Cardiogenic shock — acromegaly-induced cardiomyopathy
Encounter flow
11/12 authoredCanonical 12-phase frame with authored status for this dossier.
Frame
Acromegaly cardiomyopathy with cardiogenic shock = end-stage manifestation of GH/IGF-1 excess (~30-40% of long-standing acromegaly develops cardiomyopathy; rare progression to shock); biventricular hypertrophy + diastolic + eventual systolic dysfunction + arrhythmia + accelerated CAD + valvular disease pattern; concurrent OSA in ~70%; preload-sensitive LV hypertrophy demands cautious volume management
Acromegaly cardiomyopathy + SCAI C+ shock confirmed
Patient inputs (18)
Locates adenoma (macro >10 mm vs micro <10 mm); informs surgical approach; visual field assessment if macroadenoma (chiasm compression)
IGF-1 reference ranges are age-adjusted; older patients have lower normals; transplant candidacy assessment
Cardiomyopathy reversibility correlates with disease duration; long-standing (>10 yr) acromegaly more likely to have irreversible fibrosis
OSA in ~70% of acromegaly patients (anatomical + central); exacerbates HF and shock physiology; CPAP/BiPAP reduces RV strain
Tachycardia + arrhythmia surveillance; AF and VT/VF more common in acromegaly cardiomyopathy
Cardiorenal screen; pegvisomant + somatostatin analog dose adjustment if AKI; renal injury common in shock
DM common in acromegaly (GH-induced insulin resistance); dose-adjustment for SGLT2i; informs prognosis
Rules out ischemic cardiomyopathy / accelerated CAD (acromegaly accelerates atherosclerosis); high values prompt cath
Markedly elevated in acromegaly cardiomyopathy with shock; trends response to therapy
Best screening test for acromegaly — reflects 24-h GH secretion; age-adjusted; elevated >ULN suggests acromegaly per Endocrine Society 2014 (PMID 25356808)
TSH, ACTH/cortisol, prolactin, LH/FSH — panhypopituitarism may co-exist; hyponatremia from SIADH or adrenal insufficiency requires immediate replacement before any pituitary intervention
Biventricular concentric hypertrophy + LV systolic dysfunction + valvular disease (especially AR + MR) is characteristic; rules out other CS etiologies
LV hypertrophy voltage criteria; arrhythmia surveillance; rules out ischemia
SCAI 2022 staging baseline; SBP <90 with end-organ hypoperfusion = SCAI C+
Hypoxemia from pulmonary edema + concurrent OSA; guides NIPPV and CPAP/BiPAP strategy
SCAI 2022 staging; CardShock prognostication (Harjola PMID 26333869); ≥4 = SCAI D-E pattern
Subepicardial fibrosis pattern is characteristic of acromegaly cardiomyopathy; biventricular hypertrophy + late gadolinium enhancement; informs reversibility prognosis
Documents prior treatments; informs current GH/IGF-1 status; may have hypopituitarism requiring replacement
* = hard-required. Engine cannot meaningfully run until these are filled.
Severity triggers (4)
- informationallife_threateningpituitary_apoplexy_with_adrenal_insufficiencyAcromegaly patient with acute severe headache + vision loss + hemodynamic collapse + cortisol <5 µg/dL — pituitary apoplexy (infarction or hemorrhage of adenoma) with secondary adrenal crisis; STAT IV hydrocortisone 100 mg + emergent neurosurgeryTrigger could not be auto-evaluated — needs clinician judgement.
- informationalseveresevere_osa_exacerbating_acromegaly_csSevere OSA (AHI >30 + nocturnal hypoxemia) untreated in acromegaly patient with cardiogenic shock — RV strain + nocturnal desaturation worsens shock physiology; STAT CPAP/BiPAP + sleep medicine consultTrigger could not be auto-evaluated — needs clinician judgement.
- informationalseveresomatostatin_induced_severe_bradycardia_or_qt_prolongationAcromegaly patient on octreotide / lanreotide develops severe bradycardia (HR <40) OR QT prolongation (QTc >500) → torsades risk; reduce dose or hold; ECG surveillanceTrigger could not be auto-evaluated — needs clinician judgement.
