Outline the differences between the excitation-contraction coupling mechanism between skeletal and cardiac muscles. Excitation-contraction coupling is the combination of the electrical and mechanical events in the muscle fibres and is related by the release of calcium from the sarcoplasmic reticulum. (Silverthorn‚ 2007) In the skeletal muscle‚ action potential in the nerves is generated when the somatic motor neurons releases the neurotransmitter acetylcholine (ACh)‚ at the neuromuscular junction
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1. What do those numbers (130/87) mean? What do they relate to in the cardiac cycle? The numbers 130/87 is the blood pressure of the patient. The top number 130‚ is the reading that is received when the heart is in contraction and blood is pushed out of the heart into the rest of the body (this is called systole). The bottom number 87‚ is the reading when the heart is at it relaxed state and is being refilled with blood (this is called diastole.) 2. This deposition of platelets and fibrin can
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errors continue to claim many innocent lives. The purpose of the research was to identified the causes of medication errors during cardiopulmonary arrest. According by the article by Flannery & Parli (2016)‚ medication errors in the intensive care unit (ICU) range from 8.1 to 2344 per 1000 patient-days. Unfortunately‚ drug errors that occurred during Cardiac resuscitation are less identified and reported. The main reason for that is because the patients involved are in their most vulnerable state. In
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ACLS PRE-TEST ANNOTATED ANSWER KEY June‚ 2011 Question 1: Please identify the rhythm by selecting the best single answer Agonal rhythm/asystole Atrial fibrillation Atrial flutter Coarse ventricular fibrillation Fine ventricular fibrillation Monomorphic ventricular tachycardia Normal sinus rhythm Polymorphic ventricular tachycardia X Pulseless electrical activity Reentry supraventricular tachycardia Second-degree AC block (Mobitz I Wenckebach) Second-degree AV block (Mobitz II block) Sinus bradycardia
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CPR ALTERNATE ASSESSMENT Can you save a life? In an emergency‚ when every second is critical‚ would you know what to do? According to recent statistics sudden cardiac arrest is rapidly becoming the leading cause of death in America. Once the heart ceases to function‚ a healthy human brain may survive without oxygen for up to 4 minutes without suffering any permanent damage. Unfortunately‚ a typical EMS response may take 6‚ 8 or even 10 minutes. Performing CPR dramatically increases the
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* Normally‚ the cavity between the pericardial layers contains 10-30mL of serous fluid * A pericardial effusion occurs if additional blood or fluid collects in this space. If the amount of fluid continues to increased and cardiac chamber filling is impeded‚ cardiac tamponade results * VAGUS – major PNS innervation of the heart * CALCIUM – is the main cation affecting electrical stimulation of the heart * THRESHHOLD – is the stimulus that changes the resting membrane * COLD –
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breaths). If the victim has a pulse but still is not breathing‚ continue rescue breathing and checking the pulse every minute. If the victim’s pulse stops‚ begin CPR. CPR is an emergency medical procedure for a victim of cardiac arrest or‚ in some circumstances‚ respiratory arrest. Find the lowest tip of the breastbone; place your other hand on top of the first hand. Use your shoulders and upper body‚ push down on the chest (a compression) 30 times‚ before giving two breaths. Continuing this process
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MYOCARDITIS DEFINITION The definition of myocarditis varies‚ but the central feature is an infection of the heart‚ with an inflammatory infiltrate‚ and damage to the heart muscle‚ without the blockage of coronary arteries that define a heart attack (myocardial infarction) or other common non-infectious causes. Myocarditis may or may not include death (necrosis) of heart tissue. When the heart is involved in an inflammatory process‚ often caused by an infectious agent‚ myocarditis is said
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What Broke My Father’s Heart by Katy Butler‚ published June 14‚ 2010 in the New York Times One October afternoon three years ago while I was visiting my parents‚ my mother made a request I dreaded and longed to fulfill. She had just poured me a cup of Earl Grey from her Japanese iron teapot‚ shaped like a little pumpkin; outside‚ two cardinals splashed in the birdbath in the weak Connecticut sunlight. Her white hair was gathered at the nape of her neck‚ and her voice was low. “Please help me get
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| |Does Milrinone Prevent Low Cardiac Output Syndrome in the Paediatric Population after Congenital Heart surgery? | |Nursing 730 (A&B) | | | |Paediatric Cardiac Nursing
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