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IBHRE CEPS Electrical Exam with
complete solutions 2024/
E = V x I x time - ANSWER-Formula for energy Ampere - ANSWER-measures electron flow rate or current in electrical conductor, measured in Coulombs/second Ampere-hour - ANSWER-Unit of batter capacity Amount of energy charge in a battery Capacitance - ANSWER-Relationship between charge stored and voltage applied E = 0.5 x Capacitance x Voltage ^2 - ANSWER-Stored energy equation Power - ANSWER-Rate at which energy is delivered or absorbed Tesla - ANSWER-Unit of magnetic flux density Magnetic field - ANSWER-generated when electric charge carriers move through space or within electrical conductor Slew Rate - ANSWER-change in voltage over time Deg F = 9/5 x deg. C + 32 - ANSWER-Temperature conversion: Celsius to Fehrenheit 0 deg K = - 273 deg C - ANSWER-What is 0 K in Celsius? P = Energy / time - ANSWER-Equation for power
Platinum - ANSWER-Signals are transmitted via ___ electrodes to recording system 0.5-30 Hz - ANSWER-High pass filter for EKG and intracardiacs 100 - 400 Hz - ANSWER-Low pass filter for EKG and intracardiacs Wheatstone Bridge - ANSWER-Resistor/transducer that detects pressure changes in cardiovascular system Anachrotic notch - ANSWER-Seen on aortic valve pressure waveform, when aortic valve opens Dichrotic notch - ANSWER-Seen on aortic valve pressure waveform, when aortic valve closes Capacitors - ANSWER-DC defibrillators store electrical energy from charge in
Hand to hand - ANSWER-In electrical injury, pathway of current that is most likely to be fatal is ___ Relative - ANSWER-During the ___ refractory period, a PVC can cause VT/VF Increases slope of Phase 4 - ANSWER-Sympathetic nerve stimulation has this effect on cardiac action potential to speed HR Potassium - ANSWER-What ion leaks out of the cardiac cell throughout systole? Calcium - ANSWER-Depolarization of sinus node is due to ___ Early Afterdepolarization - ANSWER-depolarization that occurs during early end Phase 2/early Phase 3, can lead to polymorphic VT or torsades Delayed Afterdepolarization - ANSWER-depolarization that occurs during late Phase 3/early Phase 4, can lead to RVOT VT Cocci - ANSWER-spherical bacteria Bacilli - ANSWER-Rod-shaped bacteria
5 hours without epi, 9 hours with epi - ANSWER-Bupivacaine's duration with and without epinephrine Internal Jugular Vein - ANSWER-Superior access site that is superficial and located near base of the neck Subclavian Vein - ANSWER-Superior access site that is superficial and located by the armpit/under collarbone Seldinger Technique - ANSWER-Most common method for accessing venous system
- Palpate femoral site to locate femoral artery at inguinal ligament
- Inject lidocaine to the area 1cm distal and 1cm medial to artery
- Insert access needle at 45 deg angle until steady blood flow seen
- Insert J tip wire (50 cm for venous, 150 cm for arterial) through Cook needle's lumen approximately 2/3 of an inch, remove needle
- Place sheath over wire, advance until wire just comes out proximal end
- Gently twist sheath into vessel, then remove wire and flush sheath - ANSWER- Seldinger Technique steps Airway (make sure it's open) Breathing (if not breathing, give 2 breaths) Circulation (2 breaths/30 compressions, only when no pulse) Defibrillation (only shock if shockable rhythm) - ANSWER-ABCD ACLS recommendations 100 compressions/minute - ANSWER-CPR desired compression rate Epinephrine - ANSWER-First-line drug used after an unsuccessful shock Magnesium - ANSWER-Secondary drug used after multiple unsuccessful shocks Tetanus, botulism - ANSWER-Examples of anaerobic bacteria TB, cholera, diptheria - ANSWER-Examples of aerobic bacteria Steam Heat - ANSWER-Most practical, efficient, and inexpensive method of disinfection and sterilization of objects that can withstand high temperatures
ETO gas sterilization - ANSWER-Effective but more expensive and timely method of sterilization 120 degree C for 20 minutes at 15psi - ANSWER-Conditions for effective autoclave 2 inches above elbow - ANSWER-When performing the surgical scrub, the arms should be scrubbed: Fenestration - ANSWER-Opening in a single use sterile femoral drape Alcohol-based hand rubs - ANSWER-Save time, reduce costs, and are more effective than traditional scrubbing (must first wash and dry hands and forearms) Self-gowning closed method - ANSWER-When gown sleeves are used to manage gloves Self-gowning open method - ANSWER-When the first glove is grasped by bare hand inside cuff Electric clipper - ANSWER-Lower infection rates and less skin damage seen with this type of clipper, recommending by CDC Chlorhexidine-Alcohol - ANSWER-best prep for CIED placement Silver - ANSWER-Wound dressings for CIED are recommended to have ___ and antiseptic Blood, semen, vaginal secreations, breast milk - ANSWER-Methods of HIV spread Same - ANSWER-For PPM placement, the IV should be placed on the ___ side as the PPM. Distal (peripheral) - ANSWER-Start with the most ___ site when choosing IV placement NAVL (nerve, artery, vein, ligament) - ANSWER-Acronym for remembering right groin anatomy 30 degrees opposite way - ANSWER-To access IJ: turn the head ___
9 V alkaline battery - ANSWER-size and material of temporary pacemaker battery 2.8 V lithium iodine battery - ANSWER-size and material of permanent pacemaker battery Distal electrode - ANSWER-In a bipolar lead, this electrode is active and negative Proximal (ring) electrode - ANSWER-In a bipolar lead, this electrode is indifferent and positive Oxygen - ANSWER-First medication given to all ACLS patients