- informationalmoderategh_resistant_disease_requiring_pegvisomant_decisionAcromegaly patient with persistently elevated IGF-1 despite max-dose somatostatin analog (octreotide LAR 40 mg or lanreotide 120 mg q4 wk) — GH-resistant disease; consider pegvisomant transition; weigh risk-benefit (cost, LFT monitoring, daily SC injection)Trigger could not be auto-evaluated — needs clinician judgement.
Workflow calculators
Run this disease's risk and dosing calculators inline.
Recommended regimen
Acromegaly cardiomyopathy with CS — NE first-line + AVOID dopamine + cautious volume + somatostatin analog (octreotide / lanreotide) + pegvisomant if GH-resistant + concurrent OSA management + MCS bridge if refractory- norepinephrinefirst linevasopressor_alpha0.05–0.5 µg/kg/min titrate MAP ≥65 • IV • continuoustriggers: acromegaly_cs_with_sbp_lt_90, cs_scai_c_or_higher_in_acromegalySOAP-II PMID 20200382 — NE first-line in CS; AVOID dopamine in acromegaly (paradoxical somatotroph stimulation worsens GH secretion)rxcui 7512
- milrinonefirst linepde3_inhibitor0.125–0.5 µg/kg/min IV continuous (no bolus) • IV • continuoustriggers: acromegaly_cs_with_low_cardiac_output_and_adequate_mapInodilator; reduces SVR + improves cardiac output; preferred in biventricular failure pattern of acromegaly cardiomyopathy; ACC/AHA 2022 HF (PMID 35363499)rxcui 52769
- dobutaminesecond lineinotrope_beta12.5–10 µg/kg/min • IV • continuoustriggers: inotropy_needed_when_milrinone_unavailableDOREMI PMID 33704937 — non-inferior to milrinone; cautious in hypertrophic LV (preload-sensitive)rxcui 3616
- furosemidefirst lineloop_diuretic20-40 mg IV bolus titrate cautiously (preload-sensitive LV) • IV • as scheduledtriggers: acromegaly_cs_with_pulmonary_edemaDOSE PMID 21366472; CAUTIOUS in hypertrophic LV (small volume changes cause large pressure shifts)rxcui 4603
- octreotidefirst linesomatostatin_analog50 µg IV bolus then 100-500 µg SC q8h; transition to octreotide LAR 20 mg IM monthly once stable • IV/SC/IM • q8h SC or monthly LARtriggers: acromegaly_with_elevated_igf1_and_cs, acromegaly_cardiomyopathy_acute_decompensationEndocrine Society 2014 PMID 25356808; reduces GH/IGF-1 within hours-days; may improve cardiac function over weeks per Colao 2004; first-line medical therapy for acromegalyrxcui 221130
- lanreotidefirst linesomatostatin_analog_depot120 mg SC q4 wk depot (Autogel formulation) • SC • q4 wk depottriggers: acromegaly_chronic_management_after_stabilization, octreotide_intoleranceEndocrine Society 2014 PMID 25356808; depot somatostatin analog alternative to octreotide LAR; equivalent efficacyrxcui 236167
- pegvisomantsecond linegh_receptor_antagonist10 mg SC daily, titrate to 30 mg daily based on IGF-1 • SC • dailytriggers: gh_resistant_to_somatostatin_analog, somatostatin_analog_intolerance, igf1_persistently_elevated_despite_octreotideTrainer 2000 NEJM — normalizes IGF-1 in >90% per pivotal trial; second-line for GH-resistant or intolerant patientsrxcui 278739
- cabergolineadd ondopamine_d2_agonist0.5 mg PO twice weekly, titrate to 3.5 mg/wk • PO • twice weeklytriggers: acromegaly_with_co_secretion_of_prolactin, small_adenoma_with_mild_disease_after_stabilizationEndocrine Society 2014 PMID 25356808; ADD-ON only — generally INEFFECTIVE in acute CS setting (long onset; only suppresses small adenomas); useful for prolactin co-secreting adenomas after stabilizationrxcui 47579
