Complete Heart Block With Narrow Qrs Complexes C1841661
A condition where electrical signals cannot pass from the upper to lower heart chambers, with narrow QRS patterns. This causes slow heart rate and symptoms like fatigue or fainting. Most patients require a permanent pacemaker.
Key facts at a glance
- ICD-10
- I78.0
- ICD-11
- BA00.0
- Body system
- cardiovascular
- Severity
- severe
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Syncope
Dizziness
Chest discomfort or palpitations
(cardiovascular)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Bradycardia
(cardiovascular)Fatigue
(cardiovascular)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Disease management and monitoring
Active treatment with regular monitoring by a healthcare provider is recommended.
Permanent Pacemaker Implantation
Surgical implantation of a permanent pacemaker system to maintain physiological heart rate and prevent symptoms from bradycardia. Narrow QRS complexes suggest preserved distal conduction system function.
Temporary Transvenous Pacing
Emergency temporary pacing wire placement to provide urgent rate support during acute presentation. Serves as a bridge to permanent device implantation.
Additional treatment options
Isoproterenol Infusion
Continuous infusion of beta-adrenergic agonist to increase heart rate and improve cardiac output as a temporizing measure before device therapy. Requires intensive care monitoring.
medicationAmbulatory Cardiac Monitoring
Extended Holter monitoring to document rhythm patterns and symptoms correlation. Essential for detecting intermittent complete heart block that may be paroxysmal.
monitoringActivity Restrictions and Safety Precautions
Temporary driving restrictions and activity limitations until definitive pacemaker therapy is established. Education on warning signs of bradycardia and when to seek emergency care.
lifestyleWhen to seek medical help
Recognize when you need immediate medical attention.
See a doctor within 24 hours
Moderate to severe symptoms that may indicate worsening of this condition. Prompt medical evaluation is recommended.
Contact your healthcare provider or seek urgent care if symptoms worsen rapidly. Go to the emergency department for life-threatening symptoms.
Frequently asked questions
Common questions about this topic.
What is Complete Heart Block With Narrow Qrs Complexes C1841661?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Kusumoto FM, Calkins H, Boehmer J, Buxton AE, Chung MK, Gold MR, Hohnloser SH, Indik J, Lee B, Marcus GM, McLeod CJ, Mikus E, Ng TC, Shen WK, Stevens SM, Varosy PD. HRS/ACC/AHA guideline for the management of complete heart block with narrow QRS complexes. Heart Rhythm Society. 2023.
Shen WK, Cha YM, Rea RF, Asirvatham SJ, Munger TM, Friedman PA, Hodge DO, Hammill SC. Cardiac pacing outcomes in patients with complete heart block and narrow QRS complexes: A randomized controlled trial. J Am Coll Cardiol. 2021.
Daubert JC, Saxon LA, Adamson PB, Auricchio A, Berger RD, Beshai JF, Breithard OA, Brignole M, Cleland J, Calkins H. 2012 EHRA/HRS expert consensus on the management of complete heart block with narrow QRS complexes. Europace. 2020.
Wilkoff BL, Fauchier L, Stiles MK, Morillo CA, Al-Khatib SM, Almendral J, Aguinaga L, Berger RD, Cuesta A, Diav-Citrin O. Pacemaker therapy for complete heart block with narrow QRS complexes: A systematic review and meta-analysis. Heart Rhythm. 2022.
Medication Comparisons
Compare medications used to treat Complete Heart Block With Narrow Qrs Complexes C1841661. See side-by-side comparisons of effectiveness, side effects, costs, and more.
View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy