Study guides, Class notes & Summaries

Accelerated Junctional - Answer Rate: 60-100 Rhythm: Regular Pwave: before/after/absent - inverted PR: unknown QRS: Normal *** Fast junctional escape Asystole - Answer absence of contractions of the heart-Flat Line Atrial fibrillation - Answer rapid, random, ineffective contractions of the atrium Atrial Flutter - Answer Rate:Atrial 250-350 Ventricular: 100 -175 P: Irregular or absent, often "saw tooth" QRS: Normal Conduction: AV Block (2:1 > 3:1, 4:1) Rhythm: Regular (u...

QUESTIONS AND ANSWERS

List 3 characteristics of a multi-channel or 3 channel EKG machine Speed,8× 11 paper,simultaneously records several leads at once What does ECG stand for?what dose it represent? Electrocardiography and galvanometer What is the phase of contraction also know as ? Depolarization What is the phase of relaxation also know as? Repolarization What is the name of the body's natural pacemaker? Sa node What is the purpose of pointing the power cord of the ECG machine away from the patien...

What cells cause the heart to contract? Contractile cells What creates and conducts impulses to regulate the cardiac cycle? Conduction system cells What controls involuntary bodily functions and has two subdivisions? Autonomic nervous system Sympathetic nervous system Fight or flight. Hits the accelerator. How does depolarization occur? Change in the cardiac cell's electrical charge from negative to positive. Accomplished by sodium and potassium ions changing place. Causes a wave o...

how many large squares in an 6 second EKG 30 squares normal PR interval 0.12-2.0 sec large box sec 0.20 small box sec 0.04 qrs interval sec 0.06-0.12 QRS greater than _____________ is What type of block greater than 0.12 is a branch bundle block finding rate number of R waves in 6 second multiplied by 10 big box rate method 300/number of big boxes between RR Electrical conduction in Heart SA>AV> Bundle of HIS> Perjunke Fibers first degree heart block KC rhy...

What is the intervention for Sinus Tach? Identify the cause and treat (Fever, dehydration, anxiety, etc.) What is the intervention for sinus bradycardia? Stable, chronic....none. Assess your patient first...if they are unstable atropine. What is the intervention for sinus with PACs? None What is the intervention for sinus with PVCs? None...assess electrolytes, oxygenation. What is the intervention for sinus exit block/arrest? Notify the PCP and record the length of the pause. TCP if...

How is auscultation of the lungs achieved? side to side & top to bottom Lung Sounds: Rub loud, dry, coarse Lung Sounds: Rhonci indicated consolidation, continuous balloon rubbing, snoring sound, low pitched rumbling Lung Sounds:Wheezing *** continuous high-pitched musical sounds Lung Sounds: Coarse Crackle non-continuous popping, moist, low-pitched bubbling sounds, soda bottle popping :Lung Sounds: Fine Crackles *** short (non-continuous), high-pitched crackling and popping sounds...

Where does a junctional rhythm originate AV Node Why do we call it AV Junction and not AV Node? AV junction is the space between the atrial and ventricle, while the AV node is the back up pacemaker Where will the P waves be located with a junctional rhythm? Immediately before, after, or hidden within QRS What is the rate of a junctional rhythm 40 to 60 bpm What is an accelerated junctional rhythm? Rate: 60-100 bpm Rhythm: regular P-waves: inverted or missing for each beat PRI: var...

Pulse ox wavelengths 660, 940 Methemoglobin treatment Methylene blue, vitamin C Carboxyhemoglobin treatment 100% FiO2 Cyanide toxicity treatment Hydroxycobalamine Most sensitive EKG lead for atrial dysrhythmia Lead II Two benefits of 5 lead EKG V1 enhances atrial dysrhythmia detection V4/5 enhances ischemia detection Change in BP by height 15 cm height = 10 mmHg BP Or 7.5 mmHg per 10 cm ETCO2 goal during CPR >10 Sudden increase indicates ROSC R to L shunt has more o...

Changes at delivery Pressure: Increased SVR, decreased PVR Oxygenation: Pulmonary arterioles dilate, alveoli expansion Shunts close Cardiac output calculation CO=HRxSV Mean arterial pressure calculation (2xDBP)+SBP/3 Stroke volume Contractility, preload, afterload Preload Measures pressure over volume in the ventricles prior to contraction Afterload Resistance of blood flow leaving the ventricle Causes of decreased preload Hypovolemia Vasodilation Hyperthermia Sepsis Ca...

The human adult liver DOES NOT: A.) store glycogen B.) produce erythrocytes C.) convert ammonia to urea D.) produce blood coagulation proteins B.) produce erythrocytes A lobule of the liver contains a centrally located: A.) vein with radiating hepatocytes and sinusoids B.) arteriole with radiating capillaries and Kupffer cells C.) hepatic sinus with radiating sinusoids D.) hepatic duct with radiating Kupffer cells and cords of hepatic cells A.) vein with radiating hepatocytes and sinu...

crossed aphasia aphasia from right hemisphere damage what determines the deficits of function in PWA location and extent of damage ischemic stroke "block" from blood clot hemorrhagic stroke "rupture" of blood vessel what is the biggest risk factor for having a stroke? having already had one demographic risk factors for stroke 65+ age, female, black and asian american social risk factors for stroke unemployment, poverty, reduced access to healthcare health causes of strok...