- hydrocortisonerescueglucocorticoid100 mg IV q8h then taper • IV • q8htriggers: adrenal_insufficiency_from_panhypopituitarism_or_pituitary_apoplexySTAT replacement before any pituitary intervention if cortisol <5 µg/dL or pituitary apoplexy suspected; Endocrine Society 2014 PMID 25356808rxcui 5492
- carvedilolfirst linebeta_alpha_blocker3.125 mg PO BID titrate (after off catecholamines ≥24 h) • PO • BIDtriggers: acromegaly_cs_recovery_phase_off_inotropes_with_systolic_dysfunctionCOPERNICUS PMID 11386262 / CAPRICORN PMID 11356436; AVOID during active shock (hypertrophic LV depends on atrial kick); start ONLY in recovery phase after off catecholaminesrxcui 20352
- sacubitril-valsartanfirst linearni24/26 mg PO BID titrate to 97/103 BID • PO • BIDtriggers: acromegaly_cs_recovery_phase_with_persistent_hfrefPIONEER-HF PMID 30403955; recovery phase only; acromegaly cardiomyopathy with persistent HFrEF benefits from standard 4-pillar GDMTrxcui 1656328
- spironolactonefirst linemra12.5–25 mg PO daily • PO • dailytriggers: acromegaly_cs_recovery_phase_with_persistent_hfref_and_k_below_5RALES PMID 10471456; recovery phase onlyrxcui 9997
- empagliflozinfirst linesglt2_inhibitor10 mg PO daily • PO • dailytriggers: acromegaly_cs_recovery_phase_with_persistent_hfref_and_egfr_above_20EMPULSE PMID 35347356; particularly useful given DM common in acromegaly (GH-induced insulin resistance)rxcui 1545653
outpatient playbook — drug actions (3)
- 1. continue 4-pillar GDMT until LVEF normalized + stable ≥6-12 morxcui 1656328ARNI + BB + MRA + SGLT2i at max tolerated • PO • as scheduledtrigger: Persistent HFrEFACC/AHA 2022 HF; do not de-escalate prematurely (TRED-HF PMID 30429051 — withdrawal causes deterioration)
- 2. continue somatostatin analog or pegvisomant per remission statusoctreotide LAR or pegvisomant titrated to IGF-1 • IM/SC • monthly or dailytrigger: Persistent disease activity post-surgeryEndocrine Society 2014 — long-term medical therapy if surgery + radiation incomplete
- 3. add cabergoline if mild residual disease + small adenomarxcui 177670.5 mg PO twice weekly titrate to 3.5 mg/wk • PO • twice weeklytrigger: Mild residual disease + small adenoma + no significant valvular diseaseEndocrine Society 2014 — useful for prolactin co-secreting adenomas; AVOID if valvular disease (ergot valvulopathy)
Auto-drafted A&P note
outpatientSubjective
- Possible entry pathways: Cardiogenic shock (SBP <90 + lactate ≥2 + AKI / cool extremities) in patient with known acromegaly OR classic phenotype (frontal bossing, prognathism, enlarged hands/feet, soft-tissue swelling); Echo with biventricular concentric hypertrophy + LV systolic dysfunction (LVEF <35%) + shock physiology — acromegaly cardiomyopathy end-stage; Markedly elevated IGF-1 (age-adjusted >ULN) in shock patient with cardiomyopathy of unclear etiology — acromegaly screen.
Objective
- No vitals, labs, or imaging entered for this encounter.
Assessment
**Cardiogenic shock — acromegaly-induced cardiomyopathy** (cardio.cardiogenic-shock.acromegaly-cardiomyopathy.v1). Scope: Acromegaly cardiomyopathy with cardiogenic shock = end-stage manifestation of GH/IGF-1 excess (~30-40% of long-standing acromegaly develops cardiomyopathy; rare progression to shock); biventricular hypertrophy + diastolic + eventual systolic dysfunction + arrhythmia + accelerated CAD + valvular disease pattern; concurrent OSA in ~70%; preload-sensitive LV hypertrophy demands cautious volume management No severity triggers fired against current inputs.
