Persistent Hiccups After CABG Surgery – Evidence‑Based Recommendations

Diagnostic Evaluation

In post‑CABG patients, assessment for mechanical complications such as ventricular septal rupture or mitral regurgitation due to papillary‑muscle dysfunction is essential because these conditions are associated with high mortality. 1
Evaluation for pericardial effusion or cardiac tamponade should be performed, as fluid accumulation can irritate the phrenic nerve during cardiac manipulation and contribute to persistent hiccups. 2

A multimodal analgesic regimen that includes acetaminophen (up to 4 g per day) is recommended; adequate pain control reduces hiccup frequency and improves respiratory mechanics. 1
Positioning the patient with the head of the bed elevated to approximately 30° (beach‑chair position) helps decrease gastric distention and facilitates diaphragmatic excursion, thereby mitigating hiccups. 1
NSAIDs and selective COX‑2 inhibitors should be avoided in post‑CABG patients because their use is linked to increased cardiovascular events and higher mortality. 1
Opioid use should be minimized, as opioids can cause respiratory depression and may exacerbate hiccups through secondary gastric distention. 1

Continuous monitoring of respiratory mechanics is advised; persistent hiccups can impair cough effectiveness, raise the risk of atelectasis, and potentially delay extubation. 1