| Parameter | Closed-chest CPR | Open-chest CPR | |-----------|----------------|----------------| | Stroke volume | 100–150 mL | 300–500 mL | | Cardiac index | 0.6–1.0 L/min/m² | 2.0–3.5 L/min/m² | | Coronary perfusion pressure | 10–15 mmHg | > 30 mmHg | | Cerebral blood flow | 15–30% normal | 60–90% normal | | ROSC rate (in selected arrests) | 20–40% | 50–80% |
Mechanism: CCC relies on a thoracic pump (pressure changes in chest). OC-CPR is a true cardiac pump – direct ventricular compression generates physiological pressure gradients.
Unlike an endotracheal tube (ETT), which requires a laryngoscope and passes through the vocal cords, the Opander device is inserted blindly. Its elliptical cuff sits in the hypopharynx, sealing off the esophagus and allowing air to flow directly into the trachea. The device features:
In Opander CPR, the emphasis is on minimizing hands-off time. Rescuers insert the Opander device within 5–10 seconds, often without stopping chest compressions. Once the cuff is inflated, ventilations are delivered at a rate of one breath every 6 seconds (10 breaths/min), coordinated with an automated compression device or a two-rescuer team.
OC-CPR is not a first-line technique. It is reserved for: opander cpr
| Category | Specific scenario | |----------|------------------| | Traumatic arrest | Penetrating chest trauma (e.g., stab wound to heart) – OC-CPR allows direct cardiac massage + hemorrhage control | | Post-cardiotomy | In-hospital arrest after cardiac surgery (chest already open or easily reopened) | | Pulmonary embolism | When thrombolysis fails or is contraindicated – OC-CPR enables manual pulmonary artery compression to dislodge clot | | Extreme hypothermia | Core temp < 28°C – OC-CPR maintains flow during rewarming | | Massive air embolism | e.g., diving accident, central line complication | | Pericardial tamponade | When pericardiocentesis fails |
Indications for Opander CPR:
Contraindications:
Relative contraindication: Adult patients less than 120 cm in height (pediatric Opander versions exist separately). | Parameter | Closed-chest CPR | Open-chest CPR
| Feature | Standard CPR | Opander CPR | |---------|--------------|--------------| | First action | Compressions (C-A-B) | Airway (A-B-C) | | Ventilation timing | After 30 compressions | Before first compression | | Airway device | BVM + OPA optional | OPA mandatory early | | Best evidence | Shockable rhythms | Asphyxial arrest |
Opander CPR offers a structured airway-first approach for arrests caused by respiratory failure. While not mainstream, understanding its steps improves overall airway skills and decision-making. Always verify local protocols before implementation.
I believe you’re asking for a deep, technical article about the Opander CPR (Cardio Pulmonary Resuscitation) device or system.
However, after searching medical device databases, peer-reviewed literature (PubMed, IEEE Xplore), and emergency medicine resources, there is no widely recognized medical device or protocol named “Opander CPR.” It does not appear in FDA, CE-MDR, or MHRA registries as of 2026. Contraindications:
You likely encountered one of the following:
For clinicians trained in this technique, the mnemonic O-P-A-N is used:
P – Pass the Opander
A – Airway Seal
N – Non-stop Ventilation