১.
Which limb is spared from lead placement in ECG?
সঠিক উত্তর: খ
খ) RL
উত্তর
সঠিক উত্তর: খ
খ) RL
ব্যাখ্যা
Explanation:
PrepBank · বিষয়ভিত্তিক প্রশ্ন
ECG
ECG
PrepBank · পাতা ১ / ১ · ১–১৯ / ২০
খ
২.
ECG localization of Lateral (LCX) STEMI
সঠিক উত্তর: খ
I, aVL
উত্তর
সঠিক উত্তর: খ
I, aVL
৩.
Pacemaker of heart
সঠিক উত্তর: ক
SA node
উত্তর
সঠিক উত্তর: ক
SA node
ব্যাখ্যা
কোন ব্যাখ্যা যোগ হয় নি।
৪.
A 65-year-old man presents with central crushing chest pain for the first time. He is transferred immediately to the closest cardiac unit to undergo a primary percutaneous coronary intervention. There is thrombosis of the left circumflex artery only. Angioplasty is carried out and a drug-eluding stent is inserted. What are the most likely changes to have occurred on ECG during admission?
সঠিক উত্তর: ঘ
ST elevation in leads V5-6
উত্তর
সঠিক উত্তর: ঘ
ST elevation in leads V5-6
৫.
Romano-Ward syndrome is
সঠিক উত্তর: ক
AD
উত্তর
সঠিক উত্তর: ক
AD
৬.
TDP is associated with
সঠিক উত্তর: ক
QRS complex
উত্তর
সঠিক উত্তর: ক
QRS complex
ব্যাখ্যা
QRS complexes with variable peaks that appear to twist around the isoelectric line characterize torsades de pointes (TDP).
• Predisposing risk factors for TDP include congenital channelopathies, severe bradycardia, drugs, and hypokalemia.
• Drug-induced TDP is of major concern because it can be life threatening; class IA/III antiarrhythmic agents, antipsychotics, antibiotics, and antihistamines are among the list of drugs that are noted to destabilize repolarization.
• Predisposing risk factors for TDP include congenital channelopathies, severe bradycardia, drugs, and hypokalemia.
• Drug-induced TDP is of major concern because it can be life threatening; class IA/III antiarrhythmic agents, antipsychotics, antibiotics, and antihistamines are among the list of drugs that are noted to destabilize repolarization.
৭.
Which part of the ECG corresponds to ventricular repolarization?
সঠিক উত্তর: গ
গ) The T wave
উত্তর
সঠিক উত্তর: গ
গ) The T wave
ব্যাখ্যা
The P wave is primarily produced by atrial depolarization, the QRS complex is dominated by ventricular depolarization, and the T wave by ventricular repolarization.
৮.
ECG changes in Hyperkalemia
সঠিক উত্তর: গ
wide QRS complex
উত্তর
সঠিক উত্তর: গ
wide QRS complex
৯.
Ventricular depolarisation in ECG is represented by
সঠিক উত্তর: খ
খ) QRS complex
উত্তর
সঠিক উত্তর: খ
খ) QRS complex
ব্যাখ্যা
Explanation:
Atrial depolarization: represented by the 'P' wave
• Atrial repolarization: none
• Ventricular depolarization: represented by the QRS' complex
• Ventricular repolarization: represented by the T' wave
১০.
Which of the following ECG interval corresponds to Ventricular action potential
সঠিক উত্তর: ঘ
QT
উত্তর
সঠিক উত্তর: ঘ
QT
১১.
Bifid broad P wave indicates hypertrophy of
সঠিক উত্তর: ক
Left atrium
উত্তর
সঠিক উত্তর: ক
Left atrium
ব্যাখ্যা
Explanation:
'P' wave may become tall peaked or broad and bifid (notched)
Tall, peaked: right atrial hypertrophy
Bifid broad: left atrial hypertrophy
১২.
Pathological causes of sinus bradycardia exclude
সঠিক উত্তর: ক
ক) Pregnancy
উত্তর
সঠিক উত্তর: ক
ক) Pregnancy
ব্যাখ্যা
Explanation:
Pathological causes of sinus bradycardia
• Hypothermia
• Hypothyroidism
• Myocardial infraction
• Raised intracranial pressure
• Cholestatic jaundice
• Drugs (beta-blockers, digoxin, antiarrhythmic drugs)
১৩.
Tall peaked P wave indicates hypertrophy of
সঠিক উত্তর: খ
খ) Right atrium
উত্তর
সঠিক উত্তর: খ
খ) Right atrium
ব্যাখ্যা
Explanation:
'P' wave may become tall peaked or broad and bifid (notched)
Tall, peaked: right atrial hypertrophy
Bifid broad: left atrial hypertrophy
১৪.
Which of the following is effective tool for diagnosis of Sick Sinus Syndrome?
সঠিক উত্তর: ঘ
Haulter monitoring
উত্তর
সঠিক উত্তর: ঘ
Haulter monitoring
১৫.
In the first 6 hours, the gold standard for Diagonosis of MI
সঠিক উত্তর: ঘ
ECG
উত্তর
সঠিক উত্তর: ঘ
ECG
১৬.
Which of the following contribute to the platue phase of the action potential of ventricular muscle fibers-?
সঠিক উত্তর: গ
গ) Ca+ influx
উত্তর
সঠিক উত্তর: গ
গ) Ca+ influx
ব্যাখ্যা
Plateau phase in action potential of Cardiac muscle due to-
-Slow voltage gated Ca+ channel
-Increase Ca++ influx
-Decrease K+ efflux
-coincides of ventricular systole
-results in prolonged refractory period
১৭.
Which is usually used to measure cardiac cycle length?
সঠিক উত্তর: ঘ
ঘ) RR interval
উত্তর
সঠিক উত্তর: ঘ
ঘ) RR interval
ব্যাখ্যা
Explanation:
The RR interval is the time between successive QRS complexes and is usually used to measure the cardiac cycle length (i.e. duration of ventricular cardiac cycle). RR interval is an indicator of ventricular rate.
The RR interval is the time between successive QRS complexes and is usually used to measure the cardiac cycle length (i.e. duration of ventricular cardiac cycle). RR interval is an indicator of ventricular rate.
১৮.
In Pulsus bigeminy there is abnormality in
সঠিক উত্তর: খ
Rythm
উত্তর
সঠিক উত্তর: খ
Rythm
ব্যাখ্যা
Explanation:
Pulses bigeminy: This is due to premature ectopic beats following every sinus beat. The pulse rhythm is not regular because every weak pulse is premature.
Pulses bigeminy: This is due to premature ectopic beats following every sinus beat. The pulse rhythm is not regular because every weak pulse is premature.
১৯.
Which one is called pacemaker of heart?
সঠিক উত্তর: ক
SA node
উত্তর
সঠিক উত্তর: ক
SA node
ব্যাখ্যা
Explanation:
The normal pacemaker tissue of the heart is the SA node because:
• SA node has the highest automaticity (discharge rate 70 -100 bpm.)
• Each natural heart beat begins in the SA node
• The SA node maintains normal cardiac rhythm