia.org/wiki/Intermodal_container

    These large boxes have 60% more capacity than 40' containers, enabling shippers to consolidate more cargo into fewer containers. [ 97 ] [ 98 ] [ 99 ] In 2007, APL introduced the first 53-foot ocean-capable containers designed to withstand voyages on its South China-to-Los Angeles service. [ 94 ]

  7. Bulk box - Wikipedia

    en.wikipedia.org/wiki/Bulk_box

    A bulk box, also known as a bulk bin, skid box, pallet box, bin box, gaylord, or octabin, is a pallet-size box used for storage and shipping of bulk or packaged goods. [1] Bulk boxes can be designed to hold many different types of items such as plastic pellets, watermelons, electronic components, and even liquids; some bulk boxes are stackable.

  8. Vergence-accommodation conflict - Wikipedia

    en.wikipedia.org/wiki/Vergence-accommodation...

    The topic of multifocal displays has been generously researched for at least several decades, [25] [26] nevertheless, there is only a limited offering of commercially available multifocal near-eye displays. Light field displays are one of the best ways to solve the vergence-accommodation conflict. [22] They share features with integral imaging ...

  9. Pulmonary circulation - Wikipedia

    en.wikipedia.org/wiki/Pulmonary_circulation

    The pulmonary circulation is a division of the circulatory system in all vertebrates. The circuit begins with deoxygenated blood returned from the body to the right atrium of the heart where it is pumped out from the right ventricle to the lungs.