Plan
Regimen axis: **Acromegaly cardiomyopathy with CS — NE first-line + AVOID dopamine + cautious volume + somatostatin analog (octreotide / lanreotide) + pegvisomant if GH-resistant + concurrent OSA management + MCS bridge if refractory**. 1. norepinephrine 0.05–0.5 µg/kg/min titrate MAP ≥65 IV continuous (vasopressor_alpha, first line) — SOAP-II PMID 20200382 — NE first-line in CS; AVOID dopamine in acromegaly (paradoxical somatotroph stimulation worsens GH secretion) 2. milrinone 0.125–0.5 µg/kg/min IV continuous (no bolus) IV continuous (pde3_inhibitor, first line) — Inodilator; reduces SVR + improves cardiac output; preferred in biventricular failure pattern of acromegaly cardiomyopathy; ACC/AHA 2022 HF (PMID 35363499) 3. dobutamine 2.5–10 µg/kg/min IV continuous (inotrope_beta1, second line) — DOREMI PMID 33704937 — non-inferior to milrinone; cautious in hypertrophic LV (preload-sensitive) 4. furosemide 20-40 mg IV bolus titrate cautiously (preload-sensitive LV) IV as scheduled (loop_diuretic, first line) — DOSE PMID 21366472; CAUTIOUS in hypertrophic LV (small volume changes cause large pressure shifts) 5. octreotide 50 µg IV bolus then 100-500 µg SC q8h; transition to octreotide LAR 20 mg IM monthly once stable IV/SC/IM q8h SC or monthly LAR (somatostatin_analog, first line) — Endocrine Society 2014 PMID 25356808; reduces GH/IGF-1 within hours-days; may improve cardiac function over weeks per Colao 2004; first-line medical therapy for acromegaly 6. lanreotide 120 mg SC q4 wk depot (Autogel formulation) SC q4 wk depot (somatostatin_analog_depot, first line) — Endocrine Society 2014 PMID 25356808; depot somatostatin analog alternative to octreotide LAR; equivalent efficacy 7. pegvisomant 10 mg SC daily, titrate to 30 mg daily based on IGF-1 SC daily (gh_receptor_antagonist, second line) — Trainer 2000 NEJM — normalizes IGF-1 in >90% per pivotal trial; second-line for GH-resistant or intolerant patients 8. cabergoline 0.5 mg PO twice weekly, titrate to 3.5 mg/wk PO twice weekly (dopamine_d2_agonist, add on) — Endocrine Society 2014 PMID 25356808; ADD-ON only — generally INEFFECTIVE in acute CS setting (long onset; only suppresses small adenomas); useful for prolactin co-secreting adenomas after stabilization 9. hydrocortisone 100 mg IV q8h then taper IV q8h (glucocorticoid, rescue) — STAT replacement before any pituitary intervention if cortisol <5 µg/dL or pituitary apoplexy suspected; Endocrine Society 2014 PMID 25356808 10. carvedilol 3.125 mg PO BID titrate (after off catecholamines ≥24 h) PO BID (beta_alpha_blocker, first line) — COPERNICUS PMID 11386262 / CAPRICORN PMID 11356436; AVOID during active shock (hypertrophic LV depends on atrial kick); start ONLY in recovery phase after off catecholamines 11. sacubitril-valsartan 24/26 mg PO BID titrate to 97/103 BID PO BID (arni, first line) — PIONEER-HF PMID 30403955; recovery phase only; acromegaly cardiomyopathy with persistent HFrEF benefits from standard 4-pillar GDMT 12. spironolactone 12.5–25 mg PO daily PO daily (mra, first line) — RALES PMID 10471456; recovery phase only 13. empagliflozin 10 mg PO daily PO daily (sglt2_inhibitor, first line) — EMPULSE PMID 35347356; particularly useful given DM common in acromegaly (GH-induced insulin resistance) Setting playbook (outpatient) — Long-term acromegaly cardiomyopathy surveillance: serial IGF-1 every 3 mo until normalized then every 6-12 mo; serial echo at 3 mo + 6 mo + 12 mo for LVEF recovery; pituitary surgery + radiotherapy if needed; ICD/WCD if LVEF <35% on full GDMT; advanced HF + transplant if no recovery; cardiology + endocrinology + neurosurgery co-management; OSA