A 60-Year-Old Male Patient Admitted With Chest Pain 777654
A 60 Year Old Male Patient Is Admitted With Chest Pain To the Telemetr
A 60-year-old male patient is admitted with chest pain to the telemetry unit. While having a bowel movement on the bedside commode, the patient becomes short of breath and diaphoretic. The ECG waveform shows bradycardia. What other assessment findings should you anticipate? Why does this patient probably have bradycardia? Does this dysrhythmia need treatment? Why or why not? What intervention would you implement first? What is the drug treatment and dosage of choice for symptomatic bradycardia? How does this drug increase heart rate?
Paper For Above instruction
In clinical practice, patients presenting with chest pain require comprehensive assessment to determine the underlying cause and to guide appropriate intervention. The scenario of a 60-year-old male with new-onset bradycardia amid episodes of breathlessness and diaphoresis during a routine activity highlights the critical need for vigilant monitoring and swift assessment. Additional findings to anticipate in such a patient include signs of hypotension, pale or cyanotic skin, altered mental status, and decreased peripheral pulses, indicative of compromised cardiac output. These assessments help determine the severity of the condition and guide urgency of intervention.
The presence of bradycardia in this patient can likely be attributed to myocardial ischemia affecting the conduction system, increased vagal tone, or the influence of medications such as beta-blockers or calcium channel blockers. Myocardial ischemia, especially involving the sinoatrial (SA) node or atrioventricular (AV) node, can impair electrical conduction, resulting in a slow heart rate. Moreover, the act of straining during a bowel movement can increase vagal stimulation, further decreasing heart rate. Intentionally or unintentionally, enhanced vagal tone inhibits the sinoatrial node’s fire, leading to bradycardia.
Whether this dysrhythmia requires treatment depends on the patient's hemodynamic stability. In cases where bradycardia leads to symptoms such as hypotension, altered mental status, chest pain, or signs of shock, immediate intervention is necessary. Conversely, asymptomatic bradycardia with stable vital signs may be observed and managed conservatively. In this scenario, given the patient’s symptomatic presentation—shortness of breath, diaphoresis, and potential hypotension—treatment is indicated to restore adequate heart rate and perfusion.
The first intervention should be to assess the patient’s airway, breathing, and circulation (ABCs), ensuring airway patency and supporting oxygenation as needed. Simultaneously, obtaining continuous cardiac monitoring is essential. If the patient shows signs of instability, pharmacologic intervention with intravenous atropine is the first-line treatment. Atropine works by antagonizing the effects of the parasympathetic nervous system on the heart, thereby increasing the heart rate. The typical initial dose of atropine is 0.5 mg administered intravenously every 3 to 5 minutes as needed, not exceeding a total dose of 3 mg.
The mechanism by which atropine increases heart rate involves blocking the vagus nerve’s influence on the sinus node. It inhibits parasympathetic stimulation, which otherwise slows sinoatrial node firing and delays conduction through the AV node. By reducing parasympathetic tone, atropine allows the sinoatrial node to fire more rapidly, thus increasing the heart rate and improving cardiac output.
In summary, this case underscores the importance of rapid assessment and intervention in patients with bradycardia, especially in the context of acute coronary syndromes. Proper understanding of the underlying mechanisms and treatment options, such as atropine administration, is crucial for improving patient outcomes and preventing progression to more severe arrhythmias or cardiac arrest.
References
- Page, R. L., Joglar, J. A., Caldwell, M. A., Cummings, J., Hood, I., Lee, R., & Stevenson, W. (2015). Summary of ACLS Changes in the 2015 Guidelines: A Peer-Reviewed Summarization of the New 2015 AHA Guidelines for CPR and ECC. Journal of the American College of Cardiology, 66(22), 2432-2446.
- American Heart Association. (2020). 2020 American Heart Association Guidelines for CPR and ECC. Circulation, 142(Suppl 2), S366–S468.
- Chamberlain, M. J., & Mansfield, D. (2018). Cardiovascular Pharmacology. In Pharmacology for Nursing Care (9th ed., pp. 340-355). Elsevier.
- Gordon, A. S., & Kverket, D. (2017). Management of Bradyarrhythmias. Emergency Medicine Clinics of North America, 35(3), 576-595.
- Neblett, H. E., & Muir, A. P. (2016). Troubleshooting and management of bradyarrhythmias. Journal of Emergency Nursing, 42(6), 545-550.
- Valentino, M. A., & Ghobrial, M. (2019). Vagal maneuvers and vagal stimulation. Journal of Cardiovascular Pharmacology and Therapeutics, 24(3), 258–264.
- Berger, S., & Freetly, A. (2019). Electrocardiogram Interpretation in Acute Coronary Syndrome. Cardiology Clinics, 37(2), 171–183.
- Thompson, P., & Smith, J. (2021). Pharmacology of Antiarrhythmic Drugs. Journal of Cardiovascular Pharmacology and Therapeutics, 26(1), 3–16.
- Hoffman, J. M., & Scharf, S. M. (2020). Asphyxia and bradycardia in children: Pathophysiology and management. Pediatric Critical Care Medicine, 21(4), e256–e262.
- Hansen, P., & Burch, M. (2018). Cardiac emergencies: Arrhythmia management. Journal of Emergency Nursing, 44(4), 403–409.