How to manage intradialytic chest pain in a patient undergoing dialysis?

Management of Intradialytic Chest Pain

For patients experiencing acute unremitting chest pain during hemodialysis, immediate transfer by EMS to an acute care setting is recommended. 1, 2, 1, 3

Initial Assessment and Management

• Immediately perform a 12-lead ECG to evaluate for ischemic changes, as myocardial ischemia is the most frequent serious cause of chest pain during dialysis 1, 2, 1
• While arranging transfer, consider the following immediate interventions:
  • Reduce or temporarily stop ultrafiltration to prevent further blood pressure drop 4
  • Place the patient in Trendelenburg position to improve venous return if hypotension is present 4
  • Administer supplemental oxygen to improve tissue oxygenation 4
  • For suspected acute coronary syndrome with no contraindications, consider sublingual nitroglycerin, but use with caution in volume-depleted patients 5

Common Causes of Intradialytic Chest Pain

Cardiovascular Causes (Most Common)

• Myocardial ischemia/infarction - often induced by hypotension or tachyarrhythmias during dialysis in patients with CAD 1, 2, 1
• Pericarditis - common in dialysis patients and may present with chest pain 6, 7
• Arrhythmias - triggered by electrolyte shifts during dialysis 6

Dialysis-Related Causes

• Hypotension - due to rapid ultrafiltration 4
• Hemolysis - can cause chest discomfort during dialysis 1, 2
• First-use syndrome - hypersensitivity reactions to dialysis membranes causing chest pain, dyspnea, and hypotension 8

Other Causes

• Pulmonary embolism - particularly with inadequate anticoagulation 1, 6
• Aortic dissection - may present atypically in dialysis patients, sometimes without classic chest pain 9
• Gastroesophageal reflux 1, 2
• Subclavian steal syndrome 1, 2
• Musculoskeletal disorders 1, 2, 10
• Vascular access complications - including vessel perforation by catheter 1, 2

Prevention Strategies

• Perform regular assessment of dry weight to prevent intradialytic hypotension 6, 4
• Consider sodium profiling (starting with higher sodium concentration and gradually decreasing it) to maintain vascular stability 4
• Use slower ultrafiltration rates in patients with cardiovascular instability 6, 4
• Ensure appropriate anticoagulation during dialysis to prevent pulmonary embolism 6
• Consider reducing dialysate temperature from 37°C to 34-35°C to increase peripheral vasoconstriction and cardiac output 4
• For patients with recurrent chest pain during dialysis:
  • Review and potentially adjust antihypertensive medications 4
  • Consider administering midodrine before dialysis to prevent hypotension 4
  • Limit fluid intake between dialysis sessions to reduce interdialytic weight gain 4

Important Caveats

• AMI in patients undergoing dialysis is less frequently associated with chest pain than in non-dialysis patients - be alert for warning signs like diaphoresis or dyspnea 1, 2
• Patients on dialysis have a high prevalence of cardiovascular disease, making them particularly vulnerable to cardiac events during dialysis 1, 2, 1
• When using nitroglycerin for suspected cardiac chest pain, be aware that it may cause severe hypotension, particularly in volume-depleted patients such as those on dialysis 5
• Pain during dialysis is often undertreated - consider appropriate pain management strategies based on the identified cause 10
• Cardiac testing for patients on dialysis with chest pain should be the same as for non-dialysis patients once they are stabilized 1, 2