management 14. continue 4-pillar GDMT until LVEF normalized + stable ≥6-12 mo ARNI + BB + MRA + SGLT2i at max tolerated PO as scheduled — Persistent HFrEF (ACC/AHA 2022 HF; do not de-escalate prematurely (TRED-HF PMID 30429051 — withdrawal causes deterioration)) 15. continue somatostatin analog or pegvisomant per remission status octreotide LAR or pegvisomant titrated to IGF-1 IM/SC monthly or daily — Persistent disease activity post-surgery (Endocrine Society 2014 — long-term medical therapy if surgery + radiation incomplete) 16. add cabergoline if mild residual disease + small adenoma 0.5 mg PO twice weekly titrate to 3.5 mg/wk PO twice weekly — Mild residual disease + small adenoma + no significant valvular disease (Endocrine Society 2014 — useful for prolactin co-secreting adenomas; AVOID if valvular disease (ergot valvulopathy)) Non-pharmacologic actions: - Long-term cardiology + endocrinology + neurosurgery co-management - Stereotactic radiosurgery (Gamma Knife) if surgery fails or adenoma residual - Cardiac rehab maintenance - ICD/WCD evaluation if LVEF <35% at 3-6 mo on full GDMT - Advanced HF / transplant evaluation if no recovery at 6-12 mo - CPAP adherence - DM + lipid + BP management — acromegaly accelerates atherosclerosis; rigorous secondary prevention - Family history evaluation for MEN1 / familial isolated pituitary adenoma AVOID / contraindication checks: - AVOID_dopamine_in_acromegaly_cs (paradoxical somatotroph stimulation worsens GH secretion) - Cautious_volume_resuscitation_in_lv_hypertrophy (preload sensitive; small changes cause large pressure shifts) - AVOID_beta_blockers_in_active_shock (hypertrophic LV depends on atrial kick) - Rule_out_adrenal_insufficiency_before_any_pituitary_intervention (panhypopituitarism may co exist) - Hydrocortisone_100_mg_iv_stat_if_cortisol_below_5_or_pituitary_apoplexy_suspected (Endocrine Society 2014) - Somatostatin_analog_can_cause_bradycardia_and_qt_prolongation (monitor ECG) - Pegvisomant_monitor_lfts_q_4_to_6_weeks (transaminitis risk) - Cabergoline_avoid_if_valvular_heart_disease (ergot vasoconstriction; dose dependent valvulopathy) - Cpap_bipap_for_concurrent_osa_in_acromegaly_cs (~70% have concurrent OSA; worsens shock) - No_dapt_de_escalation_during_active_acs_pattern_in_acromegaly_cad
Monitoring
Regimen monitoring: - arterial line continuous BP (ACC/AHA 2022 Class I) - central venous access large bore (ACC/AHA 2022) - continuous telemetry for arrhythmia detection (AF + VT/VF more common in acromegaly cardiomyopathy) - lactate q1-2h (CardShock; Harjola PMID 26333869) - UOP hourly (SCAI 2019 end-organ perfusion marker) - daily IGF1 trend (responsive in days to somatostatin analog initiation) - daily glucose q4-6h (somatostatin analog can worsen DM via insulin suppression) - daily echo for LVEF recovery trajectory - pre discharge TSH ACTH cortisol prolactin (pituitary axis surveillance) - ECG q24h during somatostatin initiation (bradycardia + QT prolongation surveillance) - LFTs q4-6 weeks during pegvisomant (transaminitis risk) - serial IGF1 q3mo until normalized then q6-12mo (treatment response) - serial echo at 3mo 6mo 12mo postdischarge (LVEF recovery) - cardiac MRI annual for fibrosis surveillance - CPAP compliance review weekly if OSA - visual fields q6 to 12 mo if macroadenoma Setting (outpatient) monitoring: - Quarterly cardiology + echo until stable - Endocrine biochemical remission (IGF-1 normal + random GH <1 ng/mL) - Annual pituitary MRI if residual adenoma - Annual cardiac MRI for fibrosis - Annual visual fields if macroadenoma Follow-up plan: Endocrinology + cardiology co-management; pituitary surgery