Questions and CORRECT Answers
PVARP....after a _____ event, refractory for the ______ - CORRECT ANSWER -
ventricle, atrium
what is most likely the cause of the under detection of atrial flutter? - CORRECT
ANSWER - p waves falling into PVAB
Which two studies showed that RV pacing in patients could lead to more hospitalizations? -
CORRECT ANSWER - DAVID and MOST
when are the wedensky effects the greatest - CORRECT ANSWER - at narrow pulse
widths
First degree AV block with symptoms of ppm syndrome is what class of indication for pacing -
CORRECT ANSWER - Class IIa
Calculation of the wenkbach interval - CORRECT ANSWER - MTR-TARP
What did the ADEPT study show - CORRECT ANSWER - rate modulation was
ineffective in improving the QoL for patients with a brady indication
Lead perf percentages in ICD placements - CORRECT ANSWER - 0.6-5%
Class IA drugs that increase pacing thresholds (3) - CORRECT ANSWER - quinidine,
dysopyramid, procainamid
class IC drugs that increase pacing thresholds - CORRECT ANSWER - flecanide,
propaferone
,class 3 drugs that increase pacing thresholds (3) - CORRECT ANSWER - propaferone,
amio, sotalol
Osborn or J waves indicate what three things - CORRECT ANSWER - hypothermia,
hypercalcemia, brugada syndrome
Sign of WPW syndrome within the QRS - CORRECT ANSWER - delta wave in the PR
interval
lead type with the highest rate of perforation - CORRECT ANSWER - atrial active fix
leads
MADIT study - CORRECT ANSWER - icd vs drug therapy. icd reduced mortality by
54%
MADITII study - CORRECT ANSWER - icd VS. no ICD. no need for prior arrythmias.
No EP study needed. ICD decreased mortality by 31%
SCDHEFT study - CORRECT ANSWER - ICD decreased mortality in both ICM (21%)
and NICM (27), amio had little to no effect on mortality
PMOP algorithm - CORRECT ANSWER - helps reduce reoccurring atrial tach episodes
from reoccurring shortly after previous episode has ended
rheobase is measured in _____ while chronaxie is measured in _____ - CORRECT
ANSWER - voltage, ms
charge is measured in _______. the formula is ______ - CORRECT ANSWER -
microcoloumbs, I(current) x T (pulse duration)
,constant current = ____ load and ____ impedance - CORRECT ANSWER - small, low
constant voltage= ____ load and ____ impedence - CORRECT ANSWER - large, high
Which is better polyurethane 80A or 55D? - CORRECT ANSWER - 55D
what programming change can you make to help combat PPM syndrome - CORRECT
ANSWER - lower the rate to decrease the RV pacing
Clinical manifestations of brugada (2) - CORRECT ANSWER - ST elevation in V1-V3,
RbBB
Drugs that increase DFT (4) - CORRECT ANSWER - lidocaine, quinidine, flecanide,
dyapherihydation
underlying reasons for Torsades (4) - CORRECT ANSWER - hypomagnesia,
hypokalemia, hypoxia, acidosis
most common inherited long QT syndrome - CORRECT ANSWER - Romano ward
upper limit vulnerability - CORRECT ANSWER - weakest shock strength where VF not
induced
capacitance is measured in ____ and is the _______ - CORRECT ANSWER - farads,
charge/voltage, measurement of amount of electrical charge stored for given electrical current
smaller capacitor = _______ voltage required to deliver an equal charge to the tissue -
CORRECT ANSWER - greater
, primary endpoint of companion study - CORRECT ANSWER - risk reduction of CRTD
was 36% mortality in ICD group
main type of acute infection - CORRECT ANSWER - staph aureous
main type of chronic infection - CORRECT ANSWER - staph epidermis
microvolt t wave alternates - CORRECT ANSWER - fluctuations in the t wave
morphology liked to arrhythmia, you cannot detect on the surface because of such small changes
what type of conductor provides the low resistance needed - CORRECT ANSWER - DFT
what type of capacitor provides a high energy density and does not require a reform - CORRECT
ANSWER - wet tantalum hybrid
voltage of lithium iodine battery - CORRECT ANSWER - 2.8V
smaller surface area = ______ current density = ______ threshold and ______ impedence -
CORRECT ANSWER - higher, lower, higher
hyperkalemia. what type of QT, what happens to threshold, which chamber more sensitive -
CORRECT ANSWER - short QT, peaked T wave, threshold usually starts to decrease than
increase, atrium more sensitive
Hypokalemia. what type of QT, changes on EKG (3), causes what - CORRECT
ANSWER - long QT, ST depression, flattening T wave, U wave, can cause torsades
normal potassium - CORRECT ANSWER - 3.7-5.2mEq/L,