• 2017
  • WEDNESDAY, Aug. 9, 2017 - After steep price hikes, use of two common heart medications declined significantly in U.S. hospitals, a new study shows. (drugs.com)
  • Sinoatrial
  • Blockages are therefore classified based on where the blockage occurs - namely the SA node ("Sinoatrial block"), AV node ("AV block" or AVB), and at or below the bundle of His ("Intra-Hisian" or "Infra-Hisian block" respectively). (wikipedia.org)
  • The sinoatrial node may not function properly either as a result of slow generation of impulses or of blocking of the propagation of impulses. (medhelp.org)
  • In a first degree sinoatrial block, there is a lag between the time that the SA node fires and actual depolarization of the atria. (wikipedia.org)
  • A third degree sinoatrial block looks very similar to a sinus arrest. (wikipedia.org)
  • Sinoatrial blocks are typically well-tolerated. (wikipedia.org)
  • Medical Dictionary: Sinoatrial heart block Bledsoe, Porter, Cherry (2009). (wikipedia.org)
  • ventricles
  • If the signal is blocked before it reaches the ventricles, they won't contract and pump blood to the lungs and the rest of the body. (daviddarling.info)
  • There are lesser degrees of block, where some activations get through and others do not (shown by the presence of any isolated P waves) and in its mildest form there is simply a slowing down of transmission from atria to ventricles (shown by a prolonged P-R interval). (encyclopedia.com)
  • The ventricles compensate by contracting on their own, but at a much slower rate than is safe for the heart to maintain full function. (memorialhospitaljax.com)
  • bundle
  • Metoprolol Succinate ER - Can low dose metoprolol actually help control Left bundle branch block? (drugs.com)
  • Is there a list of drugs that are not safe if you have left bundle branch block? (drugs.com)
  • Physican also called it left bundle block). (medhelp.org)
  • Sometimes a bundle branch block is present transiently, at a particular heart rate. (medhelp.org)
  • A new bundle branch block always concerns a doctor because it raises the possibility of a heart attack. (medhelp.org)
  • Therefore, as you can see, a bundle branch block can signify something benign or something serious. (medhelp.org)
  • It is also possible for just one of the main branches of the Bundle of His to be blocked. (encyclopedia.com)
  • Echocardiogram
  • A stress test may also use an echocardiogram (ultrasonic imaging of the heart) or a nuclear stress test (in which a radioisotope is injected into the bloodstream). (wikipedia.org)
  • After the target heart rate is achieved, 'stress' echocardiogram images are obtained. (wikipedia.org)
  • pumps
  • The relative timing of this sequence, as well as the sequence itself, are important determinants of the effectiveness with which the heart pumps the blood. (encyclopedia.com)
  • Breathing continues normally throughout the attack, and, upon recovery, the patient becomes flushed as the heart rapidly pumps the oxygenated blood from the pulmonary beds into the systemic circulation, which has become dilated due to hypoxia. (wikipedia.org)
  • Wenckebach
  • The term "Wenckebach block" is also used for some heart blocks, and can refer to a second degree type I block in either the SA node or the AV node, however the ECG features of the two are quite distinctly different. (wikipedia.org)
  • Type I second-degree heart block (also known as Mobitz Type I second-degree AV block or Wenckebach AV block). (medhelp.org)
  • Second degree SA blocks are broken down into two subcategories just like AV blocks are: The first is a second degree type I, or Wenckebach block. (wikipedia.org)
  • Note that this is quite different from the Wenckebach AV block, in which the PR interval gets progressively longer, before the dropped QRS segment. (wikipedia.org)
  • pacemakers
  • Some people with type II need medical devices called pacemakers to maintain their heart rates. (daviddarling.info)
  • As a result, other pacemakers in the heart become responsible for impulse generation, and these have intrinsically slower rates. (medhelp.org)
  • The advantages of an algorithm that reduces unnecessary ventricular pacing, coupled with functions providing a detailed history of the course of heart block should offer a wealth of useful knowledge to physicians implanting pacemakers. (thefreedictionary.com)
  • cause
  • Can the metoprolol cause a first degree AV heart block? (drugs.com)
  • If possible, avoid medications that can cause heart block. (memorialhospitaljax.com)
  • Along with labetalol, celiprolol and carvedilol, it is one of four beta blockers to cause dilation of blood vessels in addition to effects on the heart. (wikipedia.org)
  • Clearing more than three tiles in a single move scores a Combo, while Chains are scored when falling blocks from one clear cause another clear to occur. (wikipedia.org)
  • occur
  • Sometimes the communication between the two does not occur properly or is lost entirely, this is known as heart block. (cardiacmatters.co.uk)
  • Because it is so difficult to treat or repair the damaged heart, a high-priority strategy is to try to prevent the inflammatory process before irreversible scarring can occur. (clinicaltrials.gov)
  • tissue
  • In a laboratory experiment conducted on biopsied heart tissue, nebivolol proved to be the most β1-selective of the β-blockers tested, being approximately 3.5 times more β1-selective than bisoprolol. (wikipedia.org)