evaluation (transsphenoidal first-line) once stable; stereotactic radiosurgery if surgery fails / residual; long-term somatostatin analog or pegvisomant if surgery + radiation incomplete; serial IGF-1 every 3 mo until normalized then every 6-12 mo; serial echo at 3 mo + 6 mo + 12 mo for LVEF recovery; ICD/WCD evaluation if LVEF <35% on full GDMT; advanced HF + transplant if no recovery; OSA management (CPAP); annual cardiac MRI for fibrosis surveillance; visual field testing if macroadenoma - Close-out criterion: Multidisciplinary follow-up + pituitary surgery + endocrine + transplant pathway booked Monitoring phase: Continuous telemetry, A-line, central line; lactate q1-2 h; UOP hourly; daily echo for cardiac recovery trajectory; daily IGF-1 trend (responsive in days); daily BMP / NT-proBNP / troponin / glucose; BP cuff in non-affected arm if obvious hand changes; CPAP compliance if OSA
Disposition
Current setting: outpatient — Long-term acromegaly cardiomyopathy surveillance: serial IGF-1 every 3 mo until normalized then every 6-12 mo; serial echo at 3 mo + 6 mo + 12 mo for LVEF recovery; pituitary surgery + radiotherapy if needed; ICD/WCD if LVEF <35% on full GDMT; advanced HF + transplant if no recovery; cardiology + endocrinology + neurosurgery co-management; OSA management Disposition criteria: - Long-term continuation; cross-link to cardio.hfref.core.v1 if HFrEF persists; transplant if no recovery; biochemical remission goal (IGF-1 normal + random GH <1 ng/mL) per Endocrine Society 2014 Escalation triggers (move to higher acuity): - Worsening LVEF despite GDMT → advanced HF + transplant evaluation - New arrhythmia → urgent EP - IGF-1 elevation despite therapy → escalate therapy or radiation - New visual change → urgent neuro-ophthalmology + neurosurgery - New ischemic event → cardiology cath
Earlier-Return Triggers
Return-precaution thresholds (watch for): - [LIFE_THREATENING] Acromegaly patient with acute severe headache + vision loss + hemodynamic collapse + cortisol <5 µg/dL — pituitary apoplexy (infarction or hemorrhage of adenoma) with secondary adrenal crisis; STAT IV hydrocortisone 100 mg + emergent neurosurgery - [SEVERE] Severe OSA (AHI >30 + nocturnal hypoxemia) untreated in acromegaly patient with cardiogenic shock — RV strain + nocturnal desaturation worsens shock physiology; STAT CPAP/BiPAP + sleep medicine consult - [SEVERE] Acromegaly patient on octreotide / lanreotide develops severe bradycardia (HR <40) OR QT prolongation (QTc >500) → torsades risk; reduce dose or hold; ECG surveillance
Citations
- Endocrine Society 2014 Acromegaly Clinical Practice Guideline (Katznelson PMID 25356808) + 2022 ACC/AHA/HFSA HF Guideline (Heidenreich PMID 35363499) + SCAI 2022 CS staging (Naidu PMID 35718438) [PMID:25356808](https://pubmed.ncbi.nlm.nih.gov/25356808/) - Cited evidence (PMID 35363499) [PMID:35363499](https://pubmed.ncbi.nlm.nih.gov/35363499/) - Cited evidence (PMID 35718438) [PMID:35718438](https://pubmed.ncbi.nlm.nih.gov/35718438/) - Cited evidence (PMID 38587234) [PMID:38587234](https://pubmed.ncbi.nlm.nih.gov/38587234/) - Cited evidence (PMID 20200382) [PMID:20200382](https://pubmed.ncbi.nlm.nih.gov/20200382/) Last reconciled with current guidelines: 2026-05-15.
- Endocrine Society 2014 Acromegaly Clinical Practice Guideline (Katznelson PMID 25356808) + 2022 ACC/AHA/HFSA HF Guideline (Heidenreich PMID 35363499) + SCAI 2022 CS staging (Naidu PMID 35718438) — PMID:25356808
- Cited evidence (PMID 35363499) — PMID:35363499
- Cited evidence (PMID 35718438) — PMID:35718438
- Cited evidence (PMID 38587234) — PMID:38587234
- Cited evidence (PMID 20200382) — PMID:20200382